JPH067366A - Gripping forceps - Google Patents
Gripping forcepsInfo
- Publication number
- JPH067366A JPH067366A JP5048245A JP4824593A JPH067366A JP H067366 A JPH067366 A JP H067366A JP 5048245 A JP5048245 A JP 5048245A JP 4824593 A JP4824593 A JP 4824593A JP H067366 A JPH067366 A JP H067366A
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- operation handle
- shaft
- forceps
- stopper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Surgical Instruments (AREA)
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、腹腔鏡下での
手術（ラパロスコピックサージャリー）などにおいて、
生体組織等を把持する際に使用される把持鉗子に関す
る。BACKGROUND OF THE INVENTION The present invention is applicable to, for example, laparoscopic surgery (laparoscopic surgery).
The present invention relates to grasping forceps used when grasping a biological tissue or the like.
【０００２】[0002]
【従来の技術】従来、この種の把持鉗子として、例えば
実開平１−１３３９０７号公報に示されるものがある。
これは、トラカール装置の外套管を通して腹腔内に挿入
されるべきシースの先端に一対の把持部材を開閉自在に
設け、シースの基端部にはその一対の把持部材を開閉操
作する操作部を設けている。シース内には操作軸が挿通
されており、この操作軸の先端はリンク機構を介して一
対の把持部材に連結される。また、操作部は、シースの
基端部分に固定された固定操作ハンドルと、この固定操
作ハンドルに対して止めねじピンにより回動自在に取付
けられた可動操作ハンドルとで構成されている。2. Description of the Related Art Conventionally, as this type of grasping forceps, there is one shown in Japanese Utility Model Laid-Open No. 1-133907.
In this, a pair of gripping members are provided at the distal end of a sheath to be inserted into the abdominal cavity through an outer tube of a trocar device so as to be openable and closable, and an operation unit for opening and closing the pair of gripping members is provided at a proximal end of the sheath. ing. An operation shaft is inserted through the sheath, and the tip of the operation shaft is connected to a pair of gripping members via a link mechanism. Further, the operation portion is composed of a fixed operation handle fixed to the proximal end portion of the sheath and a movable operation handle rotatably attached to the fixed operation handle by a setscrew pin.
【０００３】前記操作軸の後端は、可動操作ハンドルの
回動作用端に連結される。したがって、可動操作ハンド
ルを止めねじピンを支点として回動操作すると、操作軸
が前後方向にスライドし、リンク機構を介して一対の把
持部材を開閉する。このように操作部における遠隔操作
によって一対の把持部材を開閉し、体腔内の生体組織、
例えば胆嚢等の臓器を把持したり解除したりする。The rear end of the operating shaft is connected to the rotating end of the movable operating handle. Therefore, when the movable operation handle is rotated about the set screw pin as a fulcrum, the operation shaft slides in the front-rear direction to open and close the pair of gripping members via the link mechanism. In this way, the pair of gripping members are opened and closed by remote operation in the operation unit, and the living tissue in the body cavity,
For example, it grasps or releases an organ such as the gallbladder.
【０００４】[0004]
【発明が解決しようとする課題】ところで、特に、この
ような把持鉗子にあっては、操作部の可動操作ハンドル
を回動する際、必要以上に回動して大きな力で先端把持
部を閉動作すると、臓器を傷付ける虞がある。特に、腹
腔鏡下の手術では、胆嚢等の臓器を把持鉗子で把持しな
がら他の器具で処置を行なう場合が多い。このような場
合には術者の注意が処置を行なっている器具に集中する
傾向が強いため、把持鉗子の可動操作ハンドルを誤って
強く握り締めてしまっても、安全なように対策を施して
おかなければならない。By the way, in particular, in such grasping forceps, when the movable operation handle of the operation portion is rotated, it is rotated more than necessary to close the tip grasping portion with a large force. When operated, it may damage the organs. In particular, in laparoscopic surgery, treatment is often performed with other instruments while grasping an organ such as the gallbladder with grasping forceps. In such a case, the surgeon's attention tends to concentrate on the instrument being treated, so measures should be taken to ensure safety even if the movable operation handle of the grasping forceps is accidentally squeezed tightly. There must be.
【０００５】そこで、前述した従来のものにあっては、
固定操作ハンドルの、可動操作ハンドルに対向する面
に、ストッパピンを一体に突出して設け、可動操作ハン
ドルを閉じる際に大きな力が加わると、その可動操作ハ
ンドルがストッパピンの突出先端に当接して、把持鉗子
に必要以上の把持力が加わることを阻止していた。Therefore, in the above-mentioned conventional device,
A stopper pin is integrally provided on the surface of the fixed operation handle that faces the movable operation handle so that when a large force is applied when the movable operation handle is closed, the movable operation handle abuts the protruding tip of the stopper pin. However, the gripping forceps are prevented from being applied with an excessive gripping force.
【０００６】しかしながら、このような従来の把持鉗子
では、前記ストッパピンが固定操作ハンドルの部分から
突出しているため、操作上、邪魔になることがある。ま
た、ストッパピンは先端把持部を閉成する際に有効に作
用するが、開放する際には何らの作用もなさない。However, in such a conventional grasping forceps, since the stopper pin projects from the portion of the fixed operation handle, it may be an obstacle in operation. Also, the stopper pin effectively acts when closing the tip grip portion, but does not have any action when opening the tip grip portion.
【０００７】また、ストッパピンの突出量は固定されて
いるから、可動操作ハンドルの当接位置が常に一定とな
ってしまう。しかるに、実際には、把持対象となる生態
組織の形態は種々あって、ストッパ位置を調整可能とし
たほうが、使用上、便利であることが多い。Further, since the protrusion amount of the stopper pin is fixed, the contact position of the movable operation handle is always constant. However, in reality, there are various forms of the ecological tissue to be grasped, and it is often convenient in use to be able to adjust the stopper position.
【０００８】本発明は、上述した問題点に鑑みてなされ
たもので、その目的とするところは、把持操作上の障害
とならず、可動操作ハンドルの開閉両方向に対する有効
なストッパ作用をなし、しかも、ストッパ位置を調整可
能とした把持鉗子を提供しようとするものである。The present invention has been made in view of the above-mentioned problems, and an object thereof is to prevent an obstacle in gripping operation, to provide an effective stopper action in both directions of opening and closing the movable operation handle, and An object of the present invention is to provide a grasping forceps whose stopper position can be adjusted.
【０００９】[0009]
【課題を解決するための手段】前記課題を解決するため
に本発明に係る把持鉗子は、先端部に開閉自在な先端把
持部を設けたシースと、前記シースの基端部に設けられ
た固定操作ハンドルと、この固定操作ハンドルに対して
回動自在に連結される可動操作ハンドルと、この可動操
作ハンドルの回動作用端に一端が連結されかつ他端側が
前記固定操作ハンドルおよびシース内に進退自在に挿入
されるとともに他端が前記先端把持部に連結され前記可
動操作ハンドルの回動操作に伴う進退移動により前記先
端把持部を開閉操作する操作軸と、前記操作軸が挿通さ
れる固定操作ハンドルの部位に設けられ前記操作軸の前
進終端を規制する第１のストッパ部と、前記操作軸が挿
通される固定操作ハンドルの部位に設けられ前記操作軸
の後進終端を規制する第２のストッパ部とを具備し、第
１のストッパ部および第２のストッパ部の少なくとも一
方のストッパ部は、前記操作軸の移動終端位置を変更調
節自在な構成とした。Means for Solving the Problems In order to solve the above problems, a grasping forceps according to the present invention is a sheath having a distal end portion provided with an openable and closable distal end grasping portion, and a fixing provided at a proximal end portion of the sheath. An operation handle, a movable operation handle that is rotatably connected to the fixed operation handle, one end is connected to a rotation operation end of the movable operation handle, and the other end side is advanced and retracted into the fixed operation handle and the sheath. An operation shaft that is freely inserted and the other end is connected to the tip grip portion, and an operation shaft that opens and closes the tip grip portion by advancing and retracting movement accompanying the rotation operation of the movable operation handle, and a fixing operation through which the operation shaft is inserted. A first stopper portion provided at a handle portion for restricting a forward end of the operation shaft, and a rearward end end of the operation shaft provided at a fixed operation handle through which the operation shaft is inserted. That the second; and a stopper portion, at least one of the stopper portion of the first stopper portion and the second stopper section has a modified adjusted freely configure a moving end position of the operating shaft.
【００１０】[0010]
【作用】本発明は、第１のストッパ部および第２のスト
ッパ部を、操作軸が挿通する固定操作ハンドルの部位に
設けたから、各ストッパ部が把持鉗子の操作を邪魔する
状態になり難い。また、前記操作軸の移動終端位置を変
更調節できる。According to the present invention, since the first stopper portion and the second stopper portion are provided at the portion of the fixed operation handle through which the operation shaft is inserted, it is difficult for each stopper portion to interfere with the operation of the grasping forceps. Also, the movement end position of the operation shaft can be changed and adjusted.
