JP6382570B2 - Minimally invasive purse string suture device - Google Patents

Minimally invasive purse string suture device Download PDF

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JP6382570B2
JP6382570B2 JP2014098798A JP2014098798A JP6382570B2 JP 6382570 B2 JP6382570 B2 JP 6382570B2 JP 2014098798 A JP2014098798 A JP 2014098798A JP 2014098798 A JP2014098798 A JP 2014098798A JP 6382570 B2 JP6382570 B2 JP 6382570B2
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suture
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平 猛 大
平 猛 大
石 豊 大
石 豊 大
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大平 猛
大平 猛
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本発明は、自然開口部越管腔内視鏡手術(NOTES)において、サーキュラー吻合装置を用い生体管の病巣部を切除してその切断端部双方同士を吻合する直前に前記各切断端部を把持して巾着縫合を行う低侵襲巾着縫合デバイスに係り、より詳しくは、人体の切開あるいは開腹を必要とせずに手術侵襲を極力少なくする内視鏡下で、体腔内において前記切断端部の巾着縫合を短時間に安全に行うことが可能で、巾着縫合処置部である顎部の開閉駆動機構及び屈曲駆動機構部をコンパクト化し機能性及び操作性を向上させた低侵襲巾着縫合デバイスに関する。   In the present invention, in the natural opening transluminal endoscopic surgery (NOTES), each of the cut ends is removed immediately before excision of the lesion portion of the biological tube using a circular anastomosis device and anastomosis of the cut ends. The present invention relates to a minimally invasive purse string suturing device for grasping and purging a purse string, and more specifically, a purse string at the cut end in a body cavity under an endoscope that minimizes surgical invasion without requiring incision or laparotomy of the human body. The present invention relates to a minimally invasive purse string suturing device that can perform suturing safely in a short time, and has a compact and compact function of the jaw opening / closing drive mechanism and the bending drive mechanism part, which is a purse string suture treatment part.

内視鏡(胃腸)あるいは腹腔鏡(腹部)の小型化及び精度向上と医療技術の向上に伴い健康診断等の病巣の早期発見により、病巣が小さいうちに処置できる内視鏡下外科手術又は腹腔鏡下手術である鏡視下手術のニーズが高まっている。鏡視下手術においては、従来の切開外科手術に比べて傷が小さく人体への負担も少ない低侵襲化が展開しつつある。   Endoscopic surgery or abdominal cavity that can be treated while the lesion is small due to the early detection of a lesion such as a health checkup due to downsizing and accuracy improvement of the endoscope (gastrointestinal) or laparoscope (abdomen) and improvement of medical technology There is a growing need for endoscopic surgery, which is a mirror operation. In the endoscopic surgery, a minimally invasive approach is being developed that has less scars and less burden on the human body than conventional open surgery.

従来の腹部外科では、長径略20mm以上の開腹創を伴う侵襲的外科治療に代わり、直径略10mm×長さ略300mmのデバイスを腹壁に刺入し外科手術が施されてきた。ここ数年、長径略20mmの開腹創から通常4本以上の複数本の各種鉗子や腹腔鏡を挿入し手術を施行するReduced Port Surgery(RPS)が開発され実施されている。   In conventional abdominal surgery, instead of an invasive surgical treatment involving a laparotomy with a major axis of approximately 20 mm or more, a device having a diameter of approximately 10 mm and a length of approximately 300 mm has been inserted into the abdominal wall and surgery has been performed. In recent years, Reduced Port Surgery (RPS) has been developed and implemented, in which four or more various forceps and laparoscopes are inserted from a laparotomy having a major axis of about 20 mm to perform surgery.

一般的な鏡視下手術においては、患者の腹部等に複数の腹腔孔を開け、これらの腹腔孔に筒状のトラカールを挿入した後、各トラカールを通して、腹腔鏡と複数の鉗子が体腔内に挿入される。鉗子の先端部には、外科的処置部として、生体組織等を把持するためのグリッパや、鋏、電気メスのブレード等が取り付けられている。   In general endoscopic surgery, a plurality of abdominal holes are opened in the abdomen of a patient, and cylindrical trocars are inserted into these abdominal holes, and then the laparoscope and a plurality of forceps are inserted into the body cavity through each trocar. Inserted. A gripper, a scissors, an electric scalpel blade, and the like are attached to the distal end portion of the forceps as a surgical treatment portion.

そして近年、このような内視鏡手術の、特に自然開口部越管腔内視鏡手術(NOTES)において、サーキュラー吻合装置を用い腸などの生体管の病巣部を切除してその切断端部双方同士を吻合する直前に、別途腹腔孔のトラカールから巾着縫合用器具を人体内部の前記生体管の切断端部近傍に挿入して双方の切断端部をそれぞれ巾着縫合する処置が行われるようになった。   In recent years, in such endoscopic surgery, in particular, natural orifice transluminal endoscopic surgery (NOTES), a circular anastomosis device is used to excise the lesion part of a biological tube such as the intestine, and both cut ends thereof. Immediately before anastomosing each other, a purse string suture instrument is separately inserted from the trocar of the abdominal cavity into the vicinity of the cut end of the living body tube inside the human body, and both cut ends are respectively sutured to the purse string. It was.

その代表例の巾着縫合用器具は、図31に示すように、腸に巾着縫合を施す際、腸を径方向から把持する顎部114と、顎部114に一端が接続された細長い直管状の挿入管部112と、顎部114を操作する操作ハンドル110とを備えている。(例えば特許文献1参照)。   As shown in FIG. 31, the purse string suturing device of the representative example has a jaw part 114 that grips the intestine from the radial direction when the purse string is sutured, and an elongated straight tube having one end connected to the jaw part 114. An insertion tube portion 112 and an operation handle 110 for operating the jaw portion 114 are provided. (For example, refer to Patent Document 1).

顎部114は、図32に示すように、互いに対向する櫛歯状をなす一対の第1、第2顎124、125を備え、第1顎124の一端が第1支軸128により挿入管部112の先端に回動(開閉)可能に軸支されるとともに、第2顎125の後端近傍が、第1顎124の後端近傍に第2支軸176により第1支軸128の軸心方向に回動可能に軸支され、第2支軸176周りの回動で挿入管部112に対する屈曲角度が変更される一方、第2顎125の第1支軸128周りの回動(開閉)で把持動作が行われるように構成されている。   As shown in FIG. 32, the jaw portion 114 includes a pair of first and second jaws 124 and 125 that are comb-like opposed to each other, and one end of the first jaw 124 is inserted into the insertion tube portion by the first support shaft 128. The rear end of the second jaw 125 is pivotally supported at the front end of the first jaw 112, and the axis of the first support shaft 128 is located near the rear end of the first jaw 124 by the second support shaft 176. The bend angle with respect to the insertion tube portion 112 is changed by turning around the second support shaft 176, while turning around the first support shaft 128 of the second jaw 125 (opening and closing). The gripping operation is performed with the.

挿入管部112の内部には、挿入管部112の軸心方向に移動可能な2本の操作ロッド及び針案内又はカートリッジ122が並設され、操作ハンドル110による一方の操作ロッドの移動動作で顎部114の角度変更動作が行われ、操作ハンドル110による他方の操作ロッドの移動動作で顎部114の把持動作が行われるようになっている。   Inside the insertion tube portion 112, two operation rods and needle guides or cartridges 122 that are movable in the axial direction of the insertion tube portion 112 are juxtaposed, and the jaws are moved by the movement of one operation rod by the operation handle 110. The angle change operation of the portion 114 is performed, and the gripping operation of the jaw portion 114 is performed by the movement operation of the other operation rod by the operation handle 110.

特開2006−314819号公報JP 2006-314819 A

しかし、従来の特許文献1に記載の巾着縫合用器具は、挿入管部112に対する顎部114の角度を変更させた状態で顎部114に把持動作を行わせるために、第2顎125と他方の操作ロッドとの間に複雑なリンク機構150を設けていて、把持動作の際に第1顎124に対して第2顎125を離間させると、リンク機構150が挿入管部112の径方向外側に張り出す状態となる。したがって、手術時に人体内部に広いスペースが無い場合には、把持動作の際にリンク機構150が人体に不意に接触してしまう畏れがある。   However, the purse string suturing device described in Patent Document 1 has the second jaw 125 and the other jaw in order to cause the jaw portion 114 to perform a gripping operation in a state where the angle of the jaw portion 114 with respect to the insertion tube portion 112 is changed. When a complicated link mechanism 150 is provided between the first jaw 124 and the second jaw 125 when the gripping operation is performed, the link mechanism 150 is radially outward of the insertion tube portion 112. It will be overhanging. Therefore, if there is no large space inside the human body during surgery, the link mechanism 150 may unexpectedly come into contact with the human body during the gripping operation.

また、特許文献1に記載の巾着縫合用器具は、リンク機構150等の構造が複雑であるので、経年劣化等により顎部114の把持動作等が滑らかに行われなくなり、ひいては手術者の使用感を損ねてしまう可能性があるなど種々の問題点がある。   In addition, the purse string suturing instrument described in Patent Document 1 has a complicated structure such as the link mechanism 150, so that the jaw 114 is not smoothly gripped due to deterioration over time and the like. There are various problems such as the possibility of damaging.

本発明は、前記従来技術の問題点に鑑みてなされたものであり、本発明の目的は、顎部開閉駆動機構や顎部屈曲駆動機構等の構造を部品数が最小限で簡潔かつ軽量・コンパクト化し、安全に短時間で被縫合体の巾着縫合作業を行うことができる信頼性、機能性、操作性及び経済性を向上させた、使用感の良好な低侵襲巾着縫合デバイスを提供することにある。   The present invention has been made in view of the above-mentioned problems of the prior art, and the object of the present invention is to simplify the structure of the jaw opening / closing drive mechanism, the jaw bending drive mechanism, etc. To provide a minimally invasive purse string suturing device with a good feeling of use, which is compact and can improve the reliability, functionality, operability, and economy of a purse string stitching operation of a body to be sutured safely and in a short time. It is in.

前記目的を達成するため、本発明に係る低侵襲巾着縫合デバイスは、サーキュラー吻合装置を用い生体管の病巣部を切除してその切断端部双方同士を吻合する直前に前記各切断端部を把持しながら巾着縫合を行う低侵襲巾着縫合デバイスであって、主軸であるX軸、近位端すなわち後端及び遠位端すなわち先端を有し、生体内に挿入される略直管状の挿入管部と、前記挿入管部の先端部にX軸に対して屈曲可能に連結され、前記生体管の切断端部を径方向から把持する顎部と、前記挿入管部の内部にX軸方向動可能に挿通され、縫合糸の両端がそれぞれ接続された一対の縫合針を備える縫合針カートリッジを有し、前記生体管の双方の切断端部を巾着縫合する巾着縫合機構と、前記挿入管部の後端部に連結され、前記顎部及び縫合針カートリッジを操作する操作部と、を備え、前記顎部は、後端部が前記挿入管部の先端部に第1支軸によりX軸に対して回動し屈曲可能に軸支される第1顎と、後端部近傍が前記第1顎の後端部近傍に第2支軸により前記第1顎方向に回動可能に軸支され、前記第1顎に対して閉じ方向又は開き方向に回動することにより前記第1顎とで把持動作を行う第2顎と、を備え、前記操作部と顎部との間には、前記挿入管部内部にX軸方向移動もしくはX軸回り回転可能に挿通され、前記顎部の開閉動作を行なう開閉操作ロッドと、前記顎部のX軸に対する任意の屈曲角度において、前記開閉操作ロッドのX軸方向移動動作もしくはX軸回り回転動作により前記第2顎を前記第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる顎開閉ガイド機構と、を備え
前記顎開閉ガイド機構は、前記第1顎と第2顎の間に設けられ、両者が離間して傾斜し開き姿勢に保持する付勢部材と、前記開閉操作ロッドの先端部にX軸方向前方に延設され、前記第2顎の後端部の前記第1顎の後端部に対向する側面に接触可能にX軸に対して偏心し配置された曲面又は角柱状ガイド部が形成された任意断面形ガイド部材と、を有し、前記顎部のX軸に対する任意の屈曲角度において、前記開閉操作ロッドのX軸回り所定角度の正方向又は逆方向回転動作により前記ガイド部材のガイド部が前記第2顎後端部の側面に摺接して当該側面が次第に押圧又は押圧解除されることで前記第2顎を第1顎側への閉じ方向又は開き方向に回動させるように構成されていることを特徴とする。
In order to achieve the above object, the minimally invasive purse string suturing device according to the present invention grasps each cut end immediately before excision of a lesion portion of a biological tube using a circular anastomosis apparatus and anastomosis of both cut ends. A minimally invasive purse string suturing device that performs a purse string suture while having an X axis as a main axis, a proximal end or rear end, and a distal end or distal end, and a substantially straight tubular insertion tube portion to be inserted into a living body When the bendable coupled to the X-axis to the distal end of the insertion tube portion, and a jaw for gripping the cut end of the natural canal in the radial direction, the X-axis direction moving inside the insertion tube portion A purse string suturing mechanism comprising a suturing needle cartridge including a pair of suturing needles inserted through the suture thread and connected to both ends of the suture thread; Connected to the rear end, the jaw and suturing needle cart An operating portion for operating the wedge, and the jaw portion is pivotally supported by the first support shaft so that the rear end portion thereof is pivotable with respect to the X axis by the first support shaft so as to be bent. One jaw and the vicinity of the rear end portion are pivotally supported by the second support shaft in the vicinity of the rear end portion of the first jaw so as to be rotatable in the first jaw direction, and are closed or opened with respect to the first jaw. And a second jaw that performs a gripping operation with the first jaw by rotating in the X-axis direction or around the X-axis inside the insertion tube portion between the operation portion and the jaw portion. An open / close operation rod that is rotatably inserted and opens / closes the jaw, and an arbitrary bending angle with respect to the X axis of the jaw by the X axis direction moving operation or the X axis rotation operation of the open / close operation rod Jaw opening / closing guide machine for rotating the second jaw in the closing direction toward the first jaw or in the opening direction away from the first jaw. Equipped with, and
The jaw opening / closing guide mechanism is provided between the first jaw and the second jaw, and a biasing member that is inclined and held apart from each other, and a front end portion of the opening / closing operation rod at the front in the X-axis direction. A curved surface or prismatic guide portion that is eccentrically arranged with respect to the X axis so as to be able to contact the side surface of the rear end portion of the second jaw facing the rear end portion of the first jaw. An arbitrary cross-sectional guide member, and the guide portion of the guide member is rotated by a forward or reverse rotation operation at a predetermined angle around the X axis of the opening / closing operation rod at an arbitrary bending angle with respect to the X axis of the jaw portion. The second jaw is configured to rotate in the closing direction or the opening direction toward the first jaw by slidingly contacting the side surface of the rear end of the second jaw and gradually pressing or releasing the side surface. and said that you are.

また、前記顎開閉ガイド機構は、前記第1顎と第2顎の間に設けられ、両者が離間して傾斜し開き姿勢に保持する付勢部材と、前記開閉操作ロッドの先端部に前記第2顎の後端部に対向し形成された略平面又は曲面状ガイド面と、を有し、前記顎部のX軸に対する任意の屈曲角度において、前記開閉操作ロッドのX軸方向前進又は後退動作により前記ガイド面が前記第2顎の後端部の第1顎側に摺接して当該後端部が次第に押圧又は押圧解除されることで前記第2顎を第1顎側への閉じ方向又は開き方向に回動させるように構成されている、ことを特徴とする。   Further, the jaw opening / closing guide mechanism is provided between the first jaw and the second jaw, and a biasing member which is inclined and held apart from each other, and a distal end portion of the opening / closing operation rod is attached to the first jaw. A substantially planar or curved guide surface formed facing the rear end of the two jaws, and the open / close operation rod moves forward or backward in an arbitrary bending angle with respect to the X axis of the jaw The guide surface is in sliding contact with the first jaw side of the rear end portion of the second jaw and the rear end portion is gradually pressed or released so that the second jaw is closed in the first jaw side or It is configured to rotate in the opening direction.

また、本発明の別の実施形態による前記顎開閉ガイド機構は、前記第1顎と第2顎の間に設けられ、両者が離間して傾斜し開き姿勢に保持する付勢部材と、前記開閉操作ロッドの先端部にX軸方向前方に延設され、前記第2顎の後端部の前記第1顎の後端部に対向する側面に接触可能にX軸に対して偏心し配置された曲面又は角柱状ガイド部が形成された任意断面形ガイド部材と、を有し、前記顎部のX軸に対する任意の屈曲角度において、前記開閉操作ロッドのX軸回り所定角度の正方向又は逆方向回転動作により前記ガイド部材のガイド部が前記第2顎後端部の側面に摺接して当該側面が次第に押圧又は押圧解除されることで前記第2顎を第1顎側への閉じ方向又は開き方向に回動させるように構成されている、ことを特徴とする。   Further, the jaw opening / closing guide mechanism according to another embodiment of the present invention is provided between the first jaw and the second jaw, and a biasing member that is inclined and held in an open position, and the opening / closing is provided. The front end of the operating rod extends in the X-axis direction, and is arranged eccentrically with respect to the X-axis so as to be in contact with the side surface of the rear end of the second jaw facing the rear end of the first jaw. An arbitrary cross-sectional guide member formed with a curved surface or a prismatic guide portion, and at an arbitrary bending angle with respect to the X axis of the jaw portion, a forward or reverse direction of a predetermined angle around the X axis of the opening / closing operation rod The guide portion of the guide member is slidably brought into contact with the side surface of the rear end portion of the second jaw by the rotation operation, and the side surface is gradually pressed or released so that the second jaw is closed or opened toward the first jaw. It is comprised so that it may rotate in a direction, It is characterized by the above-mentioned.

また、前記顎部は、前記第1顎及び第2顎が、互いに対向する側にそれぞれ歯合する複数の歯部を有する櫛歯状をなし、前記第1顎及び第2顎の各歯部先端には前記縫合針カートリッジの各縫合針を案内する凹条溝が各顎の長手方向にそれぞれ延設され、X軸に対する任意の屈曲角度における前記顎部の第1顎及び第2顎で前記生体管の切断端部を把持して当該生体管の肉壁が前記各歯部に倣って断面波状となるように重なった状態で、前記縫合糸の両端の各端がそれぞれ接続された前記一対の縫合針を前記各凹条溝に両者同時に前記挿入管部側から通過させることにより巾着縫合が施される巾着縫合機構を有する、ことを特徴とする。   Further, the jaw portion has a comb-like shape in which the first jaw and the second jaw have a plurality of tooth portions that mesh with each other on opposite sides, and each tooth portion of the first jaw and the second jaw. A concave groove for guiding each suture needle of the suture needle cartridge extends at the distal end in the longitudinal direction of each jaw, and the first jaw and the second jaw of the jaw at an arbitrary bending angle with respect to the X axis In the state where the cut end portion of the living body tube is gripped and the wall of the living body tube is overlapped so as to have a corrugated cross-section following each tooth portion, the pair of ends of the suture thread respectively connected to each other It has a purse string stitching mechanism in which purse string stitching is performed by passing both of the stitching needles through the concave groove at the same time from the insertion tube part side.

また、前記顎開閉駆動機構は、前記操作部まで延設される前記挿入管部の後端部、又は前記挿入管部の後端部に連結する環状把手部の後端部に設けられ、前記開閉操作ロッドの後端部に連結して前記開閉操作ロッドをX軸方向移動もしくはX軸回り回転させることより前記第2顎を前記第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる顎開閉操作手段を備えている、ことを特徴とする。 Further, the jaw opening and closing drive mechanism is provided at a rear end portion of the insertion tube portion extending to the operation portion, or a rear end portion of an annular handle portion connected to a rear end portion of the insertion tube portion, coupled to the rear end of the opening and closing rod the opening and closing the operating rod to the closing direction or counterclockwise first jaw side of the more the second jaw to be X-axis direction movement or X-axis rotation to the first jaw side And a jaw opening / closing operation means for rotating in the opening direction.

また、前記顎開閉操作手段は、前記挿入管部の後端部に連結する環状把手部の後端部にX軸周りの回転が拘束されてX軸方向移動可能に配置され、前記開閉操作ロッドの後端部に連結され、且つ、外周面に雄螺旋が螺刻された環状雄螺旋部材と、前記雄螺旋に螺合する雌螺旋が螺刻された螺旋孔を有し、前記環状把手部の後端部にX軸方向移動が拘束されてX軸周りに回転可能に外嵌され、正逆回転することにより前記環状雄螺旋部材を前記開閉操作ロッドと共にX軸方向に螺進又は螺退させ、前記第2顎を前記第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる回転駆動手段と、を備えている、ことを特徴とする。   The jaw opening / closing operation means is disposed at the rear end portion of the annular handle portion connected to the rear end portion of the insertion tube portion so as to be able to move in the X axis direction while being restricted from rotating around the X axis. An annular male spiral member that is coupled to the rear end portion and has a male spiral threaded on an outer peripheral surface thereof, and a spiral hole threaded with a female spiral that is threadedly engaged with the male spiral; The movement of the X-axis direction is constrained to the rear end of the X-axis, and is fitted around the X-axis so that it can rotate around the X-axis. Rotation driving means for rotating the second jaw in the closing direction toward the first jaw or in the opening direction away from the first jaw.

また、本発明の別の実施形態による前記顎開閉操作手段は、前記挿入管部の後端部もしくは前記環状把手部の後端部にX軸周りの回転が拘束されてX軸方向移動可能に外嵌され、前記開閉操作ロッドの後端部に連結された開閉操作ロッド駆動部材と、一端が前記挿入管部の後端部もしくは前記環状把手部に固着され、他端が連結される前記開閉操作ロッド駆動部材を前記開閉操作ロッドと共にX軸方向前進又は後退させることより前記第2顎を前記第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる電動マイクロリニアアクチュエータと、を備えている、ことを特徴とする。   In addition, the jaw opening / closing operation means according to another embodiment of the present invention can move in the X-axis direction by restricting rotation around the X-axis to the rear end portion of the insertion tube portion or the rear end portion of the annular handle portion. The opening / closing operation rod driving member that is externally fitted and connected to the rear end portion of the opening / closing operation rod, and the opening / closing operation that one end is fixed to the rear end portion of the insertion tube portion or the annular handle portion and the other end is connected An electric micro linear that rotates the second jaw in the closing direction to the first jaw side or the opening direction to the opposite first jaw side by moving the operation rod driving member together with the opening / closing operation rod in the X-axis direction. And an actuator.

また、本発明のさらに別の実施形態による前記顎開閉操作手段は、本体が前記環状把手部の後端部に固着され、回転軸が前記開閉操作ロッドの後端部に連結され、前記開閉操作ロッドを前記X軸周りに回転させることより前記第2顎を前記第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる減速機付き小型電動モータを備えている、ことを特徴とする。   In the jaw opening / closing operation means according to still another embodiment of the present invention, a body is fixed to a rear end portion of the annular handle portion, a rotation shaft is connected to a rear end portion of the opening / closing operation rod, and the opening / closing operation is performed. A small electric motor with a speed reducer that rotates the rod around the X axis to rotate the second jaw in the closing direction toward the first jaw or in the opening direction away from the first jaw; It is characterized by that.

また、前記操作部と顎部との間には、前記挿入管部内部にX軸方向移動可能に挿通され、且つ、先端が前記顎部の後端に連結された屈曲操作部材と、前記屈曲操作部材の後端部を連結してX軸方向前進又は後退させ前記顎部の後端に対する押圧又は引込動作を行うことにより、前記顎部を前記第1支軸周りに回動させてX軸に対する一方向への前記顎部の屈曲角度変更動作を操作する屈曲角度操作手段と、を備える顎部屈曲駆動機構を有する、ことを特徴とする。   Further, a bending operation member inserted between the operation portion and the jaw portion so as to be movable in the X-axis direction inside the insertion tube portion and having a distal end connected to a rear end of the jaw portion; and the bending portion By connecting the rear end portion of the operation member and moving forward or backward in the X-axis direction to perform pressing or retracting operation on the rear end of the jaw portion, the jaw portion is rotated around the first support shaft to thereby rotate the X-axis. And a bending angle operating means for operating the bending angle changing operation of the jaw in one direction with respect to the jaw.

また、前記屈曲操作部材は、少なくとも前記第1支軸の外周面に対応する区域には、前記顎部の屈曲角度変更動作の際に弾性変形し屈曲可能な可撓部が設けられている、ことを特徴とする。   Further, the bending operation member is provided with a flexible portion that can be elastically deformed and bent when the bending angle of the jaw portion is changed, at least in a region corresponding to the outer peripheral surface of the first support shaft. It is characterized by that.

