JP4500297B2 - Medical ligature - Google Patents

Medical ligature Download PDF

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JP4500297B2
JP4500297B2 JP2006291515A JP2006291515A JP4500297B2 JP 4500297 B2 JP4500297 B2 JP 4500297B2 JP 2006291515 A JP2006291515 A JP 2006291515A JP 2006291515 A JP2006291515 A JP 2006291515A JP 4500297 B2 JP4500297 B2 JP 4500297B2
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ligating
ligation
wire
sheath
cutting
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JP2007069013A (en
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諭 宮本
晃一 川島
喜生 小貫
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Olympus Corp
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Description

この発明は、経内視鏡的に体内に挿入し、生体組織を結紮する医療用結紮具に関する。   The present invention relates to a medical ligation instrument that is inserted into a body endoscopically and ligates a living tissue.

従来、内視鏡のチャンネルに挿通して経内視鏡的に体腔内に挿入し、生体組織のポリープ等の病変部を結紮する医療用結紮装置が知られている(例えば、特許文献1〜6参照。)。
これら医療用結紮装置は、内視鏡のチャンネルに挿通可能なシースと、このシースに進退自在に挿通された操作ワイヤと、この操作ワイヤの先端部に着脱可能に接続されたループ状の結紮ワイヤと、この結紮ワイヤの基端部に設けられたストッパとから構成されている。
2. Description of the Related Art Conventionally, medical ligation apparatuses that are inserted into a body cavity through a channel of an endoscope and transendoscopically ligated with a lesion such as a polyp of a living tissue are known (for example, Patent Documents 1 to 3). 6).
These medical ligation apparatuses include a sheath that can be inserted into a channel of an endoscope, an operation wire that is inserted into the sheath so as to be able to advance and retreat, and a loop-like ligation wire that is detachably connected to a distal end portion of the operation wire. And a stopper provided at the proximal end of the ligating wire.

この医療用結紮装置は、生体組織のポリープ等の病変部に結紮ワイヤを掛け、操作ワイヤを手元操作部側に牽引すると、ストッパが相対的に結紮ワイヤの先端側に移動して縮径され、病変部が緊縛される。この結紮によって病変部の血流が止まるため、結紮状態で数日後には病変組織が壊死して脱落し、結紮ワイヤとストッパとからなる結紮具も同時に脱落し、肛門から自然に排出される。   In this medical ligation apparatus, when a ligature wire is hung on a lesioned part such as a polyp of a living tissue, and the operation wire is pulled toward the hand operation part side, the stopper is relatively moved toward the distal end side of the ligation wire and reduced in diameter, The lesion is tied up. This ligation stops the blood flow in the affected area, and in several days in the ligated state, the diseased tissue becomes necrotic and falls off, and the ligature consisting of the ligating wire and the stopper also falls off at the same time and is naturally discharged from the anus.

結紮ワイヤは、例えば、ナイロン、ポリオレフィン等の合成樹脂、ステンレス等の金属細線によって形成され、ストッパは、シリコンゴムなどの弾性体からなる細管等によって形成されている。また、ストッパは、特許文献4に示すように、結紮ワイヤの一部に結び目を付けたものもある。   The ligation wire is formed of, for example, a synthetic resin such as nylon or polyolefin, or a thin metal wire such as stainless steel, and the stopper is formed of a thin tube made of an elastic body such as silicon rubber. In addition, as shown in Patent Document 4, some stoppers have knots attached to a part of the ligating wire.

また、結紮ワイヤを病変部に緊縛した後、結紮ワイヤと操作ワイヤとの連結を切り離す必要があり、特許文献4に示すように、内視鏡のチャンネルに鋏鉗子を挿通し、鋏鉗子の鋏で結紮ワイヤの基端部を切断したり、特許文献6に示すように、シースの先端部にカッター部材を設け、結紮ワイヤをカッター部材によって切断している。
特開平10−194号公報 特開平10−277046号公報 特開平11−244294号公報 特開昭48−71090号公報 特開平8−98840号公報 特開昭54−30692号公報
In addition, after the ligation wire is tied to the lesioned part, the connection between the ligation wire and the operation wire needs to be disconnected. As shown in Patent Document 4, the acupuncture forceps is inserted into the channel of the endoscope, Then, the base end portion of the ligature wire is cut, or as shown in Patent Document 6, a cutter member is provided at the distal end portion of the sheath, and the ligature wire is cut by the cutter member.
JP-A-10-194 Japanese Patent Laid-Open No. 10-277046 JP 11-244294 A JP 48-71090 A JP-A-8-98840 JP 54-30692 A

しかしながら、前述したように、結紮ワイヤを病変部に緊縛した後、結紮ワイヤと操作ワイヤとの連結を切り離すために、内視鏡のチャンネルに鋏鉗子を挿通し、鋏鉗子の鋏で結紮ワイヤの基端部を切断する操作は、医療用結紮具と鋏鉗子を経内視鏡的に体腔内に入れ替え挿入する必要があり、手術時間が長くかかるという問題がある。   However, as described above, after ligating the ligature wire to the lesioned part, in order to disconnect the ligation wire from the operation wire, the ligature wire is inserted into the channel of the endoscope, and the The operation of cutting the proximal end portion requires the medical ligation tool and the scissors forceps to be inserted and inserted into the body cavity endoscopically, resulting in a long operation time.

また、特許文献6の第7図に示すようなシースの先端部内に開閉可能なカッター部材を設けた構造では、部品点数が多くなり製造コストが高くなる。また、結紮具のワイヤに加えて、カッター部材を作動させるための操作ワイヤをシース内に挿通させるため、シースが太径になり、内径の小さいチャンネルを有した内視鏡への挿入が困難となる。 Further, in the structure in which the openable / closable cutter member is provided in the distal end portion of the sheath as shown in FIG. 7 of Patent Document 6, the number of parts increases and the manufacturing cost increases. Further, in addition to the wire of the ligation tool, an operation wire for operating the cutter member is inserted into the sheath, so that the sheath has a large diameter and is difficult to insert into an endoscope having a small inner diameter channel. Become.

また、特許文献6の第8図に示すような基端側横方向を向いた刃を筒状部材内に設けたカッター部材の場合、その製造が非常に難しいととともに、シースが太径となるといった問題がある。 Further, in the case of a cutter member in which a blade facing in the lateral direction on the proximal end side as shown in FIG. 8 of Patent Document 6 is provided in a cylindrical member, its manufacture is very difficult and the sheath has a large diameter. There is a problem.

さらに、従来の医療用結紮装置は、結紮ワイヤの基端部を切断して操作ワイヤとの連結を切り離しているために、結紮部から結紮ワイヤが長く伸びたまま体腔内に残る。従って、例えば他の処置具や内視鏡と干渉することがある。   Furthermore, since the conventional medical ligation apparatus cut | disconnects the connection with an operation wire by cut | disconnecting the base end part of a ligation wire, it remains in a body cavity with the ligation wire extending long from the ligation part. Therefore, for example, it may interfere with other treatment tools and endoscopes.

この発明は、前記事情に着目してなされたもので、その目的とするところは、医療用結紮具を体腔内に挿入して生体組織を結紮部材で結紮した状態て固定する固定部材を設け、生体組織を結紮部材によって結紮した状態に固定できる医療用結紮具を提供することにある。   This invention has been made paying attention to the above circumstances, the purpose of which is to provide a fixing member for fixing a medical tissue ligating instrument inserted into a body cavity and ligating a living tissue with a ligating member, An object of the present invention is to provide a medical ligation tool capable of fixing a living tissue in a state ligated by a ligation member.

この発明は、前記目的を達成するために、請求項1は、可撓性の線材からなり、生体組織に係合することで該生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で前記結紮部材を固定する固定部材と、から成る医療用結紮具において、前記固定部材は、前記結紮部材を通す内腔を形成した先端部と、円筒形状の基端部と、先端側から基端側に向って前記先端部内から前記基端部内にわたり内挿された挿入軸と、を有した外側部材と、前記外側部材の基端部内に前記軸方向へ移動可能に設けられ、前記外側部材の前記挿入軸が滑動可能に挿入できる中心孔を有し、先端側へ移動することで前記外側部材の前記内腔に侵入して前記内腔の内表面の少なくとも一部との間で前記内腔に通した前記結紮部材を挟持・固定可能な係合部を有した内側部材と、を具備していることを特徴とする医療用結紮具である。 In order to achieve the above object, according to a first aspect of the present invention, there is provided a ligating member made of a flexible wire material, which ligates the living tissue by engaging with the living tissue, and can be moved forward and backward with respect to the ligating member. A fixing member for fixing the ligation member in a state in which a living tissue is ligated , wherein the fixing member includes a distal end portion that forms a lumen through which the ligation member passes, and a cylindrical shape. An outer member having a proximal end portion, an insertion shaft inserted from the distal end portion into the proximal end portion from the distal end side toward the proximal end side, and in the axial direction within the proximal end portion of the outer member. The outer member has a central hole into which the insertion shaft of the outer member can be slidably inserted, and moves to the distal end side so as to enter the inner cavity of the outer member and The ligating member passed through the lumen with at least a part thereof It is a medical ligature tool, characterized in that comprises an inner member having a pinching and fixing engagement portion.

請求項2は、前記中心孔の内周面に、前記挿入軸の侵入に対して抵抗となる突起を形成したことを特徴とする請求項1記載の医療用結紮具である。 According to a second aspect of the present invention , in the medical ligation device according to the first aspect of the present invention, a protrusion that is resistant to the penetration of the insertion shaft is formed on the inner peripheral surface of the center hole .

請求項3は、前記外側部材の基端部に、前記内腔を通る前記結紮部材の基端側部分を通して前記外側部材の外側へ導く側孔と、前記外側部材の外側へ導かれた前記結紮部材の基端側部分を前記外側部材の内側へ導くガイドとを設けたことを特徴とする請求項1または請求項2に記載の医療用結紮具である。 According to a third aspect of the present invention, a side hole that leads to the outside of the outer member through a proximal end side portion of the ligating member that passes through the inner cavity and a ligature guided to the outside of the outer member are formed at a proximal end portion of the outer member. The medical ligation tool according to claim 1 or 2, further comprising a guide for guiding a proximal end portion of the member to the inside of the outer member .

請求項4は、前記内腔に係合部が侵入し、前記結紮部材を固定するときの位置で互いに係合可能な係合爪と係合孔を前記内側部材と前記外側部材の両方にそれぞれ形成したことを特徴とする請求項1、請求項2または請求項3に記載の医療用結紮具である。 According to a fourth aspect of the present invention, an engaging claw and an engaging hole that can be engaged with each other at a position when the engaging portion enters the inner cavity and fixes the ligating member are provided in both the inner member and the outer member, respectively. The medical ligation tool according to claim 1 , 2, or 3, wherein the medical ligation tool is formed.

前記構成によれば、医療用結紮具を体腔内に挿入して病変部等の生体組織を結紮部材によって結紮した状態で固定できる。従って、従来のように、内視鏡のチャンネルに結紮装置と鋏鉗子を差し替える必要が無く、手技時間を短縮できる。   According to the said structure, it can fix in the state which inserted the medical ligation tool in the body cavity and ligated biological tissues, such as a lesioned part, with the ligation member. Therefore, it is not necessary to replace the ligation device and the scissors forceps in the endoscope channel as in the conventional case, and the procedure time can be shortened.