【００１１】[0011]
【実施例】図１および図２は本発明の第１の実施例を示
すものである。図１はその把持鉗子１の要部の構成を示
し、図２はその把持鉗子１の全体的な構成を示す。1 and 2 show a first embodiment of the present invention. FIG. 1 shows a configuration of a main part of the grasping forceps 1, and FIG. 2 shows an overall configuration of the grasping forceps 1.
【００１２】この把持鉗子１は、トラカール外套管等を
通して体腔内に挿入される挿入部２と、この挿入部２の
先端に設けられた鉗子部（先端把持部）３および挿入部
２の基端部に設けられた操作部４とで構成される。The grasping forceps 1 includes an inserting portion 2 which is inserted into a body cavity through a trocar outer tube, a forceps portion (tip grasping portion) 3 provided at a tip of the inserting portion 2 and a base end of the inserting portion 2. And an operation section 4 provided in the section.
【００１３】前記挿入部２は、ステンレス鋼等の金属材
料からなる中空管状のシース２４で形成されており、こ
のシース２４の外面は絶縁材料、例えばフッ素系の樹脂
からなる絶縁チューブ２５で覆われている。The insertion portion 2 is formed of a hollow tubular sheath 24 made of a metallic material such as stainless steel, and the outer surface of the sheath 24 is covered with an insulating tube 25 made of an insulating material, for example, fluorine resin. ing.
【００１４】前記鉗子部３は、体腔内の臓器、例えば胆
嚢等を把持するためのものであり、シース２４の先端部
に設けられたリンク機構２６を介して回動自在に支持さ
れた一対の鉗子部材（把持部材）２７ａ，２７ｂで形成
されている。The forceps section 3 is for holding an organ in a body cavity, such as a gallbladder, and is rotatably supported via a link mechanism 26 provided at the distal end of the sheath 24. The forceps members (grip members) 27a and 27b are formed.
【００１５】前記操作部４は、鉗子部材２７ａ，２７ｂ
を開閉操作するためのものであり、前記シース２４の基
端部に固定された固定操作ハンドル２８と、この固定操
作ハンドル２８に止めねじピン２９により回動自在に取
り付けられた可動操作ハンドル３０とで形成されてい
る。The operation section 4 includes forceps members 27a and 27b.
A fixed operation handle 28 fixed to the proximal end portion of the sheath 24, and a movable operation handle 30 rotatably attached to the fixed operation handle 28 by a setscrew pin 29. Is formed by.
【００１６】図２（Ｂ）に示すように、前記止めねじピ
ン２９には、ワッシャ３１が嵌め込まれ、さらに、止め
ねじピン２９の頭部には、ゴムやプラスチックなどの電
気的絶縁材料で作られたキャップ３２が、接着やスナッ
プフィット等の手段で装着されている。As shown in FIG. 2B, a washer 31 is fitted in the set screw pin 29, and the head of the set screw pin 29 is made of an electrically insulating material such as rubber or plastic. The cap 32 is attached by means such as adhesion or snap fit.
【００１７】再び、図１（Ａ）および図２（Ａ）に示す
ように、前記把持鉗子１は、鉗子部３と操作部４とを連
結する操作軸１０を備えている。この操作軸１０は、前
記シース２４内に進退自在に挿入されており、その操作
軸１０の先端は、連結部材３４に一体的に連結され、さ
らに、この連結部材３４を介して前記リンク機構２６に
連結されている。前記連結部材３４の周面の一部には、
Ｏリング３５が被嵌されている。このＯリング３５は前
記連結部材３４の周面と前記シース２４の内面との間に
介在して、把持鉗子１の挿入部２の先端側からその内部
に対する気密および水密を保持するようになっている。Again, as shown in FIGS. 1 (A) and 2 (A), the grasping forceps 1 has an operating shaft 10 for connecting the forceps portion 3 and the operating portion 4. The operating shaft 10 is inserted into the sheath 24 so as to be able to move back and forth, and the tip of the operating shaft 10 is integrally connected to a connecting member 34, and the link mechanism 26 is connected via the connecting member 34. Are linked to. On a part of the peripheral surface of the connecting member 34,
The O-ring 35 is fitted. The O-ring 35 is interposed between the peripheral surface of the connecting member 34 and the inner surface of the sheath 24 so as to maintain airtightness and watertightness from the distal end side of the insertion portion 2 of the grasping forceps 1 to the inside thereof. There is.
【００１８】一方、図１（Ａ）に拡大して示すように、
前記固定操作ハンドル２８の上部には、その先端側か
ら、前記シース２４を絶縁チューブ２５を介して嵌着す
る挿入部案内孔３６と、この挿入部案内孔３６よりも直
径の小さいロッド収納孔３７および、このロッド収納孔
３７より直径の小さい貫通孔３８が一直線上で連設され
ている。On the other hand, as shown enlarged in FIG.
An insertion portion guide hole 36, into which the sheath 24 is fitted via an insulating tube 25, and a rod storage hole 37 having a diameter smaller than the insertion portion guide hole 36 are provided on the upper portion of the fixing operation handle 28 from the distal end side thereof. Further, a through hole 38 having a diameter smaller than that of the rod housing hole 37 is continuously provided on a straight line.
【００１９】前記挿入部案内孔３６内において、シース
２４の端部には電気的絶縁チューブ２５が手前側へ抜け
るのを防止するための突当てパイプ３９が嵌め込まれて
いる。この突当てパイプ３９の後端部３９ａは、シース
２４の後端面に係合し、かつ、ロッド収納孔３７よりも
小さい径の内周面を形成した鍔状に形成されている。In the insertion portion guide hole 36, an abutting pipe 39 for preventing the electrically insulating tube 25 from coming out toward the front side is fitted into the end portion of the sheath 24. The rear end portion 39 a of the butting pipe 39 is formed in a brim shape that engages with the rear end surface of the sheath 24 and has an inner peripheral surface having a smaller diameter than the rod housing hole 37.
【００２０】前記操作軸１０はその軸本体３３の基端部
が、シース２４の端部から突出し、さらに、ロッド収納
孔３７と貫通孔３８を介して固定操作ハンドル２８から
突出する長さを有する。The operation shaft 10 has such a length that the base end portion of the shaft body 33 thereof protrudes from the end portion of the sheath 24 and further protrudes from the fixed operation handle 28 via the rod housing hole 37 and the through hole 38. .
【００２１】この軸本体３３の基端部には連結ロッド４
１が連結されている。軸本体３３の基端部外周にはおね
じ４０が形成されており、また、連結ロッド４１にはそ
の中心軸に沿ってめねじ４２が形成されている。そし
て、軸本体３３のおねじ４０を連結ロッド４１のめねじ
４２にねじ込んで螺合することにより、軸本体３３と連
結ロッド４１は一直線に連結されて操作軸１０を構成す
る。A connecting rod 4 is provided at the base end of the shaft body 33.
1 is connected. A male screw 40 is formed on the outer periphery of the base end portion of the shaft body 33, and a female screw 42 is formed on the connecting rod 41 along the central axis thereof. Then, the male screw 40 of the shaft body 33 is screwed into the female screw 42 of the connecting rod 41 and screwed together, whereby the shaft body 33 and the connecting rod 41 are connected in a straight line to form the operating shaft 10.
【００２２】したがって、操作軸１０の軸本体３３と連
結ロッド４１とは一体化されて一緒に進退移動する。ま
た、連結ロッド４１を周方向に回転操作することによ
り、前記おねじ４０とめねじ４２の螺合関係により、両
者の軸方向の相対的な位置関係が変わり、操作軸１０の
軸本体３３に対する連結ロッド４１の位置をその軸方向
に沿って進退変更できるように構成されている。Therefore, the shaft body 33 of the operating shaft 10 and the connecting rod 41 are integrated and move forward and backward together. Further, by rotationally operating the connecting rod 41 in the circumferential direction, the relative positional relationship between the male screw 40 and the female screw 42 in the axial direction is changed, and the operating shaft 10 is connected to the shaft body 33. The position of the rod 41 can be changed back and forth along the axial direction.
【００２３】前記連結ロッド４１は、先端側から後端側
へ順次、大径部４１ａ、細径部４１ｂおよび球状部４１
ｃが一体に連設されて形成される。前記大径部４１ａは
ロッド収納孔３７に遊嵌され、前記細径部４１ｂは貫通
孔３８に遊嵌される。この連結ロッド４１が先端側向き
で前進した状態で、大径部４１ａの先端面が前記突当て
パイプ３９の後端部３９ａに当接することになり、これ
らで、前記操作軸１０の前進終端を規制する第１のスト
ッパ部１１を構成している。The connecting rod 41 has a large-diameter portion 41a, a small-diameter portion 41b, and a spherical portion 41 in order from the front end side to the rear end side.
c are integrally formed and continuously formed. The large diameter portion 41a is loosely fitted in the rod housing hole 37, and the small diameter portion 41b is loosely fitted in the through hole 38. In the state where the connecting rod 41 is advanced toward the tip side, the tip surface of the large diameter portion 41a comes into contact with the rear end portion 39a of the butting pipe 39, and the forward end of the operating shaft 10 is thereby fixed. It constitutes a first stopper portion 11 for regulating.