また、前記屈曲操作部材は、一対並設され、一対の屈曲操作部材の各先端が前記第1顎及び第2顎の各後端部に位置する前記凹条溝にそれぞれ接続され、前記各屈曲操作部材内には、前記各縫合針がそれぞれ挿通可能な細径薄肉チューブ部材からなっており、前記各縫合針の全長が、前記各屈曲操作部材に前記第1顎、第2顎のそれぞれを加えた全長より長く形成されている、ことを特徴とする。   Further, a pair of the bending operation members are provided side by side, and the respective distal ends of the pair of bending operation members are respectively connected to the concave grooves located at the rear end portions of the first jaw and the second jaw, respectively, The operation member is formed of a thin-walled thin tube member into which each of the suture needles can be inserted, and the total length of each of the suture needles is set so that each of the first jaw and the second jaw is attached to each of the bending operation members. It is characterized by being formed longer than the added total length.

また、本発明の別の実施形態による前記屈曲角度操作手段は、前記挿入管部の後端部又は前記挿入管部に連結される環状把手部と前記屈曲操作部材の後端部との間に設けられ、内周面に雌螺旋が螺刻された螺旋孔部材及び外周面に前記螺旋孔部材に螺合する雄螺旋が螺刻された環状雄螺旋部材からなる螺旋機構部と、前記螺旋機構部の螺旋孔部材又は環状雄螺旋部材のいずれか一方の後端部に連結され、前記螺旋機構部の他方を正逆回転することにより前記屈曲操作部材と共にX軸方向に螺進又は螺退させ、前記顎部の屈曲角度変更動作を行なう回転駆動手段と、を備えている、ことを特徴とする。   According to another embodiment of the present invention, the bending angle operation means includes a rear end portion of the insertion tube portion or an annular handle portion connected to the insertion tube portion and a rear end portion of the bending operation member. A helical mechanism member comprising a helical hole member provided with a female helix screwed on an inner peripheral surface and an annular male helical member screwed with a male helix screwed on the helical hole member on an outer peripheral surface; and the helical mechanism It is connected to the rear end part of either the spiral hole member or the annular male spiral member, and the other of the spiral mechanism part is rotated forward or backward in the X-axis direction together with the bending operation member. And a rotation driving means for performing a bending angle changing operation of the jaw part.

また、前記回転駆動手段は、本体が前記把手部材に固着され、回転軸が前記雄螺旋軸の後端部に連結される減速機付小型電動モータを備えている、ことを特徴とする。   Further, the rotation driving means includes a small electric motor with a speed reducer having a main body fixed to the handle member and a rotating shaft coupled to a rear end portion of the male spiral shaft.

また、本発明の別の実施形態による前記屈曲角度操作手段は、前記挿入管部の後端部に連結される環状把手部の後端部にX軸方向移動可能に配置され、前記屈曲操作部材の後端部に連結された屈曲操作駆動部材と、一端が前記環状把手部に固着され、他端が連結される前記屈曲操作駆動部材をX軸方向前進又は後退させることで前記屈曲操作部材をX軸方向に移動させて前記顎部の屈曲角度変更動作を行なう電動マイクロリニアアクチュエータと、を備えている、ことを特徴とする。   Further, the bending angle operation means according to another embodiment of the present invention is arranged to be movable in the X-axis direction at a rear end portion of an annular handle portion connected to a rear end portion of the insertion tube portion, and the bending operation member The bending operation drive member connected to the rear end portion and the bending operation drive member having one end fixed to the annular handle portion and the other end connected to each other by moving forward or backward in the X-axis direction. And an electric micro linear actuator that moves in the X-axis direction to change the bending angle of the jaw.

また、前記巾着縫合機構は、細径薄肉中空管状体からなり、後端に縫合操作部が連結され、先端が尖鋭状に形成された尖鋭端を有し、前記尖鋭端近傍に縫合糸が挿通する1個又は2個の縫合糸挿通口が開設された一対の縫合針と、前記一対の縫合針が着脱可能に挿通される一対の細径薄肉中空管状部及び当該中空管状部が連通して連結される薄肉スリット状連通部からなる縫合針ケースと、を有する縫合針カートリッジと、両端の各端が前記各縫合針の縫合糸挿通口にそれぞれ挿通され、中間部が縫合糸ケースのスリット状連通部内に収容される縫合糸と、前記挿入管部のX軸方向後端面から先端部に亘り開設され、前記縫合針カートリッジが着脱可能に挿通される縫合針カートリッジ挿通孔と、から構成される、ことを特徴とする。
The purse string suturing mechanism is formed of a thin hollow hollow tubular body, has a stitching operation part connected to the rear end, has a sharp end with a sharp tip, and a suture thread is inserted near the sharp end. A pair of suture needles having one or two suture thread insertion openings, a pair of small-diameter thin hollow tubular portions through which the pair of suture needles are detachably inserted, and the hollow tubular portions communicate with each other. a needle case made of thin slit Joren communication unit connected, a needle cartridge having a said each end of the two ends are respectively inserted into the suture insertion hole of the needle, an intermediate portion of the sewing doubling case slit And a suture needle cartridge insertion hole that is opened from the rear end surface in the X-axis direction of the insertion tube portion to the distal end portion and through which the suture needle cartridge is detachably inserted. It is characterized by that.

また、前記縫合針カートリッジの1対の縫合針は、超弾性形状記憶合金からなり、前記第1支軸の外周面に対応する先端近傍区域が前記顎部の屈曲する方向に屈曲形成されている、ことを特徴とする。   The pair of suturing needles of the suturing needle cartridge is made of a superelastic shape memory alloy, and a region near the tip corresponding to the outer peripheral surface of the first support shaft is bent in the direction in which the jaw portion bends. It is characterized by that.

また、本発明の別の形態の前記操作部と顎部との間には、前記挿入管部内部に前記縫合針カートリッジに平行配置されてX軸方向移動可能に挿通され、且つ、先端部が第1顎後端に突設された連係部材に形成されたスライドガイド孔にスライド可能に係合する屈曲操作部材と、前記屈曲操作部材の後端部を連結してX軸方向前進又は後退させ前記連係部材のスライドガイド孔に対する押圧又は引込動作を行うことにより、前記顎部を前記第1支軸周りに回動させてX軸に対する一方向への前記顎部の屈曲角度変更動作を操作する屈曲角度操作手段と、を備える顎部屈曲駆動機構を有する、ことを特徴とする。   Further, between the operation portion and the jaw portion according to another aspect of the present invention, the insertion tube portion is inserted in parallel with the suture needle cartridge so as to be movable in the X-axis direction, and the distal end portion is A bending operation member that is slidably engaged with a slide guide hole formed in a linkage member projecting from the rear end of the first jaw and a rear end portion of the bending operation member are connected to advance or retract in the X-axis direction. The jaw member is rotated around the first support shaft by pressing or retracting the linkage member with respect to the slide guide hole, thereby operating the bending angle changing operation of the jaw in one direction with respect to the X axis. And a jaw angle bending drive mechanism including a bending angle operation means.

また、前記挿入管部は長手方向に2分割される一対の分割体からなり、前記環状把手部を含む操作部は前記挿入管部の後端部に着脱可能に連結され、前記第1支軸は前記挿入管部の先端部及び前記第1顎の後端部に、前記第2支軸は前記第1顎及び第2顎の後端部にそれぞれ着脱可能に挿通されることにより、前記挿入管内に挿通される構成部材及び前記顎部の構成部材の消毒洗浄が容易に行なえるように解体可能に構成される、ことを特徴とする   In addition, the insertion tube portion includes a pair of divided bodies that are divided into two in the longitudinal direction, and an operation portion including the annular handle portion is detachably connected to a rear end portion of the insertion tube portion, and the first support shaft Is inserted into the distal end portion of the insertion tube portion and the rear end portion of the first jaw, and the second support shaft is detachably inserted into the rear end portions of the first jaw and the second jaw. The component member inserted into the tube and the component member of the jaw are configured to be disassembled so that disinfection and cleaning can be easily performed.

また、前記環状把手部の前記一対の縫合針が挿通される位置に対応する位置にX軸方向に沿って穿設され、前記縫合針がそれぞれ外面から嵌入可能な一対のスリット溝及び当該スリット溝に連設し前記縫合針が外面から嵌入する側のX軸に対する直交方向に拡がるテーパ面からなる開口ガイド溝と、当該開口ガイド溝の外面に形成され前記環状把手部に一時的に装着される予備装着部と、を有する縫合針カートリッジセッティング治具をさらに備える、ことを特徴とする。   Further, a pair of slit grooves which are formed along the X-axis direction at positions corresponding to positions where the pair of suture needles of the annular handle portion are inserted, and the suture needles can be respectively fitted from the outer surface, and the slit grooves And an opening guide groove having a tapered surface extending in a direction orthogonal to the X axis on the side where the suture needle is fitted from the outer surface, and formed on the outer surface of the opening guide groove and temporarily attached to the annular handle portion And a suturing needle cartridge setting jig having a preliminary mounting portion.

さらに、前記第1顎及び第2顎、前記挿入管部、前記開閉操作ロッドは、いずれも医療適合性硬質樹脂材料からなり、前記第1顎及び第2顎は前記第1支持軸及び第2支持軸がそれぞれ着脱可能に構成され、前記挿入管部及び開閉操作ロッドは前記操作部との連結部がそれぞれ着脱可能な嵌合機構又螺合機構により構成されることでいずれも分解可能であって、
一回又は複数回の前記巾着縫合処置後に廃棄可能に構成される、ことを特徴とする
Furthermore, the first jaw and the second jaw, the insertion tube portion, and the opening / closing operation rod are all made of a medical-compatible hard resin material, and the first jaw and the second jaw are the first support shaft and the second jaw. Each of the support shafts is configured to be detachable, and the insertion tube portion and the opening / closing operation rod can be disassembled both by a detachable fitting mechanism or a screwing mechanism connected to the operation portion. And
It is configured to be disposable after one or a plurality of purse string suturing procedures.

以上のように構成される本発明によれば、顎部の挿入管部に対する屈曲角度が如何なる場合であっても、開閉操作ロッドのX軸方向移動動作による顎開閉ガイド機構又はX軸周り回転動作による顎開閉ガイド機構のみで顎部の把持動作が行われるので、把持動作の際、特許文献1に記載の巾着縫合用器具のような顎部と操作ロッドとの間のリンク機構部分が挿入管部の径方向外側に大きく張り出すことはなく、手術時に人体内部に広いスペースが無い場合であっても、把持動作によって顎開閉駆動機構の一部が人体に不意に接触することが避けられ、安全に巾着縫合作業を行うことができる。   According to the present invention configured as described above, regardless of the bending angle of the jaw portion with respect to the insertion tube portion, the jaw opening / closing guide mechanism by the movement operation in the X axis direction of the opening / closing operation rod or the rotation operation around the X axis Since the jaw portion is gripped only by the jaw opening / closing guide mechanism by the chin, the link mechanism portion between the jaw portion and the operation rod, such as the purse string suture instrument described in Patent Document 1, is inserted into the insertion tube during the gripping operation. Even if there is no large space inside the human body at the time of surgery, it is avoided that a part of the jaw opening / closing drive mechanism suddenly contacts the human body due to the gripping operation, The purse string sewing operation can be performed safely.

また、顎部の第1顎及び第2顎で生体管の各切断端部を把持した状態で各第1凹条溝及び各第2凹条溝にそれぞれ第1縫合針及び第2縫合針を通過させるだけで前記各切断端部の巾着縫合が可能となるので、巾着縫合作業の時間を短縮して手術時の人体への負担も少ない低侵襲性を確保することができる。   Further, the first suture needle and the second suture needle are respectively inserted into the first groove groove and the second groove groove in a state where the cut end portions of the living body tube are grasped by the first jaw and the second jaw of the jaw portion. Since the purse string sutures at the respective cut ends can be performed only by passing them through, the time required for the purse string stitching operation can be shortened, and the minimally invasiveness with less burden on the human body during the operation can be ensured.

また、部品点数が最小限の軽量・コンパクトでシンプルな構成の顎開閉ガイド機構もしくは顎開閉ガイド機構により顎部の開閉動作を滑らかに行えることから、経年変化等により顎部の開閉動作の時間が長くなることによる操作性や手術者の使用感が損なわれることもなく、操作性、使用感、安全性及び信頼性等が確保される。   In addition, the jaw opening / closing guide mechanism or the jaw opening / closing guide mechanism with the minimum number of parts can be used to smoothly open and close the jaws. Operability, a feeling of use, safety, reliability, etc. are ensured, without impairing the operativity and operator's feeling of use by becoming long.

また、顎部で行われる巾着縫合作業を手術者が被手術者の人体から離れた操作部側で行えることから、手術の安全性をさらに向上させることができる。   In addition, since the purse string sewing operation performed at the jaw part can be performed on the operation unit side away from the human body of the operator, the safety of the operation can be further improved.

また、顎部の角度変更動作を操作する屈曲操作部材を利用して顎部にまで縫合針を到達させせることができるので、縫合針を顎部にまで到達さるための構造を別途挿入管部内部に設ける必要がなく、最少部品点数による簡潔な構成で低コストな巾着縫合デバイスを提供できる。   In addition, since the suturing needle can be made to reach the jaw using a bending operation member for manipulating the angle changing operation of the jaw, a structure for reaching the suturing needle to the jaw is separately inserted. There is no need to provide it inside, and a low cost purse string suturing device can be provided with a simple configuration with a minimum number of parts.

また、顎部は、第1顎と第2顎が離間し開き姿勢に保持する付勢部材が設けられることから、閉動作のみの顎開閉駆動機構の形成が可能であり、構造がコンパクトで簡素化できる。   In addition, since the jaw part is provided with a biasing member that keeps the first jaw and the second jaw apart and holds the jaws in an open position, it is possible to form a jaw opening / closing drive mechanism only for the closing operation, and the structure is compact and simple Can be

また、屈曲角度操作手段における回転駆動手段の螺進又は螺退動作により、挿入管部に対する屈曲操作部材のX軸方向移動量を細かく調整できるので、顎部の挿入管部に対する屈曲角度を細かく変更させることができる。   Further, the amount of movement of the bending operation member relative to the insertion tube portion in the X-axis direction can be finely adjusted by the screwing or retraction operation of the rotation driving means in the bending angle operation device, so that the bending angle of the jaw portion with respect to the insertion tube portion can be finely changed. Can be made.

また、顎開閉操作手段及び屈曲角度操作手段として電動マイクロリニアアクチュエータもしくは減速機付小型電動モータを用いたパワーアシスト機構を構成することにより、顎開閉操作及び顎部屈曲操作を全て自動制御化できることから、巾着縫合手術の省力化、容易化及び操作性の向上が可能となる。   Further, by configuring a power assist mechanism using an electric micro linear actuator or a small electric motor with a reduction gear as a jaw opening / closing operation means and a bending angle operation means, all jaw opening / closing operations and jaw bending operations can be automatically controlled. Further, labor saving, facilitation and operability of the purse string suture operation can be improved.

また、顎部は第1支軸及び第2支軸を引抜き、環状把手部を含む操作部は連結を解除することにより挿入管部から切り離し、挿入管部は長手方向に2分割することで、解体された構成部材の消毒洗浄を容易に行なうことができ、巾着縫合デバイスの衛生管理の信頼性が確保される。また、医療適合性硬質樹脂材料から分解可能に構成された第1顎及び第2顎、前記挿入管部、前記開閉操作ロッドなどの生体内の挿入される構成部材は、巾着縫合処置後に選択的に廃棄(使い捨て)可能(ディスポ化)にすることができることから、巾着縫合デバイスの衛生管理の信頼性が一層向上する。   In addition, the jaw part pulls out the first support shaft and the second support shaft, the operation part including the annular handle part is separated from the insertion pipe part by releasing the connection, and the insertion pipe part is divided into two in the longitudinal direction, The disassembled components can be easily disinfected and cleaned, and the hygiene management reliability of the purse string suture device is ensured. In addition, constituent members to be inserted into the living body, such as the first jaw and the second jaw configured to be disassembled from the medically compatible hard resin material, the insertion tube portion, and the opening / closing operation rod, are selectively used after the purse string suture treatment. Therefore, the reliability of sanitary management of the purse string suture device is further improved.

さらに、顎開閉操作手段及び屈曲角度操作手段がいずれも操作部に集中し配置されることから、巾着縫合デバイスの全ての操作を手術者の片手などにより容易に実行することができる。   Furthermore, since both the jaw opening / closing operation means and the bending angle operation means are concentrated on the operation portion, all operations of the purse string suturing device can be easily performed with one hand of the operator.

したがって、本発明によれば、顎開閉駆動機構及び顎部屈曲駆動機構を最少限の部品点数により簡潔かつ軽量・コンパクト化し、顎部の挿入管部に対する屈曲角度が如何なる場合であっても顎部の開閉動作及び被縫合体の巾着縫合動作が可能で、安全性、信頼性、機能性、操作性、使用感、低侵襲性、衛生管理性及び経済性を向上させた低侵襲巾着縫合デバイスを提供することができる効果がある。
本発明の目的、特徴、局面、及び利点は、以下の詳細な説明と添付図面とによって、一層明白となる。
Therefore, according to the present invention, the jaw opening / closing drive mechanism and the jaw bending drive mechanism are simplified, lightweight, and compact with the minimum number of parts, and the jaw part can be bent at any angle with respect to the insertion tube part of the jaw part. A minimally invasive purse-string suture device that is capable of opening and closing and purse-string stitching of the body to be sutured, and has improved safety, reliability, functionality, operability, usability, minimally invasiveness, hygiene management, and economy There is an effect that can be provided.
Objects, features, aspects, and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

本発明の実施形態1に係る低侵襲巾着縫合デバイス1の全体組立平面図である。1 is an overall assembly plan view of a minimally invasive purse string suturing device 1 according to Embodiment 1 of the present invention. 図1の顎部3(開き状態)のA−A線矢視側面図である。It is an AA arrow directional side view of the jaw part 3 (open state) of FIG. 図1の操作部4のB−B線矢視側面図である。It is a BB arrow directional side view of the operation part 4 of FIG. 図1の顎部3及び挿入管部2先端部のC部拡大平面図である。It is the C section enlarged plan view of the jaw part 3 and the insertion tube part 2 tip part of FIG. (a)は図1の操作部4のD−D線縦断面図、(b)は(a)のQ部の変形実施形態の縦断面図である。(A) is the DD sectional view taken on the line of the operation section 4 in FIG. 1, and (b) is a longitudinal section view of a modified embodiment of the Q section in (a). 図4の顎部3が挿入管部2に沿ってX軸方向に延びる直線状態の姿勢となった顎部3及び挿入管部2先端部の拡大平面図である。FIG. 5 is an enlarged plan view of the jaw portion 3 and the distal end portion of the insertion tube portion 2 in a linear state in which the jaw portion 3 of FIG. 4 extends along the insertion tube portion 2 in the X-axis direction. 図6の顎部3直線状態における操作部4の縦断面図である。It is a longitudinal cross-sectional view of the operation part 4 in the jaw part 3 linear state of FIG. 図7の操作部4のE−E線平断面図である。It is the EE line plane sectional view of the operation part 4 of FIG. (a)は図6の顎部3及び挿入管部2先端部直線状態のF−F線縦断面図、(b)は(a)のI部に相当する変形実施形態の顎開閉ガイド機構部の要部拡大図である。6A is a longitudinal sectional view taken along line F-F in a straight state of the jaw portion 3 and the insertion tube portion 2 in FIG. 6, and FIG. 5B is a jaw opening / closing guide mechanism portion of a modified embodiment corresponding to the portion I of FIG. FIG. 図8の操作部4において、開閉操作ロッド71をX軸前方向に移動させた直後の状態を示す平断面図である。FIG. 9 is a plan sectional view showing a state immediately after the opening / closing operation rod 71 is moved in the X-axis forward direction in the operation unit 4 of FIG. 8. 開閉操作ロッド71をX軸前方向に移動させた直後(図10)の顎部3及び挿入管部2先端部直線状態の縦断面図である。It is a longitudinal cross-sectional view of the jaw part 3 and the insertion tube part 2 tip part linear state immediately after moving the opening / closing operation rod 71 in the X-axis front direction (FIG. 10). (a)は図2の顎部3の開き状態の要部簡略図、(b)は、(a)の顎部3の開き状態から、顎開閉操作ノブ8をX軸前方向に移動させた、顎部3の閉じ状態を示す要部簡略図である。2A is a simplified view of the main part of the jaw 3 in the opened state in FIG. 2, and FIG. 2B is a diagram in which the jaw opening / closing operation knob 8 is moved in the X-axis forward direction from the opened state of the jaw 3 in FIG. FIG. 3 is a schematic view of a main part showing a closed state of a jaw part 3. 図12(b)の顎部3のG−G線縦断面図である。It is a GG line longitudinal cross-sectional view of the jaw part 3 of FIG.12 (b). 巾着縫合作業途中の状態を示す図13(a)の顎部3のH−H線縦断面図である。It is a HH line longitudinal section of jaw part 3 of Drawing 13 (a) showing a state in the middle of purse string sewing operation. 巾着縫合作業終了直前の状態を示す図13(a)の顎部3のH−H線縦断面図である。FIG. 14 is a vertical cross-sectional view taken along the line HH of the jaw portion 3 of FIG. 図1の低侵襲巾着縫合デバイス1を腹腔孔から体腔内の病変臓器例えば腸などの生体管T1、T2の切断端部C1、C2の近傍まで挿入し、生体管病変部T3切断除去後の切断開口端部C1、C2の巾着縫合手術を行なう状態を説明するための概念図である。The minimally invasive purse string suturing device 1 of FIG. 1 is inserted from the abdominal cavity to a lesioned organ in the body cavity, for example, to the vicinity of the cut ends C1 and C2 of the biological tubes T1 and T2, and the cut after the biological tube lesioned portion T3 is cut and removed. It is a conceptual diagram for demonstrating the state which performs the purse string suture operation of the opening edge parts C1 and C2. 本発明の実施形態2に係る低侵襲巾着縫合デバイス1Aの操作部4Aの縦断面図である。It is a longitudinal cross-sectional view of the operation part 4A of the minimally invasive purse string suture device 1A according to Embodiment 2 of the present invention. (a)は本発明の実施形態3に係る低侵襲巾着縫合デバイス1Bの全体組立平面図、(b)は(a)のM−M線矢視断面図、(c)は(a)のL−L線矢視断面図である。(A) is the whole assembly top view of the minimally invasive purse string suture device 1B which concerns on Embodiment 3 of this invention, (b) is MM arrow sectional drawing of (a), (c) is L of (a). FIG. 図18(a)の低侵襲巾着縫合デバイス1Bの操作部4Bの縦断面図である。It is a longitudinal cross-sectional view of the operation part 4B of the minimally invasive purse string suturing device 1B of Fig.18 (a). 図18(a)の低侵襲巾着縫合デバイス1Bの操作部4Bの平面図である。It is a top view of the operation part 4B of the minimally invasive purse string suture device 1B of Fig.18 (a). 本発明の実施形態4に係る低侵襲巾着縫合デバイス1Cの操作部4Cの要部縦断面図である。It is a principal part longitudinal cross-sectional view of the operation part 4C of the minimally invasive purse string suture device 1C which concerns on Embodiment 4 of this invention. 本発明の実施形態5に係る低侵襲巾着縫合デバイス1Dの顎開閉駆動機構を説明するための顎部3Dの要部縦断面図で、(a)は開閉操作ロッド7DをX軸前方向に移動させた直後の顎部3D及び挿入管部2D先端部直線状態の要部縦断面図、(b)は(a)のJ部に相当する変形実施形態の顎開閉ガイド機構部の要部拡大図である。It is a principal part longitudinal cross-sectional view of the jaw part 3D for demonstrating the jaw opening / closing drive mechanism of the minimally invasive purse string suture device 1D which concerns on Embodiment 5 of this invention, (a) moves the opening / closing operation rod 7D to the X-axis front direction. The main part longitudinal cross-sectional view of the jaw part 3D and the insertion tube part 2D distal end straight state immediately after being made, (b) is an enlarged view of the main part of the jaw opening / closing guide mechanism part of the modified embodiment corresponding to the J part of (a) It is. 本発明の実施形態6に係る低侵襲巾着縫合デバイス1Eの操作部4Eの要部縦断面図である。It is a principal part longitudinal cross-sectional view of the operation part 4E of the minimally invasive purse string suture device 1E which concerns on Embodiment 6 of this invention. 本発明の実施形態7に係る低侵襲巾着縫合デバイス1Fの顎開閉駆動機構を説明するための顎部3の要部縦断面図で、(a)は開閉操作ロッド7FをX軸前方向に移動させた直後の顎部3及び挿入管部2F先端部直線状態の要部縦断面図、(b)は(a)のK−K線矢視断面図、(c)は(a)のK−K線矢視部に相当する変形実施形態の顎開閉ガイド機構部の要部拡大図である。It is a principal part longitudinal cross-sectional view of the jaw part 3 for demonstrating the jaw opening / closing drive mechanism of the minimally invasive purse string suture device 1F which concerns on Embodiment 7 of this invention, (a) moves the opening / closing operation rod 7F to the X-axis front direction. The main part longitudinal cross-sectional view of the jaw part 3 and the insertion tube part 2F distal end straight state immediately after being made, (b) is a cross-sectional view taken along line KK in (a), and (c) is K- in (a). It is a principal part enlarged view of the jaw opening / closing guide mechanism part of deformation | transformation embodiment corresponded to a K line arrow part. (a)は図24の低侵襲巾着縫合デバイス1Fの操作部4Fの要部縦断面図、(b)は本発明の実施形態8に係る低侵襲巾着縫合デバイス1Gの操作部4Gの要部縦断面図である。(A) is a longitudinal sectional view of the main part of the operation part 4F of the minimally invasive purse string suturing device 1F in FIG. 24, and (b) is a longitudinal section of the main part of the operation part 4G of the minimally invasive purse string suturing device 1G according to Embodiment 8 of the present invention. FIG. 図18の低侵襲巾着縫合デバイス1Bの縫合針カートリッジ11の要部概念図で、(a)は要部平面図、(b)は要部側面図、(c)は背面図、(d)は縫合針先端部11a1(11b1)の拡大図である。It is a principal part conceptual diagram of the suture needle cartridge 11 of the minimally invasive purse string suturing device 1B of FIG. 18, (a) is a principal part top view, (b) is a principal part side view, (c) is a rear view, (d) is a rear view. It is an enlarged view of suture needle tip 11a1 (11b1). 図18の低侵襲巾着縫合デバイス1Bのチューブ状屈曲操作部材41後端部内に縫合針カートリッジ11の一対の縫合針11a、11b先端部を挿入する際に適用される縫合針カートリッジセッティング治具80の概念図で、(a)は平面図、(b)は背面図である。A suture needle cartridge setting jig 80 applied when inserting the distal ends of the pair of suture needles 11a and 11b of the suture needle cartridge 11 into the rear end portion of the tubular bending operation member 41 of the minimally invasive purse string suture device 1B of FIG. It is a conceptual diagram, (a) is a plan view, (b) is a rear view. (a)は本発明の実施形態9に係る低侵襲巾着縫合デバイス1Hの挿入管部2Hの断面図、(b)は(a)の巾着縫合デバイス1Hの縫合針カートリッジ11Hを説明するための要部鳥瞰図、(c)は(a)のN部に相当する部分の変形実施形態を示す部分拡大図である。(A) is sectional drawing of the insertion tube part 2H of the minimally invasive purse string suture device 1H which concerns on Embodiment 9 of this invention, (b) is the key for demonstrating the suture needle cartridge 11H of the purse string suture device 1H of (a). A partial bird's-eye view, (c) is a partially enlarged view showing a modified embodiment of the portion corresponding to the N portion of (a). (a)は本発明の実施形態10に係る低侵襲巾着縫合デバイス1J(図30)の縫合針カートリッジ11J、(b)〜(d)は各種変形実施形態の縫合針カートリッジ11K、11L、11Mを説明するための要部側面図である。(A) is a suture needle cartridge 11J of a minimally invasive purse string suture device 1J (FIG. 30) according to Embodiment 10 of the present invention, and (b) to (d) are suture needle cartridges 11K, 11L, and 11M of various modified embodiments. It is a principal part side view for demonstrating. 本発明の実施形態10に係る低侵襲巾着縫合デバイス1Jの顎部屈曲駆動機構を説明するための要部平面図である。It is a principal part top view for demonstrating the jaw part bending drive mechanism of the minimally invasive purse string suture device 1J which concerns on Embodiment 10 of this invention. 従来(特許文献1)の巾着縫合器具及び縫合針カートリッジの鳥瞰図である。It is a bird's-eye view of the conventional purse string suture instrument and suture needle cartridge. 図31の顎部の鳥瞰図である。It is a bird's-eye view of the jaw part of FIG.