以下、この発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図1〜図5は第1の実施形態を示し、図1は医療用結紮装置の全体を示し、先端部を断面した全体構成図、図2〜図4は先端部の縦断側面図、図5は結紮ワイヤによって病変部を結紮した状態の斜視図である。   1 to 5 show a first embodiment, FIG. 1 shows the entire medical ligation apparatus, an overall configuration diagram in which the tip is cut, FIGS. 2 to 4 are longitudinal side views of the tip, and FIG. FIG. 5 is a perspective view of a state where a lesion is ligated with a ligation wire.

図1に示すように、医療用結紮装置は1は、生体内に留置される医療用結紮具2と、この医療用結紮具2を体内に誘導して結紮操作を行う操作装置3とから構成されている。操作装置3は、内視鏡のチャンネル内に挿通される可撓性を有する挿入部4と手元操作部5とから構成されている。   As shown in FIG. 1, a medical ligation apparatus 1 includes a medical ligation instrument 2 that is placed in a living body, and an operation apparatus 3 that guides the medical ligation instrument 2 into the body and performs a ligation operation. Has been. The operation device 3 includes a flexible insertion portion 4 and a hand operation portion 5 that are inserted into a channel of an endoscope.

挿入部4は、可撓性シースからなる外側シース6と、この外側シース6内に軸方向に進退自在に挿通された可撓性シースからなる内側シース7と、この内側シース7の外側に嵌合され、軸方向に進退自在に挿通された切断用シース8と、前記内側シース7の内側に挿通された軸方向に進退自在な操作ワイヤ9とから構成されている。   The insertion portion 4 is fitted to an outer sheath 6 made of a flexible sheath, an inner sheath 7 made of a flexible sheath inserted into the outer sheath 6 so as to be able to advance and retreat in the axial direction, and an outer side of the inner sheath 7. The cutting sheath 8 is inserted through the inner sheath 7 so as to be movable back and forth in the axial direction, and the operation wire 9 is inserted through the inner sheath 7 and can be moved back and forth in the axial direction.

外側シース6は、例えばポリエチレン、PTFEなどの可撓性を有するプラスチックで、φ2〜5mmである。また、内側シース7は、例えばポリエチレン、PTFEなどの可撓性を有するプラスチックで形成されているが、金属製メッシュが入っていてもよく、金属製コイルでもよい。操作ワイヤ9はステンレスなどの金属撚り線で形成されている。   The outer sheath 6 is a flexible plastic such as polyethylene or PTFE and has a diameter of 2 to 5 mm. The inner sheath 7 is formed of a flexible plastic such as polyethylene or PTFE, but may include a metal mesh or a metal coil. The operation wire 9 is formed of a twisted metal wire such as stainless steel.

手元操作部5は、外側シース6の基端部に固定された取手10と、操作ワイヤ9の基端部に固定され、操作部本体11に対して進退自在なスライダ12と、切断用シース8の基端部に固定された切断操作部13と、指掛けリング14とから構成されている。そして、取手10、スライダ12及び切断操作部13によって外側シース6、操作ワイヤ9及び切断用シース8を前後方向に相対的に移動できるようになっている。   The hand operating unit 5 includes a handle 10 fixed to the base end of the outer sheath 6, a slider 12 fixed to the base end of the operating wire 9, and can be moved forward and backward with respect to the operating unit main body 11, and a cutting sheath 8. It is comprised from the cutting operation part 13 fixed to the base end part of this, and the finger ring 14. The outer sheath 6, the operation wire 9, and the cutting sheath 8 can be relatively moved in the front-rear direction by the handle 10, the slider 12, and the cutting operation unit 13.

切断用シース8の先端部には結紮部材切断手段としてのステンレス等の金属部材からなる環状の切断部材15が設けられ、この切断部材15の先端部全周には鋭角な切断刃16が設けられている。また、操作ワイヤ9の先端部にはフック形状の係合部材17が固着されている。   An annular cutting member 15 made of a metal member such as stainless steel as a ligating member cutting means is provided at the distal end portion of the cutting sheath 8, and an acute cutting blade 16 is provided around the entire distal end portion of the cutting member 15. ing. A hook-shaped engagement member 17 is fixed to the distal end portion of the operation wire 9.

次に、前記医療用結紮具2について説明する。医療用結紮具2は、先端部分に生体組織を結紮する結紮部材としてのループ状の結紮ワイヤ18が設けられている。結紮ワイヤ18はナイロン、ポリオレフィン等の合成樹脂、ステンレス等の金属細線、絹糸、生体吸収性の糸であり、線径がφ0.2〜φ1mmに形成されている。この結紮ワイヤ18は単線、より線、編み線のいずれの形態であってもよい。また、結紮ワイヤ18の基端側は折り返されて折り返し部19が形成されており、結紮ワイヤ18の両端末及び平行する2本のワイヤは固定具としての接続パイプ20の内腔に接着等によって固定されている。   Next, the medical ligation tool 2 will be described. The medical ligation tool 2 is provided with a loop-shaped ligation wire 18 as a ligation member for ligating a living tissue at a distal end portion. The ligature wire 18 is a synthetic resin such as nylon or polyolefin, a fine metal wire such as stainless steel, a silk thread, or a bioabsorbable thread, and has a wire diameter of φ0.2 to φ1 mm. The ligating wire 18 may be in the form of a single wire, a stranded wire, or a knitted wire. Further, the proximal end side of the ligature wire 18 is folded to form a folded portion 19, and both ends of the ligature wire 18 and the two parallel wires are bonded to the lumen of the connection pipe 20 as a fixture by bonding or the like. It is fixed.

結紮ワイヤ18の中間部にはワイヤ上を進退自在な固定部材としての管状のストッパ21が進退自在に嵌合されている。このストッパ21は、例えばシリコンゴム、フッ素ゴム等のゴムあるいは各種熱可塑性エラストマー、または糸の結び目からなり、前進によってループ部を縮径し、後退するとループ部が拡径するようになっている。   A tubular stopper 21 as a fixing member capable of moving forward and backward on the wire is fitted in an intermediate portion of the ligating wire 18 so as to be movable forward and backward. The stopper 21 is made of, for example, rubber such as silicon rubber or fluororubber, various thermoplastic elastomers, or thread knots. The diameter of the loop portion is reduced by the forward movement, and the diameter of the loop portion is increased when the backward movement is performed.

このストッパ21の基端側の結紮ワイヤ18には前記切断部材15を受ける受け部材22が設けられている。この受け部材22は、ステンレスなどの金属、ポリプロピレン、ABS、ポリアセタール、ポリカーボネートなどのプラスチックからなる円筒状で、軸方向の略中間部には環状突起部23が一体に設けられている。受け部材22の基端部には縮径部24が設けられ、この縮径部24は内側シース7の先端部に挿入支持されるようになっている。従って、内側シース7の外周面と受け部材22の外周面との間には段差がなく、切断用シース8が円滑に進退できるようになっている。   The ligating wire 18 on the proximal end side of the stopper 21 is provided with a receiving member 22 for receiving the cutting member 15. The receiving member 22 has a cylindrical shape made of a metal such as stainless steel, or a plastic such as polypropylene, ABS, polyacetal, or polycarbonate, and an annular protrusion 23 is integrally provided at a substantially intermediate portion in the axial direction. A reduced diameter portion 24 is provided at the proximal end portion of the receiving member 22, and the reduced diameter portion 24 is inserted and supported at the distal end portion of the inner sheath 7. Accordingly, there is no step between the outer peripheral surface of the inner sheath 7 and the outer peripheral surface of the receiving member 22, and the cutting sheath 8 can be smoothly advanced and retracted.

受け部材22の環状突起部23より先端側には結紮ワイヤ18が挿通可能な一対の先端側孔25a,25bが穿設され、環状突起部23より基端側には結紮ワイヤ18が挿通可能な一対の基端側孔26a,26bが穿設されている。先端側孔25a,25bの先端側の内側面及び基端側孔26a,26bの基端側の内側面は、傾斜面に形成され、結紮ワイヤ18が挿通し易く、かつ抜け易くなっている。さらに、環状突起部23の基端側の側面は切断部材15の突き当て面27に形成されている。   A pair of distal end side holes 25a and 25b through which the ligating wire 18 can be inserted are formed on the distal end side of the annular protrusion 23 of the receiving member 22, and the ligation wire 18 can be inserted on the proximal end side of the annular protrusion 23. A pair of base end side holes 26a and 26b are formed. The inner surface of the distal end side of the distal end side holes 25a and 25b and the inner side surface of the proximal end side of the proximal end holes 26a and 26b are formed as inclined surfaces, so that the ligating wire 18 can be easily inserted and removed. Further, the proximal side surface of the annular protrusion 23 is formed on the abutment surface 27 of the cutting member 15.

また、結紮ワイヤ18の折り返した部分のそれぞれが受け部材22の基端開口から受け部材22の内部へ、次に基端側孔26a,26bから受け部材22の外部へ、次に環状突起部23の外側を経由して先端側孔25a,25bから受け部材22の内部へ、そして先端開口から外部へと挿通され、受け部材22の先端側では結紮ワイヤ18が束ねられた状態でストッパ21の内腔に圧入されている。さらに、受け部材22の全長は5〜10mm程度であり、その先端面と基端側孔26a,26bとの間の寸法Lで、切断されて残るワイヤの長さが決まるのでLは短い方が望ましく、2〜5mm程度に設定されている。   Further, each of the folded portions of the ligating wire 18 passes from the proximal end opening of the receiving member 22 to the inside of the receiving member 22, then from the proximal end side holes 26 a and 26 b to the outside of the receiving member 22, and then to the annular protrusion 23. Are inserted into the receiving member 22 from the front end holes 25a and 25b and from the front end opening to the outside, and the ligating wire 18 is bundled on the front end side of the receiving member 22 in the stopper 21. It is press-fitted into the cavity. Further, the overall length of the receiving member 22 is about 5 to 10 mm, and the length L of the wire remaining after being cut is determined by the dimension L between the distal end surface and the base end side holes 26a and 26b. Desirably, it is set to about 2 to 5 mm.

ここで、受け部材22と環状突起部23と切断部材15の寸法について述べると、受け部材22の外径をA、環状突起部23の外径をB、切断部材15の内径をCとすると、これらはφ1〜3mm程度であり、A<C、B>C、B−A=0.2〜1mm程度に設定されている。また、基端側孔26a,26bは図15に示すように、それぞれ前後に間隔を空けてずれていてもよい。   Here, the dimensions of the receiving member 22, the annular projecting portion 23, and the cutting member 15 will be described. If the outer diameter of the receiving member 22 is A, the outer diameter of the annular projecting portion 23 is B, and the inner diameter of the cutting member 15 is C, These are about φ1 to 3 mm, and are set to A <C, B> C, and B−A = about 0.2 to 1 mm. Further, as shown in FIG. 15, the base end side holes 26 a and 26 b may be shifted from each other at an interval in the front and rear direction.