【００２４】また、連結ロッド４１が後端方向へ進行し
た状態で、この大径部４１ａと細径部４１ｂとの境であ
る段差が、前記ロッド収納孔３７と貫通孔３８とのなす
段差に当接することとなり、これらで、前記操作軸１０
の後進終端を規制する第２のストッパ部１２を構成して
いる。Further, when the connecting rod 41 is advanced toward the rear end, the step which is the boundary between the large diameter portion 41a and the small diameter portion 41b becomes the step formed between the rod receiving hole 37 and the through hole 38. They come into contact with each other, and with these, the operation shaft 10
A second stopper portion 12 that regulates the trailing end of the vehicle is formed.
【００２５】すなわち、前記第１のストッパ部１１は連
結ロッド４１の前進終端を規制し、前記第２のストッパ
部１２は連結ロッド４１の後進終端を規制する。そし
て、操作軸１０の軸本体３３に対して連結ロッド４１を
周方向に回転操作することにより、前記おねじ４０とめ
ねじ４２の螺合関係により、両者の軸方向の相対的な位
置関係が変わり、操作軸１０に対する連結ロッド４１の
位置をその軸方向に沿って進退変位することで、前記操
作軸１０の前後の移動終端位置を変更調節できるように
なっている。That is, the first stopper portion 11 regulates the forward end of the connecting rod 41, and the second stopper portion 12 regulates the backward end of the connecting rod 41. By rotating the connecting rod 41 in the circumferential direction with respect to the shaft body 33 of the operation shaft 10, the relative positional relationship in the axial direction between the male screw 40 and the female screw 42 changes due to the screwing relationship. By moving the position of the connecting rod 41 with respect to the operating shaft 10 forward and backward along the axial direction, the front and rear movement end positions of the operating shaft 10 can be changed and adjusted.
【００２６】一方、前記大径部４１ａの周面一部にはＯ
リング４４を被嵌し、このＯリング４４はロッド収納孔
３７の内周面に密接する。前記細径部４１ｂは固定操作
ハンドル２８の後端面から後方へ突き出している。この
細径部４１ｂの周面は、例えばフッ素樹脂材からなる熱
収縮チューブ４５で被覆されている。On the other hand, O is formed on a part of the peripheral surface of the large diameter portion 41a.
The ring 44 is fitted, and the O-ring 44 comes into close contact with the inner peripheral surface of the rod housing hole 37. The small diameter portion 41b projects rearward from the rear end surface of the fixed operation handle 28. The peripheral surface of the small diameter portion 41b is covered with a heat shrinkable tube 45 made of, for example, a fluororesin material.
【００２７】図１（Ｂ）で拡大して示すように、可動操
作ハンドル３０の操作端における、固定操作ハンドル２
８に対向する壁面部には、上下方向に沿って長い係合溝
４６が形成されている。そして、この係合溝４６内には
前記球状部４１ｃが嵌め込まれて係合されている。した
がって、止めねじピン２９を支点として、可動操作ハン
ドル３０を回動操作すれば、係合溝４６に対して球状部
４１ｃが係合した状態を保持しながら摺動し、操作軸１
０を前後方向に移動する。その結果、軸本体３３と連結
ロッド４１からなる操作軸１０は一体に進退駆動される
こととなる。As shown enlarged in FIG. 1B, the fixed operation handle 2 is provided at the operation end of the movable operation handle 30.
A long engagement groove 46 is formed in the wall surface portion facing 8 in the vertical direction. The spherical portion 41c is fitted and engaged in the engagement groove 46. Therefore, when the movable operation handle 30 is rotated around the set screw pin 29 as a fulcrum, the movable shaft 30 slides while maintaining the state in which the spherical portion 41c is engaged with the engagement groove 46, and the operation shaft 1
Move 0 back and forth. As a result, the operating shaft 10 including the shaft main body 33 and the connecting rod 41 is integrally driven back and forth.
【００２８】前記突当てパイプ３９の周壁の一部には透
孔４７が設けられている。さらに、透孔４７と対向する
シース２４の周壁部位には、断面Ｖ字状の穴４８が設け
られている。また、前記透孔４７と対向する固定操作ハ
ンドル２８の部位には、ねじ孔４９が設けられ、ここに
電極ピン５０が螺着される。A through hole 47 is formed in a part of the peripheral wall of the butting pipe 39. Further, a hole 48 having a V-shaped cross section is provided in the peripheral wall portion of the sheath 24 facing the through hole 47. Further, a screw hole 49 is provided in a portion of the fixed operation handle 28 facing the through hole 47, and an electrode pin 50 is screwed into the screw hole 49.
【００２９】前記電極ピン５０の先端は円錐状に形成さ
れ、前記突当てパイプ３９の透孔４７に挿入されるとと
もに、シース２４の穴４８に挿入して係止される。この
電極ピン５０は、図示しない高周波電源からの高周波電
流を伝達するコードを接続するためのものであり、ステ
ンレス材等の金属材で形成される。The tip of the electrode pin 50 is formed in a conical shape, and is inserted into the through hole 47 of the butting pipe 39 and is inserted into the hole 48 of the sheath 24 and locked. The electrode pin 50 is for connecting a cord that transmits a high-frequency current from a high-frequency power source (not shown), and is made of a metal material such as a stainless material.
【００３０】次に、このようにして構成される把持鉗子
１の作用について説明する。まず、固定操作ハンドル２
８に対する可動操作ハンドル３０の開閉操作により、操
作軸１０が進退操作されると、リンク機構２６が作用し
て鉗子部３の鉗子部材２７ａ，２７ｂを開閉する。Next, the operation of the gripping forceps 1 thus constructed will be described. First, the fixed operation handle 2
When the movable shaft 30 is opened and closed to move the operation shaft 10 forward and backward, the link mechanism 26 acts to open and close the forceps members 27a and 27b of the forceps part 3.
【００３１】具体的には、可動操作ハンドル３０を、止
めねじピン２９を支点として、図中反時計方向、すなわ
ち、固定操作ハンドル２８に対して開く方向に回動する
と、操作軸１０が前方へスライドし、リンク機構２６を
介して、鉗子部３の鉗子部材２７ａ，２７ｂを開く。こ
の状態で、鉗子部３を体腔内の把持すべき生体組織に対
向させる。Specifically, when the movable operation handle 30 is rotated in the counterclockwise direction in the figure, that is, in the direction of opening with respect to the fixed operation handle 28, with the set screw pin 29 as a fulcrum, the operation shaft 10 moves forward. By sliding, the forceps members 27a and 27b of the forceps part 3 are opened via the link mechanism 26. In this state, the forceps part 3 is made to face the living tissue to be grasped in the body cavity.
【００３２】ついで、可動操作ハンドル３０を図中時計
方向、すなわち、固定操作ハンドル２８に対して閉じる
方向に回動すると、操作軸１０が後方へスライドする。
このため、リンク機構２６は鉗子部材２７ａ，２７ｂを
閉成させ、したがって、生体組織を把持できる。Then, when the movable operation handle 30 is rotated clockwise in the drawing, that is, in the direction in which it is closed with respect to the fixed operation handle 28, the operation shaft 10 slides backward.
Therefore, the link mechanism 26 closes the forceps members 27a and 27b, and thus can grasp the living tissue.
【００３３】なお、予め、可動操作ハンドル３０を操作
して、鉗子部材２７ａ，２７ｂが必要以上に力の入らな
い理想の閉成状態のとき、操作軸１０の連結ロッド４１
を軸本体３３に対して螺動し、連結ロッド４１が第２の
ストッパ部１２に当る位置となるように調整する。Incidentally, when the movable operation handle 30 is operated in advance and the forceps members 27a and 27b are in an ideal closed state in which an excessive force is not applied, the connecting rod 41 of the operation shaft 10 is used.
Is screwed with respect to the shaft body 33, and the connecting rod 41 is adjusted so as to come into a position where it abuts on the second stopper portion 12.
【００３４】このようにしておけば、鉗子部材２７ａ，
２７ｂの閉成の際、可動操作ハンドル３０を必要以上に
強く回動操作するようなことがあっても、第２のストッ
パ部１２が連結ロッド４１の後進終端、つまり、操作軸
１０の後進終端を規制するので、鉗子部材２７ａ，２７
ｂに極端な力が加わることがなく、臓器を傷付けること
を防止できる。また、鉗子部３の破損を防止できる。By doing so, the forceps members 27a,
Even when the movable operation handle 30 is rotated more strongly than necessary at the time of closing 27b, the second stopper portion 12 causes the backward end of the connecting rod 41, that is, the backward end of the operating shaft 10. The forceps members 27a, 27
It is possible to prevent damage to an organ without applying an extreme force to b. Further, the forceps portion 3 can be prevented from being damaged.