以下、本発明の低侵襲巾着縫合デバイスを実施するための形態の具体例を、添付図面を参照しながら説明する。   Hereinafter, the specific example of the form for implementing the minimally invasive purse string suture device of this invention is demonstrated, referring an accompanying drawing.

本発明の低侵襲巾着縫合デバイス1は、図16に示すように、自然開口部越管腔内視鏡手術(NOTES)において、サーキュラー吻合装置90を用い人体Mの例えば腸などの生体管Tの病巣部T3を切除して残る正常な生体管T1、T2の切断端部C1、C2双方同士を吻合する直前に、各切断端部C1、C2を把持して、図14、15に示すように、縫合針カートリッジ11(図19、25)の細長い第1及び第2縫合針11a、11bと縫合糸12とを用いて切断開口端部C1、C2に巾着縫合を施して一時的にその開口を塞ぐためのものである。
(実施形態1)
As shown in FIG. 16, the minimally invasive purse string suturing device 1 of the present invention uses a circular anastomosis device 90 in a natural opening transluminal endoscopic operation (NOTES), for example, a living body T of a human body M such as an intestine. Immediately before anastomosis between the cut ends C1 and C2 of the normal biological tubes T1 and T2 remaining after the lesion T3 is excised, the cut ends C1 and C2 are held, as shown in FIGS. Using the elongated first and second suture needles 11a and 11b and the suture thread 12 of the suture needle cartridge 11 (FIGS. 19 and 25), the cutting opening ends C1 and C2 are subjected to the purse string suture to temporarily open the opening. It is for closing.
(Embodiment 1)

本発明の一実施形態(実施形態1)に係る低侵襲巾着縫合デバイス1は、図1〜図3に示すように、細長い直線状をなす断面略円筒状の挿入管部2と、挿入管部2の先端に接続され、生体管T1、T2の切断端部C1、C2に巾着縫合を施す際、各生体管T1、T2の切断端部C1、C2を径方向から把持する顎部3と、挿入管部2の後端に接続され、顎部3を操作する操作部4とを備えている。   A minimally invasive purse string suturing device 1 according to an embodiment (Embodiment 1) of the present invention includes, as shown in FIGS. A jaw 3 that is connected to the distal ends of the body tubes T2 and T2 and holds the cut ends C1 and C2 of the biological tubes T1 and T2 from the radial direction when performing purse string stitching on the cut ends C1 and C2 of the biological tubes T1 and T2. An operation unit 4 that is connected to the rear end of the insertion tube unit 2 and operates the jaw 3 is provided.

ここで、図1における巾着縫合デバイス1の挿入管部3の主軸であるX軸を基準として、直交する3軸のX軸(挿入管部3の主軸、先端部又は前部・基端部又は後部方向)、Y軸(図示紙面内左右方向)、Z軸(図示紙面直交方向)を定義する。また、顎部3側を先端部又は前部、操作部4側を後端部又は後部と呼ぶ。   Here, with reference to the X axis that is the main axis of the insertion tube portion 3 of the purse string suturing device 1 in FIG. 1, three orthogonal X axes (the main axis, the distal end portion or the front / base end portion of the insertion tube portion 3 or The rear direction), the Y axis (the left-right direction in the drawing), and the Z axis (the direction orthogonal to the drawing) are defined. Also, the jaw 3 side is referred to as the front end or front, and the operation unit 4 side is referred to as the rear end or rear.

巾着縫合デバイス1を構成する各部材は、耐腐食性、耐薬品性を備えるとともに、加熱滅菌に耐え得る温度耐久性を備える医療適合性材料からなり、特に滅菌を容易にするため、後述するが、部品単位で分解可能に形成されることが望ましく、ケースバイケースで部品単位又は縫合針カートリッジなどを使い捨てとすることもできる。   Each member constituting the purse string suturing device 1 is made of a medically compatible material having corrosion resistance and chemical resistance and temperature durability capable of withstanding heat sterilization. In addition, it is desirable to be formed so that it can be disassembled in parts, and the parts or the suture needle cartridge can be made disposable on a case-by-case basis.

挿入管部2及び顎部3は、状況に応じて手術に耐える外径及び長さに設定自在で様々な長さのものに交換可能で、挿入部は高剛性及び高弾力性を有する医療適合性材料の外径略12mm以下の長尺管状体(略円筒)である。   Insertion tube part 2 and jaw part 3 can be set to an outer diameter and length that can withstand surgery depending on the situation and can be exchanged for various lengths. The insertion part has high rigidity and high elasticity. It is a long tubular body (substantially cylindrical) having an outer diameter of approximately 12 mm or less.

挿入管部2の先端周縁のY軸方向図示左側には、顎部3を支持するための第1支持突起2aがX軸前方向に突設される一方、挿入管部2の後端周りには、その他の領域(挿入部)よりも径が拡大(拡径)する環状把手部2bが設けられている。   A first support protrusion 2a for supporting the jaw portion 3 is provided on the left side of the peripheral edge of the distal end of the insertion tube portion 2 in the Y-axis direction. Is provided with an annular handle portion 2b whose diameter is larger (expanded) than other regions (insertion portions).

挿入管部2における第1支持突起2aのX軸を挟んだ反対側の管壁には、図5(a)及び図7に示すように、X軸方向に延びる細い貫通孔2cが一対並設されている。   A pair of thin through holes 2c extending in the X-axis direction are provided in parallel on the tube wall on the opposite side of the insertion tube portion 2 across the X-axis of the first support protrusion 2a, as shown in FIGS. Has been.

また、環状把手部2bにおける両貫通孔2cの並設方向一方側には、図5(a)に示すように、内周面に雌螺旋2eが螺刻された螺旋孔2dがX軸方向に貫通形成されている。   Further, on one side of the annular handle portion 2b in the side-by-side direction of the two through holes 2c, as shown in FIG. 5A, a spiral hole 2d in which a female spiral 2e is threaded on the inner peripheral surface is provided in the X-axis direction. It is formed through.

さらに、挿入管部2の後端側における第1支持突起2aに対応するY軸方向図示左側の管壁には、図8及び図10に示すように、X軸方向に延びて挿入管部2の後端に開口するスリット2fが形成されている。   Further, on the tube wall on the left side in the Y-axis direction corresponding to the first support protrusion 2a on the rear end side of the insertion tube portion 2, as shown in FIGS. 8 and 10, the insertion tube portion 2 extends in the X-axis direction. A slit 2f opening at the rear end is formed.

顎部3は、挿入管部3のX軸に対して左右方向であるY軸方向に屈曲する屈曲動作を行うことができる。屈曲動作は、Y軸方向への屈曲動作に代えて、X軸に対して上下方向のZ軸方向に屈曲する屈曲動作とすることもできる。   The jaw portion 3 can perform a bending operation of bending in the Y-axis direction that is the left-right direction with respect to the X-axis of the insertion tube portion 3. The bending operation may be a bending operation that bends in the Z-axis direction in the vertical direction with respect to the X-axis, instead of the bending operation in the Y-axis direction.

顎部3は、図4、図6、図9及び図11に示すように、両貫通孔2cの並設方向(Z軸方向)に延びる第1支軸h1によって後端が第1支持突起2aに回動可能に軸支された第1顎5と、第1支軸h1に対して直交方向に延びる第2支軸h2によって後端近傍が第1顎5の後端近傍に第1顎5方向(Z軸方向)に回動可能に軸支された第2顎6とを備え、第2顎6は、第1顎5に対して第2支軸h2回りに回動し接近又は離間することにより第1顎5とで把持動作を行う構成である。   As shown in FIGS. 4, 6, 9 and 11, the jaw 3 has a first support protrusion 2 a at the rear end by a first support shaft h <b> 1 extending in the direction in which both through-holes 2 c are arranged side by side (Z-axis direction). The first jaw 5 that is pivotally supported by the first jaw 5 and the second support shaft h2 that extends in a direction orthogonal to the first support shaft h1 are located near the rear end of the first jaw 5 near the rear end of the first jaw 5. And a second jaw 6 pivotally supported in a direction (Z-axis direction). The second jaw 6 rotates around the second support shaft h2 with respect to the first jaw 5 and approaches or separates. Thus, the gripping operation is performed with the first jaw 5.

第1顎5は、図13(a)に示すように、その長手方向に見て断面略半円状に形成されており、図2に示すように、長手方向(Y軸方向)後端側に位置する回動支持部5aと、長手方向(Y軸方向)中途部から先端まで延びる第1把持部5bとで構成されている。   As shown in FIG. 13A, the first jaw 5 is formed in a substantially semicircular cross section when viewed in the longitudinal direction, and as shown in FIG. 2, the longitudinal direction (Y-axis direction) rear end side. And a first gripping part 5b extending from the middle part in the longitudinal direction (Y-axis direction) to the tip.

回動支持部5aの第1支軸h1と交差する幅方向の一方側(図13(b)のY軸方向図示右側)は、後端側の挿入管部2側に突出して断面略扇状支持片5cが形成され(図13(a)、(b))、図4及び図6に示すように、支持片5cが第1支軸h1により第1支持突起2aに回転可能に接続(軸支)されている。   One side in the width direction crossing the first support shaft h1 of the rotation support portion 5a (the right side in the Y-axis direction in FIG. 13B) protrudes toward the insertion tube portion 2 on the rear end side and is supported in a substantially fan-shaped cross section. A piece 5c is formed (FIGS. 13A and 13B), and as shown in FIGS. 4 and 6, the support piece 5c is rotatably connected to the first support protrusion 2a by the first support shaft h1 (shaft support). )

また、回動支持部5aの反挿入管部2側(前側)には、図9に示すように、第2顎6側に開口する第1凹部51が凹陥形成されている。   Moreover, as shown in FIG. 9, the 1st recessed part 51 opened to the 2nd jaw 6 side is recessedly formed in the anti-insertion pipe part 2 side (front side) of the rotation support part 5a.

第1把持部5bは、回動支持部5aの第1支軸h1と交差する幅方向他方側(図13(b)のY軸方向図示左側)から反挿入管部2側(図13(b)のX軸方向図示上側)に延びる断面略扇状(図13(a))をなし、図2に示すように、第2顎6に対向する側に複数の第1歯部52を有する櫛歯状に形成されている。   The first gripping portion 5b extends from the other side in the width direction intersecting the first support shaft h1 of the rotation support portion 5a (the left side in the Y-axis direction in FIG. 13B) to the side opposite to the insertion tube portion 2 (FIG. 13B). ) In the X-axis direction on the upper side in FIG. 13 (a), and has a plurality of first teeth 52 on the side facing the second jaw 6 as shown in FIG. It is formed in a shape.

各第1歯部52は、図14及び図15に示すように、第2顎6側に行くにつれて各第1歯部52の並設方向(X軸方向)に互いに接近する一対の第1側面52aと、第1側面52aにおける第2顎6側の縁部を繋ぐ第1平坦面52bとで略台形の山形状に形成され、その先端には、第1凹条溝53が第1歯部52の並設方向(X軸方向)に延設されている。   As shown in FIGS. 14 and 15, each first tooth portion 52 is a pair of first side surfaces that approach each other in the juxtaposed direction (X-axis direction) of each first tooth portion 52 as it goes to the second jaw 6 side. 52a and a first flat surface 52b connecting the edges of the first side surface 52a on the second jaw 6 side are formed into a substantially trapezoidal mountain shape, and a first groove 53 is formed at the tip of the first tooth portion. 52 extend in the direction of parallel arrangement (X-axis direction).

第1凹条溝53は、図13(a)に示すように、第1縫合針11aを案内する断面略円形状の第1案内部53aと、第1案内部53aの第1歯部52先端側に開口するスリット状の第1開口部53bとで構成されている。   As shown in FIG. 13A, the first concave groove 53 includes a first guide part 53a having a substantially circular cross section for guiding the first suture needle 11a, and a tip of the first tooth part 52 of the first guide part 53a. It is comprised with the slit-shaped 1st opening part 53b opened to the side.

第2顎6は、図13(a)に示すように、その長手方向から見て断面略半円状に形成され、且つ、前記第1顎5と略対称形状をなしており、図2に示すように、長手方向一端(Y軸方向後端)外周に位置する縫合操作部6aと、長手方向中途部から先端(Y軸方向先端)まで延びる第2把持部6bとで構成されている。   As shown in FIG. 13 (a), the second jaw 6 is formed in a substantially semicircular cross section when viewed from the longitudinal direction, and is substantially symmetrical with the first jaw 5. As shown in FIG. As shown, the sewing operation portion 6a is located on the outer periphery of one end in the longitudinal direction (rear end in the Y-axis direction), and the second gripping portion 6b extends from the midway portion in the longitudinal direction to the distal end (front end in the Y-axis direction).

第1顎5及び第2顎6を互いに接近させると、図13(a)に示すように、その長手方向から見て直径略12mm以下の略円形状になり、図示しない腹腔孔に設けられるトラカール(トロッカー又はトラッカールともいう)に挿通し易い形状になっている。   When the first jaw 5 and the second jaw 6 are brought close to each other, as shown in FIG. 13 (a), the shape becomes a substantially circular shape having a diameter of about 12 mm or less when viewed from the longitudinal direction, and the trocar provided in the abdominal cavity not shown. It has a shape that is easy to pass through (also referred to as a trocar or tracker).

縫合操作部6aの第1支軸h1と交差する幅方向一方側(図9のZ軸方向図示左側)は、後端側の挿入管部2側に突出して断面略扇状支持片6cが形成されている。   One side in the width direction (the left side in the Z-axis direction in FIG. 9) intersecting the first support shaft h1 of the stitching operation portion 6a protrudes toward the insertion tube portion 2 side on the rear end side to form a substantially fan-shaped support piece 6c in cross section. ing.

また、縫合操作部6aの反挿入管部2側(前側)には、図9に示すように、第1顎5側に開口する第2凹部61が凹陥形成されている。   Further, as shown in FIG. 9, a second recess 61 that opens to the first jaw 5 side is formed as a recess on the anti-insertion tube portion 2 side (front side) of the suturing operation portion 6a.

第2把持部6bは、第1把持部5bと同様に、縫合操作部6aの第1支軸h1と交差する幅方向他方側(図13(b)のY軸方向図示左側)から反挿入管部2側(図13(b)のX軸方向図示上側)に延びる断面略扇状(図13(a))をなし、図2に示すように、第1顎5に対向する側に複数の第2歯部62を有する櫛歯状形成されている。   Similarly to the first gripping portion 5b, the second gripping portion 6b is the anti-insertion tube from the other side in the width direction crossing the first support shaft h1 of the suturing operation portion 6a (the left side in the Y-axis direction in FIG. 13B). The cross section is substantially fan-shaped (FIG. 13A) extending toward the portion 2 side (upper side in the X-axis direction in FIG. 13B), and as shown in FIG. A comb-teeth shape having two teeth 62 is formed.

各第2歯部62は、図14及び図15に示すように、第1顎5側に行くにつれて各第2歯部62の並設方向(X軸方向)に互いに接近する一対の第2側面62aと、第2側面62aにおける第1顎5側の縁部を繋ぐ第2平坦面62bとで略台形の山形状に形成され、第1顎5に対して第2顎6が接近して第1顎5及び第2顎6が閉じた状態になると、図12(b)に示すように、各第1平坦面52bと各第2平坦面62bとが略同一の平面状に位置するとともに、第2歯部62が第1歯部52の間にそれぞれ位置するように歯合する。   As shown in FIGS. 14 and 15, each second tooth portion 62 is a pair of second side surfaces that approach each other in the juxtaposed direction (X-axis direction) of each second tooth portion 62 as it goes to the first jaw 5 side. 62a and a second flat surface 62b connecting the edges of the second side surface 62a on the first jaw 5 side are formed into a substantially trapezoidal mountain shape, and the second jaw 6 approaches the first jaw 5 and the second jaw 6 approaches. When the first jaw 5 and the second jaw 6 are in a closed state, as shown in FIG. 12B, the first flat surfaces 52b and the second flat surfaces 62b are positioned on substantially the same plane, The second teeth 62 are engaged so as to be positioned between the first teeth 52, respectively.

各第2歯部62の先端には、図13(a)〜図15に示すように、第2凹条溝63が各第2歯部62の並設方向(X軸方向)に延設され、第2凹条溝63は、第2縫合針11bを案内する断面略円形状の第2案内部63aと、第2案内部63aの第2歯部62先端側に開口するスリット状の第2開口部63bとで構成されている。   As shown in FIGS. 13A to 15, a second groove 63 extends in the direction in which the second teeth 62 are juxtaposed (X-axis direction) at the tip of each second tooth 62. The second groove 63 has a second guide part 63a having a substantially circular cross section for guiding the second suture needle 11b, and a slit-like second opening opened to the distal end side of the second tooth part 62 of the second guide part 63a. It is comprised with the opening part 63b.

顎部3は、図2に示すように、一端側が第1凹部51に嵌挿される一方、他端側が第2凹部61に嵌挿された第1コイルバネ(付勢部材)13を有し、第1コイルバネ13の弾発力(付勢力)により第1顎5に対して第2顎6が離間して傾斜し開き状態の姿勢に保持されている。   As shown in FIG. 2, the jaw 3 has a first coil spring (biasing member) 13 having one end inserted into the first recess 51 and the other end inserted into the second recess 61. The second jaw 6 is separated from the first jaw 5 by the elastic force (biasing force) of the one coil spring 13 and is inclined and held in an open state.

操作部4と顎部3との間は、図1、図4及び図6に示すように、各貫通孔2cにX軸方向移動可能に挿通された一対の屈曲操作部材41を備えている。   Between the operation part 4 and the jaw part 3, as shown in FIGS. 1, 4 and 6, a pair of bending operation members 41 inserted through the through holes 2c so as to be movable in the X-axis direction are provided.

この実施形態の屈曲操作部材41は、弾性変形可能な可撓性を有する保護スプリング付きチューブであり、一方の屈曲操作部材41の先端は、第1顎5における後端部に位置する第1凹条溝53に、他方の屈曲操作部材41の先端は、第2顎6における後端部に位置する第2凹条溝63にそれぞれ接続されている。   The bending operation member 41 of this embodiment is a tube with a protective spring having flexibility that can be elastically deformed, and the distal end of one bending operation member 41 is a first recess located at the rear end portion of the first jaw 5. The leading end of the other bending operation member 41 is connected to the groove 53 and a second concave groove 63 located at the rear end of the second jaw 6.

すなわち、各屈曲操作部材41の先端は、顎部3の後端に接続され、図1、図4及び図6に示すように、一対の屈曲操作部材41の移動動作による顎部3の後端に対する押圧又は引込動作により、顎部3を第1支軸h1周りに回動させて挿入管部2のX軸に対して一方向(Y軸方向)に顎部3の角度を変更し屈曲させる顎部屈曲駆動機構を有している。   That is, the front end of each bending operation member 41 is connected to the rear end of the jaw 3, and as shown in FIGS. 1, 4, and 6, the rear end of the jaw 3 by the movement of the pair of bending operation members 41. The jaw portion 3 is rotated around the first support shaft h1 by the pressing or pulling-in operation to change the angle of the jaw portion 3 in one direction (Y-axis direction) with respect to the X axis of the insertion tube portion 2 and bend it. It has a jaw bending drive mechanism.

この場合、顎部3は、X軸方向に延びる姿勢とX軸に対して直交する姿勢との間において、X軸に対して一方向(Y軸方向)に略90°回動し屈曲可能となっている。   In this case, the jaw portion 3 can be bent by turning approximately 90 ° in one direction (Y-axis direction) with respect to the X-axis between a posture extending in the X-axis direction and a posture orthogonal to the X-axis. It has become.

また、この実施形態では、屈曲操作部材41全体が可撓性を有しているが、図4に示すように、少なくとも屈曲操作部材41の第1支軸h1に対応する支軸対応部41aに可撓性があればよい。   In this embodiment, the entire bending operation member 41 is flexible. However, as shown in FIG. 4, at least the supporting shaft corresponding portion 41 a corresponding to the first supporting shaft h <b> 1 of the bending operation member 41 is provided. It only needs to be flexible.

環状把手部2bの後部側には、一対の屈曲操作部材41の後端に連結される把手部材42が配設されている。この実施形態の把手部材42は、図3に示すように、屈曲操作部材41の後端から螺旋孔2dの開口周りまで延びる連結部42aと、連結部42aの螺旋孔2d側からX軸後方に延びる延出板42bとで略L字状に形成されている。   A handle member 42 connected to the rear ends of the pair of bending operation members 41 is disposed on the rear side of the annular handle portion 2b. As shown in FIG. 3, the handle member 42 of this embodiment includes a connecting portion 42a extending from the rear end of the bending operation member 41 to around the opening of the spiral hole 2d, and the X-axis rearward side from the spiral hole 2d side of the connecting portion 42a. The extending plate 42b extends to be substantially L-shaped.