次に、第1の実施形態の作用について説明する。   Next, the operation of the first embodiment will be described.

まず、スライダ12を操作して操作ワイヤ9を前進させて係合部材17を外側シース6および内側シース7の先端開口から突出させる。この状態で、結紮ワイヤ18の基端部の折り返し部19を係合部材17のフック部に引っ掛ける。スライダ12を操作して操作ワイヤ9を後退させて係合部材17を内側シース7の内部に引き込むと、受け部材22の縮径部24が内側シース7の先端開口に挿入されて支持される。この状態で、取手10を操作して外側シース6を前進させると、図2に示すように、結紮ワイヤ18が外側シース6の内部に収納されループ部が窄まる状態となる。   First, the operation wire 9 is advanced by operating the slider 12, and the engaging member 17 is projected from the distal end openings of the outer sheath 6 and the inner sheath 7. In this state, the folded portion 19 at the proximal end portion of the ligating wire 18 is hooked on the hook portion of the engaging member 17. When the operating wire 9 is retracted by operating the slider 12 and the engaging member 17 is pulled into the inner sheath 7, the reduced diameter portion 24 of the receiving member 22 is inserted into the distal end opening of the inner sheath 7 and supported. In this state, when the handle 10 is operated to advance the outer sheath 6, as shown in FIG. 2, the ligation wire 18 is housed inside the outer sheath 6, and the loop portion is squeezed.

この状態で、挿入部4を内視鏡のチャンネルに挿通して体腔内に挿入し、体腔内の目的の部位に挿入部4の先端部を導く。内視鏡によってポリープ等の病変部28を観察しながら、取手10を操作して外側シース6を後退させると、結紮ワイヤ18が外側シース6の先端開口から突出し、結紮ワイヤ18のループ部が図1に示すように、弾性的に復元して拡径される。   In this state, the insertion portion 4 is inserted through the endoscope channel and inserted into the body cavity, and the distal end portion of the insertion portion 4 is guided to a target site in the body cavity. When the outer sheath 6 is retracted by operating the handle 10 while observing a lesion 28 such as a polyp with an endoscope, the ligation wire 18 protrudes from the distal end opening of the outer sheath 6, and the loop portion of the ligation wire 18 is illustrated. As shown in FIG. 1, the diameter is expanded elastically.

次に、内視鏡によって病変部28を観察しながら結紮ワイヤ18のループ部を病変部28の根元に引っ掛けた後、スライダ12を操作して操作ワイヤ9を後退させると、係合部材17を介して結紮ワイヤ18の基端部が内側シース7の内部に引き込まれるとともに、ストッパ21および受け部材22は結紮ワイヤ18の先端方向に移動する。従って、結紮ワイヤ18のループ部が図3に示すように、縮径されて病変部28が緊縛される。この結紮によって病変部28への血流が止まる。   Next, when the loop portion of the ligation wire 18 is hooked on the root of the lesioned portion 28 while observing the lesioned portion 28 with an endoscope, the operation wire 9 is moved backward by operating the slider 12. Accordingly, the proximal end portion of the ligating wire 18 is drawn into the inner sheath 7, and the stopper 21 and the receiving member 22 move in the distal direction of the ligating wire 18. Therefore, the diameter of the loop portion of the ligating wire 18 is reduced as shown in FIG. This ligation stops blood flow to the lesioned part 28.

次に、スライダ12を保持したまま切断操作部13を操作して切断用シース8を前進させると、切断用シース8は内側シース7に案内されながら前進し、切断部材15が受け部材22の基端部に嵌合して切断刃16が突き当て面27に当接する。従って、受け部材22に挿通された結紮ワイヤ18の基端部側は、図4に示すように、基端側孔26a,26bの付近で切断される。   Next, when the cutting sheath 8 is moved forward by operating the cutting operation portion 13 while holding the slider 12, the cutting sheath 8 moves forward while being guided by the inner sheath 7, and the cutting member 15 is moved to the base of the receiving member 22. The cutting blade 16 is brought into contact with the abutting surface 27 by being fitted to the end portion. Therefore, the base end side of the ligating wire 18 inserted through the receiving member 22 is cut in the vicinity of the base end side holes 26a and 26b, as shown in FIG.

このとき、結紮ワイヤ18の基端部側は操作ワイヤ9によって引っ張られ、テンションが加わっているため、切断刃16による切れ味がよい。また、図4において上下2本の結紮ワイヤ18が同時に切断されることなく、時間差が生じる場合もあるが、上下2本の結紮ワイヤ18は接続パイプ20によって結合されているため、一方ずつ切断されてもテンションが保たれるため、切れ味が変わることはない。   At this time, the proximal end side of the ligature wire 18 is pulled by the operation wire 9 and tension is applied, so that the cutting edge 16 is sharp. In FIG. 4, the upper and lower two ligating wires 18 may not be cut at the same time, and there may be a time difference. However, since the upper and lower two ligating wires 18 are coupled by the connection pipe 20, they are cut one by one. However, since the tension is maintained, the sharpness does not change.

基端側孔26a,26bが前後にずれている場合には、結紮ワイヤ18の一方が切断刃16で切断された後、もう一方の結紮ワイヤ18を切断することとなる。その結果、一度に両方の結紮ワイヤ18と切断刃16が接触しないため、結紮ワイヤ18ヘ加わる切断力が分散されず、切断が容易となる。   When the base end holes 26a and 26b are displaced forward and backward, after one of the ligating wires 18 is cut by the cutting blade 16, the other ligating wire 18 is cut. As a result, both the ligature wires 18 and the cutting blade 16 do not contact at a time, so that the cutting force applied to the ligature wire 18 is not dispersed and the cutting becomes easy.

結紮ワイヤ18の基端部側が切断されると、内側シース7と受け部材22とが分離され、結紮具2と操作装置3とが完全に分離された状態となる。内視鏡のチャンネルから挿入部4を抜き取ると、結紮ワイヤ18の切断された基端部から受け部材22も抜け落ち、図5に示すように、ストッパ21によって緊縛状態に保持された結紮ワイヤ18のみが体内に留置され、病変部28の緊縛手技が完了する。結紮ワイヤ18から脱落した受け部材22は、消化管を介して体外へ自然排出される。
このように、医療用結紮装置1によって病変部28を結紮ワイヤ18によって緊縛する操作と結紮ワイヤ18を切断して分離する操作を一連の操作によって行うことができ、従来のように、内視鏡のチャンネルに結紮装置と鋏鉗子を差し替える必要が無く、手技時間を短縮できる。しかも、結紮ワイヤ18をストッパ21に近い部分で切断できるため、結紮ワイヤ18が長く伸びたまま体腔内に残ることはなく、他の処置具や内視鏡と干渉することを防止できる。
When the proximal end side of the ligature wire 18 is cut, the inner sheath 7 and the receiving member 22 are separated, and the ligature tool 2 and the operation device 3 are completely separated. When the insertion portion 4 is extracted from the channel of the endoscope, the receiving member 22 also falls out from the cut proximal end portion of the ligation wire 18, and only the ligation wire 18 held in a tightly bound state by the stopper 21 as shown in FIG. Is left in the body, and the binding procedure for the lesioned part 28 is completed. The receiving member 22 dropped from the ligature wire 18 is naturally discharged out of the body through the digestive tract.
In this manner, the operation of binding the lesioned portion 28 with the ligature wire 18 by the medical ligation apparatus 1 and the operation of cutting and separating the ligature wire 18 can be performed by a series of operations. It is not necessary to replace the ligation device and the forceps with the other channel, and the procedure time can be shortened. In addition, since the ligation wire 18 can be cut at a portion close to the stopper 21, the ligation wire 18 does not remain in the body cavity while extending long, and can be prevented from interfering with other treatment tools and endoscopes.

また、操作装置3の長手方向に向いた切断刃16をもつ切断手段15が切断用シース8の先端に取り付けられているという簡単な構成であるため、操作装置の製造コストの低減が図れると共に、操作装置の細径化が可能となる。更に、操作装置3を繰り返し使用して切断刃16の切れ味が劣化した場合でも、容易に切断用シース8および切断手段15が操作装置3から取り外して交換が可能である。   Further, since the cutting means 15 having the cutting blade 16 facing the longitudinal direction of the operating device 3 has a simple configuration in which it is attached to the distal end of the cutting sheath 8, the manufacturing cost of the operating device can be reduced, The diameter of the operating device can be reduced. Furthermore, even when the operating device 3 is repeatedly used and the cutting edge 16 deteriorates, the cutting sheath 8 and the cutting means 15 can be easily detached from the operating device 3 and replaced.

図6及び図7は第2の実施形態を示し、第1の実施形態と同一構成部分は同一番号を付して説明を省略する。図6及び図7は、医療用結紮装置の先端側の縦断側面図である。本実施形態の受け部材22の環状突起部23の基端側側面には切断部材15の切断刃16が差し込まれる環状溝30が設けられている。   6 and 7 show the second embodiment, and the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. 6 and 7 are longitudinal side views of the distal end side of the medical ligation apparatus. An annular groove 30 into which the cutting blade 16 of the cutting member 15 is inserted is provided on the side surface on the proximal end side of the annular protrusion 23 of the receiving member 22 of the present embodiment.

従って、スライダ12を保持したまま切断操作部13を操作して切断用シース8を前進させると、切断用シース8は内側シース7に案内されながら前進し、切断部材15の切断刃16が受け部材22の環状溝30に差し込まれる。従って、受け部材22に挿通された結紮ワイヤ18の基端部側は、図7に示すように、基端側孔26a,26bの付近で切断される。このとき、切断刃16が環状溝30に案内されることにより、ワイヤ上を滑ることはなく、確実に切断できるとともに、切れ味が一層向上する。   Accordingly, when the cutting sheath 8 is moved forward by operating the cutting operation portion 13 while holding the slider 12, the cutting sheath 8 moves forward while being guided by the inner sheath 7, and the cutting blade 16 of the cutting member 15 is moved by the receiving member. 22 is inserted into the annular groove 30. Therefore, the base end side of the ligating wire 18 inserted through the receiving member 22 is cut in the vicinity of the base end side holes 26a and 26b, as shown in FIG. At this time, the cutting blade 16 is guided by the annular groove 30, so that it can be reliably cut without slipping on the wire, and the sharpness is further improved.

図8は第3の実施形態を示し、第1の実施形態と同一構成部分は同一番号を付して説明を省略する。図8は、医療用結紮装置の先端側の縦断側面図である。本実施形態の切断部材31はシース7aの内側に設けられ、切断用シース8によって進退するようになっている。切断部材31は容易に交換可能なように切断用シース8と着脱自在となっていてもよい。
また、受け部材32は環状突起部を有さない円筒状で、先端側孔25a,25b及び基端側孔26a,26bが設けられているとともに、内壁には切断部材31の切断刃33の突き当て面34が設けられている。
FIG. 8 shows a third embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted. FIG. 8 is a longitudinal side view of the distal end side of the medical ligation apparatus. The cutting member 31 of the present embodiment is provided inside the sheath 7 a and is advanced and retracted by the cutting sheath 8. The cutting member 31 may be detachable from the cutting sheath 8 so that it can be easily replaced.
Further, the receiving member 32 has a cylindrical shape without an annular protrusion, and is provided with distal end side holes 25a and 25b and proximal end side holes 26a and 26b, and the inner wall is projected by the cutting blade 33 of the cutting member 31. A contact surface 34 is provided.