【００３５】また、可動操作ハンドル３０を開く方向に
回動操作したときには、連結ロッド４１が前進して、最
終的に第１のストッパ部１１が作用する。つまり、連結
ロッド４１の前進終端が規制されるとともに鉗子部材２
７ａ，２７ｂの開き角度が規制される。鉗子部材２７
ａ，２７ｂの開放時に、たとえ必要以上の大きな力で可
動操作ハンドル３０を回動操作するようなことがあって
も、鉗子部３に必要以上の力がかかることがなく、この
破損を防止できる。また、鉗子部３を必要以上に大きく
開くことがない。When the movable operation handle 30 is rotated in the opening direction, the connecting rod 41 moves forward and finally the first stopper portion 11 acts. That is, the forward end of the connecting rod 41 is restricted and the forceps member 2
The opening angle of 7a and 27b is regulated. Forceps member 27
Even when the movable operation handle 30 is rotated with a larger force than necessary when the a and 27b are opened, the forceps portion 3 is not subjected to an unnecessary force, and this damage can be prevented. . In addition, the forceps 3 is not opened more than necessary.
【００３６】なお、この鉗子部３の開き量を調整する場
合には、前記操作軸１０の連結ロッド４１を軸本体３３
に対して螺動し、この連結ロッド４１の位置を変更す
る。例えば連結ロッド４１を前方へ移動すると、鉗子部
材２７ａ，２７ｂ相互の開き角度が小さくなる。逆に、
連結ロッド４１を後方である手前側に移動させると、鉗
子部材２７ａ，２７ｂ相互の開き角度を大きくできる。
このように、把持鉗子１は、把持すべき生体組織に対応
した最適の開き角度に調整可能である。When adjusting the opening amount of the forceps portion 3, the connecting rod 41 of the operating shaft 10 is connected to the shaft body 33.
The connecting rod 41 is screwed to change the position of the connecting rod 41. For example, when the connecting rod 41 is moved forward, the opening angle between the forceps members 27a and 27b becomes smaller. vice versa,
When the connecting rod 41 is moved to the rear side, that is, the rear side, the opening angle between the forceps members 27a and 27b can be increased.
In this way, the grasping forceps 1 can be adjusted to the optimum opening angle corresponding to the living tissue to be grasped.
【００３７】前記連結ロッド４１の大径部４１ａにＯリ
ング４４を被嵌し、これをロッド収納孔３７の内周面に
密接させているので、操作部４の内部に対する気密およ
び水密を保持できる。Since the large diameter portion 41a of the connecting rod 41 is fitted with the O-ring 44 and is brought into close contact with the inner peripheral surface of the rod accommodating hole 37, the airtightness and watertightness of the inside of the operating portion 4 can be maintained. .
【００３８】前記操作部４を操作すると、連結ロッド４
１の特に細径部４１ｂが固定操作ハンドル２８と可動操
作ハンドル３０との間から露出するが、ここを熱収縮チ
ューブ４５で被覆したので、把持鉗子１に高周波電流を
流した状態で、たとえ接触するようなことがあっても、
やけど等の事故発生がない。When the operating portion 4 is operated, the connecting rod 4
The particularly small diameter portion 41b of 1 is exposed from between the fixed operation handle 28 and the movable operation handle 30, but since it is covered with the heat-shrinkable tube 45, even if a high-frequency current is applied to the grasping forceps 1, even if it makes contact with the grasping forceps 1. Even if you do
No accident such as burns.
【００３９】また、図２（Ｂ）に示すように、止めねじ
ピン２９の取付けにあたっては、たとえばマイナスドラ
イバで止めねじピン２９を固定操作ハンドル２８に螺挿
し、ワッシャ３１端面に当接するまで締結してから、こ
の頭部に絶縁キャップ３２を嵌め込む。Further, as shown in FIG. 2 (B), when the set screw pin 29 is attached, the set screw pin 29 is screwed into the fixed operation handle 28 with, for example, a flat-blade screwdriver and fastened until it comes into contact with the end face of the washer 31. Then, the insulating cap 32 is fitted into this head.
【００４０】このような止めねじピン２９の螺挿時に、
極めて強い力で締め付けても、止めねじピン２９の頭部
には直接絶縁塗層を形成していないので、この絶縁塗層
の剥離を心配せずにすむ。しかも、頭部に絶縁キャップ
３２を被着してあるので、確実な絶縁効果を保持でき
る。When the set screw pin 29 is screwed in,
Even if it is tightened with an extremely strong force, the insulating coating layer is not directly formed on the head of the set screw pin 29, so that there is no need to worry about peeling of the insulating coating layer. Moreover, since the head is covered with the insulating cap 32, a reliable insulating effect can be maintained.
【００４１】なお、前記第１の実施例では、連結ロッド
４１の細径部４１ｂと球状部４１ｃを一体に連設した
が、これに限定されるものではなく、互いに別体の細径
部４１ｂと球状部４１ｃにして、その細径部４１ｂを球
状部４１ｃにねじ込む、ねじ連結式の別体構造としても
よい。In the first embodiment, the small-diameter portion 41b and the spherical portion 41c of the connecting rod 41 are integrally connected, but the present invention is not limited to this, and the small-diameter portion 41b is a separate body. Alternatively, the small diameter portion 41b may be screwed into the spherical portion 41c to form a spherical portion 41c and a separate structure of screw connection type.
【００４２】また、前記実施例においては、挿入部２と
鉗子部３とを直線状に配置する構成としたが、これに限
定されるものではなく、図３や図４に示すような他の実
施例の構成としてもよい。Further, in the above-mentioned embodiment, the insertion portion 2 and the forceps portion 3 are arranged linearly, but the present invention is not limited to this, and other arrangements as shown in FIG. 3 and FIG. The configuration of the embodiment may be adopted.
【００４３】まず、図３で示す第２の実施例のものから
説明すると、同図（Ａ），（Ｂ）に示すように、この把
持鉗子１の挿入部２は、大径挿入部５１と細径挿入部５
２とから構成されている。First, the second embodiment shown in FIG. 3 will be described. As shown in FIGS. 3A and 3B, the inserting portion 2 of the grasping forceps 1 has a large diameter inserting portion 51. Small diameter insertion part 5
2 and.
【００４４】同図（Ａ）に示すように、把持鉗子１の側
面視においては、大径挿入部５１と細径挿入部５２との
中心軸Ｏa ，Ｏb が一致する。しかしながら、同図
（Ｂ）に示すような平面視では、大径挿入部５１と細径
挿入部５２との中心軸Ｏa ，Ｏbを偏心させる。As shown in FIG. 1A, in the side view of the grasping forceps 1, the large diameter insertion portion 51 and the small diameter insertion portion 52 have the central axes Oa and Ob aligned with each other. However, in the plan view as shown in FIG. 6B, the central axes Oa and Ob of the large diameter insertion portion 51 and the small diameter insertion portion 52 are eccentric.
【００４５】さらに、前記細径挿入部５２の先端には鉗
子部３が設けられている。この鉗子部３を構成する一対
の鉗子部材５３ａ，５３ｂは、同図（Ａ）に示す側面視
において、互いに直状に形成され、かつ、上下方向に開
閉駆動されることは、前記第１の実施例のものと変わり
がない。Further, a forceps portion 3 is provided at the tip of the small diameter insertion portion 52. The pair of forceps members 53a and 53b forming the forceps part 3 are formed in a straight line shape with each other and are driven to open and close in the vertical direction in the side view shown in FIG. There is no difference from the example.
【００４６】同図（Ｂ）に示す平面視において、鉗子部
３を構成する一対の鉗子部材５３ａ，５３ｂは、湾曲形
成される。すなわち、細径挿入部５２に連結される基端
部側においては、細径挿入部５２に沿う直状であるが、
その先端に向かって徐々に曲成される。ただし、最先端
部は前記大径挿入部５１の最大外径線Ｏc を越えてはな
らない。In the plan view shown in FIG. 1B, the pair of forceps members 53a and 53b forming the forceps portion 3 are curved. That is, on the base end side connected to the small-diameter insertion portion 52, it is straight along the small-diameter insertion portion 52,
It is gradually bent toward the tip. However, the most distal end portion should not exceed the maximum outer diameter line Oc of the large diameter insertion portion 51.
【００４７】このようにして構成される把持鉗子１を、
大径挿入部５１の外径と同等の内径を有するトラカール
外套管（図示しない）に挿入する場合、鉗子部材５３
ａ，５３ｂの先端を大径挿入部５１の最大外径線Ｏc を
越えない範囲内で曲成したので、トラカール外套管に円
滑に挿入できる。The gripping forceps 1 thus constructed is
When inserting into a trocar outer tube (not shown) having an inner diameter equal to the outer diameter of the large-diameter insertion portion 51, the forceps member 53
Since the tips of a and 53b are bent within a range that does not exceed the maximum outer diameter line Oc of the large diameter insertion portion 51, they can be smoothly inserted into the trocar outer tube.
【００４８】そして、これらを腹腔内に挿入して生体組
織を把持するにあたって、鉗子部材５３ａ，５３ｂの先
端を曲成してあるので、その把持対象部位がたとえ血管
や尿管の裏面側にあっても、容易にアプローチできるこ
ととなる。When the living tissue is grasped by inserting these into the abdominal cavity, since the tips of the forceps members 53a and 53b are bent, the grasping target portion is on the back side of the blood vessel or ureter. However, it will be easy to approach.