延出板42bの後端側には、L字金具43が取り付けられ、連結部42aの螺旋孔2dに対応する箇所には、図5(a)及び図7に示すように、貫通孔42cがX軸方向に貫通形成されている。L字金具43のX軸方向後端の屈曲部は、図示しない縫合針カートリッジ(図26(a)、(b)参照)の第1縫合針11a及び第2縫合針11bの後端部が当接するストッパとなる。   An L-shaped metal fitting 43 is attached to the rear end side of the extension plate 42b. As shown in FIGS. 5A and 7, a through hole 42c is provided at a location corresponding to the spiral hole 2d of the connecting portion 42a. It is formed so as to penetrate in the X-axis direction. The bent portion at the rear end in the X-axis direction of the L-shaped metal fitting 43 is in contact with the rear ends of the first and second suture needles 11a and 11b of a suture needle cartridge (not shown) (see FIGS. 26A and 26B). It becomes a stopper to touch.

この実施形態の操作部4は、外周面に雄螺旋44bが螺刻された雄螺旋軸44aの後端部に連結されてこれを回転させるための手動回転駆動手段である顎部屈曲操作ノブ44を備え、雄螺旋軸44aを貫通孔42cに挿通させるとともに環状把手部2bの螺旋孔2d内の雌螺旋2eに雄螺旋44bが螺合される。   The operation portion 4 of this embodiment is connected to a rear end portion of a male spiral shaft 44a having a male spiral 44b threaded on the outer peripheral surface thereof, and is a jaw bending operation knob 44 which is a manual rotation driving means for rotating the same. The male spiral shaft 44a is inserted into the through hole 42c, and the male spiral 44b is screwed into the female spiral 2e in the spiral hole 2d of the annular handle portion 2b.

そして、屈曲操作ノブ44の正逆回転操作によるX軸方向への螺進又は螺退動作で把手部材42の連結部42aに連結された一対の屈曲操作部材41を挿入管部2のX軸方向に移動させて顎部3の角度変更(屈曲)動作を操作する構成となっている。   Then, the pair of bending operation members 41 connected to the connecting portion 42a of the handle member 42 by the forward or reverse rotation operation of the bending operation knob 44 in the X-axis direction is used as the insertion tube portion 2 in the X-axis direction. It is configured to operate the angle changing (bending) operation of the jaw 3 by moving the jaw 3.

このように、実施形態1においては、屈曲操作部材41、螺旋孔2d、雄螺旋軸44a及び顎部屈曲操作ノブ44から顎部屈曲駆動機構が構成される。   As described above, in the first embodiment, the bending operation member 41, the helical hole 2d, the male helical shaft 44a, and the jaw bending operation knob 44 constitute a jaw bending driving mechanism.

挿入管部2の内部には、X軸方向に移動可能な開閉操作ロッド7が挿通され、開閉操作ロッド7は、X軸方向の先端側に位置する第1ロッド7aと、X軸方向の後方側に位置する第2ロッド7bとを備えている。   An opening / closing operation rod 7 that is movable in the X-axis direction is inserted into the insertion tube portion 2, and the opening / closing operation rod 7 includes a first rod 7 a that is positioned on the distal end side in the X-axis direction and a rearward direction in the X-axis direction. And a second rod 7b located on the side.

第1ロッド7aの先端側(顎部3側)には、X軸前方向に延びてその先端側が挿入管部2の開口から延出した状態の板状部71が設けられている。   On the distal end side (jaw portion 3 side) of the first rod 7a, a plate-like portion 71 is provided that extends in the front direction of the X axis and the distal end side extends from the opening of the insertion tube portion 2.

この実施形態の板状部71先端の縫合操作部6aの支持片6c後端部(支持片5c向き側面の後端角部)に対向する部分には、図9(a)に示すように、先端に行くにつれて次第に支持片6cから離れるよう傾斜するガイド面71aが形成されている。   As shown in FIG. 9 (a), the portion facing the rear end portion of the support piece 6c (the rear end corner of the side face facing the support piece 5c) of the stitching operation portion 6a at the tip of the plate-like portion 71 of this embodiment A guide surface 71a is formed so as to be gradually separated from the support piece 6c toward the tip.

また、第1ロッド7aの後端側(反顎部3側)には、第1ロッド7aの後端に開口するとともにX軸に沿って延びる細長い嵌合凹部71bが凹陥形成されている。   In addition, an elongated fitting recess 71b that is open at the rear end of the first rod 7a and extends along the X-axis is formed in a recess on the rear end side (anterior jaw portion 3 side) of the first rod 7a.

一方、第2ロッド7bは、細長い略円筒状の第2ロッド本体72aと、第2ロッド本体72aの先端中央部分からX軸方向前方側に細長く延びて嵌合凹部71bにスライド可能に嵌挿されたスライド棒72bとを備え、第2ロッド本体72aの後端寄り外周面には、図10に示すように、底面の深さが浅い環状凹部72cが凹設されている。   On the other hand, the second rod 7b is elongated and extends from the central portion of the tip of the second rod main body 72a to the front side in the X-axis direction, and is slidably fitted into the fitting recess 71b. As shown in FIG. 10, an annular recess 72c having a shallow bottom surface is provided in the outer peripheral surface near the rear end of the second rod main body 72a.

そして、スライド棒72bには、第2コイルバネ73が巻装され、第2コイルバネ73の先端が第1ロッド7aの後端に、第2コイルバネ73の後端が第2ロッド本体72aの先端に当接していて、開閉操作ロッド7にX軸前方向の力が作用すると、第2コイルバネ73が縮んで衝撃を吸収する緩衝機能を有している。   A second coil spring 73 is wound around the slide rod 72b, the tip of the second coil spring 73 hits the rear end of the first rod 7a, and the rear end of the second coil spring 73 hits the tip of the second rod main body 72a. When a force in the forward direction of the X-axis is applied to the opening / closing operation rod 7 in contact with each other, the second coil spring 73 contracts to have a shock absorbing function for absorbing the impact.

この緩衝機能により、生体管T1、T2に過大な把持力が負荷するのを防止することで安全性が確保される。   By this buffering function, safety is ensured by preventing an excessive gripping force from being applied to the biological tubes T1, T2.

また、挿入管部2の後端寄りには、手動操作による顎開閉操作手段である短筒状の顎開閉操作ノブ8がX軸方向にスライド可能に外嵌合している。   Further, near the rear end of the insertion tube portion 2, a short cylindrical jaw opening / closing operation knob 8 which is a manual jaw opening / closing operation means is externally fitted to be slidable in the X-axis direction.

顎開閉操作ノブ8の先端側は、顎開閉操作ノブ8の中途部に比べて外径が小さい略テーパ状に縮径されており、環状の第1係合溝8a及び第2係合溝8bが外周先端側から順に並設されている。   The distal end side of the jaw opening / closing operation knob 8 is reduced in diameter so as to have a smaller outer diameter than the middle part of the jaw opening / closing operation knob 8, and the annular first engagement groove 8 a and second engagement groove 8 b. Are arranged in order from the outer peripheral tip side.

第1及び第2係合溝8a、8bの断面形状は、略同一な断面略直角三角形状に形成されており、X軸前方側の面がX軸に直交する方向に延び、X軸後方側の面が後側に行くにつれて次第に拡径するテーパ面が形成されている。   The first and second engaging grooves 8a and 8b have substantially the same cross-sectional shape of a substantially right triangle, and the front surface of the X-axis extends in a direction perpendicular to the X-axis. A tapered surface is formed which gradually increases in diameter as the surface of the surface goes to the rear side.

一方、顎開閉操作ノブ8の後端には、顎開閉操作ノブ8の中途部の径方向外側に拡径されたフランジ状把手部8cが設けられている。   On the other hand, at the rear end of the jaw opening / closing operation knob 8, a flange-like handle portion 8 c is provided which has a diameter expanded outward in the radial direction of the middle portion of the jaw opening / closing operation knob 8.

また、顎開閉操作ノブ8のX軸方向後端側における内周面には、径方向内側(Y軸方向右向き)に突出するとともにX軸方向に延びる連結プレート8dが設けられている。   Further, a connecting plate 8d that protrudes radially inward (rightward in the Y-axis direction) and extends in the X-axis direction is provided on the inner peripheral surface of the jaw opening / closing operation knob 8 on the rear end side in the X-axis direction.

連結プレート8dは、スリット2f内を通過してその先端部分が開閉操作ロッド7の環状凹部72cに嵌合している。   The connecting plate 8d passes through the slit 2f, and its tip is fitted in the annular recess 72c of the opening / closing operation rod 7.

また、挿入管部2後端寄りの外周面におけるスリット2fの延長線上には、図10に示すように、第2支持突起2gが径方向外側(Y軸方向左向き)に突設され、第2支持突起2gには、X軸方向に延びるフック9の中程が第1支軸h1と同方向(Z軸方向)に延びる第3支軸h3により回動可能に軸支されている。   Further, on the extended line of the slit 2f on the outer peripheral surface near the rear end of the insertion tube portion 2, as shown in FIG. 10, a second support projection 2g is projected radially outward (leftward in the Y-axis direction). The middle of the hook 9 extending in the X-axis direction is pivotally supported on the support protrusion 2g by a third support shaft h3 extending in the same direction (Z-axis direction) as the first support shaft h1.

フック9の後端側には、第1及び第2係合溝8a、8bに係脱可能な係合突起9aが顎開閉操作ノブ8の先端部外周面に向かって突設される一方、フック9の先端側の挿入管部2との対向面には、第3コイルバネ9bの一端が固着されている。   On the rear end side of the hook 9, an engaging protrusion 9 a that can be engaged with and disengaged from the first and second engaging grooves 8 a and 8 b is projected toward the outer peripheral surface of the distal end portion of the jaw opening / closing operation knob 8. One end of the third coil spring 9b is fixed to the surface of the end 9 facing the insertion tube portion 2 on the distal end side.

また、当該挿入管部2の外周面には、第3コイルバネ9bの他端が固着され、第3コイルバネ9bは、フック9を顎開閉操作ノブ8先端部外周面側(Y軸方向図示右向き)に回動付勢してフック9をX軸方向に延びる姿勢に保持するように構成されている。   Further, the other end of the third coil spring 9b is fixed to the outer peripheral surface of the insertion tube portion 2, and the third coil spring 9b attaches the hook 9 to the outer peripheral surface side of the distal end portion of the jaw opening / closing operation knob 8 (Y axis direction shown rightward). The hook 9 is configured to hold the hook 9 in a posture extending in the X-axis direction.

この実施形態の第1及び第2縫合針11a、11bは、ニッケルチタン合金などの超弾性合金やSUSなどの不銹鋼からなり、第1縫合針11aが一方の屈曲操作部材41に、第2縫合針11bが他方の屈曲操作部材41にそれぞれ挿通可能となっている。   The first and second suture needles 11a and 11b of this embodiment are made of superelastic alloy such as nickel titanium alloy or stainless steel such as SUS, and the first suture needle 11a is connected to one bending operation member 41 and the second suture needle. 11b can be inserted into the other bending operation member 41, respectively.

第1縫合針11aの全長は、一方の屈曲操作部材41に第1顎5を加えた全長より長く、第2縫合針11bの全長は、他方の屈曲操作部材41に第2顎6を加えた全長より長くなっている。   The total length of the first suture needle 11a is longer than the total length of the one bending operation member 41 plus the first jaw 5, and the total length of the second suture needle 11b is the addition of the second jaw 6 to the other bending operation member 41. It is longer than the total length.

そして、図8〜図11に示すように、例えば顎部3が挿入管部2のX軸方向に延びる姿勢で、且つ、フック9の係合突起9aが第1係合溝8aに係合する状態で顎開閉操作ノブ8をX軸方向の前方側(X1方向)にスライド移動させると、連結プレート8dを介して開閉操作ロッド7(72a、7b、73、72b、7a)がX軸方向の前方(X2方向)に移動し、開閉操作ロッド7の移動動作によりガイド面71aが縫合操作部6aの支持片6c後端部の第1顎5側角部に摺接して当該部分を次第に押圧することで第2顎6を第1コイルバネ13の付勢力に抗して第1顎5側へと回動させて(X3方向)第1顎5及び第2顎6を接近させ、第1顎5及び第2顎6で生体管T1、T2の切断端部C1、C2(図16)を把持するように構成されている。   As shown in FIGS. 8 to 11, for example, the jaw 3 is in a posture extending in the X-axis direction of the insertion tube 2, and the engagement protrusion 9 a of the hook 9 is engaged with the first engagement groove 8 a. When the jaw opening / closing operation knob 8 is slid forward in the X-axis direction (X1 direction) in this state, the opening / closing operation rod 7 (72a, 7b, 73, 72b, 7a) is moved in the X-axis direction via the connecting plate 8d. The guide surface 71a is moved forward (X2 direction), and the guide surface 71a is brought into sliding contact with the first jaw 5 side corner of the rear end portion of the support piece 6c of the suturing operation portion 6a by the moving operation of the opening / closing operation rod 7, and the portion is gradually pressed. As a result, the second jaw 6 is rotated toward the first jaw 5 against the urging force of the first coil spring 13 (in the X3 direction) to bring the first jaw 5 and the second jaw 6 closer to each other. And the second jaw 6 is configured to hold the cut ends C1 and C2 (FIG. 16) of the biological tubes T1 and T2. To have.

また、顎開閉操作ノブ8をX軸方向の前方側にスライド移動させると、第1係合溝8aにおけるX軸方向の後方の面がフック9の係合突起9a先端側を押圧し、係合突起9aが第1係合溝8aに摺接しながらフック9が第3コイルバネ9bの付勢力に抗して回動するとともに、係合突起9aが第2係合溝8bに対応すると、フック9は、第3コイルバネ9bの復元力により回動して係合突起9aが第2係合溝8bに係合し、挿入管部2に対する顎開閉操作ノブ8の位置が保持されるように構成されている。   When the jaw opening / closing operation knob 8 is slid to the front side in the X-axis direction, the rear surface in the X-axis direction of the first engagement groove 8a presses the front end side of the engagement protrusion 9a of the hook 9 to engage. When the protrusion 9a slides against the first engagement groove 8a and the hook 9 rotates against the urging force of the third coil spring 9b, and the engagement protrusion 9a corresponds to the second engagement groove 8b, the hook 9 The engagement projection 9a is rotated by the restoring force of the third coil spring 9b to engage the second engagement groove 8b, and the position of the jaw opening / closing operation knob 8 with respect to the insertion tube portion 2 is maintained. Yes.

さらに、図14及び図15に示すように、第1顎5及び第2顎6で生体管T1、T2の切断端部C1、C2(図16)を把持して生体管T1、T2の切断端部C1、C2の肉壁が第1歯部52及び第2歯部62に倣って断面波状となるように重なった状態で、縫合糸12の一端12aが接続された第1縫合針11aを各第1凹条溝53に、縫合糸12の他端12bが接続された第2縫合針11bを各第2凹条溝63にそれぞれ順に挿入管部2側からX5、X6方向に通過させることにより巾着縫合が施される巾着縫合機構を有している。   Further, as shown in FIGS. 14 and 15, the first jaw 5 and the second jaw 6 hold the cut ends C1 and C2 (FIG. 16) of the biological tubes T1 and T2, and the cut ends of the biological tubes T1 and T2. The first suture needle 11a to which one end 12a of the suture thread 12 is connected is connected to each other in a state in which the wall surfaces of the portions C1 and C2 are overlapped so as to have a corrugated cross section following the first tooth portion 52 and the second tooth portion 62. By passing the second suture needle 11b in which the other end 12b of the suture thread 12 is connected to the first concave groove 53 from the insertion tube portion 2 side in the X5 and X6 directions in order to the second concave groove 63, respectively. It has a purse string stitching mechanism for purse string purse.

一方、第1顎5及び第2顎6が接近した状態で、フック9の先端側を第3コイルバネ9bの付勢力に抗して挿入管部2側(Y軸方向右側)に押圧することによりフック9を回動させて係合突起9aと第2係合溝8bとの係合を解除し、顎開閉操作ノブ8をX軸方向後方側にスライド移動させると、連結プレート8dを介して開閉操作ロッド7がX軸方向後方側に移動し、開閉操作ロッド7の移動動作によりガイド面71aが縫合操作部6aの支持片6c後端部に対する押圧を解除することで第2顎6を第1コイルバネ13の復元力で反第1顎5側へと回動させて第1顎5及び第2顎6を離間させ開き状態になるように構成されている。   On the other hand, with the first jaw 5 and the second jaw 6 approaching each other, by pressing the distal end side of the hook 9 against the urging force of the third coil spring 9b toward the insertion tube portion 2 side (Y axis direction right side). When the hook 9 is rotated to disengage the engagement protrusion 9a from the second engagement groove 8b and the jaw opening / closing operation knob 8 is slid rearward in the X-axis direction, the hook 9 is opened / closed via the connecting plate 8d. The operating rod 7 moves to the rear side in the X-axis direction, and the guide surface 71a releases the pressure on the rear end portion of the supporting piece 6c of the suturing operation portion 6a by the moving operation of the opening / closing operating rod 7, whereby the second jaw 6 is moved to the first position. The first jaw 5 and the second jaw 6 are separated from each other by the restoring force of the coil spring 13 to the opposite side of the first jaw 5 to be opened.

なお、第1顎5及び第2顎6の把持動作は、顎部3が挿入管部2のX軸方向に延びる直線状態の姿勢でなく、屈曲状態でも行うことができる。すなわち、図1及び図4に示すような挿入管部2に対して顎部3が直交する屈曲姿勢で顎開閉操作ノブ8をX軸前方向にスライドさせると、図12(a)、(b)に示すように、開閉操作ロッド7のX軸前方向への移動動作により、ガイド面71aが縫合操作部6aの支持片6c後端部の第1顎5側角部に摺接して当該部分を次第に押圧することで第2顎6を第1コイルバネ13の付勢力に抗して第1顎5側へと回動させて(X4方向)第1顎5及び第2顎6を接近させ、第1顎5及び第2顎6で生体管T1、T2の切断端部C1、C2(図16)を把持するように構成されている。   Note that the gripping operation of the first jaw 5 and the second jaw 6 can be performed not in a straight posture in which the jaw portion 3 extends in the X-axis direction of the insertion tube portion 2 but also in a bent state. That is, when the jaw opening / closing operation knob 8 is slid forward in the X-axis direction in a bending posture in which the jaw portion 3 is orthogonal to the insertion tube portion 2 as shown in FIGS. 1 and 4, FIGS. ), The guide surface 71a is in sliding contact with the first jaw 5 side corner of the rear end of the support piece 6c of the suturing operation portion 6a by the movement operation of the opening / closing operation rod 7 in the forward direction of the X-axis. The second jaw 6 is rotated toward the first jaw 5 against the biasing force of the first coil spring 13 (X4 direction) by causing the first jaw 5 and the second jaw 6 to approach each other. The first jaw 5 and the second jaw 6 are configured to hold the cut ends C1 and C2 (FIG. 16) of the biological tubes T1 and T2.

つまり、この実施形態における巾着縫合デバイス1では、挿入管部2に対する顎部3の角度が如何なる場合であっても、開閉操作ロッド7の移動動作時にガイド面71aが第2顎6の縫合操作部6aの支持片6c後端部に摺接して第1及び第2顎5、6を開閉させることができる。   That is, in the purse string suturing device 1 according to this embodiment, the guide surface 71a is used for the suturing operation portion of the second jaw 6 when the opening / closing operation rod 7 is moved regardless of the angle of the jaw portion 3 with respect to the insertion tube portion 2. The first and second jaws 5 and 6 can be opened and closed in sliding contact with the rear end portion of the support piece 6c of 6a.

このように、実施形態1においては、第1顎5と第2顎5の間に設けられる付勢部材13と、X軸方向に移動可能な開閉操作ロッド7と、開閉操作ロッド7の板状部71先端部に第2顎6の支持片6c後端部に対向し形成されたガイド面71aとで第2顎を第1顎に対して開閉動作させる顎開閉ガイド機構と、フック9及び顎開閉操作ノブ8と、から顎開閉駆動機構が構成される。   Thus, in the first embodiment, the urging member 13 provided between the first jaw 5 and the second jaw 5, the opening / closing operation rod 7 movable in the X-axis direction, and the plate shape of the opening / closing operation rod 7 A jaw opening and closing guide mechanism for opening and closing the second jaw with respect to the first jaw with a guide surface 71a formed at the tip of the portion 71 and facing the rear end of the support piece 6c of the second jaw 6; The opening / closing operation knob 8 constitutes a jaw opening / closing drive mechanism.

なお、ガイド面71aは、この実施形態の図9(a)に示すような略平面状に替えて、図9(b)に示すような曲面状に形成してもよい。   The guide surface 71a may be formed in a curved surface shape as shown in FIG. 9B instead of the substantially flat shape as shown in FIG. 9A of this embodiment.

次に、低侵襲巾着縫合デバイス1を用いた生体管T1、T2の切断端部C1、C2(図16)に対する巾着縫合手術の手順の要点について説明する。   Next, the main points of the procedure of the purse string suture operation for the cut ends C1 and C2 (FIG. 16) of the biological tubes T1 and T2 using the minimally invasive purse string suture device 1 will be described.

まず、手術者は、低侵襲巾着縫合デバイス1を予め顎部3が挿入管部2のX軸方向に延びる直線姿勢で、且つ、フック9の係合突起9aが第1係合溝8aに係合する、顎部3の閉じ状態にしておく。   First, the surgeon engages the minimally invasive purse string suturing device 1 in a straight posture in which the jaw portion 3 extends in the X-axis direction of the insertion tube portion 2, and the engagement protrusion 9a of the hook 9 is engaged with the first engagement groove 8a. The jaws 3 are kept closed.

次に、人体に形成された腹腔孔に設けられるトラカール(図示しない)に低侵襲巾着縫合デバイス1を顎部3から差し込むとともに、生体管T1、T2の切断端部C1、C2の巾着縫合を施す部位に対して顎部3が適切な姿勢となるよう、屈曲操作ノブ44を操作し挿入管部2に対して屈曲させる。   Next, the minimally invasive purse string suturing device 1 is inserted from the jaw 3 into a trocar (not shown) provided in the abdominal cavity formed in the human body, and the purse string sutures of the cut ends C1 and C2 of the biological tubes T1 and T2 are performed. The bending operation knob 44 is operated to bend the insertion tube portion 2 so that the jaw portion 3 has an appropriate posture with respect to the site.

第1顎5及び第2顎6が、生体管T1、T2の切断端部C1、C2に対して略直交姿勢にするとともにフック9の先端側を押圧して係合突起9aと第2係合溝8bとの係合を解除し、顎開閉操作ノブ8をX軸方向後方にスライド移動させてガイド面71aが第2顎6の支持片6c後端部に対する押圧を解除し、第2顎6を第1コイルバネ13の復元力で第1顎5及び第2顎6を開き状態にした後、生体管T1、T2の切断端部C1、C2が第1及び第2顎5、6の間に位置するようにして、顎開閉操作ノブ8をX軸方向前方にスライド移動させる。すると、開閉操作ロッド7がX軸方向前方に移動してガイド面71aが第2顎6の支持片6c後端部に摺接し、第2顎6が第1顎5側に回動して第1及び第2顎5、6で生体管T1、T2の切断端部C1、C2を径方向から把持する。   The first jaw 5 and the second jaw 6 are brought into a substantially orthogonal posture with respect to the cut ends C1 and C2 of the biological tubes T1 and T2, and the distal end side of the hook 9 is pressed to engage with the engagement protrusion 9a. The engagement with the groove 8b is released, the jaw opening / closing operation knob 8 is slid rearward in the X-axis direction, the guide surface 71a releases the pressure on the rear end portion of the support piece 6c of the second jaw 6, and the second jaw 6 After the first jaw 5 and the second jaw 6 are opened by the restoring force of the first coil spring 13, the cut ends C1, C2 of the biological tubes T1, T2 are located between the first and second jaws 5, 6. The jaw opening / closing operation knob 8 is slid forward in the X-axis direction so as to be positioned. Then, the opening / closing operation rod 7 moves forward in the X-axis direction, the guide surface 71a comes into sliding contact with the rear end portion of the support piece 6c of the second jaw 6, and the second jaw 6 turns to the first jaw 5 side to rotate first. The cut ends C1 and C2 of the biological tubes T1 and T2 are gripped by the first and second jaws 5 and 6 from the radial direction.

次いで、手術者は、縫合針カートリッジ11の第1縫合針11a及び第2縫合針11bの後端部に連結される縫合操作部11c(図26参照)を操作して押し込み、図14及び図15に示すように、第1縫合針11aを各第1凹条溝53に、第2縫合針11bを各第2凹条溝63にそれぞれ挿入管部2側から通過させる。この場合、予め縫合糸12は、一端12aが第1縫合針11aの先端部に設けられた一対又は1つの縫合糸挿通口11a2に、他端12bが第2縫合針11bの先端部に設けられた一対又は1つの縫合糸挿通口11b2にそれぞれ挿通されている。   Next, the operator operates and pushes in the suturing operation portion 11c (see FIG. 26) connected to the rear ends of the first suturing needle 11a and the second suturing needle 11b of the suturing needle cartridge 11, and FIGS. As shown in FIG. 3, the first suture needle 11a is passed through each first concave groove 53 and the second suture needle 11b is passed through each second concave groove 63 from the insertion tube portion 2 side. In this case, the suture thread 12 is preliminarily provided at a pair or one suture insertion port 11a2 provided at one end 12a at the distal end portion of the first suture needle 11a and at the other end 12b at the distal end portion of the second suture needle 11b. The pair of or one suture thread insertion port 11b2 is inserted.