従って、切断操作部13を操作して切断用シース8を前進させると、切断用シース8はシース7aに案内されながら前進し、切断部材15の切断刃33が受け部材32の突き当て面34に当接する。従って、受け部材32に挿通された結紮ワイヤ18の基端部側は、基端側孔26a,26bの付近で切断される。   Therefore, when the cutting sheath 8 is moved forward by operating the cutting operation portion 13, the cutting sheath 8 moves forward while being guided by the sheath 7 a, and the cutting blade 33 of the cutting member 15 is brought into contact with the abutting surface 34 of the receiving member 32. Abut. Therefore, the proximal end side of the ligating wire 18 inserted through the receiving member 32 is cut in the vicinity of the proximal end holes 26a and 26b.

本実施形態のように、シース7aの内側に切断部材31を設けることにより、シース7aの外側には突起物がなくなり、また切断刃が露出しなくなるため、外側シースが不要となり、内視鏡のチャンネルに直接挿通することができる。外側シースが不要となることにより、医療用結紮装置1の挿入部4の細径化が図られ、内径の小さいチャンネルに挿通可能となる。   By providing the cutting member 31 on the inner side of the sheath 7a as in the present embodiment, no protrusions are formed on the outer side of the sheath 7a, and the cutting blade is not exposed. Can be inserted directly into the channel. By eliminating the need for the outer sheath, the diameter of the insertion portion 4 of the medical ligation apparatus 1 can be reduced, and the insertion can be made through a channel having a small inner diameter.

図9〜図14は第4の実施形態を示し、第1の実施形態と同一構成部分は同一番号を付して説明を省略する。図9は医療用結紮装置の先端側の医療用結紮具の縦断側面図、図10は同じく平面図、図11は図9のA−A線に沿う断面図、図12は図9のB−B線に沿う断面図、図13は図9のC−C線に沿う断面図、図14は結紮ワイヤを切断した状態の医療用結紮装置の先端側の医療用結紮具の縦断側面図である。   9 to 14 show a fourth embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted. 9 is a longitudinal side view of a medical ligation tool on the distal end side of the medical ligation apparatus, FIG. 10 is a plan view of the same, FIG. 11 is a cross-sectional view taken along line AA in FIG. 9, and FIG. FIG. 13 is a cross-sectional view taken along line C-C in FIG. 9, and FIG. 14 is a longitudinal side view of the medical ligation tool on the distal end side of the medical ligation apparatus in a state where the ligature wire is cut. .

結紮ワイヤ18の基端部側には固定部材40が設けられている。この固定部材40は、ポリプロピレン、ABS、ポリアセタール、ポリカーボネートなどのプラスチック、または液晶ポリマー、ポリフタルアミドなどの比較的剛性があり、流動性に優れた材質が好ましいが、ステンレス、アルミニウムなどの金属でもよく、外径はφ1〜3mm程度で、長さは5〜10mm程度である。   A fixing member 40 is provided on the proximal end side of the ligating wire 18. The fixing member 40 is preferably made of a plastic material such as polypropylene, ABS, polyacetal, or polycarbonate, or a relatively rigid material having excellent fluidity such as a liquid crystal polymer or polyphthalamide, but may be a metal such as stainless steel or aluminum. The outer diameter is about φ1 to 3 mm and the length is about 5 to 10 mm.

固定部材40は、内側部材としての第1部材41と外側部材としての第2部材42とから構成されている。第1部材41は、円筒状で、基端部に大径部43が設けられ、先端部には小径部からなる係合部としての圧入部44が設けられている。大径部43の先端側の外周には環状の切断部材45がその切断刃46を先端側に向けて嵌着されており、基端側の外周の上下2箇所にはワイヤガイド47a,47bが設けられている。さらに、大径部43の先端側の外周にはワイヤガイド47a,47bと周方向に45°偏倚した左右2箇所には係合爪48a,48bが設けられている。また、第1部材41の軸心部には軸方向に内腔49が設けられ、この内腔49の軸方向の略中間部には突起50が設けられている。この突起50の高さは0.1〜0.3mmが適当である。   The fixing member 40 includes a first member 41 as an inner member and a second member 42 as an outer member. The first member 41 has a cylindrical shape, a large diameter portion 43 is provided at the proximal end portion, and a press-fit portion 44 as an engaging portion including a small diameter portion is provided at the distal end portion. An annular cutting member 45 is fitted to the outer periphery on the distal end side of the large-diameter portion 43 with its cutting blade 46 facing the distal end side, and wire guides 47a and 47b are provided at two upper and lower positions on the outer periphery on the proximal end side. Is provided. Furthermore, engagement claws 48a and 48b are provided on the outer periphery of the large-diameter portion 43 on the left and right sides of the wire guides 47a and 47b and 45 ° offset in the circumferential direction. Further, a lumen 49 is provided in the axial direction in the axial center portion of the first member 41, and a protrusion 50 is provided in a substantially middle portion of the lumen 49 in the axial direction. The height of the protrusion 50 is suitably 0.1 to 0.3 mm.

第2部材42は、先端部に円柱部51が設けられ、基端部に円柱部51と一体に円筒部52が設けられている。円柱部51の中心部には円筒部52の内部を貫通して第1部材41の内腔49に挿入される挿入軸53が突設されている。さらに、円柱部51には挿入軸53を囲撓するように、第1部材41の圧入部44が圧入される固定用内腔54が設けられている。固定用内腔54の長さは1〜3mmが適当である。   The second member 42 is provided with a columnar part 51 at the distal end and a cylindrical part 52 integrally with the columnar part 51 at the proximal end. An insertion shaft 53 that protrudes through the inside of the cylindrical portion 52 and is inserted into the lumen 49 of the first member 41 protrudes from the central portion of the column portion 51. Further, the cylindrical portion 51 is provided with a fixing lumen 54 into which the press-fit portion 44 of the first member 41 is press-fitted so as to surround and flex the insertion shaft 53. The length of the fixing lumen 54 is suitably 1 to 3 mm.

また、第2部材42の先端面には結紮ワイヤ18が1本ずつ挿通される先端孔55a,55bが設けられている。第2部材42の円筒部52における外周の上下2箇所には側孔56a,56bが設けられ、この隣側にはスリット57a,57bが設けられている。さらに、円筒部52にはスリット57a,57bと周方向に45°偏倚した左右2箇所には第1部材41の係合爪48a,48bと係合される係合孔58a,58bが設けられている。また、第2部材42の円柱部51の基端側の端面には切断刃46の突き当て面59が設けられ、固定用内腔54の先端部近傍には圧入部44の突き当て部60が設けられている。また、固定用内腔54の内径と圧入部44の外径の片側クリアランスは、結紮ワイヤ18の外径よりも小さくなるように設定されている。   Further, distal end holes 55 a and 55 b through which the ligating wires 18 are inserted one by one are provided on the distal end surface of the second member 42. Side holes 56a and 56b are provided at two locations above and below the outer periphery of the cylindrical portion 52 of the second member 42, and slits 57a and 57b are provided on the adjacent sides. Furthermore, the cylindrical portion 52 is provided with engagement holes 58a and 58b that are engaged with the engagement claws 48a and 48b of the first member 41 at two positions on the left and right sides that are 45 ° offset from the slits 57a and 57b. Yes. Further, an abutting surface 59 of the cutting blade 46 is provided on the end surface of the cylindrical portion 51 of the second member 42, and an abutting portion 60 of the press-fit portion 44 is provided in the vicinity of the distal end portion of the fixing lumen 54. Is provided. The one-side clearance between the inner diameter of the fixing lumen 54 and the outer diameter of the press-fit portion 44 is set to be smaller than the outer diameter of the ligation wire 18.

そして、第1部材41の内腔49には第2部材42の挿入軸53が挿入され、挿入軸53の先端面は突起50に当接して挿入深さが規制されている。従って、第2部材42の円筒部52は切断部材45の外側に嵌合し、切断刃46を覆った状態にある。   The insertion shaft 53 of the second member 42 is inserted into the lumen 49 of the first member 41, and the distal end surface of the insertion shaft 53 is in contact with the protrusion 50, so that the insertion depth is restricted. Accordingly, the cylindrical portion 52 of the second member 42 is fitted to the outside of the cutting member 45 and covers the cutting blade 46.

また、結紮ワイヤ18は先端孔55a,55bから第2部材42の内部に挿通され、側孔56a,56bから外部に導出され、スリット57a、57b及びワイヤガイド47a,47bに案内され、固定部材40の基端側に導かれている。結紮ワイヤ18の折り返し部19及び両端末の接続パイプ20による結合は第1の実施形態と同様である。   The ligating wire 18 is inserted into the second member 42 from the front end holes 55a and 55b, led out to the outside from the side holes 56a and 56b, guided to the slits 57a and 57b and the wire guides 47a and 47b, and the fixing member 40. It is led to the base end side. Coupling of the ligature wire 18 by the folded portion 19 and the connecting pipe 20 of both ends is the same as in the first embodiment.

次に、第4の実施形態の作用について説明する。   Next, the operation of the fourth embodiment will be described.

まず、操作ワイヤ9を前進させて係合部材17をシース7aの先端開口から突出させる。この状態で、結紮ワイヤ18の基端部の折り返し部19を係合部材17のフック部に引っ掛ける。操作ワイヤ9を後退させて係合部材17をシース7aの内部に引き込むと、固定部材40の縮径部24がシース7aの先端開口に挿入されて支持される。この状態で、結紮ワイヤ18を含むシース7aを内視鏡のチャンネルに挿通して体腔内に挿入し、体腔内の目的の部位にシース7aの先端部を導く。内視鏡によってポリープ等の病変部28を観察しながら、シース7aを前進させると、結紮ワイヤ18がチャンネルの先端開口から突出し、結紮ワイヤ18のループ部が図9に示すように、弾性的に復元して拡径される。   First, the operation wire 9 is advanced to cause the engagement member 17 to protrude from the distal end opening of the sheath 7a. In this state, the folded portion 19 at the proximal end portion of the ligating wire 18 is hooked on the hook portion of the engaging member 17. When the operating wire 9 is retracted and the engaging member 17 is drawn into the sheath 7a, the reduced diameter portion 24 of the fixing member 40 is inserted into and supported by the distal end opening of the sheath 7a. In this state, the sheath 7a including the ligating wire 18 is inserted through the endoscope channel and inserted into the body cavity, and the distal end portion of the sheath 7a is guided to a target site in the body cavity. When the sheath 7a is advanced while observing the lesion 28 such as a polyp with an endoscope, the ligature wire 18 protrudes from the opening at the tip of the channel, and the loop portion of the ligature wire 18 is elastically elastic as shown in FIG. The diameter is restored and expanded.