【００４９】図４（Ａ）は本発明の第３の実施例を示
し、これは、前記同様の作用効果を得るために構成され
ている。すなわち、同図４（Ａ）に示す把持鉗子１の挿
入部２は、図３で説明したものと同様にして構成される
ので、同番号を付して新たな説明は省略する。鉗子部３
は、一対の鉗子部材５４ａ，５４ｂが、直状の基端部か
ら鈍角状に屈曲形成される。FIG. 4A shows a third embodiment of the present invention, which is configured to obtain the same effect as the above. That is, since the insertion portion 2 of the grasping forceps 1 shown in FIG. 4A is configured in the same manner as that described in FIG. 3, the same numbers are given and a new description is omitted. Forceps part 3
The pair of forceps members 54a and 54b are formed by bending an obtuse angle from a straight base end portion.
【００５０】図４（Ｂ）は本発明の第４の実施例を示
す。この把持鉗子１の挿入部２は、図３で説明したもの
と同様にして構成される。鉗子部３は、一対の鉗子部材
５５ａ，５５ｂが、直状の基端部の長さ寸法をある程度
長くとり、その先端部が曲率半径の小さい形状で湾曲さ
れる。FIG. 4B shows a fourth embodiment of the present invention. The insertion part 2 of the grasping forceps 1 is configured in the same manner as that described in FIG. In the forceps portion 3, the pair of forceps members 55a and 55b have a straight base end portion whose length is made longer to some extent, and the tip end portion thereof is curved with a shape having a small radius of curvature.
【００５１】いずれも、鉗子部材５４ａ，５４ｂ，５５
ａ，５５ｂの先端が大径挿入部５１の最大外径線Ｏc を
越えないように設定する。その結果、トラカール外套管
への挿入が円滑で、かつ血管や尿管裏面側の生体組織を
無理なく把持できることは、前述したものと同様であ
る。Any of the forceps members 54a, 54b, 55
The tips of a and 55b are set so as not to exceed the maximum outer diameter line Oc of the large diameter insertion portion 51. As a result, the trocar can be smoothly inserted into the mantle, and the blood vessel and the living tissue on the back side of the ureter can be grasped without difficulty, as in the case described above.
【００５２】図５は本発明の第５の実施例に係る把持鉗
子１の要部の構成を示す。基本的な構成は前述した第１
の実施例と略同様であるが、次の点が異なる。すなわ
ち、操作軸１０を構成する軸本体３３の基端部に設けら
れたおねじ４０と、これに螺合するための連結ロッド４
１のめねじ４２をなくした。この代わりに軸本体３３の
基端部にはその軸方向に横切って貫通する３つの貫通孔
６１ａ，６１ｂ，６１ｃを所定の間隔をおいて設ける。FIG. 5 shows the structure of the essential parts of the grasping forceps 1 according to the fifth embodiment of the present invention. The basic configuration is the above-mentioned first
The embodiment is substantially the same as the embodiment described above, except for the following points. That is, the male screw 40 provided on the base end portion of the shaft body 33 that constitutes the operation shaft 10, and the connecting rod 4 for screwing the male screw 40 thereto.
The female screw 42 of 1 was lost. Instead of this, the base end portion of the shaft body 33 is provided with three through holes 61a, 61b, 61c that penetrate the shaft body 33 in the axial direction at predetermined intervals.
【００５３】また、連結ロッド４１の細径部４１ｂに
は、皿状の端部６２ａを有した貫通孔６２が設けられて
いる。そして、この貫通孔６２と、前記貫通孔６１ａ，
６１ｂ，６１ｃのうち１つの、例えば貫通孔６１ｂとに
わたり、皿状の頭部６３ａを有したピン６３を差し込
み、軸本体３３と連結ロッド４１を連結する。Further, the small diameter portion 41b of the connecting rod 41 is provided with a through hole 62 having a dish-shaped end portion 62a. The through hole 62 and the through hole 61a,
A pin 63 having a dish-shaped head 63a is inserted over one of the 61b and 61c, for example, the through hole 61b, and the shaft body 33 and the connecting rod 41 are connected.
【００５４】これも、第１の実施例と同様の機能を有す
るが、ピン６３を貫通孔６１ａ，６１ｂ，６１ｃの中の
任意の１つに挿入することで、連結ロッド４１を軸本体
３３に対する接続位置を、その軸方向に調整して固定す
ることができる。その結果、第１のストッパ部１１およ
び第２のストッパ部１２による各終端位置を操作軸１０
の軸方向において調整可能である。This also has the same function as that of the first embodiment, but by inserting the pin 63 into any one of the through holes 61a, 61b, 61c, the connecting rod 41 is connected to the shaft body 33. The connection position can be adjusted and fixed in the axial direction. As a result, the respective end positions of the first stopper portion 11 and the second stopper portion 12 are moved to the operation shaft 10
It is adjustable in the axial direction.
【００５５】なお、この第５の実施例では貫通孔６１
ａ，６１ｂ，６１ｃを３つとしたが、第１のストッパ部
１１および第２のストッパ部１２の調整の度合いに応じ
て、任意の個数を選択してよい。In the fifth embodiment, the through hole 61
Although a, 61b, and 61c are three, any number may be selected depending on the degree of adjustment of the first stopper portion 11 and the second stopper portion 12.
【００５６】図６は、本発明の第６の実施例に係る把持
鉗子１の要部の構成を示している。この実施例の把持鉗
子１の構成は前述した第１の実施例とほぼ同様の構成で
あるが、次の点が異なる。すなわち、操作軸１０を構成
する軸本体３３の基端部に設けられたおねじ４０と、こ
れに螺合するための連結ロッド４１のめねじ４２をなく
した。その代わりに連結ロッド４１の細径部４１ｂの周
壁部にはその内孔まで貫通したねじ孔６５を設け、この
ねじ孔６５には頭部６６を有する止めねじ６７を螺合す
る。そして、この止めねじ６７の先端を軸本体３３の外
周面に押し当てることで、その軸本体３３と連結ロッド
４１とを任意の差し込み位置で固定している。FIG. 6 shows the construction of the essential parts of the grasping forceps 1 according to the sixth embodiment of the present invention. The configuration of the grasping forceps 1 of this embodiment is almost the same as that of the first embodiment described above, but the following points are different. That is, the male screw 40 provided at the base end portion of the shaft body 33 that constitutes the operation shaft 10 and the female screw 42 of the connecting rod 41 for screwing the male screw 40 are eliminated. Instead, the peripheral wall portion of the small diameter portion 41b of the connecting rod 41 is provided with a screw hole 65 penetrating to the inner hole thereof, and a set screw 67 having a head portion 66 is screwed into the screw hole 65. By pressing the tip of the set screw 67 against the outer peripheral surface of the shaft body 33, the shaft body 33 and the connecting rod 41 are fixed at an arbitrary insertion position.
【００５７】これの基本的な機能は前述した実施例と同
様であるが、止めねじ６７の螺合を緩めることで、連結
ロッド４１は軸本体３３に対してその軸方向へ移動可能
となり、この結果、第１のストッパ部１１および第２の
ストッパ部１２による各終端位置を操作軸１０の軸方向
において移動可能となる。また、所定の位置にて止めね
じ６７を締め付けて連結ロッド４１を軸本体３３に固定
することができる。これによれば、止めねじ６７の締付
け位置を任意に選択できるから、その終端位置を連続的
に選択できる。The basic function of this is the same as that of the embodiment described above, but by loosening the screw of the set screw 67, the connecting rod 41 becomes movable in the axial direction with respect to the shaft body 33. As a result, the respective end positions of the first stopper portion 11 and the second stopper portion 12 can be moved in the axial direction of the operation shaft 10. Further, the set screw 67 can be tightened at a predetermined position to fix the connecting rod 41 to the shaft body 33. According to this, since the tightening position of the set screw 67 can be arbitrarily selected, the end position thereof can be continuously selected.
【００５８】図７は、本発明の第７の実施例に係る把持
鉗子１の要部の構成を示している。この実施例の把持鉗
子１の構成は前述した第１の実施例とほぼ同様の構成で
あるが、次の点が異なる。すなわち、操作軸１０を構成
する軸本体３３の基端部に設けられたおねじ４０と、こ
れに螺合するための連結ロッド４１のめねじ４２をなく
した。その代わり、連結ロッド４１を軸方向の前後に２
体に分け、先端側の部材を第１の連結ロッド７１とし、
手元側部材を第２の連結ロッド７２とする。第１の連結
ロッド７１の手元側端部には、複数のすり割り（スリッ
ト）７３を形成することにより軸締付け部７０を形成す
る。また、第１の連結ロッド７１の中央部外周にはおね
じ７４が形成されている。FIG. 7 shows the construction of the essential parts of the grasping forceps 1 according to the seventh embodiment of the present invention. The configuration of the grasping forceps 1 of this embodiment is almost the same as that of the first embodiment described above, but the following points are different. That is, the male screw 40 provided at the base end portion of the shaft body 33 that constitutes the operation shaft 10 and the female screw 42 of the connecting rod 41 for screwing the male screw 40 are eliminated. Instead, connect the connecting rod 41 to the front and rear in the axial direction.