しかる後、第1縫合針11aの縫合糸挿通口11a2及び第2縫合針11bの縫合糸挿通口11b2から後方にそれぞれ縫合糸12の両端12a、12bを引抜いて取り外し、縫合糸12の一端12a側と他端12b側とを牽引しながら結紮して切断端部C1、C2の巾着縫合処置を完了する。   Thereafter, both ends 12a and 12b of the suture thread 12 are pulled out and removed backward from the suture insertion hole 11a2 of the first suture needle 11a and the suture insertion hole 11b2 of the second suture needle 11b, respectively, and one end 12a side of the suture thread 12 is removed. And the other end 12b side are ligated to complete the purse string suture treatment of the cut ends C1 and C2.

この巾着縫合作業の際に、図15に示す縫合糸12のUターン部12cが第1凹条溝53の第1開口部53b及び第2凹条溝63の第2開口部63bを通り抜けることにより顎部3の先端から縫合糸12が抜き出される。   During the purse string sewing operation, the U-turn portion 12 c of the suture thread 12 shown in FIG. 15 passes through the first opening 53 b of the first groove groove 53 and the second opening 63 b of the second groove groove 63. The suture thread 12 is extracted from the tip of the jaw 3.

その後、フック9の先端側を第3コイルバネ9bの付勢力に抗して挿入管部2側に押圧するとともに、顎開閉操作ノブ8をX軸後方向にスライドさせる。すると、開閉操作ロッド7がX軸後方向に移動してガイド面71aが縫合操作部6a後端部の押圧を解除し、第1コイルバネ13の復元力で第1及び第2顎5、6が離間し開き状態となり、巾着縫合された生体管T1、T2の切断端部C1、C2が開放される。   Thereafter, the front end side of the hook 9 is pressed against the insertion tube portion 2 against the biasing force of the third coil spring 9b, and the jaw opening / closing operation knob 8 is slid rearward in the X axis. Then, the opening / closing operation rod 7 moves in the rearward direction of the X axis, the guide surface 71a releases the pressing of the rear end portion of the suturing operation portion 6a, and the first and second jaws 5, 6 are moved by the restoring force of the first coil spring 13. The cut ends C1 and C2 of the biological tubes T1 and T2 that are separated and open and are sewn with a purse string are opened.

そして、再度顎部3を閉じ状態とするとともに挿入管部2のX軸方向に延びる直線姿勢に戻して腹腔孔のトラカール(図示しない)から低侵襲巾着縫合デバイス1を顎部3まで取り出して巾着縫合手術を終了する。
(実施形態2)
Then, the jaw part 3 is closed again and the insertion tube part 2 is returned to the linear posture extending in the X-axis direction, and the minimally invasive purse string suturing device 1 is taken out from the abdominal trocar (not shown) to the jaw part 3 to draw the purse. End the suture operation.
(Embodiment 2)

本発明の実施形態2に係る低侵襲巾着縫合デバイス1Aは、操作部4Aの顎開閉駆動機構及び顎部屈曲駆動機構の構成が、図17に示すように、前記実施形態1の巾着縫合デバイス1における操作部4の顎開閉駆動機構及び顎部屈曲駆動機構の構成とは、自動操作化するために一部変更される相異点を除いて、その他の構成は前記実施形態1の低侵襲巾着縫合デバイス1と同様である。   The minimally invasive purse string suturing device 1A according to the second embodiment of the present invention has the configuration of the jaw opening / closing drive mechanism and the jaw bending drive mechanism of the operation unit 4A as shown in FIG. The configuration of the jaw opening / closing drive mechanism and the jaw flexion drive mechanism of the operation unit 4 in FIG. 3 is the minimally invasive purse according to the first embodiment except for the differences that are partly changed for automatic operation. Similar to the suturing device 1.

したがって、図17において、前記実施形態1と同じ機能・構成を有する部材には、一部形状が異なっていても説明を簡明化するため図1〜16の構成部材と同一の符号を付し(あるいは実施形態1と同一の符号にAを付記し)、実施形態1の操作部4の顎開閉駆動機構及び顎部屈曲駆動機構以外の操作部4、挿入管部2、顎部3と全く同様の機能・構成を有するので、これらの詳細な説明は省略する。   Therefore, in FIG. 17, members having the same functions and configurations as those of the first embodiment are denoted by the same reference numerals as those of FIGS. 1 to 16 in order to simplify the description even if the shapes are partially different ( Alternatively, A is added to the same reference numeral as in the first embodiment), and the operation portion 4 other than the jaw opening / closing drive mechanism and the jaw bending drive mechanism of the operation portion 4 of the first embodiment, the insertion tube portion 2, and the jaw portion 3 are exactly the same. Therefore, the detailed description thereof will be omitted.

実施形態2の顎開閉駆動機構は、環状把手部2bに突設された取付金具2Afに本体81が固設され、ロッド82先端部が顎開閉操作ノブ8のフランジ状把手部8c後端面に連結され、顎開閉操作ノブ8を開閉操作ロッド7と共にX軸方向に前進又は後退させることにより、自動的にいずれも図示しない第2顎を第1顎に対して閉じ又は開き動作を行なう電動マイクロリニアアクチュエータ80を備えている。   In the jaw opening / closing drive mechanism of the second embodiment, the main body 81 is fixed to the mounting bracket 2Af protruding from the annular handle portion 2b, and the tip of the rod 82 is connected to the rear end face of the flange-like handle portion 8c of the jaw opening / closing operation knob 8. Then, by moving the jaw opening / closing operation knob 8 together with the opening / closing operation rod 7 forward or backward in the X-axis direction, the electric micro linear which automatically closes or opens the second jaw (not shown) with respect to the first jaw. An actuator 80 is provided.

電動マイクロリニアアクチュエータ80は、ボールねじなどの螺旋機構を減速機付小型モータで駆動しロッド82を軸方向に移動させる、例えば「ロボシリンダー」などの商品名で市販されている公知の小型電動シリンダー等を適用することができる。   The electric micro linear actuator 80 is a known small electric cylinder that is marketed under a trade name such as “ROBO Cylinder” in which a helical mechanism such as a ball screw is driven by a small motor with a reduction gear to move the rod 82 in the axial direction. Etc. can be applied.

また、実施形態2の顎部屈曲駆動機構は、把手部材42の連結部42aに設けられた取付金具42dに本体46が固着され、雄螺旋軸44aの後端部に回転軸47が連結され、雄螺旋軸44aを正逆回転させてX軸方向への螺進又は螺退動作で連結部42aに連結された一対の屈曲操作部材41を挿入管部2のX軸方向に移動させて図示しない顎部の角度変更(屈曲)動作を行なう減速機付小型電動モータ45を備えている。
(実施形態3)
Further, in the jaw bending drive mechanism of the second embodiment, the main body 46 is fixed to the mounting bracket 42d provided on the connecting portion 42a of the handle member 42, and the rotary shaft 47 is connected to the rear end portion of the male spiral shaft 44a. A pair of bending operation members 41 connected to the connecting portion 42a are moved in the X-axis direction of the insertion tube portion 2 by rotating the male spiral shaft 44a forward and backward and screwing or retreating in the X-axis direction. A small electric motor 45 with a speed reducer is provided for changing the angle of the jaw (bending).
(Embodiment 3)

本発明の実施形態3に係る低侵襲巾着縫合デバイス1Bは、操作部4Bの顎開閉駆動機構及び顎部屈曲駆動機構の構成が、図18(a)〜(c)、図19及び図20に示すように、前記実施形態1の低侵襲巾着縫合デバイス1における操作部4の顎開閉駆動機構及び顎部屈曲駆動機構の構成とは、スマート化するために一部変更される相異点を除いて、その他の構成は前記実施形態1の低侵襲巾着縫合デバイス1と同様である。   In the minimally invasive purse string suturing device 1B according to Embodiment 3 of the present invention, the configurations of the jaw opening / closing drive mechanism and the jaw bending drive mechanism of the operation unit 4B are shown in FIGS. 18 (a) to 18 (c), 19 and 20. As shown, the configuration of the jaw opening / closing drive mechanism and the jaw flexion drive mechanism of the operation unit 4 in the minimally invasive purse string suturing device 1 of the first embodiment except for differences that are partially changed to make smart. Other configurations are the same as those of the minimally invasive purse string suturing device 1 of the first embodiment.

したがって、図18(a)〜(c)、図19及び図20において、前記実施形態1と同じ機能・構成を有する部材には、一部形状が異なっていても説明を簡明化するため図1〜16の構成部材と同一の符号を付し(あるいは実施形態1と同一の符号にBを付記し)、実施形態1の操作部4の顎開閉駆動機構及び顎部屈曲駆動機構以外の操作部4、挿入管部2、顎部3と全く同様の機能・構成を有するので、これらの詳細な説明は省略する。   Accordingly, in FIGS. 18A to 18C, 19, and 20, the members having the same functions and configurations as those of the first embodiment are illustrated in FIG. The same reference numerals as those of the components 16 to 16 (or B is added to the same reference numerals as those in the first embodiment), and the operation parts other than the jaw opening / closing drive mechanism and the jaw bending drive mechanism of the operation part 4 in the first embodiment. 4, since it has the completely same function and composition as insertion tube part 2 and jaw part 3, these detailed explanation is omitted.

実施形態3の顎開閉駆動機構は、挿入管部2Bの後端部に連結する環状把手部2Bbの後端部2BdにX軸周りの回転が拘束されてX軸方向移動可能に配置され、開閉操作ロッド7Bの後端部7Bbに連結され、且つ、外周面に雄螺旋8Bdが螺刻された環状雄螺旋部材8Bcと、雄螺旋8Bdに螺合する雌螺旋が螺刻された螺旋孔8Bbを有し、環状把手部2Bbの後端部2Bdに止めねじ8Bgを介して外嵌合し固着されたストッパ8BfによりX軸方向移動が拘束されてX軸周りに回転可能に設けられ、正逆回転することにより環状雄螺旋部材8Bcを開閉操作ロッド7Bと共にX軸方向に螺進又は螺退させ、いずれも図示しない第2顎を第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる手動操作式回転駆動手段の顎開閉操作手段である顎開閉操作ノブ8Bと、を備えている。   The jaw opening / closing drive mechanism of the third embodiment is arranged to be movable in the X-axis direction by restricting the rotation around the X-axis to the rear end 2Bd of the annular handle 2Bb connected to the rear end of the insertion tube 2B. An annular male spiral member 8Bc connected to the rear end 7Bb of the operating rod 7B and having a male spiral 8Bd threaded on the outer peripheral surface thereof, and a spiral hole 8Bb threaded with a female spiral threadedly engaged with the male spiral 8Bd. It has a stopper 8Bf that is externally fitted and fixed to the rear end 2Bd of the annular handle portion 2Bb via a set screw 8Bg, and is provided so as to be able to rotate around the X axis and to rotate around the X axis. As a result, the annular male spiral member 8Bc is screwed or screwed in the X-axis direction together with the opening / closing operation rod 7B, and the second jaw (not shown) is closed in the first jaw side or opened in the opposite first jaw side. Jaw opening of manually operated rotational drive means to rotate in the direction A jaw opening and closing operation knob 8B is an operation unit, and a.

環状雄螺旋部材8Bcの後端面には、環状雄螺旋部材8Bcより拡径されたストッパ7Bcが止めねじ7Bdを介して固着されている。ストッパ7Bcは、顎開閉操作ノブ8BのX軸後方への抜け止め機能も有している。   A stopper 7Bc having a diameter larger than that of the annular male spiral member 8Bc is fixed to the rear end surface of the annular male spiral member 8Bc via a set screw 7Bd. The stopper 7Bc also has a function of preventing the jaw opening / closing operation knob 8B from coming off backward in the X axis.

また、実施形態3の顎部屈曲駆動機構は、挿入管部2Bの後端部2Bb近傍の環状把手部2BbにX軸周りの回転が拘束されてX軸方向移動可能に設けられ、一対の屈曲操作部材41の後端部に止めねじ44Beを介して連結され、且つ、外周面に雄螺旋44Bdが螺刻された環状雄螺旋部材44Bcと、環状雄螺旋部材44Bcに螺合する雌螺旋が螺刻された螺旋孔44Bbを有し、環状把手部2Bbに停めねじ44Bg、44Biを介してそれぞれ外嵌合し固着されたストッパ44Bf、44BhによりX軸方向移動が拘束されてX軸周りに回転可能に設けられており、正逆回転することにより環状雄螺旋部材44BcをX軸方向に螺進又は螺退させることで屈曲操作部材41をX軸方向前進又は後退させて図示しない顎部の屈曲角度変更動作を行なう手動操作式回転駆動手段の屈曲角度操作手段44Bと、を備えている。   Further, the jaw bending drive mechanism of the third embodiment is provided in the annular handle 2Bb in the vicinity of the rear end 2Bb of the insertion tube 2B so as to be able to move in the X-axis direction while being restricted from rotating around the X-axis. An annular male spiral member 44Bc connected to the rear end portion of the operation member 41 via a set screw 44Be and having a male spiral 44Bd threaded on the outer peripheral surface thereof, and a female spiral screwed into the annular male spiral member 44Bc are screwed. It has an engraved spiral hole 44Bb, and its movement in the X-axis direction is constrained by stoppers 44Bf and 44Bh that are externally fitted and fixed to the annular handle portion 2Bb via stop screws 44Bg and 44Bi, respectively, and can be rotated around the X-axis. The bending operation member 41 is advanced or retracted in the X-axis direction by rotating or reciprocating the annular male spiral member 44Bc in the X-axis direction by forward and reverse rotation, and the bending angle of the jaw portion (not shown) Strange It includes a bending angle operation means 44B of the manually operated rotary drive means for operating, the.

屈曲角度操作手段44Bは、指で握り易い複数の突起部44Baが形成されている。   The bending angle operation means 44B is formed with a plurality of protrusions 44Ba that are easy to grip with a finger.

実施形態3の環状把手部2Bbは、図18(a)〜(c)、図19に示すように、スリット2Beがストッパ44Bfの前端部から環状把手部2Bbの後端部2BdまでX軸に沿って形成されており、スリット2Be内に、一対の第1、第2縫合針11a、11bの後端部が止めねじ11dを介して連結する、縫合操作部11cがX軸方向移動可能に設けられている。この場合、縫合操作部11cは後端面がストッパ8Bfの先端面に当接するまでX軸後方向への後退移動が可能である。屈曲角度操作手段44Bの環状雄螺旋部材44Bc及び顎開閉操作手段(顎開閉操作ノブ)8Bの環状雄螺旋部材8BcがX軸方向に移動する区間近傍部位のスリット2Beは、それぞれY軸方向に貫通し形成されている。   As shown in FIGS. 18 (a) to 18 (c) and FIG. 19, the annular handle portion 2Bb of Embodiment 3 has a slit 2Be along the X axis from the front end portion of the stopper 44Bf to the rear end portion 2Bd of the annular handle portion 2Bb. In the slit 2Be, a suturing operation portion 11c in which the rear end portions of the pair of first and second suturing needles 11a and 11b are connected via a set screw 11d is provided to be movable in the X-axis direction. ing. In this case, the suturing operation portion 11c can be moved backward in the X-axis rear direction until the rear end surface comes into contact with the front end surface of the stopper 8Bf. The slits 2Be in the vicinity of the section where the annular male spiral member 44Bc of the bending angle operation means 44B and the annular male spiral member 8Bc of the jaw opening / closing operation means (jaw opening / closing operation knob) 8B move in the X-axis direction respectively penetrate in the Y-axis direction. Is formed.

一対の縫い針11a、11bは、図26(a)〜(d)に示すように、尖鋭状先端部11a1、11b1に連結する後方部が例えばSUS製ワイヤなどの可撓性部材又はニッケルチタン合金などの超弾性合金からなり、それぞれ例えばSUS製などの薄肉細径カバーパイプ14内にX軸方向移動可能に収容されており、カバーパイプ14の後端部が止めねじ11eを介して縫い針操作部11cに連結されている。すなわち、一対の第1、第2縫合針11a、11b、縫合糸12(図15、図26(d)参照)、一対のカバーパイプ14及び縫合操作部11cから縫合針カートリッジ11が構成される。   As shown in FIGS. 26 (a) to (d), the pair of sewing needles 11a and 11b has a rear portion connected to the sharp tip portions 11a1 and 11b1, for example, a flexible member such as a SUS wire or a nickel titanium alloy. Each of which is housed in a thin and thin cover pipe 14 made of, for example, SUS so as to be movable in the X-axis direction, and the rear end of the cover pipe 14 is operated by a sewing needle via a set screw 11e. It is connected to the part 11c. That is, the suture needle cartridge 11 is composed of the pair of first and second suture needles 11a and 11b, the suture thread 12 (see FIGS. 15 and 26D), the pair of cover pipes 14 and the suture operation portion 11c.

縫合針カートリッジ11は、図18(b)、図19に示すように、挿入管部2B内に設けられた一対の貫通孔2c内にX軸方向移動可能に挿通されたチューブ状の屈曲操作部材41内にX軸方向移動可能に挿通される。また、縫合糸12は、挿入管部2B内に設けられた縫合糸挿通孔2g内に挿通される。   As shown in FIGS. 18B and 19, the suture needle cartridge 11 is a tube-shaped bending operation member that is inserted into a pair of through holes 2c provided in the insertion tube portion 2B so as to be movable in the X-axis direction. 41 is inserted so as to be movable in the X-axis direction. Further, the suture thread 12 is inserted into a suture thread insertion hole 2g provided in the insertion tube portion 2B.

貫通孔2c、縫合糸挿通孔2g及び縫合針カートリッジ11の構成は、上記実施形態1、2に係る低侵襲巾着縫合デバイス1、1Aにおいても同様である。   The configurations of the through hole 2c, the suture thread insertion hole 2g, and the suture needle cartridge 11 are the same in the minimally invasive purse string suture devices 1 and 1A according to the first and second embodiments.

また、チューブ状屈曲操作部材41後端部内に縫合針カートリッジ11の一対の縫合針11a、11b先端部を挿入する際に、図27(a)、(b)に示すように、一対の縫合針11a、11bが挿通される一対のチューブ状屈曲操作部材41後端部に対応する位置にX軸方向に沿って穿設され、縫合針11a、11bがそれぞれ嵌入可能な一対のスリット溝81b及びスリット溝81bに連設し図示Y軸上方向に拡がるテーパ面81aからなる開口ガイド溝81と、開口ガイド溝81の外面の図示Y軸下半部が環状把手部2Bbのスリット2Be内に一時的に着脱可能に嵌合する予備装着部82と、を有する縫合針カートリッジセッティング治具80が好適に適用される。   Further, when the distal ends of the pair of suture needles 11a and 11b of the suture needle cartridge 11 are inserted into the rear end portion of the tubular bending operation member 41, a pair of suture needles as shown in FIGS. A pair of slit grooves 81b and slits which are drilled along the X-axis direction at positions corresponding to the rear end portions of the pair of tubular bending operation members 41 through which 11a and 11b are inserted and into which the suture needles 11a and 11b can be respectively inserted. An opening guide groove 81 formed of a tapered surface 81a that is continuous with the groove 81b and expands in the Y-axis upward direction in the figure, and the Y-axis lower half part on the outer surface of the opening guide groove 81 is temporarily in the slit 2Be of the annular handle part 2Bb. A suture needle cartridge setting jig 80 having a pre-mounting portion 82 that is detachably fitted is preferably applied.

この縫合針カートリッジセッティング治具80を環状把手部2Bbのスリット2Be内に予備装着部82を嵌合し一時的に装着して用いることにより、細いチューブ状屈曲操作部材41後端部に対してスリット溝81bにより位置合せされた一対の縫合針11a、11b先端部を屈曲操作部材41内に容易に挿入することができ、縫合針カートリッジ11の環状把手部2Bbへのセッティングが容易化する。縫合針カートリッジ11の環状把手部2Bbへのセッティングの後には、縫合針カートリッジセッティング治具80は環状把手部2Bbのスリット2Be内から取り外される。   The suture needle cartridge setting jig 80 is used by fitting the preliminary attachment portion 82 into the slit 2Be of the annular handle portion 2Bb and temporarily attaching it to the rear end portion of the thin tubular bending operation member 41. The distal ends of the pair of suture needles 11a and 11b aligned by the groove 81b can be easily inserted into the bending operation member 41, and the setting of the suture needle cartridge 11 to the annular handle portion 2Bb is facilitated. After setting the suture needle cartridge 11 to the annular handle portion 2Bb, the suture needle cartridge setting jig 80 is removed from the slit 2Be of the annular handle portion 2Bb.

また、環状雄螺旋部材8Bcは、図18(c)に示すように、軸対称に外面が2ヶ所カットされて環状把手部2Bbのスリット2Be内に摺動可能に嵌合するガイド面8Bhが形成されており、これによりX軸周りの回転が拘束されてX軸方向移動可能に構成されている。   Further, as shown in FIG. 18C, the annular male spiral member 8Bc is formed with a guide surface 8Bh that is slidably fitted into the slit 2Be of the annular handle portion 2Bb by being cut off at two axially symmetrical outer surfaces. Thus, the rotation around the X axis is constrained to be movable in the X axis direction.

環状雄螺旋部材44Bcも、図18(b)に示すように、環状雄螺旋部材8Bcと同様に、軸対称に外面が2ヶ所カットされてスリット2Be内に摺動可能に嵌合するガイド面44Bjが形成されており、これによりX軸周りの回転が拘束されてX軸方向移動可能に構成されている。
(実施形態4)
As shown in FIG. 18 (b), the annular male spiral member 44Bc also has a guide surface 44Bj that is slidably fitted into the slit 2Be after the outer surface is cut at two axially symmetrical positions, similarly to the annular male spiral member 8Bc. Thus, the rotation around the X axis is constrained and the X axis direction is movable.
(Embodiment 4)

本発明の実施形態4に係る低侵襲巾着縫合デバイス1Cは、操作部4Cの顎開閉駆動機構及び顎部屈曲駆動機構の構成が、図21に示すように、前記実施形態3の巾着縫合デバイス1Bにおける操作部4Bの顎開閉駆動機構及び顎部屈曲駆動機構の構成とは、自動操作化するために一部変更される相異点を除いて、その他の構成は前記実施形態3の低侵襲巾着縫合デバイス1Bと同様である。   In the minimally invasive purse string suturing device 1C according to the fourth embodiment of the present invention, the configuration of the jaw opening / closing driving mechanism and the jaw bending driving mechanism of the operation unit 4C is as shown in FIG. The configuration of the jaw opening / closing drive mechanism and the jaw flexion drive mechanism of the operation unit 4B in FIG. 4 is the same as that of the third embodiment except for the differences that are partly changed for automatic operation. It is the same as the suturing device 1B.

したがって、図21において、前記実施形態3と同じ機能・構成を有する部材には、一部形状が異なっていても説明を簡明化するため図18(a)〜(c)及び図19の構成部材と同一の符号を付し(あるいは実施形態3と同一の符号にBに替えてCを付記し)、実施形態3の操作部4Bの顎開閉駆動機構及び顎部屈曲駆動機構以外の操作部4B、挿入管部2B、顎部3Bと全く同様の機能・構成を有するので、これらの詳細な説明は省略する。   Accordingly, in FIG. 21, the members having the same functions and configurations as those of the third embodiment are shown in FIGS. 18A to 18C and FIG. 19 in order to simplify the explanation even if the shapes are partially different. (Or the same reference numeral as in the third embodiment, C instead of B), and the operation unit 4B other than the jaw opening / closing drive mechanism and the jaw bending drive mechanism of the operation unit 4B of the third embodiment. Since the insertion tube portion 2B and the jaw portion 3B have exactly the same functions and configurations, detailed descriptions thereof will be omitted.