次に、内視鏡によって病変部28を観察しながら結紮ワイヤ18のループ部を病変部28の根元に引っ掛けた後、操作ワイヤ9を後退させると、係合部材17を介して結紮ワイヤ18の基端部がシース7aの内部に引き込まれ、結紮ワイヤ18が縮径されて病変部28を緊縛する。   Next, when the operation wire 9 is retracted after the loop portion of the ligation wire 18 is hooked on the root of the lesion portion 28 while observing the lesion portion 28 with an endoscope, the ligation wire 18 is moved through the engagement member 17. The proximal end portion is drawn into the sheath 7a, and the ligature wire 18 is reduced in diameter to bind the lesioned portion 28.

操作ワイヤ9をさらに後退させると、固定部材40の第2部材42の先端面が病変部28に突き当たり、病変部28がストッパとなるため、相対的に第1部材41が前進し、第2部材42が後退する。従って、第2部材42の挿入軸53が突起50を突き破り、第1部材41の内腔49に挿入される。   When the operation wire 9 is further retracted, the distal end surface of the second member 42 of the fixing member 40 abuts against the lesioned portion 28 and the lesioned portion 28 serves as a stopper, so that the first member 41 relatively moves forward and the second member 42 moves backward. Accordingly, the insertion shaft 53 of the second member 42 breaks through the protrusion 50 and is inserted into the lumen 49 of the first member 41.

また、第1部材41の圧入部44が第2部材42の固定用内腔54方向に前進するため、結紮ワイヤ18の中途部は固定用内腔54の内面と圧入部44の外面との間に挟持されて固定される。さらに、第1部材41の圧入部44が第2部材42の固定用内腔54方向に前進すると、第1部材41に設けられた切断部材45の切断刃46が第2部材42の突き当て面59に突き当たり、結紮ワイヤ18の中途部は切断されるとともに、切断端末は固定用内腔54の内面と圧入部44の外面との間に挟持・固定される。   Further, since the press-fit portion 44 of the first member 41 advances in the direction of the fixing lumen 54 of the second member 42, the midway portion of the ligating wire 18 is between the inner surface of the fixing lumen 54 and the outer surface of the press-fit portion 44. It is pinched and fixed. Further, when the press-fit portion 44 of the first member 41 advances in the direction of the fixing lumen 54 of the second member 42, the cutting blade 46 of the cutting member 45 provided on the first member 41 is brought into contact with the abutting surface of the second member 42. 59, the middle part of the ligation wire 18 is cut, and the cutting terminal is sandwiched and fixed between the inner surface of the fixing lumen 54 and the outer surface of the press-fit portion 44.

また、圧入部44の先端部が突き当て部60に突き当たると、第1部材41の係合爪48a,48bが第2部材42の係合孔58a,58bと係合し、第1部材41と第2部材42が結合状態となる。   When the tip of the press-fit portion 44 abuts against the abutting portion 60, the engaging claws 48 a and 48 b of the first member 41 engage with the engaging holes 58 a and 58 b of the second member 42, The second member 42 is in a coupled state.

結紮ワイヤ18の切断によってシース7aと固定部材40とが分離され、結紮具2と操作装置3とが完全に分離された状態となる。内視鏡のチャンネルからシース7aを抜き取ると、固定部材40によって緊縛状態に保持された結紮ワイヤ18のみが体内に留置され、病変部28の緊縛手技が完了する。   By cutting the ligature wire 18, the sheath 7a and the fixing member 40 are separated, and the ligature tool 2 and the operating device 3 are completely separated. When the sheath 7a is extracted from the channel of the endoscope, only the ligature wire 18 held in a tightly bound state by the fixing member 40 is left in the body, and the binding technique for the lesioned part 28 is completed.

このように、医療用結紮装置1によって病変部28を結紮ワイヤ18によって緊縛すると同時に結紮ワイヤ18を切断して分離する操作を一連の操作によって行うことができ、従来のように、内視鏡のチャンネルに結紮装置と鋏鉗子を差し替える必要が無く、手技時間を短縮できる。しかも、結紮ワイヤ18の切断端末は固定部材40の内部に収まるため、他の処置具や内視鏡と干渉することをより防止できる。また、切断部材45が医療用結紮具2自体に設けられているため、切断刃46を繰り返し使用されることはなく常に新品状態の切断刃を使用することなる。その結果、結紮ワイヤ18の確実な切断が可能となる。   In this manner, the lesioned part 28 is tightly bound by the ligature wire 18 by the medical ligation apparatus 1, and at the same time, the operation of cutting and separating the ligature wire 18 can be performed by a series of operations. It is not necessary to replace the ligation device and the forceps in the channel, and the procedure time can be shortened. Moreover, since the cutting terminal of the ligating wire 18 is accommodated inside the fixing member 40, it is possible to further prevent interference with other treatment tools and endoscopes. Moreover, since the cutting member 45 is provided in the medical ligation tool 2 itself, the cutting blade 46 is not used repeatedly, and a new cutting blade is always used. As a result, the ligation wire 18 can be reliably cut.

また、固定部材40の内部に切断部材45を設けることにより、突起物がなくなるため、外側シースが不要となり、直接内視鏡のチャンネルに挿通することができる。外側シースが不要となることにより、医療用結紮装置1の挿入部4の細径化が図られ、内径の小さいチャンネルに挿通可能となる。   Further, by providing the cutting member 45 inside the fixing member 40, the projections are eliminated, so that the outer sheath is not necessary and can be directly inserted into the channel of the endoscope. By eliminating the need for the outer sheath, the diameter of the insertion portion 4 of the medical ligation apparatus 1 can be reduced, and the insertion can be made through a channel having a small inner diameter.

図16〜図18は第5の実施形態を示し、図16は先端部の縦断側面図、図17は切断用シースの先端外観図、図18は結紮時の状態の斜視図であり、第1〜3の実施形態と異なる点のみ説明する。   16 to 18 show a fifth embodiment, FIG. 16 is a longitudinal side view of the distal end portion, FIG. 17 is an external view of the distal end of the cutting sheath, and FIG. 18 is a perspective view of the state at the time of ligation. Only differences from the third to third embodiments will be described.

図16に示すように、ストッパ21の外径は、内側シース7の外径と略同径となっており、内側シース7の先端面がストッパ21の基端面と当接可能となっている。切断用シース8は金属製メッシュ入りのプラスチック(例えば、ポリエチレン、PTFE、ナイロンなど)、または金属製の多条コイルで形成されており、回転追従性に優れている。 As shown in FIG. 16, the outer diameter of the stopper 21 is substantially the same as the outer diameter of the inner sheath 7, and the distal end surface of the inner sheath 7 can come into contact with the proximal end surface of the stopper 21. The cutting sheath 8 is formed of a metal mesh plastic (for example, polyethylene, PTFE, nylon, etc.) or a metal multi-strip coil, and has excellent rotational followability.

図17に示すように、切断用シース8の先端には切断部材65が接続されている。切断部材65は切り欠き61を有しており、その切り欠き61の先端側縁および側面縁には切断刃66が設けられている。切り欠き61の先端側には爪部62が設けられている。 As shown in FIG. 17, a cutting member 65 is connected to the distal end of the cutting sheath 8. The cutting member 65 has a notch 61, and a cutting blade 66 is provided on the leading edge and the side edge of the notch 61. A claw portion 62 is provided on the front end side of the notch 61.

次に、第5の実施形態の作用について説明する。
病変部28に結紮ワイヤ18のループ部を引っかけた後、スライダ12を手元側に引き、病変部28を結紮する。その後、スライダ12をわずかに先端側に押し進め、図18(a)に示すようにストッパ21の基端側の結紮ワイヤ18の一部分が内側シース7の先端側に露出させる。
Next, the operation of the fifth embodiment will be described.
After the loop portion of the ligation wire 18 is hooked on the lesioned portion 28, the slider 12 is pulled toward the proximal side, and the lesioned portion 28 is ligated. Thereafter, the slider 12 is slightly pushed forward, and a part of the ligation wire 18 on the proximal end side of the stopper 21 is exposed to the distal end side of the inner sheath 7 as shown in FIG.

次に切断操作部13を操作して切断用シース8を前進させ、内側シース7よりも先端側に突出させる。その状態で、内視鏡の湾曲操作などを用いて、図18(b)に示すように露出した結紮ワイヤ18を爪部62に引っかける。 Next, the cutting operation unit 13 is operated to advance the cutting sheath 8 so as to protrude from the inner sheath 7 to the distal end side. In this state, the exposed ligation wire 18 is hooked on the claw portion 62 as shown in FIG.

そして、切断操作部13を手元側に引くか、図18(b)に示した向きに回転させることで切断部材65に設けられた切断刃66が結紮ワイヤ18をストッパ21の基端側で切断する。 Then, the cutting blade 66 provided on the cutting member 65 cuts the ligature wire 18 at the proximal end side of the stopper 21 by pulling the cutting operation unit 13 toward the hand side or rotating it in the direction shown in FIG. To do.

本実施形態によれば、第1〜3の実施形態と異なり、医療用結紮具2に受け部材を設ける必要がなく、部品点数が少なくなるため、製造コストの低減が図れる。また、結紮ワイヤ18が受け部材の先端側孔25a,25b、基端側孔26a,26bを屈曲状態で通過しておらずストッパ21の基端から係合部材17までの間をストレートに伸びているため、病変部28を結紮する際、ストッパ21を軽い力量で先端側に押し進めることが可能となる。   According to the present embodiment, unlike the first to third embodiments, there is no need to provide a receiving member in the medical ligature tool 2 and the number of parts is reduced, so that the manufacturing cost can be reduced. Further, the ligature wire 18 does not pass through the distal end side holes 25a and 25b and the proximal end side holes 26a and 26b of the receiving member in a bent state, and extends straight from the proximal end of the stopper 21 to the engaging member 17. Therefore, when the lesioned part 28 is ligated, it is possible to push the stopper 21 forward with a small amount of force.

図19及び図20は第6の実施形態を示し、図19は先端部の縦断側面図、図20は図19におけるD矢視方向の外観図であり、第1〜第3の実施形態と異なる点のみ説明する。   19 and 20 show a sixth embodiment, FIG. 19 is a longitudinal side view of the tip, and FIG. 20 is an external view in the direction of arrow D in FIG. 19, which is different from the first to third embodiments. Only the point will be described.

ストッパ21の基端側には環状の切断部材75が設けられている。切断部材75はステンレスなどの金属部材で形成されている。切断部材75の基端側には縮径部24が設けられており、シース7aの先端内腔と嵌合可能となっている。そして縮径部24の外径は、シース7aの先端内径よりもわずかに大きく、嵌合した際に切断部材75がシース7aに対して容易に外れたり、回転しないような寸法に設定されている。 An annular cutting member 75 is provided on the proximal end side of the stopper 21. The cutting member 75 is formed of a metal member such as stainless steel. The diameter-reduced portion 24 is provided on the proximal end side of the cutting member 75, and can be fitted to the distal lumen of the sheath 7a. The outer diameter of the reduced diameter portion 24 is slightly larger than the inner diameter of the distal end of the sheath 7a, and is set to such a size that the cutting member 75 is easily detached from the sheath 7a and does not rotate when fitted. .