Divide into the body, the member on the tip side is the first connecting rod 71,
The proximal member is the second connecting rod 72. A shaft fastening portion 70 is formed by forming a plurality of slits (slits) 73 at the proximal end portion of the first connecting rod 71. A male screw 74 is formed on the outer periphery of the central portion of the first connecting rod 71.
【００５９】一方、第２の連結ロッド７２の先端側部分
の内孔には、第１の連結ロッド７１のおねじ７４をねじ
込むめねじ７５が形成されている。このめねじ７５は第
２の連結ロッド７２の中央付近まで形成され、このめね
じ７５の終端付近には、手元側に行くに従って細径化さ
れる第１のスロープ（テーパ部）７６が形成されてい
る。この第１のスロープ（テーパ部）７６は第１の連結
ロッド７１の内端外周に同じく形成した第２のスロープ
（テーパ部）７７に対向して設けられている。On the other hand, a female screw 75 into which the male screw 74 of the first connecting rod 71 is screwed is formed in the inner hole of the tip side portion of the second connecting rod 72. The female screw 75 is formed up to the vicinity of the center of the second connecting rod 72, and a first slope (tapered portion) 76 is formed near the end of the female screw 75 so that the diameter thereof becomes smaller toward the proximal side. ing. The first slope (taper portion) 76 is provided so as to face a second slope (taper portion) 77 that is also formed on the outer circumference of the inner end of the first connecting rod 71.
【００６０】しかして、これの基本的な機能は前述した
実施例と同様であるが、ここでは第１の連結ロッド７１
のおねじ７４と第２の連結ロッド７２のめねじ７５をね
じ込み、第１の連結ロッド７１に対して第２の連結ロッ
ド７２を軸方向へ移動させることで、第１のスロープ７
６が第２のスロープ７７に押し当ることによって、すり
割り７３を形成した軸締付けチャック部７０の内径が縮
小され、第１の連結ロッド７１の中央部外周を締め付け
る。このため、軸締付けチャック部７０は軸本体３３の
周面に、強く当接することとなり、これによって、第１
の連結ロッド７１は軸本体３３に固定され、第２の連結
ロッド７１も、軸本体３３に対して、固定されることと
なる。The basic function of this is the same as that of the above-mentioned embodiment, but here the first connecting rod 71 is used.
The male screw 74 and the female screw 75 of the second connecting rod 72 are screwed in, and the second connecting rod 72 is moved in the axial direction with respect to the first connecting rod 71.
By pressing 6 against the second slope 77, the inner diameter of the shaft tightening chuck portion 70 having the slit 73 is reduced, and the outer circumference of the central portion of the first connecting rod 71 is tightened. For this reason, the shaft tightening chuck part 70 comes into strong contact with the peripheral surface of the shaft body 33, whereby the first tightening chuck part 70 comes into contact.
The connecting rod 71 is fixed to the shaft body 33, and the second connecting rod 71 is also fixed to the shaft body 33.
【００６１】一方、おねじ７４とめねじ７５を逆に螺動
させて第１の連結ロッド７１に対して第２の連結ロッド
７２を手元側へ移動させれば、各スロープ７６，７７の
間の押す力が解除されることで、軸締付けチャック部７
０の、軸本体３３の周面への当接がゆるんで、第１の連
結ロッド７１および第２の連結ロッド７２が軸本体３３
の軸方向へ移動することが自在となる。On the other hand, when the male screw 74 and the female screw 75 are screwed in the opposite directions to move the second connecting rod 72 toward the hand side with respect to the first connecting rod 71, the space between the slopes 76 and 77 is reduced. By releasing the pushing force, the shaft tightening chuck 7
The contact of 0 with the peripheral surface of the shaft body 33 is loosened, and the first connecting rod 71 and the second connecting rod 72 are connected to the shaft body 33.
It is possible to freely move in the axial direction of.
【００６２】第１の連結ロッド７１と第２の連結ロッド
７２の各前端にはロッド収納孔３７の内径に近いストッ
パ用鍔部７１ａ，７２ａがそれぞれ形成されている。Ｏ
リング４４はその鍔部７１ａ，７２ａの間に設置されて
いる。Stopper flanges 71a, 72a near the inner diameter of the rod housing hole 37 are formed at the front ends of the first connecting rod 71 and the second connecting rod 72, respectively. O
The ring 44 is installed between the collar portions 71a and 72a.
【００６３】そして、軸本体３３の手元側の所定の位置
で前記操作によって、軸本体３３に対して第１の連結ロ
ッド７１および第２の連結ロッド７２の位置関係を、そ
の操作軸１０の軸方向に調整することが可能である。ま
た、ストッパ用鍔部７１ａ，７２ａの間隔も調節でき
る。その結果、第１のストッパ部１１および第２のスト
ッパ部１２による各終端位置を任意かつ個別的に設定す
ることができる。Then, the positional relationship between the first connecting rod 71 and the second connecting rod 72 with respect to the shaft main body 33 is determined by the operation at a predetermined position on the proximal side of the shaft main body 33. It is possible to adjust the direction. Also, the distance between the stopper flanges 71a and 72a can be adjusted. As a result, the respective end positions of the first stopper portion 11 and the second stopper portion 12 can be set arbitrarily and individually.
【００６４】図８は、本発明の第８の実施例に係る把持
鉗子１の要部の構成を示している。この実施例の把持鉗
子１の構成は、前述した第１の実施例とほぼ同様の構成
であるが、次の点が異なる。すなわち、連結ロッド４１
内には先端側にあいた穴８１ｄを設け、そこに、軸本体
３３の手元側端部を挿入して嵌合し、ろう付けや接着等
の固定手段で固定されている。FIG. 8 shows the construction of the essential parts of the grasping forceps 1 according to the eighth embodiment of the present invention. The configuration of the grasping forceps 1 of this embodiment is almost the same as that of the first embodiment described above, but the following points are different. That is, the connecting rod 41
A hole 81d on the tip side is provided inside, and the proximal end of the shaft body 33 is inserted and fitted therein, and is fixed by a fixing means such as brazing or adhesion.
【００６５】また、固定操作ハンドル２８の貫通孔３８
の代りに、手元側から孔８０を設け、この孔８０にはめ
ねじ８１を形成する。そして、この孔８０にはストッパ
ー用ねじ部材８２をねじ込んでいる。このストッパー用
ねじ部材８２には前記連結ロッド４１の細径部４１ｂを
通すため、その細径部４１ｂより大きい径の孔８３があ
いている。ストッパー用ねじ部材８２の先端には、固定
操作ハンドル２８のロッド収納孔３７の内部に納まる外
径を有する筒状のストッパ部８４が設けられている。Further, the through hole 38 of the fixed operating handle 28
Instead of this, a hole 80 is provided from the proximal side, and a female screw 81 is formed in this hole 80. A stopper screw member 82 is screwed into the hole 80. The stopper screw member 82 has a hole 83 having a diameter larger than that of the small diameter portion 41b in order to allow the small diameter portion 41b of the connecting rod 41 to pass therethrough. At the tip of the stopper screw member 82, a cylindrical stopper portion 84 having an outer diameter that can be accommodated in the rod storage hole 37 of the fixed operation handle 28 is provided.
【００６６】そこで、前記連結ロッド４１が後端方向へ
進行した状態で、この大径部４１ａと細径部４１ｂとの
境である段差が、ストッパー用ねじ部材８２のストッパ
部８４の先端に当接する。これにより第２のストッパ部
１２が構成される。しかして、ストッパー用ねじ部材８
２を固定操作ハンドル２８のめねじ８１に対して螺動さ
せることで、ストッパー用ねじ部材８２を、軸方向に移
動させることができる。このようにすることで、第２の
ストッパ部１２による終端位置を連続的かつ任意に調整
することが可能となる。Therefore, when the connecting rod 41 advances toward the rear end, the step which is the boundary between the large diameter portion 41a and the small diameter portion 41b contacts the tip of the stopper portion 84 of the stopper screw member 82. Contact. This constitutes the second stopper portion 12. Then, the stopper screw member 8
By screwing 2 with respect to the internal thread 81 of the fixed operation handle 28, the stopper screw member 82 can be moved in the axial direction. By doing so, it becomes possible to continuously and arbitrarily adjust the end position by the second stopper portion 12.
【００６７】図９は、本発明の第９の実施例に係る把持
鉗子１の要部の構成を示している。この実施例の把持鉗
子１の構成は前述した第１の実施例とほぼ同様の構成で
あるが、次の点が異なる。すなわち、連結ロッド４１の
先端側部分には、先端側が開口した穴９１を同軸的に設
け、そこに、軸本体３３の手元側端部を挿入して嵌合
し、ろう付けや接着等の固定手段で、固定されている。FIG. 9 shows the construction of the essential parts of the grasping forceps 1 according to the ninth embodiment of the present invention. The configuration of the grasping forceps 1 of this embodiment is almost the same as that of the first embodiment described above, but the following points are different. That is, a hole 91 having an opening on the tip side is coaxially provided on the tip side portion of the connecting rod 41, and the proximal end of the shaft body 33 is inserted and fitted therein, and fixing such as brazing or adhesion is performed. It is fixed by means.