実施形態4の顎開閉駆動機構は、環状把手部2Bbの後端部2BdにX軸周りの回転が拘束されてX軸方向移動可能に設けられ、開閉操作ロッド7Bの後端部7Bbに止めねじ8Beを介して連結された環状操作ロッド駆動部材8Ccと、環状把手部2Bbの後端部2Bdに突設された取付金具2Ceに本体8Caが固着され、ロッド8Cb先端部が環状操作ロッド駆動部材8Ccの外面に突設された取付金具8Cdに連結されて環状操作ロッド駆動部材8Ccを開閉操作ロッド7Bと共にX軸方向前進又は後退させることより図示しない第2顎を第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる自動操作式の顎開閉操作手段である電動マイクロリニアアクチュエータ8Cと、を備えている。   The jaw opening / closing drive mechanism of the fourth embodiment is provided at the rear end portion 2Bd of the annular handle portion 2Bb so that the rotation around the X axis is constrained to be movable in the X axis direction, and the set screw at the rear end portion 7Bb of the opening / closing operation rod 7B. The main body 8Ca is fixed to the annular operating rod drive member 8Cc connected via 8Be and the mounting bracket 2Ce projecting from the rear end 2Bd of the annular handle 2Bb, and the tip of the rod 8Cb is annular control rod drive member 8Cc. The second jaw (not shown) is closed in the direction toward the first jaw by moving the annular operating rod drive member 8Cc together with the opening / closing operation rod 7B in the X-axis direction by being connected to the mounting bracket 8Cd protruding from the outer surface of the first jaw. And an electric micro linear actuator 8C which is an automatically operated jaw opening / closing operation means for rotating in the opening direction toward the first jaw side.

また、実施形態4の顎部屈曲駆動機構は、挿入管部2Bの後端部近傍の環状把手部2BbにX軸周りの回転が拘束されてX軸方向移動可能に設けられ、一対の屈曲操作部材41の後端部に止めねじ44Beを介して連結された環状屈曲操作部材駆動部材44Ccと、環状屈曲操作部材駆動部材44Cc近傍の把手部2Bbに突設された取付金具2Cfに本体44Caが固着され、ロッド44Cb先端部が環状操作ロッド駆動部材44Ccの外面に突設された取付金具44Cdに連結されて環状屈曲操作部材駆動部材44CcをX軸方向に螺進又は螺退させることで屈曲操作部材41をX軸方向前進又は後退させて図示しない顎部の屈曲角度変更動作を行なう自動操作式屈曲角度操作手段である電動マイクロリニアアクチュエータ44Cと、を備えている。   Further, the jaw bending drive mechanism of the fourth embodiment is provided in the annular handle portion 2Bb in the vicinity of the rear end portion of the insertion tube portion 2B so that the rotation around the X axis is constrained so as to be movable in the X axis direction. The main body 44Ca is fixed to the annular bending operation member driving member 44Cc connected to the rear end portion of the member 41 via a set screw 44Be, and the mounting bracket 2Cf protruding from the handle portion 2Bb in the vicinity of the annular bending operation member driving member 44Cc. The end of the rod 44Cb is connected to a mounting bracket 44Cd protruding from the outer surface of the annular operation rod drive member 44Cc, and the bending operation member 44Cc is screwed or retracted in the X-axis direction. An electric micro linear actuator 44C, which is an automatically operated bending angle operating means for performing a bending angle changing operation of a jaw portion (not shown) by moving 41 forward or backward in the X-axis direction; Eteiru.

また、環状操作ロッド駆動部材8Cc及び環状屈曲操作部材駆動部材44Ccは、それぞれ軸対称に外面が2ヶ所カットされてスリット2Be内に摺動可能に嵌合するガイド面8Ch、44Cjが形成されており、これにより両者8Cc、44CcはX軸周りの回転が拘束されてX軸方向移動可能に構成されている。
(実施形態5)
Further, the annular operation rod drive member 8Cc and the annular bending operation member drive member 44Cc are each provided with guide surfaces 8Ch and 44Cj that are slidably fitted into the slit 2Be by being cut at two outer surfaces in axial symmetry. Thus, both the 8Cc and 44Cc are configured to be movable in the X-axis direction with the rotation around the X-axis restricted.
(Embodiment 5)

本発明の実施形態5に係る低侵襲巾着縫合デバイス1Dは、顎部3Dの顎開閉駆動機構の顎開閉ガイド機構の構成が、図22(a)、(b)に示すように、前記実施形態1の低侵襲巾着縫合デバイス1における顎部3の顎開閉ガイド機構の構成とは一部変更される相異点を除いて、その他の構成は前記実施形態1の低侵襲巾着縫合デバイス1と同様である。   In the minimally invasive purse string suture device 1D according to Embodiment 5 of the present invention, the configuration of the jaw opening / closing guide mechanism of the jaw opening / closing drive mechanism of the jaw 3D is as shown in FIGS. 22 (a) and 22 (b). Other configurations are the same as those of the minimally invasive purse string suturing device 1 of the first embodiment except for the differences that are partly changed from the configuration of the jaw opening / closing guide mechanism of the jaw 3 in the minimally invasive purse string suturing device 1 of FIG. It is.

したがって、図22(a)、(b)において、前記実施形態1と同じ機能・構成を有する部材には、一部形状が異なっていても説明を簡明化するため図9(a)、(b)及び図11の構成部材と同一の符号を付し(あるいは実施形態1と同一の符号にDを付記し)、実施形態1の顎開閉ガイド機構以外の顎部3、操作部4、挿入管部2と全く同様の機能・構成を有するので、これらの詳細な説明は省略する。   Therefore, in FIGS. 22A and 22B, the members having the same functions and configurations as those of the first embodiment are shown in FIGS. ) And the same reference numerals as those in FIG. 11 (or D is added to the same reference numerals as in the first embodiment), and the jaw section 3, the operation section 4, and the insertion tube other than the jaw opening / closing guide mechanism in the first embodiment. Since it has exactly the same function and configuration as the unit 2, detailed description thereof will be omitted.

実施形態5の顎開閉ガイド機構は、第1顎5と第2顎6Dの間に設けられ、両者が離間して傾斜し開き姿勢に保持する第1コイルバネ(付勢部材)13と、第2顎6Dの縫合操作部6aの支持片6Dcの第1顎5の支持片5cに対向する側面の後端部に形成されたガイド面6Ddと、を有している。   The jaw opening / closing guide mechanism of the fifth embodiment is provided between the first jaw 5 and the second jaw 6D, the first coil spring (biasing member) 13 that is inclined and held in an open posture, and the second jaw A guide surface 6Dd formed at the rear end of the side surface of the support piece 6Dc of the jaw 6D facing the support piece 5c of the first jaw 5 of the support piece 6Dc.

そして、顎部3DのX軸に対する任意の屈曲角度において、開閉操作ロッド7DのX軸方向前進動作により板状部71Dの先端角部が第2顎6の支持片6Dc後端のガイド面6Ddに摺接してガイド面6Ddが次第に押圧されることで第2顎6Dを第1コイルバネ13の付勢力に抗して第1顎5側への閉じ方向に回動させる。   Then, at an arbitrary bending angle with respect to the X axis of the jaw portion 3D, the tip corner portion of the plate-like portion 71D is brought into contact with the guide surface 6Dd at the rear end of the support piece 6Dc of the second jaw 6 by the forward movement of the opening / closing operation rod 7D. The second jaw 6D is rotated in the closing direction toward the first jaw 5 against the urging force of the first coil spring 13 by the sliding contact and the guide surface 6Dd being gradually pressed.

一方、当該閉じ状態で、開閉操作ロッド7DのX軸方向後退動作により板状部71Dの先端角部が第2顎6Dの支持片6Dc後端のガイド面6Ddに対する押圧が解除されることで第2顎6Dを第1コイルバネ13の復元力で反第1顎5側への開き方向に回動させるように構成されている。   On the other hand, when the opening / closing operation rod 7D is retracted in the X-axis direction, the tip corner of the plate-like portion 71D is released from the pressure on the guide surface 6Dd at the rear end of the support piece 6Dc of the second jaw 6D. The two jaws 6D are configured to be rotated in the opening direction toward the first jaw 5 side by the restoring force of the first coil spring 13.

また、ガイド面6Ddは、この実施形態の図21(a)に示すような略平面状に替えて、図22(b)に示すような曲面状に形成してもよい。   Further, the guide surface 6Dd may be formed in a curved surface shape as shown in FIG. 22B instead of the substantially flat shape as shown in FIG. 21A of this embodiment.

なお、実施形態5のガイド面6Ddの開閉操作ロッド7DのX軸方向前進動作(顎部3D閉じ動作)時において、板状部71Dの先端角部が当接するガイド面6Ddの先端部6Deと第2顎6Dの開閉時回動中心となる第2支軸h2の中心との間の距離が、前記実施形態1の支持片6c後端角部が当接するガイド面71aの後端部71cと第2支軸h2の中心との間の距離より短くなるので、その分、第2顎6Dを第1コイルバネ13の付勢力に抗して第1顎5側へと回動させための駆動力が増大する。この点では、前記実施形態1の顎開閉ガイド機構の方が、実施形態3の顎開閉ガイド機構より勝ると言える。
(実施形態6)
It should be noted that, in the fifth embodiment, when the opening / closing operation rod 7D of the guide surface 6Dd is moved forward in the X-axis direction (jaw portion 3D closing operation), the tip portion 6De of the guide surface 6Dd with which the tip corner portion of the plate-like portion 71D abuts The distance between the center of the second support shaft h2 that is the rotation center when the two jaws 6D are opened and closed is the distance between the rear end 71c of the guide surface 71a with which the rear end corner of the support piece 6c of the first embodiment contacts and the second end 6c. Since the distance from the center of the two support shafts h2 is shorter, the driving force for rotating the second jaw 6D toward the first jaw 5 against the biasing force of the first coil spring 13 is correspondingly reduced. Increase. In this respect, it can be said that the jaw opening / closing guide mechanism of the first embodiment is superior to the jaw opening / closing guide mechanism of the third embodiment.
(Embodiment 6)

本発明の実施形態6に係る低侵襲巾着縫合デバイス1Eは、操作部4Eの顎開閉駆動機構の構成が、図23に示すように、前記実施形態3の巾着縫合デバイス1Bにおける操作部4Bの顎開閉駆動機構の構成とは、一部変更される相異点を除いて、その他の構成は前記実施形態3の低侵襲巾着縫合デバイス1Bと同様である。   In a minimally invasive purse string suturing device 1E according to Embodiment 6 of the present invention, as shown in FIG. 23, the jaw opening / closing drive mechanism of the operation unit 4E has a jaw of the operation unit 4B in the purse string suturing device 1B according to the third embodiment. The configuration of the opening / closing drive mechanism is the same as that of the minimally invasive purse string suturing device 1B of the third embodiment, except for some differences.

したがって、図23において、前記実施形態3と同じ機能・構成を有する部材には、一部形状が異なっていても説明を簡明化するため図18(a)〜(c)及び図19の構成部材と同一の符号を付し(あるいは実施形態3と同一の符号にBに替えてCを付記し)、実施形態3の操作部4Bの顎開閉駆動機構以外の操作部4B、挿入管部2B、顎部3Bと全く同様の機能・構成を有するので、これらの詳細な説明は省略する。   Therefore, in FIG. 23, the members having the same functions and configurations as those of the third embodiment are shown in FIGS. 18A to 18C and FIG. 19 in order to simplify the explanation even if the shapes are partially different. (Or the same reference numeral as in the third embodiment, C is appended instead of B), and the operation section 4B other than the jaw opening / closing drive mechanism of the operation section 4B in the third embodiment, the insertion tube section 2B, Since it has exactly the same function and configuration as the jaw 3B, a detailed description thereof will be omitted.

実施形態6の顎開閉駆動機構は、図23に示すように、図示しない挿入管部の後端部に連結する環状把手部の後端部2Ebから図示Z軸下方部に設けられた把持ハンドル2Eaを有する固定ハンドル構造2Edと、固定ハンドル構造2Edの後端部に支持ピン8Epによりピボット連結され、開閉操作ロッド7Eの後端部7Ebと連携して図示しない顎部を開閉させる、可動把持ハンドル8Eaを有する手動操作式の顎開閉操作手段である顎開閉操作ハンドル8Eと、を備えている。   As shown in FIG. 23, the jaw opening / closing drive mechanism of the sixth embodiment includes a grip handle 2Ea provided at the lower part of the Z-axis from the rear end part 2Eb of the annular handle part connected to the rear end part of the insertion pipe part (not shown). And a movable grip handle 8Ea that is pivotally connected to a rear end portion of the fixed handle structure 2Ed by a support pin 8Ep and opens and closes a jaw portion (not shown) in cooperation with the rear end portion 7Eb of the open / close operation rod 7E. And a jaw opening / closing operation handle 8E which is a manually operated jaw opening / closing operation means.

顎開閉操作ハンドル8Eの操作に伴い、開閉操作ロッド7EをX軸方向に前進又は後退させることができる。   With the operation of the jaw opening / closing operation handle 8E, the opening / closing operation rod 7E can be moved forward or backward in the X-axis direction.

この実施形態においては、開閉操作ロッド7Eは、図23に示すように、後端部7Ebに顎開閉操作ハンドル8Eがピボット連結される支持ピンEpの図示Z軸上方に離隔してX軸上に形成された凹溝8Eb内に滑動自在に嵌合する球状体7Ecを備え、固定ハンドル構造2Edの上端部に連結する環状把手部の後端部2EbにX軸に沿って形成されたガイド孔2Ef内をスライド可能に挿通されている。   In this embodiment, as shown in FIG. 23, the open / close operation rod 7E is spaced above the Z axis of the support pin Ep to which the jaw opening / closing operation handle 8E is pivotally connected to the rear end portion 7Eb, and on the X axis. A guide hole 2Ef formed along the X axis in the rear end portion 2Eb of the annular handle portion having a spherical body 7Ec slidably fitted in the formed groove 8Eb and connected to the upper end portion of the fixed handle structure 2Ed. The inside is slidably inserted.

そして、顎開閉操作ハンドル8Eを固定ハンドル構造2Edの把持ハンドル2Ea方向(図示実線矢印方向)への閉操作又はこれと反対方向(図示破線矢印方向)の開操作に伴って、開閉操作ロッド7EをX軸方向に後退又は前進させ、図示しない第2顎の開き又は閉じ動作を行なう。   Then, the opening / closing operation rod 7E is moved by closing the jaw opening / closing operation handle 8E in the direction of the grip handle 2Ea of the fixed handle structure 2Ed (in the direction of the solid line arrow in the figure) or in the opposite direction (in the direction of the broken line arrow in the figure). Retract or advance in the X-axis direction to open or close the second jaw (not shown).

顎開閉操作ハンドル8E、固定ハンドル構造2Edの形状及び機構等は上記に限定されるものではなく、公知の各種内視鏡外科手術用鉗子等の操作部及び可動ハンドル、固定ハンドル構造の構成を選択的に適用することができる。
(実施形態7)
The shape and mechanism of the jaw opening / closing operation handle 8E and the fixed handle structure 2Ed are not limited to the above, and the configuration of the operation unit and movable handle of various known endoscopic surgical forceps and the fixed handle structure are selected. Can be applied.
(Embodiment 7)

本発明の実施形態7に係る低侵襲巾着縫合デバイス1Fは、顎部3の顎開閉駆動機構の構成が、図24(a)、(b)、図25(a)に示すように、前記実施形態1の低侵襲巾着縫合デバイス1の顎開閉駆動機構の構成とは一部変更される相異点を除いて、その他の構成は前記実施形態1、3の低侵襲巾着縫合デバイス1、1Bと同様である。   In the minimally invasive purse string suturing device 1F according to Embodiment 7 of the present invention, the configuration of the jaw opening / closing drive mechanism of the jaw 3 is as shown in FIGS. 24 (a), 24 (b), and 25 (a). Except for differences that are partly changed from the configuration of the jaw opening / closing drive mechanism of the minimally invasive purse string suturing device 1 according to the first embodiment, other configurations are the same as those of the minimally invasive purse string suturing devices 1 and 1B according to the first and third embodiments. It is the same.

したがって、図24(a)、(b)、図25(a)において、前記実施形態1、3と同じ機能・構成を有する部材には、一部形状が異なっていても説明を簡明化するため図1、2、図9(a)、(b)、図11あるいは図18(a)〜(c)及び図19の構成部材と同一の符号を付し(あるいは実施形態1、3と同一の符号に直接又はBに替えてFを付記し)、実施形態1、3の顎開閉駆動機構関連部以外の顎部3、操作部4、4B、挿入管部2、2Bと全く同様の機能・構成を有するので、これらの詳細な説明は省略する。   Therefore, in FIGS. 24A, 24B, and 25A, the members having the same functions and configurations as those of the first and third embodiments are simplified even if the shapes are partially different. 1, 2, 9 (a), 9 (b), FIG. 11 or FIGS. 18 (a) to (c) and the same reference numerals as those in FIG. Directly or F instead of B)) Exactly the same function as the jaw part 3, the operation parts 4, 4B, the insertion tube parts 2, 2B other than the parts related to the jaw opening / closing drive mechanism of the first and third embodiments. Since it has a configuration, a detailed description thereof will be omitted.

実施形態7の顎開閉駆動機構は、図24(a)、(b)に示すように、第1顎5と第2顎6の間に設けられ、両者が離間して傾斜し開き姿勢に保持する第1コイルバネ(付勢部材)13と、開閉操作ロッド7Fの先端部71FにX軸方向前方に延設され、第2顎6の支持片6c後端部の第1顎5の支持片5cに対向する側面に接触可能にX軸に対して偏心し配置された曲面71Fbが形成された任意断面例えば円柱状ガイド部材71Faを備える顎開閉ガイド機構と、を有している。   The jaw opening / closing drive mechanism of the seventh embodiment is provided between the first jaw 5 and the second jaw 6 as shown in FIGS. 24 (a) and 24 (b), and both are inclined and held in an open posture. A first coil spring (biasing member) 13 that extends to the front end portion 71F of the opening / closing operation rod 7F in the X-axis direction, and a support piece 5c of the first jaw 5 at the rear end portion of the support piece 6c of the second jaw 6. A jaw opening / closing guide mechanism having an arbitrary cross-section, for example, a cylindrical guide member 71Fa, on which a curved surface 71Fb is formed so as to be decentered with respect to the X-axis so as to be able to contact the side surface facing the X-axis.

この実施形態の顎開閉ガイド機構は、顎部3のX軸に対する任意の屈曲角度において、開閉操作ロッド7FのX軸回り一方向への回転動作によりガイド部材71Faのガイド部71Fbが第2顎6の支持片6c後端部の側面に摺接して当該側面が次第に押圧されることで第2顎6を第1コイルバネ13の付勢力に抗して第1顎5側への閉じ方向に回動させる。   In the jaw opening / closing guide mechanism of this embodiment, the guide portion 71Fb of the guide member 71Fa is moved to the second jaw 6 by rotating the opening / closing operation rod 7F in one direction around the X axis at an arbitrary bending angle with respect to the X axis. The second jaw 6 is rotated in the closing direction toward the first jaw 5 against the urging force of the first coil spring 13 by slidingly contacting the side surface of the rear end portion of the support piece 6c and gradually pressing the side surface. Let

一方、当該閉じ状態で、開閉操作ロッド7FのX軸回り相対的な一方向又は反対方向への所定角度例えばこの実施形態では略180°回転動作によりガイド部材71Faのガイド部71Fbが第2顎の支持片6c後端部の側面に対する押圧が解除されることで第2顎6を第1コイルバネ13の復元力で反第1顎5側への開き方向に回動させるように構成されている。   On the other hand, in the closed state, the guide portion 71Fb of the guide member 71Fa is rotated by a predetermined angle in a relative direction around the X-axis of the opening / closing operation rod 7F, for example, approximately 180 ° in this embodiment. By releasing the pressure on the side surface of the rear end portion of the support piece 6c, the second jaw 6 is rotated in the opening direction toward the anti-first jaw 5 side by the restoring force of the first coil spring 13.

また、ガイド部材71Faは、例えば図24(c)に示すようなおむすび形断面あるいは図示しない任意の多角形断面状に形成することができる。   Further, the guide member 71Fa can be formed, for example, in a rice ball shaped cross section as shown in FIG. 24C or an arbitrary polygonal cross section not shown.

この実施形態の操作部4Fにおける顎開閉駆動機構は、図25(b)に示すように、挿入管部2F(図24(a))の後端部に連結する環状把手部2Fbの後端部2FdまでX軸周りに回転可能に挿通される開閉操作ロッド7Fの後端部7Fdに連結されてX軸周りに回転可能に設けられ、正逆回転することにより開閉操作ロッド7FをX軸回りに回転させ、第2顎6を第1顎5側への閉じ方向又は反第1顎3側への開き方向に回動させる手動操作式回転駆動手段の顎開閉操作手段である顎開閉操作ノブ8Fを備えている。
(実施形態8)
As shown in FIG. 25B, the jaw opening / closing drive mechanism in the operation portion 4F of this embodiment is a rear end portion of an annular handle portion 2Fb connected to the rear end portion of the insertion tube portion 2F (FIG. 24A). It is connected to the rear end 7Fd of the opening / closing operation rod 7F that is rotatably inserted around the X axis up to 2Fd, and is provided so as to be rotatable around the X axis. By rotating forward and backward, the opening / closing operation rod 7F is rotated around the X axis. A jaw opening / closing operation knob 8F which is a jaw opening / closing operation means of a manually operated rotation driving means for rotating and rotating the second jaw 6 in the closing direction toward the first jaw 5 or in the opening direction opposite to the first jaw 3 side. It has.
(Embodiment 8)

本発明の実施形態8に係る低侵襲巾着縫合デバイス1Gは、操作部4Gにおける顎開閉駆動機構の構成が、図25(b)に示すように、前記実施形態8の低侵襲巾着縫合デバイス1Fの操作部4Fにおける顎開閉駆動機構の構成とは一部変更される相異点を除いて、その他の構成は前記実施形態7の低侵襲巾着縫合デバイス1Fと同様である。   In the minimally invasive purse string suturing device 1G according to the eighth embodiment of the present invention, as shown in FIG. 25 (b), the configuration of the jaw opening / closing drive mechanism in the operation unit 4G is the Except for differences that are partly changed from the configuration of the jaw opening / closing drive mechanism in the operation unit 4F, the other configurations are the same as those of the minimally invasive purse string suturing device 1F of the seventh embodiment.

したがって、図25(b)において、前記実施形態7と同じ機能・構成を有する部材には、一部形状が異なっていても説明を簡明化するため図25(a)の構成部材と同一の符号を付し(あるいは実施形態7と同一の符号にFに替えてGを付記し)、実施形態7の顎開閉駆動機構関連部以外の顎部3、操作部4F、挿入管部2Fと全く同様の機能・構成を有するので、これらの詳細な説明は省略する。   Therefore, in FIG. 25 (b), the same reference numerals as those in FIG. 25 (a) are used for the members having the same functions and configurations as those of the seventh embodiment even if the shapes are partially different. (Or G is added to the same reference numeral as in the seventh embodiment), and is exactly the same as the jaw section 3, the operation section 4F, and the insertion tube section 2F other than the jaw opening / closing drive mechanism related section in the seventh embodiment. Therefore, the detailed description thereof will be omitted.

実施形態8の操作部4Gにおける顎開閉駆動機構は、図25(b)に示すように、挿入管部2Fの後端部に連結する環状把手部2Fbの後端部2Fdに設けられた取付金具2Geに本体8Gaの先端フランジ8Gbが固着され、環状把手部2Fbの後端部2FdまでX軸周りに回転可能に挿通される開閉操作ロッド7Fの後端部7Fdに回転軸の先端部8Gcが連結され、正逆回転することにより開閉操作ロッド7FをX軸回りに回転させ、第2顎6を第1顎5(図24(a))側への閉じ方向又は反第1顎3側への開き方向に回動させる自動操作式回転駆動手段の顎開閉操作手段である減速機付小型電動モータ8Gを備えている。
(実施形態9)
As shown in FIG. 25 (b), the jaw opening / closing drive mechanism in the operation portion 4G of the eighth embodiment is a mounting bracket provided on the rear end portion 2Fd of the annular handle portion 2Fb connected to the rear end portion of the insertion tube portion 2F. The front end 8Gc of the rotating shaft is connected to the rear end 7Fd of the opening / closing operation rod 7F that is rotatably inserted around the X axis up to the rear end 2Fd of the annular handle portion 2Fb. Then, the forward / reverse rotation rotates the opening / closing operation rod 7F around the X axis, and the second jaw 6 is closed in the first jaw 5 (FIG. 24 (a)) side or in the direction opposite to the first jaw 3 side. A small electric motor 8G with a speed reducer is provided which is a jaw opening / closing operation means of an automatic operation rotation drive means for rotating in the opening direction.
(Embodiment 9)

本発明の実施形態9に係る低侵襲巾着縫合デバイス1Hは、挿入管部2H及び巾着縫合機構の構成が、図28(a)、(b)に示すように、前記実施形態3の低侵襲巾着縫合デバイス1Bの挿入管部2B及び巾着縫合機構の構成とは一部変更される相異点を除いて、その他の構成は前記実施形態3の低侵襲巾着縫合デバイス1Bと同様である。   The minimally invasive purse string device 1H according to the ninth embodiment of the present invention is configured such that the insertion tube portion 2H and the purse string suture mechanism are configured as shown in FIGS. 28 (a) and 28 (b). Other configurations are the same as those of the minimally invasive purse string suturing device 1B of the third embodiment except for differences that are partially changed from the configurations of the insertion tube portion 2B and the purse string suturing mechanism of the suturing device 1B.