また、シース7aは金属製メッシュ入りのプラスチック(例えば、ポリエチレン、PTFE、ナイロンなど)、または金属製の多条コイルで形成されており、回転追従性に優れている。 In addition, the sheath 7a is formed of a plastic with a metal mesh (for example, polyethylene, PTFE, nylon, etc.) or a metal multi-strip coil, and has excellent rotational followability.

また切断部材75の側面には、2本分の結紮ワイヤ18が挿通自在な先端側孔71と基端側孔72が設けられており、切断部材75内腔と連通している。 Further, a distal end side hole 71 and a proximal end side hole 72 through which two ligating wires 18 can be inserted are provided on the side surface of the cutting member 75, and communicate with the lumen of the cutting member 75.

結紮ワイヤ18はストッパ21内を通った後、切断部材75の先端開口から入り、先端側孔71を通って外部に出て、そして、基端側孔72、切断部材75内腔、シース7a内腔を通って係合部材17まで伸びている。 After passing through the stopper 21, the ligating wire 18 enters from the distal end opening of the cutting member 75, exits through the distal end side hole 71, and then exits to the outside. Then, the proximal end side hole 72, the lumen of the cutting member 75, and the sheath 7a It extends through the cavity to the engagement member 17.

切断部材75の先端から先端側孔71までの距離Lは短い方が望ましく、2〜5mm程度に設定されている。また、先端側孔71の両側の縁には切断刃76が設けられている。 The distance L from the tip of the cutting member 75 to the tip side hole 71 is preferably short, and is set to about 2 to 5 mm. Further, cutting blades 76 are provided on the edges on both sides of the distal end side hole 71.

次に、第6の実施形態の作用について説明する。
結紮ワイヤ18のループ部で病変部28を結紮した後、シース7aの基端側を回転させる。すると、切断手段75とシース7aの先端はそれらの間で容易に回転しないように嵌合しているため、切断手段75もシース7aの回転に追従して回転する。
Next, the operation of the sixth embodiment will be described.
After the lesioned portion 28 is ligated by the loop portion of the ligating wire 18, the proximal end side of the sheath 7a is rotated. Then, since the cutting means 75 and the distal end of the sheath 7a are fitted so as not to rotate easily between them, the cutting means 75 also rotates following the rotation of the sheath 7a.

結紮ワイヤ18の先端側は病変部28に結紮して固定されているため、切断手段75が回転すると切断刃76が先端側孔71を通過している部分の結紮ワイヤ18に当接し、切断する。そして、操作装置3を内視鏡から抜去すると切断手段75はシース7a先端に固定されたまま体外へと取り出される。   Since the distal end side of the ligating wire 18 is ligated and fixed to the lesioned part 28, when the cutting means 75 rotates, the cutting blade 76 comes into contact with the ligating wire 18 in the portion passing through the distal end side hole 71 and cuts. . When the operating device 3 is removed from the endoscope, the cutting means 75 is taken out of the body while being fixed to the distal end of the sheath 7a.

なお、先端側孔71の先端側の縁に切断刃76が設けられていても良く、その場合にはシース7aを手元側に引っ張ることにより、結紮ワイヤ18が切断刃76で切断される。その際、結紮ワイヤ18を切断するのに必要な力量において、シース7aと縮径部24が外れないように設定されている必要がある。   In addition, the cutting blade 76 may be provided in the edge of the front end side of the front end side hole 71. In that case, the ligature wire 18 is cut | disconnected with the cutting blade 76 by pulling the sheath 7a to the hand side. At that time, it is necessary to set the sheath 7a and the reduced diameter portion 24 so as not to come off in the amount of force necessary to cut the ligature wire 18.

本実施形態によれば、第1〜3の実施形態の受け部材の代わりに切断手段75が設けられており、その結果、切断用シース8が不要となるため部品点数が減り、製造コストの低減が図れる。また、第1〜3の実施形態のように固定部材の基端側に別の部材が残った形で、医療用結紮具が体内に留置されないため、留置直後に他の処置具や内視鏡との干渉をより防止できる。   According to the present embodiment, the cutting means 75 is provided instead of the receiving member of the first to third embodiments. As a result, the cutting sheath 8 is not necessary, so the number of parts is reduced and the manufacturing cost is reduced. Can be planned. Moreover, since another member remains on the proximal end side of the fixing member as in the first to third embodiments, the medical ligation tool is not placed in the body, so that another treatment tool or endoscope immediately after placement. Interference with can be further prevented.

前記各実施形態によれば、次のような構成が得られる。   According to each of the embodiments, the following configuration is obtained.

(付記1)可撓性の線材からなり、生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で固定する固定部材とからなる医療用結紮具と、可撓性シースと手元操作部を有する操作装置と、からなる医療用結紮装置において、前記操作装置が、前記結紮部材上を進退自在に設けられた前記結紮部材を切断するための結紮部切断手段を備えていることを特徴とする医療用結紮装置。   (Supplementary note 1) A medical ligature tool comprising a flexible ligating member, and a ligating member for ligating a living tissue, and a fixing member that is movably provided on the ligating member and that fixes the living tissue in a ligated state. A medical ligation apparatus comprising: a flexible sheath and an operation device having a hand operation portion; cutting the ligation portion for cutting the ligation member provided on the ligation member so that the operation device can move forward and backward. A medical ligation apparatus comprising a means.

(付記2)可撓性の線材からなり、生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で固定する固定部材とからなる医療用結紮具と、可撓性シースと手元操作部を有する操作装置とからなる医療用結紮装置において、前記操作装置が、前記結紮部材上を進退自在に設けられた前記結紮部材を切断するための結紮部切断手段を備えており、前記結紮部材切断手段を進退あるいは回転操作することにより前記固定部材の基端側で前記結紮部材を切断できることを特徴とする医療用結紮具。   (Supplementary Note 2) A medical ligature tool comprising a flexible ligating member, and a ligating member for ligating a living tissue, and a fixing member provided on the ligating member so as to be movable forward and backward, and fixed in a state where the living tissue is ligated. In the medical ligation apparatus comprising a flexible sheath and an operation device having a hand operation portion, the ligation portion cutting means for cutting the ligation member provided on the ligation member so that the operation device can move forward and backward. The medical ligation tool is characterized in that the ligation member can be cut on the proximal end side of the fixing member by moving the ligation member cutting means forward / backward or rotating.

(付記3)可撓性の線材からなり、生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で固定する固定部材とからなる医療用結紮具と、可撓性シースと手元操作部を有する操作装置とからなる医療用結紮装置において、前記操作装置が、前記結紮部材上を進退自在に設けられた前記結紮部材を切断するための結紮部材切断手段を備えており、前記医療用結紮具が、前記結紮部材上に進退自在に設けられ、前記結紮部材切断手段を受ける受け部材を備えていることを特徴とする医療用結紮装置。   (Supplementary Note 3) A medical ligation tool comprising a flexible ligating member, and a ligating member for ligating a living tissue, and a fixing member that is provided on the ligating member so as to be movable forward and backward, and that fixes the living tissue in a ligated state. In the medical ligation apparatus comprising a flexible sheath and an operation apparatus having a hand operation section, the ligation member cutting means for cutting the ligation member provided on the ligation member so that the operation apparatus can move forward and backward. A medical ligation apparatus comprising: a receiving member that is provided on the ligation member so as to be capable of moving forward and backward, and that receives the ligation member cutting means.

(付記4)可撓性の線材からなり、生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で固定する固定部材とからなる医療用結紮具において、前記結紮部材上に進退自在に設けられ、前記結紮部材を切断するための結紮部切断手段を有することを特徴とする医療用結紮具。   (Additional remark 4) In the medical ligation tool which consists of a ligation member which ligates a biological tissue, and is provided in the said ligation member so that advancement / retraction is possible, and fixes in the state which ligated the biological tissue which consists of a flexible wire. A medical ligation tool comprising ligation section cutting means provided on the ligation member so as to be movable forward and backward, and for cutting the ligation member.

(付記5)付記4記載の医療用結紮具と、可撓性シースと手元操作部を有する操作装置とからなることを特徴とする医療用結紮装置。   (Additional remark 5) The medical ligation apparatus characterized by including the medical ligation tool of Additional remark 4, and the operation apparatus which has a flexible sheath and a hand operation part.

(付記6)可撓性の線材からなり、生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で固定する固定部材とからなる医療用結紮具において、前記固定部材が前記結紮部材を切断するための結紮部切断手段を備えていることを特徴とする医療用結紮具。   (Additional remark 6) In the medical ligation tool which consists of a ligation member which ligates a biological tissue, and is provided in the said ligation member so that advancement / retraction is possible, and fixes in the state which ligated the biological tissue, consisting of a flexible wire. The medical ligation tool, wherein the fixing member includes a ligation section cutting means for cutting the ligation member.

(付記7)付記6記載の医療用結紮具と、可撓性シースと手元操作部を有する操作装置とからなることを特徴とする医療用結紮装置。   (Supplementary note 7) A medical ligation device comprising the medical ligation tool according to supplementary note 6, and an operation device having a flexible sheath and a hand operation unit.

(付記8)付記3において、前記結紮部材切断手段を進退あるいは回転操作することにより前記固定部材の基端側で前記結紮部材を切断できることを特徴とする医療用結紮具。 (Supplementary note 8) The medical ligation tool according to supplementary note 3, wherein the ligation member can be cut at a proximal end side of the fixing member by advancing, retracting, or rotating the ligation member cutting means.

(付記9)付記4において、前記結紮部材切断手段を進退あるいは回転操作することにより前記固定部材の基端側で前記結紮部材を切断できることを特徴とする医療用結紮装置。   (Supplementary note 9) The medical ligation apparatus according to supplementary note 4, wherein the ligation member can be cut at a proximal end side of the fixing member by moving the ligation member cutting means forward or backward.

(付記10)可撓性の線材からなり、生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で固定する固定部材とからなる医療用結紮具において、前記固定部材の手元側の結紮部材上に進退自在に結紮部材切断手段を受ける受け部材を設け、前記固定部材と前記受け部材を前記結紮部材の先端側へ移動することにより、生体組織を結紮し、受け部材に向かって前記結紮部材切断手段を押し進めることにより、結紮部材を固定部材の基端側で切断できることを特徴とする医療用結紮具。   (Additional remark 10) In the medical ligation tool which consists of a ligation member which ligates a biological tissue, and is provided in the said ligation member so that advancement / retraction is possible and it fixes in the state which ligated the biological tissue which consists of a flexible wire. A receiving member for receiving a ligating member cutting means is provided on the ligating member on the proximal side of the fixing member, and the living body tissue is ligated by moving the fixing member and the receiving member toward the distal end side of the ligating member. The ligating member can be cut at the proximal end side of the fixing member by pushing the ligating member cutting means toward the receiving member.