【００６８】また、固定操作ハンドル２８の挿入部案内
孔３６の部分にはめねじ９２を設け、突当てパイプ３９
の外周にはおねじ９３を設けて、突当てパイプ３９を挿
入部案内孔３６内にねじ込んでいる。突当てパイプ３９
の後端部は手元側へ延長され、固定操作ハンドル２８の
ロッド収納孔３７に収納される外径を有したストッパ部
３９ｂを形成している。Further, a female screw 92 is provided in the insertion guide hole 36 of the fixed operation handle 28 so that the butting pipe 39
A male screw 93 is provided on the outer periphery of the butting pipe 39 and is screwed into the insertion portion guide hole 36. Butt pipe 39
The rear end portion is extended toward the hand side and forms a stopper portion 39b having an outer diameter which is housed in the rod housing hole 37 of the fixed operation handle 28.
【００６９】連結ロッド４１が先端部方向へ前進した状
態で、大径部４１ａの端面が上記突当てパイプ３９のス
トッパ部３９ｂに当接することになり、これによって、
第１のストッパ部１１を構成している。With the connecting rod 41 advanced toward the tip end, the end face of the large diameter portion 41a comes into contact with the stopper portion 39b of the abutting pipe 39, whereby the
It constitutes the first stopper portion 11.
【００７０】しかして、これの基本的な機能は前述した
実施例と同様であるが、突当てパイプ３９を固定操作ハ
ンドル２８のめねじ９２に対して螺動させることで、突
当てパイプ３９とシース２４と絶縁チューブ２５と操作
軸１０とは、一体で前後移動する。このようにすること
で、第２のストッパ部１２の終端位置を前後に移動調整
することが可能となる。なお、このとき、第１のストッ
パ部１１の位置は変わらない。Although the basic function of this is the same as that of the above-mentioned embodiment, by screwing the butting pipe 39 with respect to the female screw 92 of the fixed operation handle 28, the butting pipe 39 and The sheath 24, the insulating tube 25, and the operating shaft 10 move back and forth as a unit. By doing so, it becomes possible to move and adjust the terminal position of the second stopper portion 12 back and forth. At this time, the position of the first stopper portion 11 does not change.
【００７１】図１０は本発明の第１０の実施例に係る把
持鉗子１の要部の構成を示している。この実施例の構成
は、前述した実施例とほぼ同様であるが、操作軸１０を
構成する軸本体３３と連結ロッド４１の接続構造につい
ては前述した第８，９の実施例のものと同様にしてい
る。FIG. 10 shows the construction of the essential parts of the grasping forceps 1 according to the tenth embodiment of the present invention. The structure of this embodiment is almost the same as that of the above-mentioned embodiment, but the connecting structure of the shaft body 33 and the connecting rod 41 constituting the operating shaft 10 is the same as that of the above-mentioned eighth and ninth embodiments. ing.
【００７２】また、突当てパイプ３９の内面には、めね
じ９５を設け、一方、シース２４の手元側端部付近の外
周には、おねじ９６を設ける。突当てパイプ３９のめね
じ９５にシース２４のおねじ９６をねじ込んで、その両
者を連結している。A female screw 95 is provided on the inner surface of the butting pipe 39, while a male screw 96 is provided on the outer periphery of the sheath 24 near the proximal end. The external thread 96 of the sheath 24 is screwed into the internal thread 95 of the butting pipe 39 to connect them.
【００７３】これの基本的な機能は前述した実施例と同
様であるが、シース２４を突当てパイプ３９に対して螺
動させることで、シース２４と絶縁チューブ２５と、操
作軸１０とは、突当てパイプ３９および固定操作ハンド
ル２８に対して前後方向へ移動させることが可能であ
る。このようにすることで、第１のストッパ部１１およ
び第２のストッパ部１２による終端位置を前後に同時に
調整可能となる。なお、以上述べてきた第１のストッパ
部１１および第２のストッパ部１２の調整手段を適宜組
み合わせ的に併用してもよい。The basic function of this is the same as that of the above-mentioned embodiment, but the sheath 24, the insulating tube 25, and the operating shaft 10 are made to move by screwing the sheath 24 with respect to the butting pipe 39. It is possible to move the abutting pipe 39 and the fixed operation handle 28 in the front-rear direction. By doing so, the end positions of the first stopper portion 11 and the second stopper portion 12 can be adjusted back and forth simultaneously. The adjusting means for the first stopper portion 11 and the second stopper portion 12 described above may be used in combination as appropriate.
【００７４】[0074]
【発明の効果】以上説明したように本発明は、鉗子部を
操作する操作軸に、連結ロッドをねじ込み連結し、可動
操作ハンドルとともに操作部を構成する固定操作ハンド
ルに、上記連結ロッドを挿通させ、この固定操作ハンド
ルと連結ロッドに、連結ロッドの前進終端と後進終端を
規制する第１のストッパ部および第２のストッパ部を設
けたので、各ストッパ部が把持操作上の障害とならずに
すみ、可動操作ハンドルの開閉両方向に対する有効なス
トッパ作用をなし、しかも、ストッパ終端位置の調整が
可能となるなどの効果を奏する。As described above, according to the present invention, the connecting rod is screwed and connected to the operating shaft for operating the forceps part, and the connecting rod is inserted through the fixed operating handle which constitutes the operating part together with the movable operating handle. Since the fixed operation handle and the connecting rod are provided with the first stopper portion and the second stopper portion that regulate the forward end and the backward end of the connecting rod, the stopper portions do not become an obstacle in the gripping operation. The corners have an effective stopper action in both directions of opening and closing the movable operation handle, and further, the stopper end position can be adjusted.
【図１】（Ａ）は本発明の第１実施例に係る把持鉗子要
部の縦断面図、（Ｂ）は（Ａ）中Ａ−Ａ線に沿う部分の
断面図。FIG. 1A is a vertical cross-sectional view of a main part of a grasping forceps according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view of a portion along line AA in FIG.
【図２】（Ａ）は、把持鉗子全体の縦断面図。（Ｂ）
は、（Ａ）のＢ−Ｂ線に沿う縦断面図。FIG. 2A is a vertical cross-sectional view of the entire grasping forceps. (B)
Is a vertical cross-sectional view taken along the line BB of (A).
【図３】（Ａ）は、本発明の第２実施例に係る、把持鉗
子全体の側面図。（Ｂ）は、把持鉗子の挿入部および鉗
子部の平面図。FIG. 3A is a side view of the entire grasping forceps according to the second embodiment of the present invention. (B) is a plan view of the insertion portion of the grasping forceps and the forceps portion.
【図４】（Ａ）は、本発明の第３実施例に係る、把持鉗
子の挿入部および鉗子部の平面図。（Ｂ）は、本発明の
第４実施例に係る、把持鉗子の挿入部および鉗子部の平
面図。FIG. 4A is a plan view of the insertion portion and the forceps portion of the grasping forceps according to the third embodiment of the present invention. FIG. 7B is a plan view of the insertion portion and the forceps portion of the grasping forceps according to the fourth embodiment of the present invention.
【図５】本発明の第５の実施例に係る把持鉗子の要部を
縦断面図。FIG. 5 is a vertical cross-sectional view of a main part of a grasping forceps according to a fifth embodiment of the present invention.
【図６】本発明の第６の実施例に係る把持鉗子の要部を
縦断面図。FIG. 6 is a vertical cross-sectional view of a main part of a grasping forceps according to a sixth embodiment of the present invention.
【図７】（Ａ）は本発明の第７の実施例に係る把持鉗子
の要部を縦断面図、（Ｂ）は（Ａ）のＣ−Ｃ線に沿う部
分の断面図。FIG. 7A is a vertical cross-sectional view of an essential part of a grasping forceps according to a seventh embodiment of the present invention, and FIG. 7B is a cross-sectional view of a portion along line CC of FIG.
【図８】本発明の第８の実施例に係る把持鉗子の要部を
縦断面図。FIG. 8 is a vertical cross-sectional view of the essential parts of a grasping forceps according to an eighth embodiment of the present invention.
【図９】本発明の第９の実施例に係る把持鉗子の要部を
縦断面図。FIG. 9 is a vertical cross-sectional view of a main part of a grasping forceps according to a ninth embodiment of the present invention.
【図１０】本発明の第１０の実施例に係る把持鉗子の要
部を縦断面図。FIG. 10 is a vertical cross-sectional view of a main part of a grasping forceps according to a tenth embodiment of the present invention.
３…鉗子部、１０…操作軸、１１…第１のストッパ部、
１２…第２のストッパ部２４…シース、２８…固定操作
ハンドル、３０…可動操作ハンドル、４１…連結ロッ
ド。3 ... forceps part, 10 ... operation shaft, 11 ... first stopper part,
12 ... 2nd stopper part 24 ... Sheath, 28 ... Fixed operation handle, 30 ... Movable operation handle, 41 ... Connecting rod.