したがって、図28(a)、(b)において、前記実施形態3と同じ機能・構成を有する部材には、一部形状が異なっていても説明を簡明化するため図18(a)〜(c)、図19、20、26(a)〜(d)の構成部材と同一の符号を付し(あるいは実施形態3と同一の符号にBに替えてHを付記し)、実施形態3の挿入管部2B及び巾着縫合機構との相違する関連部以外の顎部3B、操作部4B、挿入管部2Bと全く同様の機能・構成を有するので、これらの詳細な説明は省略する。   Accordingly, in FIGS. 28A and 28B, the members having the same functions and configurations as those of the third embodiment are illustrated in FIGS. 18A to 18C in order to simplify the description even if the shapes are partially different. ), The same reference numerals as those in FIGS. 19, 20, 26 (a) to (d) are attached (or the same reference numerals as in the third embodiment are replaced with B and H is added), and the third embodiment is inserted. Since the jaw portion 3B, the operation portion 4B, and the insertion tube portion 2B other than the related portions that are different from the tube portion 2B and the purse string stitching mechanism have the same functions and configurations, detailed descriptions thereof are omitted.

実施形態9の巾着縫合機構は、図28(a)、(b)に示すように、細径薄肉中空管状体からなり、後端に縫合操作部11Hcが連結され、先端が尖鋭状に形成された尖鋭端11a1、11b1を有し、尖鋭端11a1、11b1近傍に縫合糸12の両端12a、12bがそれぞれ挿通する縫合糸挿通口11a2、11b2が1個又は2個開設された一対の第1縫合針11a及び第2縫合針11bと、一対の第1縫合針11a及び第2縫合針11bが着脱可能に挿通される一対の細径薄肉中空管状部14aが連通して連結される薄肉スリット状連通部14bからなる縫合針ケース14と、を有する縫合針カートリッジ11Hと、一端12aが第1縫合針11aの、他端12bが第2縫合針11bの縫合糸挿通口11a2、11b2にそれぞれ挿通され、中間部12cが縫合糸ケース14のスリット状連通部14b内に収容される縫合糸12と、挿入管部2HのX軸方向後端面から先端部に亘り開設され、縫合針カートリッジ11Hが着脱可能に挿通される縫合針カートリッジ挿通孔2Hcと、から構成される。   As shown in FIGS. 28 (a) and 28 (b), the purse string suturing mechanism of the ninth embodiment is made of a thin thin hollow tubular body, and a suture operating portion 11Hc is connected to the rear end, and the tip is formed in a sharp shape. A pair of first sutures having one or two suture insertion ports 11a2 and 11b2 through which both ends 12a and 12b of the suture thread 12 are respectively inserted in the vicinity of the sharp ends 11a1 and 11b1. A thin slit-like communication in which a needle 11a and a second suture needle 11b and a pair of small-diameter thin-walled hollow tubular portions 14a through which the pair of first and second suture needles 11a and 11b are detachably inserted are connected. A suture needle cartridge 11H having a suture needle case 14 composed of a portion 14b, one end 12a of the first suture needle 11a, and the other end 12b of the suture needle insertion hole 11a2, 11b2 of the second suture needle 11b. The intermediate portion 12c is opened from the X-axis direction rear end surface of the insertion tube portion 2H to the distal end portion and the suture needle 12 accommodated in the slit-like communication portion 14b of the suture case 14, and the suture needle cartridge 11H is opened. And a suture needle cartridge insertion hole 2Hc that is detachably inserted.

縫合操作部11Hcは、図28(b)に示すように、反顎部屈曲方向である図示Y軸上方向側が凹面状に形成された把手部11Hcaを有する。縫合操作部11Hcは、後述するが、任意の形状に選択的に形成される。   As shown in FIG. 28 (b), the suturing operation portion 11Hc has a handle portion 11Hca formed in a concave shape on the Y-axis upper direction side, which is the anti-jaw portion bending direction. As will be described later, the stitching operation portion 11Hc is selectively formed in an arbitrary shape.

縫合針カートリッジ挿通孔2Hcは、縫合針カートリッジ11Hの一対の中空管状部14aが挿通するための一対の円筒状孔2Hc1と、一対の円筒状孔2Hc1が連通して連結され、縫合針カートリッジ11Hのスリット状連通部14bが挿通するためのスリット状連通孔2Hc2とから形成される。   The suture needle cartridge insertion hole 2Hc is connected to a pair of cylindrical holes 2Hc1 through which the pair of hollow tubular portions 14a of the suture needle cartridge 11H are inserted, and the pair of cylindrical holes 2Hc1. It is formed from a slit-shaped communication hole 2Hc2 through which the slit-shaped communication portion 14b is inserted.

縫合針カートリッジ11Hは、安全衛生をキープするため、全体又は一対の第1縫合針11a及び第2縫合針11bから取り外した縫合操作部11Hcを除いて単回使用で廃棄される。   The suturing needle cartridge 11H is discarded after single use except for the suturing operation portion 11Hc removed from the whole or the pair of the first suturing needle 11a and the second suturing needle 11b in order to keep safety and hygiene.

実施形態9の挿入管部2Hは、図28(a)に示すように、X軸方向に沿って断面Y軸方向に2分割に縦断される一対の分割体2Ha、2Hbから構成され、ねじ部材2HFにより分解可能に一体的に組み付けられる。挿入管部2Hの断面Y軸方向の分割形状は、縫合針カートリッジ11H、開閉操作ロッド7B、屈曲操作部材41J等の挿入管部2H内に挿通される構成部材の配置状況に応じて種々の形状に選択的に変更することができる。   As shown in FIG. 28A, the insertion tube portion 2H according to the ninth embodiment includes a pair of divided bodies 2Ha and 2Hb that are vertically divided in two along the X-axis direction along the X-axis direction. It is assembled in an integrated manner so that it can be disassembled with 2HF. The divided shape of the insertion tube portion 2H in the cross-sectional Y-axis direction has various shapes depending on the arrangement state of the constituent members inserted into the insertion tube portion 2H, such as the suture needle cartridge 11H, the opening / closing operation rod 7B, and the bending operation member 41J. Can be selectively changed.

また、いずれも図示しないが、前記実施形態3と同様に構成される環状把手部を含む操作部は挿入管部2Hの後端部に着脱可能に連結され、前記実施形態1、3等と同様に構成されるいずれも図示しない第1支軸は挿入管部2Hの先端部及び第1顎の後端部に、第2支軸は第1顎及び第2顎の後端部にそれぞれ着脱可能に挿通されることにより、挿入管2H内に挿通される縫合針カートリッジ11H、開閉操作ロッド7B等の構成部材及び図示しない顎部の構成部材の消毒洗浄が容易に行なえるように解体可能に構成される。   In addition, although not shown, an operation unit including an annular handle portion configured in the same manner as in the third embodiment is detachably connected to the rear end portion of the insertion tube portion 2H, and is the same as in the first, third, and the like. The first support shaft (not shown) is configured to be attachable to and detachable from the distal end portion of the insertion tube portion 2H and the rear end portion of the first jaw, and the second support shaft is attached to the rear end portion of the first jaw and the second jaw. By being inserted into the insertion tube 2H, components such as the suture needle cartridge 11H, the opening / closing operation rod 7B, and the jaw member (not shown) can be disassembled so that disinfection and cleaning can be easily performed. Is done.

また、図28(c)に図28(a)のN部に相当する部分の変形実施形態を示すように、縫合針ケース14の外面及び縫合針カートリッジ挿通孔2Hcの内面形状を平面形状とし簡素化することもできる。すなわち、縫合針ケース14の外面は一対の中空管状部14aの外面と薄肉スリット状連通部14bの外面とが平面形状に連接され、同様に、縫合針カートリッジ挿通孔2Hcの内面は一対の円筒状孔2Hc1の内面とスリット状連通孔2Hc2の内面とが平面形状に連接され形成される。   Further, as shown in FIG. 28 (c) which is a modified embodiment of the portion corresponding to the N portion of FIG. 28 (a), the outer surface of the suture needle case 14 and the inner surface shape of the suture needle cartridge insertion hole 2Hc are simply planar. It can also be converted. That is, the outer surface of the suture needle case 14 is connected to the outer surface of the pair of hollow tubular portions 14a and the outer surface of the thin slit communication portion 14b in a planar shape. Similarly, the inner surface of the suture needle cartridge insertion hole 2Hc is a pair of cylindrical shapes. The inner surface of the hole 2Hc1 and the inner surface of the slit-shaped communication hole 2Hc2 are connected in a planar shape.

図28(c)に示す変形実施形態においては、縫合針カートリッジ11Hを挿入管部2Hの縫合針カートリッジ挿通孔2Hc内に挿通した状態で、挿入管部2Hを2分割に解体してそのまま挿入管部2Hの縫合針カートリッジ挿通孔2Hcの2分割内面から取り出すことができる。図28(a)の実施形態9においては、先に縫合針カートリッジ11Hを挿入管部2Hの縫合針カートリッジ挿通孔2Hc内から後方に引抜いた後で挿入管部2Hを2分割に解体する必要がある。
(実施形態10)
In the modified embodiment shown in FIG. 28 (c), the insertion tube portion 2H is disassembled into two parts with the suture needle cartridge 11H inserted into the suture needle cartridge insertion hole 2Hc of the insertion tube portion 2H, and the insertion tube is left as it is. The suture needle cartridge insertion hole 2Hc of the portion 2H can be taken out from the inner surface of the two parts. In the ninth embodiment shown in FIG. 28A, it is necessary to disassemble the insertion tube portion 2H into two parts after the suture needle cartridge 11H is first pulled backward from the suture needle cartridge insertion hole 2Hc of the insertion tube portion 2H. is there.
(Embodiment 10)

本発明の実施形態10に係る低侵襲巾着縫合デバイス1Jは、縫合針カートリッジ11J、顎部3J及び顎部屈曲駆動機構の構成が、図29(a)、図30に示すように、前記実施形態9の縫合針カートリッジ11H及び実施形態1、3の顎部屈曲駆動機構の構成とは一部変更される相異点を除いて、その他の構成は前記実施形態9及び実施形態1、3の低侵襲巾着縫合デバイス1H及び低侵襲巾着縫合デバイス1、1B等と同様である。   A minimally invasive purse string suturing device 1J according to Embodiment 10 of the present invention has the configuration of the suture needle cartridge 11J, the jaw 3J, and the jaw bending drive mechanism as shown in FIGS. 29 (a) and 30. 9 is the same as that of Embodiment 9 and Embodiments 1 and 3 except for the differences that are partially changed from the configuration of the suture needle cartridge 11H of Embodiment 9 and the configuration of the jaw bending drive mechanism of Embodiments 1 and 3. This is the same as the invasive purse string suturing device 1H and the minimally invasive purse string suturing device 1, 1B.

したがって、図29(a)、図30において、前記実施形態9及び実施形態1、3と同じ機能・構成を有する部材には、一部形状が異なっていても説明を簡明化するため図28(a)〜(c)及び図1〜15、18(a)〜(c)、図19の構成部材と同一の符号を付し(あるいは実施形態9及び実施形態1〜3と同一の符号にHに替えてJを付記し)、実施形態9及び実施形態1〜3の縫合針カートリッジ11H、顎部3J及び顎部屈曲駆動機構との相違する関連部以外の顎部3、操作部4B、挿入管部2Hと全く同様の機能・構成を有するので、これらの詳細な説明は、省略する。   Therefore, in FIGS. 29A and 30, the members having the same functions and configurations as those of the ninth embodiment and the first and third embodiments are illustrated in FIG. a) to (c) and FIGS. 1 to 15, 18 (a) to (c), and the same reference numerals as those in FIG. (J is added), and the suture needle cartridge 11H, the jaw portion 3J, and the jaw portion 3 other than the related portions that are different from the jaw bending drive mechanism, the operation portion 4B, and the insertion of the ninth embodiment and the first to third embodiments Since it has exactly the same function and configuration as the pipe portion 2H, a detailed description thereof will be omitted.

実施形態10の縫合針カートリッジ11Jは、図29(a)に示すように、縫合操作部11Jcの把手部11Jcaを含む全体形状が実施形態9の把手部11Hcaとは異なる。   As shown in FIG. 29A, the suture needle cartridge 11J of the tenth embodiment is different from the handle portion 11Hca of the ninth embodiment in the overall shape including the handle portion 11Jca of the suturing operation portion 11Jc.

また、第1縫合針11Ja及び第2縫合針11Jbは、ニッケルチタン合金などの超弾性形状記憶合金からなり、顎部3Jの第1支軸h1の外周面に対応する先端近傍区域が顎部3Jの屈曲する方向に屈曲形成されている。   Further, the first suture needle 11Ja and the second suture needle 11Jb are made of a superelastic shape memory alloy such as a nickel titanium alloy, and the tip vicinity area corresponding to the outer peripheral surface of the first support shaft h1 of the jaw 3J is the jaw 3J. Are bent in the bending direction.

縫合操作部11Jcに替えて、図29(b)、(c)、(d)に示すように、把手部11Kca、11Lca、11Mcaの形状が異なる各種変形形態の縫合操作部11Kc、11Lc、11Mcを選択的に採用することができる。   Instead of the stitching operation portion 11Jc, as shown in FIGS. 29 (b), (c), and (d), the stitching operation portions 11Kc, 11Lc, and 11Mc of various deformation forms having different shapes of the handle portions 11Kca, 11Lca, and 11Mca are used. It can be selectively employed.

さらに、実施形態10の顎部屈曲駆動機構は、図30に示すように、実施形態1、3等における一対のチューブ状屈曲操作部材41に替えて、縫合針カートリッジ挿通孔2Hcに平行配置されX軸方向に開設された一本の貫通孔2Hg内にX軸方向移動可能に挿通され(図28(a)参照)、且つ、先端部に第1顎5の支持片5J後端部に突設された連係部材5Jdに形成されたスライドガイド孔5Jeにスライド可能に係合する小ロッド状係合部41Jaがスライドガイド孔5Jeに向けて突設された一本のロッド状屈曲操作部材41Jと、屈曲操作部材41Jの後端部を連結してX軸方向前進又は後退させ連係部材5Jdのスライドガイド孔5Jeに対する押圧又は引込動作を行うことにより、顎部3Jを第1支軸h1周りに回動させてX軸に対する一方向への顎部3Jの屈曲角度を変更させる顎部屈曲駆動機構(実施形態3と同様で、図示しない)と、を有する。   Furthermore, the jaw bending drive mechanism of the tenth embodiment is arranged in parallel with the suture needle cartridge insertion hole 2Hc instead of the pair of tube-shaped bending operation members 41 in the first and third embodiments, as shown in FIG. It is inserted into one through-hole 2Hg opened in the axial direction so as to be movable in the X-axis direction (see FIG. 28 (a)), and protrudes from the rear end of the support piece 5J of the first jaw 5 at the front end. A single rod-shaped bending operation member 41J in which a small rod-shaped engagement portion 41Ja slidably engaged with a slide guide hole 5Je formed in the linked member 5Jd is projected toward the slide guide hole 5Je; The rear end portion of the bending operation member 41J is connected and moved forward or backward in the X-axis direction, and the jaw portion 3J is rotated around the first support shaft h1 by performing a pressing or pulling operation on the slide guide hole 5Je of the linkage member 5Jd. Let me (The same as in Embodiment 3, not shown) jaw jaw bending drive mechanism for changing the bending angle of 3J in one direction relative to the axis having an.

したがって、実施形態10の顎部屈曲駆動機構においては、第1縫合針11Ja及び第2縫合針11Jbの第1支軸h1の外周面に対応する先端近傍区域が顎部3Jの屈曲する方向に屈曲形成されるので、第1縫合針11Ja及び第2縫合針11Jbを実施形態1、3における一対のチューブ状屈曲操作部材41内に挿通する必要性が無く、縫合針カートリッジ11Jを直に挿入管部2Hの縫合針カートリッジ挿通孔2Hc内に挿通するとともに、実施形態1、3の一対のチューブ状屈曲操作部材41に替えて一本のロッド状操作部材41Jを適用する好適な構成とすることにより、顎部屈曲駆動機構の信頼性を一層向上させることができる。   Therefore, in the jaw bending drive mechanism of the tenth embodiment, the vicinity of the tip corresponding to the outer peripheral surface of the first support shaft h1 of the first suture needle 11Ja and the second suture needle 11Jb is bent in the bending direction of the jaw 3J. Therefore, there is no need to insert the first suture needle 11Ja and the second suture needle 11Jb into the pair of tubular bending operation members 41 in the first and third embodiments, and the suture needle cartridge 11J is directly inserted into the insertion tube portion. By inserting into the 2H suture needle cartridge insertion hole 2Hc and adopting a single rod-like operation member 41J instead of the pair of tube-like bending operation members 41 of the first and third embodiments, The reliability of the jaw bending drive mechanism can be further improved.

以上から、本発明の実施形態1〜10に係る低侵襲巾着縫合デバイス1〜1Jによると、顎部3、3D、3Jの挿入管部2、2B、2D、2F、2Hに対する屈曲角度がいかなる場合であっても、開閉操作ロッド7、7B、7D、7E、7FのX軸方向移動動作又はX軸回り回転動作だけで顎部3、3D、3Jの把持動作及び被縫合体の巾着縫合動作が行われるので、把持動作の際、特許文献1に記載の巾着縫合用器具のような、顎部3、3B、3D、3Jと開閉操作ロッド7、7B、7D、7E、7Fとの間の構成部材が挿入管部2、2B、2D、2F、2Hの径方向外側に大きく張り出すようなことはなく、手術時に人体内部に広いスペースが無いような場合であっても、把持動作により低侵襲巾着縫合デバイス1〜1Jの一部が人体に不意に接触するようなことが抑制され、安全に巾着縫合作業を行うことができる。   From the above, according to the minimally invasive purse string suture devices 1 to 1J according to Embodiments 1 to 10 of the present invention, any bending angle of the jaws 3, 3D, and 3J with respect to the insertion tube portions 2, 2B, 2D, 2F, and 2H Even so, the gripping operation of the jaws 3, 3D, and 3J and the purse string sewing operation of the body to be sutured can be performed only by the X axis direction movement operation or the X axis rotation operation of the open / close operation rods 7, 7B, 7D, 7E, and 7F. In the gripping operation, the configuration between the jaws 3, 3B, 3D, 3J and the open / close operation rods 7, 7B, 7D, 7E, 7F, such as the purse string suture instrument described in Patent Document 1, is performed. Even if there is no large space inside the human body at the time of surgery, the member does not protrude greatly to the outside in the radial direction of the insertion tube portions 2, 2B, 2D, 2F, 2H, and is less invasive by the grasping operation. Part of the purse string suturing device 1-1J on the human body Thing is suppressed to contact the will safely be able to perform the purse string suturing operation.

また、顎部3、3B、3D、3Jと挿入管部2、2B、2D、2F、2Hとの間には、特許文献1のようなリンク機構がなく、軽量、コンパクトでシンプルな構成であるので、経年変化等により把持動作がスムースに行われなくなり手術者の使用感を損ねる等の問題点を改善することができる。   Moreover, there is no link mechanism like patent document 1 between jaw part 3, 3B, 3D, 3J and insertion pipe part 2, 2B, 2D, 2F, 2H, and it is a lightweight, compact, and simple structure. Therefore, it is possible to improve the problems such as the gripping operation is not smoothly performed due to secular change or the like and the operator's feeling of use is impaired.

また、第1凹条溝53及び第2凹条溝63にそれぞれ第1及び第2縫合針11a、11bを通過させるだけで生体管T1、T2の切断端部C1、C2に巾着縫合がなされるので、巾着縫合作業の時間を短縮して手術時の人体への負担も少ない低侵襲化を実現することができる。   Further, the purse string suture is performed on the cut ends C1 and C2 of the biological tubes T1 and T2 only by passing the first and second suture needles 11a and 11b through the first groove groove 53 and the second groove groove 63, respectively. Therefore, it is possible to reduce the time for the purse string stitching operation and to realize a minimally invasive manner with less burden on the human body during the operation.

さらに、特許文献1のような複雑なリンク機構がなく、最少部品数によるコンパクトでシンプルな顎開閉ガイド機構又は連係部材5Jdの構成により顎部3、3B、3D、3Jの回動動作を行えるようになり、経年劣化等による非平滑な動きのため顎部3、3D、3Jの角度変更(開閉)動作の時間が長くなることなどで手術者の使用感が損なわれる等の従来の問題点が改善される。   Further, there is no complicated link mechanism as in Patent Document 1, and the rotation of the jaws 3, 3B, 3D, 3J can be performed by the configuration of the simple and simple jaw opening / closing guide mechanism or the linking member 5Jd with the minimum number of parts. Due to non-smooth movement due to deterioration over time and the like, conventional problems such as a loss of operating feeling of the surgeon due to a long time for the angle changing (opening / closing) operation of the jaws 3, 3D, 3J, etc. Improved.

それに加えて、屈曲操作部材41又は及び第1縫合針11a、11Ja及び第2縫合針11b、11Jbは可撓性を有しているので、顎部3、3D、3Jの回動による屈曲動作が滑らかになり、手術者の使用感をさらに良好にすることができる。   In addition, since the bending operation member 41 and the first suture needles 11a and 11Ja and the second suture needles 11b and 11Jb have flexibility, the bending operation by the rotation of the jaws 3, 3D, and 3J is possible. It becomes smooth and can improve the operator's feeling of use.

また、顎部3、3B、3D、3Jで行われる巾着縫合作業を手術者が人体から離れた屈曲操作部材41、41Jの環状把手部2b、2Bb側で行えるようになるので、手術の安全性をさらに高めることができる。   In addition, the purse string sewing operation performed on the jaws 3, 3B, 3D, and 3J can be performed by the surgeon on the side of the annular handle portions 2b and 2Bb of the bending operation members 41 and 41J separated from the human body. Can be further enhanced.

また、顎部3、3B、3Dの屈曲動作を操作する屈曲操作部材41を利用して顎部3にまで第1及び第2縫合針11a、11bを到達させることができるので、第1及び第2縫合針11a、11bを顎部3、3Dにまで到達させるための構造を別途挿入管部2、2B、2D、2F内部に設ける必要がなく、最少部品数による軽量、コンパクトでシンプルな構成となることから、低コストの低侵襲巾着縫合デバイスを提供することができる。   In addition, the first and second suture needles 11a and 11b can be made to reach the jaw portion 3 by using the bending operation member 41 that operates the bending operation of the jaw portions 3, 3B, and 3D. 2 There is no need to separately provide a structure for allowing the suture needles 11a, 11b to reach the jaws 3, 3D inside the insertion tube parts 2, 2B, 2D, 2F, and a lightweight, compact and simple configuration with a minimum number of parts. As a result, a low-cost minimally invasive purse string suturing device can be provided.

さらに、屈曲操作ノブ44、44B又は減速機付小型電動モータ45によるX軸方向の螺進退動作により、挿入管部2、2Bに対する屈曲操作部材41の移動量を細かく調整できるので、顎部3の挿入管部2に対する所望の屈曲角度を細かく変更できる。   Further, the amount of movement of the bending operation member 41 with respect to the insertion tube portions 2 and 2B can be finely adjusted by the screw operation of the bending operation knobs 44 and 44B or the small electric motor 45 with a reduction gear in the X-axis direction. A desired bending angle with respect to the insertion tube portion 2 can be finely changed.

また、実施形態2、4及び8における顎開閉駆動機構及び顎部屈曲駆動機構に電動マイクロリニアアクチュエータ8C、44Cや減速機付小型電動モータ45、8Gなどの自動式操作手段を用いたパワーアシスト機構を構成する場合は、顎部の顎開閉及び顎部屈曲操作をすべて自動制御化できるので、巾着縫合手術の省力化、容易化及び操作性等を向上させる。   Further, the power assist mechanism using automatic operation means such as the electric micro linear actuators 8C and 44C and the small electric motors 45 and 8G with a reduction gear for the jaw opening / closing drive mechanism and the jaw bending drive mechanism in the second, fourth and eighth embodiments. Since the jaw opening / closing and jaw bending operation of the jaw can be automatically controlled, the labor saving, facilitation and operability of the purse string suture operation are improved.

なお、本発明の実施形態1等では、巾着縫合作業を行う対象を腸などの生体管T1、T2の切断端部C1、C2にしているが、その他の生体管などの柔軟性管状体に対して巾着縫合作業を行う際にも低侵襲巾着縫合デバイス1〜1Jを好適に適用できる。   In Embodiment 1 of the present invention, the purse sewn operation is performed on the cut ends C1 and C2 of the biological tubes T1 and T2 such as the intestine. Thus, the minimally invasive purse string suture devices 1 to 1J can be suitably applied also when performing the purse string suture operation.