(付記11)可撓性の線材からなり、生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で固定する固定部材とからなる医療用結紮具と、可撓性シースと手元操作部を有する操作装置とからなる医療用結紮装置において、前記固定部材の手元側の結紮部材上に進退自在に設けられた結紮部材切断手段と、前記固定部材の手元側で、かつ前記結紮部材切断手段より先端側の結紮部材上に進退自在に設けられ、結紮部材切断手段を受ける受け部材とからなり、前記操作装置により、前記固定部材と前記受け部材を前記結紮部材の先端側へ移動することにより、生体組織を結紮し、受け部材に向かって結紮部材切断手段を押し進めることにより、結紮部材を固定部材の基端側で切断できることを特徴とする医療用結紮装置。   (Supplementary Note 11) A medical ligation tool comprising a flexible ligating member, and a ligating member for ligating a living tissue, and a fixing member that is movably provided on the ligating member and that fixes the living tissue in a ligated state. In the medical ligation apparatus comprising a flexible sheath and an operation device having a hand operation portion, a ligation member cutting means provided on a hand ligation member on the hand side of the fixing member, and a hand of the fixing member. And a receiving member for receiving and receiving the ligating member cutting means. The receiving device receives the ligating member and the receiving member by the operating device. By ligating the living tissue by moving to the distal end side of the member and pushing the ligating member cutting means toward the receiving member, the ligating member can be cut at the proximal end side of the fixing member. Medical ligation apparatus.

(付記12)付記1または2において、前記可撓性シースの内側あるいは外側に進退自在に切断用可撓性シースが設けられており、前記結紮部材切断手段が前記切断用可撓性シースの先端に接続されていることを特徴とする医療用結紮装置。 (Additional remark 12) In additional remark 1 or 2, the flexible sheath for cutting | disconnection is provided inside the said flexible sheath or the outer side so that advancing and retreating is possible, and the said ligation member cutting means is the front-end | tip of the said flexible sheath for cutting. A medical ligation apparatus characterized by being connected to a medical device.

(付記13)付記3または11において、前記可焼性シースの内側あるいは外側に進退自在に切断用可撓性シースが設けられており、前記結紮部材切断手段が前記切断用可撓性シースの先端に接続されていることを特徴とする医療用結紮装置。 (Additional remark 13) In additional remark 3 or 11, the flexible sheath for a cutting | disconnection is provided in the inner side or the outer side of the said sinterable sheath, and the said ligation member cutting means is a front-end | tip of the said flexible sheath for a cutting | disconnection A medical ligation apparatus characterized by being connected to a medical device.

(付記14)可撓性の線材からなり、生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で固定する固定部材とからなる医療用結紮具において、前記固定部材が、前記結紮部材を固定する固定部分とその基端側に設けられた結紮部材切断手段を有した円筒状の第1部材と、前記固定部分と係合する係合部分とその基端側に設けられ前記結紮部材切断手段を受ける受け部分を有した円筒状の第2部材とからなり、前記第1部材が第2部材に対して挿入されることにより、前記固定部分と係合部分の間で前記結紮部材を挟持・固定するとともに、前記結紮部材切断手段が前記受け部分に当接して結紮部材を切断できることを特徴とする医療用結紮具。   (Additional remark 14) In the medical ligation tool which consists of a ligation member which ligates a biological tissue, and is provided in the said ligation member so that advancement / retraction is possible, and fixes in the state which ligated the biological tissue, consisting of a flexible wire. The fixing member includes a fixing portion for fixing the ligating member, a cylindrical first member having a ligating member cutting means provided on a base end side thereof, an engaging portion for engaging with the fixing portion, and A cylindrical second member provided on the base end side and having a receiving portion for receiving the ligating member cutting means, and the first member is inserted into the second member to engage with the fixed portion. A medical ligation tool characterized in that the ligating member is clamped and fixed between joint portions, and the ligating member cutting means abuts on the receiving portion to cut the ligating member.

(付記15)可撓性の線材からなり、生体組織を結紮する結紮部材と、前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で固定する固定部材と、可撓性シースと手元操作部を有する操作装置とからなる医療用結紮装置において、前記固定部材が、前記結紮部材を固定する固定部分とその基端側に設けられた結紮部材切断手段を有した第1部材と、前記固定部分と係合する係合部分とその基端側に設けられ前記結紮部材切断手段を受ける受け部分を有した第2部材とからなり、前記手元操作部によって前記結紮部材を装着した前記固定部材を基端側に移動させ、第1部材が第2部材に対して挿入され、前記固定部分と係合部分の間で前記結紮部材を挟持・固定するとともに、前記結紮部材切断手段が前記受け部分に当接して結紮部材を切断できることを特徴とする医療用結紮装置。   (Supplementary Note 15) A ligating member made of a flexible wire, ligating a living tissue, a fixing member provided on the ligating member so as to be movable forward and backward, and fixing the living tissue in a ligated state, a flexible sheath, and a hand In a medical ligation apparatus comprising an operation device having an operation unit, the fixing member includes a first member having a fixing portion for fixing the ligation member and a ligation member cutting means provided on a base end side thereof, The fixing member comprising: an engaging portion that engages with the fixing portion; and a second member that is provided on a proximal end side of the engaging portion and has a receiving portion that receives the ligating member cutting means, and the ligating member is mounted by the hand operating portion. The first member is inserted into the second member, and the ligating member is sandwiched and fixed between the fixed portion and the engaging portion, and the ligating member cutting means is the receiving portion. Ligating part in contact with Medical ligation apparatus characterized by capable of cleaving.

(付記16)付記12において、前記結紮部材切断手段が円筒部材からなり、その側面に前記円筒部材の先端開口部と連通するL字状の切り欠きを有しており、前記切り欠きの側面縁あるいは先端側の縁に切断刃が設けられていることを特徴とする医療用結紮装置。 (Supplementary note 16) In Supplementary note 12, the ligating member cutting means is made of a cylindrical member, and has an L-shaped notch communicating with a tip opening of the cylindrical member on a side surface thereof, and a side edge of the notch Or the cutting blade is provided in the edge of the front end side, The medical ligation apparatus characterized by the above-mentioned.

(付記17)付記12または13において、前記結紮部材切断手段が円筒部材からなり、その先端全周に切断刃が設けられていることを特徴とする医療用結紮装置。   (Additional remark 17) The medical ligation apparatus according to Additional remark 12 or 13, wherein the ligating member cutting means is formed of a cylindrical member, and a cutting blade is provided on the entire periphery of the tip.

(付記18)付記10において、前記結紮部材が基端側で折り返されて折り返し部を形成しており、前記固定部材が円筒状で弾性材料で形成されており、前記受け部材が円筒状で、かつ結紮部材を挿通可能な一対の先端側孔と、一対の基端側孔と、前記先端側孔と基端側孔の間の受け部材の外周に設けられた環状突起部を有しており、折り返した部分のそれぞれの結紮部材が受け部材の基端開口から受け部材内部へ、次に基端側孔から受け部材外部へ、次に環状突起部の外側を経由して先端側孔から受け部材内部へ、そして先端開口から外部へと挿通され、受け部材の先端側では折り返し部が束ねられた状態で固定具の内腔に圧入されていることを特徴とする医療用結紮具。 (Supplementary note 18) In Supplementary note 10, the ligating member is folded back at the proximal end side to form a folded portion, the fixing member is cylindrical and formed of an elastic material, and the receiving member is cylindrical. And a pair of distal end side holes through which the ligating member can be inserted, a pair of proximal end side holes, and an annular protrusion provided on the outer periphery of the receiving member between the distal end side hole and the proximal end side hole Each ligating member of the folded portion is received from the proximal end opening of the receiving member to the inside of the receiving member, then from the proximal end side hole to the outside of the receiving member, and then from the distal end side hole via the outside of the annular protrusion. A medical ligature, wherein the medical ligature is inserted into the member and from the distal end opening to the outside, and is press-fitted into the lumen of the fixture in a state where the folded portion is bundled on the distal end side of the receiving member.

(付記19)付記11において、前記医療用結紮具が、前記結紮部材が基端側で折り返されて前記係合部材に装着可能な折り返し部を形成しており、前記固定部材が円筒状で弾性材料で形成されており、前記受け部材が円筒状で、かつ結紮部材を挿通可能な一対の先端側孔と、一対の基端側孔と、前記先端側孔と基端側孔の間の受け部材の外周に設けられた環状突起部を有しており、折り返した部分のそれぞれの結紮部材が受け部材の基端開口から受け部材の内部へ、次に基端側孔から受け部材外部へ、次に環状突起部の外側を経由して先端側孔から受け部材内部へ、そして先端開口から外部へと挿通され、受け部材の先端側では折り返し部が束ねられた状態で固定具の内腔に圧入されており、前記操作装置が、内側シースと、この内側シースの内腔を進退自在で、折り返し部を引っ掛けるフック形状をした係合部材が先端に接続された操作ワイヤと、内側シース外周上を進退自在で、円筒状の結紮部材切断手段を先端に接続された切断用シースと、この切断用シースの外周上を進退自在で、医療用結紮具をその内腔に引き込み可能な内径を持った外側シースと、前記操作ワイヤ、切断用シース、外側シースを進退させるための操作手段を有しており、環状突起部を除いた受け部材の外径は結紮部材の内径よりも小さく、環状突起部の外径は結紮部材切断手段の内径よりも大きくなっており、切断用シースを先端側に進めた時、結紮部材切断手段の先端が環状突起部の基端面に突き当たることができ、内側シースの先端と受け部材の基端は同軸上で係合可能となっていることを特徴とする医療用結紮装置。   (Supplementary note 19) In the supplementary note 11, in the medical ligation tool, the ligation member is folded back on a proximal end side to form a folded portion that can be attached to the engagement member, and the fixing member is cylindrical and elastic. A pair of distal end side holes, a pair of proximal end side holes, and a receiver between the distal end side hole and the proximal end side hole formed of a material, wherein the receiving member is cylindrical and the ligating member can be inserted therethrough. It has an annular protrusion provided on the outer periphery of the member, each ligation member of the folded portion is from the proximal end opening of the receiving member to the inside of the receiving member, and then from the proximal end side hole to the outside of the receiving member, Next, it passes through the outer side of the annular projection from the tip side hole to the inside of the receiving member and from the tip opening to the outside, and at the tip side of the receiving member, the folded portion is bundled into the lumen of the fixture. Press-fitted, and the operating device includes an inner sheath and the inner sheath. An operation wire connected to the tip of the hook-shaped engagement member that hooks the folded portion can be moved forward and backward, and a cylindrical ligating member cutting means can be connected to the tip. A cutting sheath, an outer sheath having an inner diameter capable of retracting and retracting the medical ligation tool into its lumen, and the operation wire, the cutting sheath, and the outer sheath. The outer diameter of the receiving member excluding the annular protrusion is smaller than the inner diameter of the ligation member, and the outer diameter of the annular protrusion is larger than the inner diameter of the ligation member cutting means. When the cutting sheath is advanced toward the distal end, the distal end of the ligating member cutting means can abut against the proximal end surface of the annular protrusion, and the distal end of the inner sheath and the proximal end of the receiving member can be engaged coaxially. It is characterized by Medical ligation apparatus that.

(付記20)付記19において、環状突起部に基端から先端へと伸びる環状溝が設けられており、その環状溝の内径及び外径は、切断用シースを先端側に進めた時、結紮部材切断手段の先端がその環状溝内に挿入可能な寸法で形成されていることを特徴とする医療用結紮装置。   (Supplementary note 20) In supplementary note 19, the annular protrusion is provided with an annular groove extending from the proximal end to the distal end, and the inner diameter and the outer diameter of the annular groove are determined when the cutting sheath is advanced toward the distal end side. A medical ligation apparatus, characterized in that the tip of the cutting means is formed with a size that allows insertion into the annular groove.