Claims (1)
ースと、前記シースの基端部に設けられた固定操作ハン
ドルと、この固定操作ハンドルに対して回動自在に連結
される可動操作ハンドルと、この可動操作ハンドルの回
動作用端に一端が連結されかつ他端側が前記固定操作ハ
ンドルおよびシース内に進退自在に挿入されるとともに
他端が前記先端把持部に連結され前記可動操作ハンドル
の回動操作に伴う進退移動により前記先端把持部を開閉
操作する操作軸と、前記操作軸が挿通される固定操作ハ
ンドルの部位に設けられ前記操作軸の前進終端を規制す
る第１のストッパ部と、前記操作軸が挿通される固定操
作ハンドルの部位に設けられ前記操作軸の後進終端を規
制する第２のストッパ部とを具備し、第１のストッパ部
および第２のストッパ部の少なくとも一方のストッパ部
は、前記操作軸の移動終端位置を変更調節自在な構成と
したことを特徴とする把持鉗子。1. A sheath having a distal end provided with an openable and closable distal end grip portion, a fixed operation handle provided at the proximal end of the sheath, and a movable member rotatably connected to the fixed operation handle. One end of the operating handle is connected to the rotary action end of the movable operating handle, the other end is inserted into the fixed operating handle and the sheath so as to be able to move forward and backward, and the other end is connected to the distal end grip portion. A first stopper that is provided at a portion of a fixed operation handle through which the distal end gripping portion is opened and closed by a forward / backward movement associated with the turning operation of the handle and a fixed operation handle through which the operational shaft is inserted, and that regulates the forward end of the operational shaft. And a second stopper portion that is provided at a portion of the fixed operation handle through which the operation shaft is inserted and that regulates the backward end of the operation shaft, the first stopper portion and the second strike portion. At least one of the stopper portion of the path section, grasping forceps, characterized in that the modified adjusted freely configure a moving end position of the operating shaft.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5048245A JPH067366A (en) | 1992-04-20 | 1993-03-09 | Gripping forceps |
| US08/043,182 US5370659A (en) | 1992-04-09 | 1993-04-06 | Grasping forceps for medical treatment |
| DE4311770A DE4311770A1 (en) | 1992-04-09 | 1993-04-08 | Tweezers for use in medical surgery - has actuating shaft acting between movable part of handle and gripper, by back and forth movement, gripper is opened and closed |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4-99411 | 1992-04-20 | ||
| JP9941192 | 1992-04-20 | ||
| JP5048245A JPH067366A (en) | 1992-04-20 | 1993-03-09 | Gripping forceps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH067366A true JPH067366A (en) | 1994-01-18 |
Family
ID=26388481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5048245A Withdrawn JPH067366A (en) | 1992-04-09 | 1993-03-09 | Gripping forceps |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067366A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111506A (en) * | 1986-10-29 | 1988-05-16 | Shinko Electric Co Ltd | Method for searching optimum route in independent unmanned vehicle system |
| JPH07255734A (en) * | 1994-03-17 | 1995-10-09 | Terumo Corp | Surgical appliance |
| JPH0838494A (en) * | 1994-07-28 | 1996-02-13 | Asahi Optical Co Ltd | Endoscope grasping forceps |
| JPH10151143A (en) * | 1996-11-25 | 1998-06-09 | Asahi Optical Co Ltd | Hot biopsy clamp for endoscope |
| JPH11178833A (en) * | 1997-12-24 | 1999-07-06 | Olympus Optical Co Ltd | Ultrasonic treatment implement |
| JPH11192229A (en) * | 1998-01-06 | 1999-07-21 | Olympus Optical Co Ltd | High frequency applicable operation implement |
| JPH11332870A (en) * | 1998-05-28 | 1999-12-07 | Asahi Optical Co Ltd | Operating part for treating device for endoscope |
| JP2000254135A (en) * | 1999-03-09 | 2000-09-19 | Olympus Optical Co Ltd | Ultrasonic wave coagulating and incising device |
| US6569178B1 (en) | 1999-03-09 | 2003-05-27 | Olympus Optical Co., Ltd. | Ultrasonic coagulating/cutting apparatus |
| JP2004057587A (en) * | 2002-07-30 | 2004-02-26 | Olympus Corp | Surgical treatment instrument |
| JP2004181031A (en) * | 2002-12-05 | 2004-07-02 | Pentax Corp | Two-channel endoscope |
| JP2007144122A (en) * | 2005-07-26 | 2007-06-14 | Microline Pentax Inc | Medical instrument which can accommodate movement of inner shaft |
| JP2007307022A (en) * | 2006-05-17 | 2007-11-29 | Pentax Corp | Structure of piping connection part of endoscope |
| US7458969B2 (en) | 2002-05-06 | 2008-12-02 | Olympus Corporation | Therapeutic device for tissue from living body |
| JP2009183690A (en) * | 2008-02-01 | 2009-08-20 | Olympus Medical Systems Corp | Operative appliance for endoscope |
| JP2014516729A (en) * | 2011-06-07 | 2014-07-17 | ボストン サイエンティフィック サイムド，インコーポレイテッド | Disposable sheath |
| JP2016503715A (en) * | 2013-01-16 | 2016-02-08 | テレフレックス メディカル インコーポレイテッドＴｅｌｅｆｌｅｘ Ｍｅｄｉｃａｌ Ｉｎｃｏｒｐｏｒａｔｅｄ | Rigid and flexible laparoscopic tool shaft and method of using the same |
| JP2021176406A (en) * | 2020-05-07 | 2021-11-11 | 株式会社平田精機 | Medical treatment tool |
-
1993
- 1993-03-09 JP JP5048245A patent/JPH067366A/en not_active Withdrawn
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111506A (en) * | 1986-10-29 | 1988-05-16 | Shinko Electric Co Ltd | Method for searching optimum route in independent unmanned vehicle system |
| JPH07255734A (en) * | 1994-03-17 | 1995-10-09 | Terumo Corp | Surgical appliance |
| JPH0838494A (en) * | 1994-07-28 | 1996-02-13 | Asahi Optical Co Ltd | Endoscope grasping forceps |
| JPH10151143A (en) * | 1996-11-25 | 1998-06-09 | Asahi Optical Co Ltd | Hot biopsy clamp for endoscope |
| JPH11178833A (en) * | 1997-12-24 | 1999-07-06 | Olympus Optical Co Ltd | Ultrasonic treatment implement |
| JPH11192229A (en) * | 1998-01-06 | 1999-07-21 | Olympus Optical Co Ltd | High frequency applicable operation implement |
| JPH11332870A (en) * | 1998-05-28 | 1999-12-07 | Asahi Optical Co Ltd | Operating part for treating device for endoscope |
| JP2000254135A (en) * | 1999-03-09 | 2000-09-19 | Olympus Optical Co Ltd | Ultrasonic wave coagulating and incising device |
| US6569178B1 (en) | 1999-03-09 | 2003-05-27 | Olympus Optical Co., Ltd. | Ultrasonic coagulating/cutting apparatus |
| US7458969B2 (en) | 2002-05-06 | 2008-12-02 | Olympus Corporation | Therapeutic device for tissue from living body |
| JP2004057587A (en) * | 2002-07-30 | 2004-02-26 | Olympus Corp | Surgical treatment instrument |
| JP2004181031A (en) * | 2002-12-05 | 2004-07-02 | Pentax Corp | Two-channel endoscope |
| JP2007144122A (en) * | 2005-07-26 | 2007-06-14 | Microline Pentax Inc | Medical instrument which can accommodate movement of inner shaft |
| US8025621B2 (en) | 2005-07-26 | 2011-09-27 | Microline Surgical, Inc. | Medical device with adjustable inner shaft movement |
| JP2007307022A (en) * | 2006-05-17 | 2007-11-29 | Pentax Corp | Structure of piping connection part of endoscope |
| JP2009183690A (en) * | 2008-02-01 | 2009-08-20 | Olympus Medical Systems Corp | Operative appliance for endoscope |
| JP2014516729A (en) * | 2011-06-07 | 2014-07-17 | ボストン サイエンティフィック サイムド，インコーポレイテッド | Disposable sheath |
| US9661987B2 (en) | 2011-06-07 | 2017-05-30 | Boston Scientific Scimed, Inc. | Disposable sheath |
| JP2016503715A (en) * | 2013-01-16 | 2016-02-08 | テレフレックス メディカル インコーポレイテッドＴｅｌｅｆｌｅｘ Ｍｅｄｉｃａｌ Ｉｎｃｏｒｐｏｒａｔｅｄ | Rigid and flexible laparoscopic tool shaft and method of using the same |
| US10582940B2 (en) | 2013-01-16 | 2020-03-10 | Teleflex Medical Incorporated | Rigid and flexible laparoscopic tool shafts and methods using same |
| JP2021176406A (en) * | 2020-05-07 | 2021-11-11 | 株式会社平田精機 | Medical treatment tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000509 |