また、前記実施形態1〜10において、顎部3、3B、3D、3Jの開閉動作は、第1顎5、5Bが非開閉固定部として構成され第2顎6が開閉可動部として構成されているが、第1顎5、5Bあるいは、例えば公知の鉗子などに見られるように、両万の第1顎5、5B及び第2顎6を開閉可動部として構成することもできる。   In the first to tenth embodiments, the jaws 3, 3B, 3D, and 3J are opened and closed with the first jaws 5 and 5B configured as non-opening and closing fixed portions and the second jaw 6 configured as an opening and closing movable portion. However, as can be seen in the first jaws 5 and 5B or, for example, a known forceps, both the first jaws 5 and 5B and the second jaw 6 can be configured as opening and closing movable parts.

さらに、前記第1顎5、5B、5J及び第2顎6、6D、前記挿入管部2、2B、2D、2F、前記開閉操作ロッド7、7B、7D、7E、7F等の生体内の挿入される構成部材は、いずれも適宜な剛性及び強度を有する医療適合性硬質樹脂材料から形成し、前記第1顎及び第2顎は第1支持軸h1及び第2支持軸h2をそれぞれ着脱可能に構成し、前記挿入管部や開閉操作ロッドは、図5(b)、図18(a)、図19、図21等に示すように、前記操作部4、4A、4B、4C、4E、4F、4Gにおけるそれぞれ環状把手部2b、2Bb、2Fbや把手部材42、環状雄螺旋部材8Bcあるいは環状操作ロッド駆動部材8Cc等との連結部2k、2Bkや7k、7Bkをそれぞれ着脱可能な、例えば嵌合機構又螺合機構により、構成することでいずれも分解可能とし、これらの構成部材は、一回又は複数回の前記巾着縫合処置後に選択的に廃棄(使い捨て)可能(ディスポ化)にすることができる。   Further, insertion of the first jaw 5, 5B, 5J and the second jaw 6, 6D, the insertion tube portion 2, 2B, 2D, 2F, the opening / closing operation rod 7, 7B, 7D, 7E, 7F, etc. Each of the constituent members is formed from a medically compatible hard resin material having appropriate rigidity and strength, and the first and second jaws are detachable from the first support shaft h1 and the second support shaft h2, respectively. As shown in FIGS. 5B, 18A, 19, 21 and the like, the insertion tube portion and the opening / closing operation rod are configured as the operation portions 4, 4A, 4B, 4C, 4E, 4F. 4G can respectively attach and detach the connecting portions 2k, 2Bk, 7k, 7Bk to the annular handle portions 2b, 2Bb, 2Fb, the handle member 42, the annular male spiral member 8Bc, the annular operation rod drive member 8Cc, etc. Mechanism or screwing mechanism. Both the degradable by, these components can be on one or selectively dropping a plurality of times of the after purse string suturing (disposable) can (disposable reduction).

このディスポ化構成により、巾着縫合デバイスの衛生管理の信頼性が一層向上する。   This disposable configuration further improves the hygiene management reliability of the purse string suturing device.

本発明の特定の実施形態についての前記説明は、例示を目的として提示したものである。それらは、網羅的であったり、記載した形態そのままに本発明を制限したりすることを意図したものではない。数多くの変形や変更が、前記の記載内容に照らして可能であることは当業者に自明である。   The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration. They are not intended to be exhaustive or to limit the invention to the precise form described. It will be apparent to those skilled in the art that many modifications and variations are possible in light of the above description.

本発明の低侵襲巾着縫合デバイスは、顎開閉駆動機構及び顎部屈曲駆動機構を最少の部品点数により簡潔かつ軽量・コンパクト化し、顎部の挿入管部に対する屈曲角度がいかなる場合であっても顎部の開閉動作及び被縫合体の巾着縫合6が可能で、安全性、信頼性、機能性、操作性、使用感及び経済性を向上させた低侵襲巾着縫合デバイスを提供できることから広範な医療業界に貢献できる。   The minimally invasive purse string suturing device according to the present invention has a jaw opening / closing drive mechanism and a jaw bending drive mechanism that are simple, lightweight, and compact with a minimum number of parts, so that the jaw can be bent regardless of the bending angle of the jaw with respect to the insertion tube. Wide range of medical industry because it can provide a minimally invasive purse string suture device that is capable of opening and closing parts and purse string sutures 6 and improving safety, reliability, functionality, operability, usability and economy Can contribute.

1、1A、1B、1C、1D、1E、1F、1G、1H、1J 低侵襲巾着縫合デバイス
2、2B、2D、2F 挿入管部
2Af、2Ce、2Cf、2Ge 取付金具
2a 第1支持突起
2b、2Bb、2Fb 環状把手部
2Bd、2Ed、2Fd 後端部
2Be スリット
2k、2Bk、7k、7Bk 連結部
2c 貫通孔
2d 螺旋孔
2e 雌螺旋
2Ed 固定ハンドル構造
2Ea 把持ハンドル
2f スリット
2Fd 後端部
2g 縫合糸挿通孔
3、3B、3D、3J 顎部
4、4A、4B、4C、4E、4F、4G 操作部
5、5B、5J 第1顎
5a、5Ba、5Ja 回動支持部
5b、5Bb、5Jb 第1把持部
5c、5Bc、5Jc、6c、6Dc 支持片
5Jd 連係部材
6、6D 第2顎
6a 縫合操作部
6b 第2把持部
6Dd ガイド面
6De 先端部
7、7B、7D、7E、7F 開閉操作ロッド
7a 第1ロッド
7b 第2ロッド
7Bc ストッパ
7Bd 止めねじ
7Eb 後端部
7Ec 球状体
8 顎開閉操作ノブ
8a 第1係合溝
8b 第2係合溝
8Bc 環状雄螺旋部材
8Be、8Bg 止めねじ
8Bf ストッパ
8Bh、8Cc ガイド面
8c フランジ状把手部
8C 電動マイクロリニアアクチュエータ
8Ca、8Ga 本体
8Cb ロッド
8Cc 環状操作ロッド駆動部材
8Cd 取付金具
8Ch ガイド面
8d 連結プレート
8E 顎開閉操作ハンドル
8Eb 凹溝
8Ep 支持ピン
8G 減速機付小型電動モータ
8Ga 本体
8Gb 先端フランジ
8Gc 回転軸
9 フック
9a 係合突起
9b 第3コイルバネ
10 腸(被縫合体)
11 縫合針カートリッジ
11a 第1縫合針
11b 第2縫合針
11c 縫合操作部
11d、11e 止めねじ
12 縫合糸
12a 一端
12b 他端
12c Uターン部
13 第1コイルバネ(付勢部材)
41、41J 屈曲操作部材
41a 支軸対応部
41Ja 係合部
42 把手部材
42a 連結部
42b 延出板
42c 貫通孔
42d 取付金具
43 L字金具
44 顎部屈曲操作ノブ
44a 雄螺旋軸
44b 雄螺旋
44B 屈曲角度操作手段
44Ba 突起部
44Bc 雄螺旋部材
44Be、44Bg、44Bi 止めねじ
44Bf、44Bh ストッパ
44Bj、44Cc ガイド面
44C 電動マイクロリニアアクチュエータ
44Ca 本体
44Cb ロッド
44Cc 環状屈曲操作部材駆動部材
44Cd 取付金具
44Cj ガイド面
45 減速機付小型電動モータ
47 回転軸
51 第1凹部
52 第1歯部
52a 第1側面
52b 第1平坦面
53 第1凹条溝
53a 第1案内部
53b 第1開口部
61 第2凹部
62 第2歯部
62a 第2側面
62b 第2平坦面
63 第2凹条溝
63a 第2案内部
63b 第2開口部
71、71D 板状部
71a ガイド面
71F 先端部
71Fa ガイド部材
71Fb ガイド部
72 環状凹部
72a 第2ロッド本体
72b スライド棒
72c 環状凹部
80 電動マイクロリニアアクチュエータ
81 本体
82 ロッド
h1 第1支軸
h2 第2支軸
h3 第3支軸
M 人体
1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1J Minimally invasive purse string suture device 2, 2B, 2D, 2F Insertion tube portion 2Af, 2Ce, 2Cf, 2Ge Mounting bracket 2a First support protrusion 2b, 2Bb, 2Fb annular handle 2Bd, 2Ed, 2Fd rear end 2Be slit 2k, 2Bk, 7k, 7Bk connecting part 2c through hole 2d spiral hole 2e female spiral 2Ed fixed handle structure 2Ea grip handle 2f slit 2Fd rear end 2g suture thread Insertion hole 3, 3B, 3D, 3J Jaw part 4, 4A, 4B, 4C, 4E, 4F, 4G Operation part 5, 5B, 5J First jaw 5a, 5Ba, 5Ja Rotation support part 5b, 5Bb, 5Jb First Grip part 5c, 5Bc, 5Jc, 6c, 6Dc Support piece 5Jd Linking member 6, 6D Second jaw 6a Suture operation part 6b Second grip part 6Dd Guide 6De Tip portion 7, 7B, 7D, 7E, 7F Open / close operation rod 7a First rod 7b Second rod 7Bc Stopper 7Bd Set screw 7Eb Rear end portion 7Ec Spherical body 8 Jaw opening / closing operation knob 8a First engagement groove 8b Second engagement Joint groove 8Bc Annular male spiral member 8Be, 8Bg Set screw 8Bf Stopper 8Bh, 8Cc Guide surface 8c Flange-shaped handle portion 8C Electric micro linear actuator 8Ca, 8Ga body 8Cb Rod 8Cc Annular operation rod drive member 8Cd Mounting bracket 8Ch Guide surface 8d 8E Jaw opening / closing operation handle 8Eb Groove 8Ep Support pin 8G Small electric motor with reduction gear 8Ga body 8Gb Tip flange 8Gc Rotating shaft 9 Hook 9a Engagement protrusion 9b Third coil spring 10 Intestine (to be sutured)
DESCRIPTION OF SYMBOLS 11 Suture needle cartridge 11a 1st suture needle 11b 2nd suture needle 11c Suture operation part 11d, 11e Set screw 12 Suture thread 12a One end 12b Other end 12c U-turn part 13 1st coil spring (biasing member)
41, 41J bending operation member 41a support shaft corresponding portion 41Ja engagement portion 42 handle member 42a connecting portion 42b extension plate 42c through hole 42d mounting bracket 43 L-shaped bracket 44 jaw bending operation knob 44a male spiral shaft 44b male spiral 44B bending Angle operation means 44Ba Protrusion 44Bc Male spiral member 44Be, 44Bg, 44Bi Set screw 44Bf, 44Bh Stopper 44Bj, 44Cc Guide surface 44C Electric micro linear actuator 44Ca Body 44Cb Rod 44Cc Annular bending operation member drive member 44Cd Guide surface 44Cj Small electric motor with machine 47 Rotating shaft 51 First concave portion 52 First tooth portion 52a First side surface 52b First flat surface 53 First concave groove 53a First guide portion 53b First opening portion 61 Second concave portion 62 Second tooth Part 62a Second side 2b 2nd flat surface 63 2nd concave groove 63a 2nd guide part 63b 2nd opening part 71, 71D Plate-like part 71a Guide surface 71F Tip part 71Fa Guide member 71Fb Guide part 72 Annular recessed part 72a 2nd rod main body 72b Slide rod 72c annular recess 80 electric micro linear actuator 81 main body 82 rod h1 first support shaft h2 second support shaft h3 third support shaft M human body

Claims (7)

サーキュラー吻合装置を用い生体管の病巣部を切除してその切断端部双方同士を吻合する直前に前記各切断端部を把持しながら巾着縫合を行う低侵襲巾着縫合デバイスであって、
主軸であるX軸、近位端すなわち後端及び遠位端すなわち先端を有し、生体内に挿入される略直管状の挿入管部と、
前記挿入管部の先端部にX軸に対して屈曲可能に連結され、前記生体管の切断端部を径方向から把持する顎部と、
前記挿入管部の内部にX軸方向移動可能に挿通され、縫合糸の両端がそれぞれ接続された一対の縫合針を備える縫合針カートリッジを有し、前記生体管の双方の切断端部を巾着縫合する巾着縫合機構と、
前記挿入管部の後端部に連結され、前記顎部及び縫合針カートリッジを操作する操作部と、を備え、
前記顎部は、
後端部が前記挿入管部の先端部に第1支軸によりX軸に対して回動し屈曲可能に軸支される第1顎と、
後端部近傍が前記第1顎の後端部近傍に第2支軸により前記第1顎方向に回動可能に軸支され、前記第1顎に対して閉じ方向又は開き方向に回動することにより前記第1顎とで把持動作を行う第2顎と、を備え、
前記操作部と顎部との間には、
前記挿入管部内部にX軸方向移動もしくはX軸回り回転可能に挿通され、前記顎部の開閉動作を行なう開閉操作ロッドと、
前記顎部のX軸に対する任意の屈曲角度において、前記開閉操作ロッドのX軸方向移動動作もしくはX軸回り回転動作により前記第2顎を前記第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる顎開閉ガイド機構と、を備える顎開閉駆動機構を有し、
前記顎開閉ガイド機構は、
前記第1顎と第2顎の間に設けられ、両者が離間して傾斜し開き姿勢に保持する付勢部材と、
前記開閉操作ロッドの先端部にX軸方向前方に延設され、前記第2顎の後端部の前記第1顎の後端部に対向する側面に接触可能にX軸に対して偏心し配置された曲面又は角柱状ガイド部が形成された任意断面形ガイド部材と、を有し、
前記顎部のX軸に対する任意の屈曲角度において、前記開閉操作ロッドのX軸回り所定角度の正方向又は逆方向回転動作により前記ガイド部材のガイド部が前記第2顎後端部の側面に摺接して当該側面が次第に押圧又は押圧解除されることで前記第2顎を第1顎側への閉じ方向又は開き方向に回動させるように構成されている、ことを特徴とする低侵襲巾着縫合デバイス。
A minimally invasive purse string suturing device that performs purse string suturing while grasping each of the cut ends immediately before excision of the lesion part of the biological tube using a circular anastomosis device and anastomosing both of the cut ends,
An X-axis that is a main axis, a proximal end or rear end and a distal end or tip, and a substantially straight tubular insertion tube portion that is inserted into a living body;
A jaw that is connected to the distal end of the insertion tube so as to be bendable with respect to the X-axis, and grips the cut end of the biological tube from the radial direction;
Wherein the X-axis direction movably inserted into the inner portion of the insertion tube portion, both ends of the suture has a suturing needle cartridge comprising a pair of needles, each connected, purse the cut ends of both the natural canal A purse string stitching mechanism for stitching;
An operation portion connected to a rear end portion of the insertion tube portion and operating the jaw portion and the suture needle cartridge;
The jaw is
A first jaw whose rear end portion is pivotally supported by the first support shaft so as to be able to rotate and bend at the distal end portion of the insertion tube portion;
The vicinity of the rear end is pivotally supported in the vicinity of the rear end of the first jaw so as to be rotatable in the direction of the first jaw by the second support shaft, and rotates in the closing direction or the opening direction with respect to the first jaw. A second jaw that performs a gripping operation with the first jaw,
Between the operation part and the jaw part,
An opening / closing operation rod that is inserted into the insertion tube portion so as to move in the X-axis direction or rotate around the X-axis, and performs an opening / closing operation of the jaw portion;
At an arbitrary bending angle with respect to the X-axis of the jaw, the second jaw is closed in the first jaw or the anti-first jaw side by the movement of the opening / closing operation rod in the X-axis direction or the rotation around the X-axis. A jaw opening and closing drive mechanism that rotates in the opening direction to the jaw opening and closing drive mechanism,
The jaw opening / closing guide mechanism is
An urging member provided between the first jaw and the second jaw, both of which are inclined and held in an open posture;
The front end of the opening / closing operation rod extends forward in the X-axis direction, and is eccentrically arranged with respect to the X-axis so as to be able to contact the side surface of the rear end of the second jaw facing the rear end of the first jaw. An arbitrary cross-section guide member formed with a curved surface or a prismatic guide portion,
At an arbitrary bending angle with respect to the X axis of the jaw, the guide portion of the guide member slides on the side surface of the second jaw rear end portion by a forward or reverse rotation operation of the opening / closing operation rod around the X axis by a predetermined angle. A minimally invasive purse string suture that is configured to rotate the second jaw in a closing direction or an opening direction toward the first jaw by contacting and gradually pressing or releasing the side surface. device.
前記顎部は、
前記第1顎及び第2顎が、互いに対向する側にそれぞれ歯合する複数の歯部を有する櫛歯状をなし、前記第1顎及び第2顎の各歯部先端には前記縫合針カートリッジの各縫合針を案内する凹条溝が各顎の長手方向にそれぞれ延設され、
X軸に対する任意の屈曲角度における前記顎部の第1顎及び第2顎で前記生体管の切断端部を把持して当該生体管の肉壁が前記各歯部に倣って断面波状となるように重なった状態で、前記縫合糸の両端の各端がそれぞれ接続された前記一対の縫合針を前記各凹条溝に両者同時に前記挿入管部側から通過させることにより巾着縫合が施される巾着縫合機構を有する、ことを特徴とする請求項1記載の低侵襲巾着縫合デバイス。
The jaw is
The first jaw and the second jaw have a comb-like shape having a plurality of teeth that mesh with each other on opposite sides, and the suturing needle cartridge is attached to the tips of the teeth of the first jaw and the second jaw. A groove groove for guiding each suture needle is extended in the longitudinal direction of each jaw,
The cutting end portion of the living body tube is gripped by the first jaw and the second jaw of the jaw portion at an arbitrary bending angle with respect to the X axis so that the wall of the living body tube has a corrugated cross-section following each tooth portion. A purse string which is subjected to a purse string suture by passing the pair of suture needles, to which both ends of the suture thread are respectively connected, from the side of the insertion tube portion to the concave groove at the same time. The minimally invasive purse string suturing device according to claim 1, further comprising a suturing mechanism.
前記顎開閉駆動機構は、
前記操作部まで延設される前記挿入管部の後端部、又は前記挿入管部の後端部に連結する環状把手部の後端部に設けられ、前記開閉操作ロッドの後端部に連結して前記開閉操作ロッドをX軸方向移動もしくはX軸回り回転させることより前記第2顎を前記第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる顎開閉操作手段を備えている、ことを特徴とする請求項1記載の低侵襲巾着縫合デバイス。
The jaw opening / closing drive mechanism is
Provided at the rear end portion of the insertion tube portion extending to the operation portion, or at the rear end portion of the annular handle portion connected to the rear end portion of the insertion tube portion, and connected to the rear end portion of the opening / closing operation rod to the opening and closing rod the jaws open to rotate in the opening direction of the closing direction or counterclockwise first jaw side of the more the second jaw to be X-axis direction movement or X-axis rotation to the first jaw side The minimally invasive purse string suturing device according to claim 1, further comprising operating means.
前記顎開閉操作手段は、
前記挿入管部の後端部に連結する環状把手部の後端部にX軸周りの回転が拘束されてX軸方向移動可能に配置され、前記開閉操作ロッドの後端部に連結され、且つ、外周面に雄螺旋が螺刻された環状雄螺旋部材と、
前記雄螺旋に螺合する雌螺旋が螺刻された螺旋孔を有し、前記環状把手部の後端部にX軸方向移動が拘束されてX軸周りに回転可能に外嵌され、正逆回転することにより前記環状雄螺旋部材を前記開閉操作ロッドと共にX軸方向に螺進又は螺退させ、前記第2顎を前記第1顎側への閉じ方向又は反第1顎側への開き方向に回動させる回転駆動手段と、を備えている、ことを特徴とする請求項3記載の低侵襲巾着縫合デバイス。
The jaw opening / closing operation means includes
The rotation around the X axis is constrained to the rear end portion of the annular handle portion connected to the rear end portion of the insertion tube portion so as to be movable in the X axis direction, connected to the rear end portion of the opening / closing operation rod, and An annular male spiral member having a male spiral threaded on its outer peripheral surface;
It has a helical hole in which a female helix that is screwed into the male helix is screwed, and the outer end of the annular handle portion is constrained to move in the X-axis direction and is rotatably fitted around the X-axis. By rotating, the annular male spiral member is screwed or unscrewed in the X-axis direction together with the opening / closing operation rod, and the second jaw is closed in the first jaw side or opened in the anti-first jaw side. The minimally invasive purse string suturing device according to claim 3, further comprising: a rotation driving means for rotating the device.
前記操作部と顎部との間には、
前記挿入管部内部にX軸方向移動可能に挿通され、且つ、先端が前記顎部の後端に連結された屈曲操作部材と、
前記屈曲操作部材の後端部を連結してX軸方向前進又は後退させ前記顎部の後端に対する押圧又は引込動作を行うことにより、前記顎部を前記第1支軸周りに回動させてX軸に対する一方向への前記顎部の屈曲角度変更動作を操作する屈曲角度操作手段と、を備える顎部屈曲駆動機構を有する、ことを特徴とする請求項1記載の低侵襲巾着縫合デバイス。
Between the operation part and the jaw part,
A bending operation member inserted into the insertion tube portion so as to be movable in the X-axis direction and having a tip connected to a rear end of the jaw portion;
By connecting the rear end portion of the bending operation member and moving forward or backward in the X-axis direction to perform the pressing or retracting operation on the rear end of the jaw portion, the jaw portion is rotated around the first support shaft. 2. The minimally invasive purse string suturing device according to claim 1, further comprising a jaw angle bending drive mechanism including a bending angle operation unit that operates a bending angle changing operation of the jaw in one direction with respect to the X axis.
前記屈曲角度操作手段は、
前記挿入管部の後端部又は前記挿入管部に連結される環状把手部と前記屈曲操作部材の後端部との間に設けられ、内周面に雌螺旋が螺刻された螺旋孔部材及び外周面に前記螺旋孔部材に螺合する雄螺旋が螺刻された環状雄螺旋部材からなる螺旋機構部と、
前記螺旋機構部の螺旋孔部材又は環状雄螺旋部材のいずれか一方の後端部に連結され、前記螺旋機構部の他方を正逆回転することにより前記屈曲操作部材と共にX軸方向に螺進又は螺退させ、前記顎部の屈曲角度変更動作を行なう回転駆動手段と、を備えている、ことを特徴とする請求項5記載の低侵襲巾着縫合デバイス。
The bending angle operation means includes
A spiral hole member provided between a rear end portion of the insertion tube portion or an annular handle portion connected to the insertion tube portion and a rear end portion of the bending operation member, and having a female spiral threaded on an inner peripheral surface And a spiral mechanism portion comprising an annular male spiral member in which a male spiral that is screwed into the spiral hole member is threaded on the outer peripheral surface;
It is connected to the rear end portion of either the spiral hole member or the annular male spiral member of the spiral mechanism portion, and is rotated in the X-axis direction together with the bending operation member by rotating the other side of the spiral mechanism portion forward or backward. The minimally invasive purse string suturing device according to claim 5, further comprising: a rotation driving unit that is screwed and performs a bending angle changing operation of the jaw.
前記巾着縫合機構は、
細径薄肉中空管状体からなり、後端に縫合操作部が連結され、先端が尖鋭状に形成された尖鋭端を有し、前記尖鋭端近傍に縫合糸が挿通する1個又は2個の縫合糸挿通口が開設された一対の縫合針と、前記一対の縫合針が着脱可能に挿通される一対の細径薄肉中空管状部及び当該中空管状部が連通して連結される薄肉スリット状連通部からなる縫合針ケースと、を有する縫合針カートリッジと、
両端の各端が前記各縫合針の縫合糸挿通口にそれぞれ挿通され、中間部が縫合糸ケースのスリット状連通部内に収容される縫合糸と、
前記挿入管部のX軸方向後端面から先端部に亘り開設され、前記縫合針カートリッジが着脱可能に挿通される縫合針カートリッジ挿通孔と、から構成される、ことを特徴とする請求項2記載の低侵襲巾着縫合デバイス。
The purse string stitching mechanism is
One or two sutures comprising a thin hollow tubular body having a small diameter, a stitching operation portion connected to the rear end, a sharp tip formed in a sharp tip, and a suture thread inserted in the vicinity of the sharp tip A pair of suture needles having a thread insertion opening, a pair of small-diameter thin-walled hollow tubular parts through which the pair of suture needles are detachably inserted, and a thin-slit-like communication part to which the hollow tubular parts are connected in communication A suturing needle case comprising: a suturing needle cartridge;
Each end of the opposite ends thereof respectively inserted the suture insertion hole of the suture needle, the suture intermediate portion is housed in the slit Joren communication portion of the sewing doubling case,
3. A suture needle cartridge insertion hole that is opened from the rear end surface in the X-axis direction of the insertion tube portion to the distal end portion, and through which the suture needle cartridge is detachably inserted. Minimally invasive purse string suture device.
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