(付記21)付記11において、前記結紮部材が基端側で折り返されて前記係合部材に装着可能な折り返し部を形成しており、前記固定部材が円筒状で弾性材料で形成されており、前記受け部材が円筒状で、かつ結紮部材を挿通可能な一対の先端側孔と、一対の基端側孔と、先端側孔と基端側孔の間の受け部材外周に設けられた環状突起部を有しており、折り返した部分のそれぞれの結紮部材が受け部材の基端開口から受け部材内部へ、次に基端側孔から受け部材外部へ、次に環状突起部外側を経由して先端側孔から受け部材内部へ、そして先端開口から外部へと挿通され、受け部材の先端側では折り返し部が束ねられた状態で固定具の内腔に圧入されており、前記操作装置が、シースと、このシースの内腔を進退自在で、折り返し部を引っ掛けられるフック形状をした係合部材が先端に接続された操作ワイヤと、操作ワイヤ及び係合部材とシースの間に位置し、シース内を進退自在で、円筒状の結紮部材切断手段を先端に接続した切断用シースと、操作ワイヤ、切断用シースを進退させるための操作手段を有しており、環状突起部の基端側の内径は結紮部材切断手段の外径よりも大きく、環状突起部の内径は結紮部材切断手段の外径よりも小さくなっており、切断用シースを先端側に進めた時、結紮部材切断手段の先端が環状突起部の基端面に突き当たることができ、シース先端と受け部材基端は同軸上で係合可能となっていることを特徴とする医療用結紮装置。   (Supplementary note 21) In the supplementary note 11, the ligating member is folded back at a proximal end side to form a folded portion that can be attached to the engaging member, and the fixing member is cylindrical and formed of an elastic material, The receiving member is cylindrical and has a pair of distal end side holes through which the ligating member can be inserted, a pair of proximal end side holes, and an annular protrusion provided on the outer periphery of the receiving member between the distal end side hole and the proximal end side hole. Each ligating member of the folded portion is received from the base end opening of the receiving member to the inside of the receiving member, then from the base end side hole to the outside of the receiving member, and then via the outside of the annular protrusion. It is inserted from the distal end side hole into the receiving member and from the distal end opening to the outside, and at the distal end side of the receiving member, the folded portion is press-fitted into the lumen of the fixture, and the operating device is a sheath The sheath lumen can be moved forward and backward, and the folded portion can be pulled. A hook-shaped engagement member connected to the distal end, and the operation wire and the engagement member are positioned between the sheath and the sheath, and can move forward and backward within the sheath, with a cylindrical ligating member cutting means at the distal end. The connected cutting sheath, the operating wire, and the operating means for advancing and retracting the cutting sheath are provided, and the inner diameter of the base end side of the annular protrusion is larger than the outer diameter of the ligating member cutting means. The inner diameter of the ligating member cutting means is smaller than the outer diameter of the ligating member cutting means, and when the cutting sheath is advanced to the distal end side, the distal end of the ligating member cutting means can abut against the proximal end surface of the annular protrusion, A medical ligation apparatus, characterized in that a receiving member base end is coaxially engageable.

(付記22)付記21において、シース外周上を進退自在で、医療用結紮具をその内径に引き込み可能な内径を持つ外側シースと、外側シースを進退させるための操作手段を有していることを特徴とする医療用結紮装置。   (Supplementary note 22) In Supplementary note 21, it has an outer sheath having an inner diameter capable of moving forward and backward on the outer periphery of the sheath and capable of drawing the medical ligation tool into the inner diameter, and an operating means for moving the outer sheath forward and backward. A medical ligation device.

(付記23)付記18〜22の何れかにおいて、受け部材の基端側で、かつ結紮部材基端より先端側の折り返し部分の一部分が互いに固定されていることを特徴とする医療用結紮装置。   (Supplementary note 23) The medical ligation apparatus according to any one of supplementary notes 18 to 22, wherein a part of the folded portion on the proximal end side of the receiving member and on the distal end side of the ligation member proximal end is fixed to each other.

(付記24)付記14において、結紮部材が先端側で折り返されて折り返し部を形成しており、第1部材は、円筒状の結紮部材切断手段と、結紮部材を挿通可能な一対の側孔あるいはスリットを有しており、第2部材は、一対の結紮部材を挿通可能な側孔と先端開口を有しており、側孔よりも先端側の内腔に設けられた環状突起部を有しており、第1部材と第2部材は同軸上に配置されており、折り返した部分のそれぞれの結紮部材が第1部材の基端から側孔あるいはスリットを通って外部へと伸びており、固定部材には、第1部材を第2部材に挿入しない状態に保持する第1保持手段と、第1部材を第2部材に挿入した状態に保持する第2保持手段が設けられており、第2部材の基端側内径は結紮部材切断手段の外径より大きく、固定部分内径と係合部分外径のクリアランスは結紮部材をその間で挟持・固定可能な寸法であり、さらに第1部材を第2部材に挿入した時、結紮部材切断手段の先端が環状部材の基端面に突き当たることができる医療用結紮具。   (Supplementary Note 24) In Supplementary Note 14, the ligating member is folded back at the tip side to form a folded portion, and the first member includes a cylindrical ligating member cutting means and a pair of side holes through which the ligating member can be inserted or The second member has a side hole through which the pair of ligating members can be inserted and a tip opening, and has an annular protrusion provided in the inner cavity on the tip side of the side hole. The first member and the second member are arranged coaxially, and each ligation member of the folded portion extends from the base end of the first member to the outside through a side hole or a slit, and is fixed. The member is provided with first holding means for holding the first member in a state in which the first member is not inserted into the second member, and second holding means for holding the first member in a state of being inserted into the second member. The inner diameter of the base end side of the member is larger than the outer diameter of the ligating member cutting means, and the fixed part The clearance between the diameter and the outer diameter of the engaging portion is a dimension that allows the ligating member to be clamped and fixed between them, and when the first member is inserted into the second member, the distal end of the ligating member cutting means is at the base end surface of the annular member Medical ligation tool that can be hit.

(付記25)付記15において、結紮部材が先端側で折り返されて折り返し部を形成しており、第1部材は、円筒状の結紮部材切断手段と、結紮部材を挿通可能な一対の側孔あるいはスリットを有しており、第2部材は、一対の結紮部材を挿通可能な側孔と先端開口を有しており、側孔よりも先端側の内腔に設けられた環状突起部を有しており、第1部材と第2部材は同軸上に配置されており、折り返した部分のそれぞれの結紮部材が第1部材の基端から側孔あるいはスリットを通って外部へと伸びており、固定部材には、第1部材を第2部材に挿入しない状態に保持する第1保持手段と、第1部材を第2部材に挿入した状態に保持する第2保持手段が設けられており、第2部材の基端側内径は結紮部材切断手段の外径より大きく、固定部分内径と係合部分外径のクリアランスは結紮部材をその間で挟持・固定可能な寸法であり、さらに第1部材を第2部材に挿入した時、結紮部材切断手段の先端が環状部材の基端面に突き当たることができ、操作装置が、シースと、このシースの内腔を進退自在で、折り返し部を引っ掛けられるフック形状をした係合部材が先端に接続された操作ワイヤと、この操作ワイヤを進退させるための操作手段を有しており、シースの先端と受け部材の基端は同軸上で係合可能となっていることを特徴とする医療用結紮装置。   (Supplementary Note 25) In Supplementary Note 15, the ligating member is folded back at the distal end side to form a folded portion, and the first member includes a cylindrical ligating member cutting means and a pair of side holes through which the ligating member can be inserted or The second member has a side hole through which the pair of ligating members can be inserted and a tip opening, and has an annular protrusion provided in the inner cavity on the tip side of the side hole. The first member and the second member are arranged coaxially, and each ligation member of the folded portion extends from the base end of the first member to the outside through a side hole or a slit, and is fixed. The member is provided with first holding means for holding the first member in a state in which the first member is not inserted into the second member, and second holding means for holding the first member in a state of being inserted into the second member. The inner diameter of the base end side of the member is larger than the outer diameter of the ligating member cutting means, and the fixed part The clearance between the diameter and the outer diameter of the engaging portion is a dimension that allows the ligating member to be clamped and fixed between them, and when the first member is inserted into the second member, the distal end of the ligating member cutting means is at the base end surface of the annular member. The operating device can be abutted, and the operating device is capable of advancing and retracting the sheath, an operating wire having a hook-shaped engaging member that can be moved back and forth in the lumen of the sheath and hooked on the folded portion, and the operating wire. A medical ligation apparatus, characterized in that the distal end of the sheath and the proximal end of the receiving member are coaxially engageable.

(付記26)付記25において、医療用結紮具を保持するシースと、このシースを進退させるための操作手段を有していることを特徴とする医療用結紮装置。   (Supplementary note 26) A medical ligation apparatus according to supplementary note 25, comprising: a sheath for holding a medical ligation tool; and an operating means for advancing and retracting the sheath.

(付記27)付記24〜26の何れかにおいて、第1部材の基端側で、かつ結紮部材の基端より先端側の折り返し部分の一部分が互いに固定されていることを特徴とする医療用結紮装置。   (Supplementary note 27) The medical ligation according to any one of supplementary notes 24 to 26, wherein a part of the folded portion on the proximal end side of the first member and on the distal end side from the proximal end of the ligating member is fixed to each other. apparatus.

(付記28)付記10〜27の何れかにおいて、固定部材の先端側の結紮部材がループ状に形成されていることを特徴とする医療用結紮装置。   (Supplementary note 28) The medical ligation apparatus according to any one of supplementary notes 10 to 27, wherein the ligation member on the distal end side of the fixing member is formed in a loop shape.

この発明の第1の実施形態の医療用結紮装置の全体を示し、先端部を断面した構成図。The block diagram which showed the whole medical ligation apparatus of 1st Embodiment of this invention, and cut | disconnected the front-end | tip part. 同実施形態を示し、医療用結紮装置の先端部の縦断側面図。The longitudinal cross-sectional side view of the front-end | tip part of the medical ligation apparatus which shows the same embodiment. 同実施形態を示し、医療用結紮装置の先端部の縦断側面図。The longitudinal cross-sectional side view of the front-end | tip part of the medical ligation apparatus which shows the same embodiment. 同実施形態を示し、医療用結紮装置の先端部の縦断側面図。The longitudinal cross-sectional side view of the front-end | tip part of the medical ligation apparatus which shows the same embodiment. 同実施形態を示し、結紮ワイヤによって病変部を結紮した状態の斜視図。The perspective view of the state which showed the embodiment and the lesioned part was ligated with the ligation wire. この発明の第2の実施形態を示し、医療用結紮装置の先端部の縦断側面図。The longitudinal side view of the front-end | tip part of the medical ligation apparatus which shows 2nd Embodiment of this invention. この発明の第3の実施形態を示し、医療用結紮装置の先端部の縦断側面図。The longitudinal side view of the front-end | tip part of the medical ligation apparatus which shows 3rd Embodiment of this invention. 同実施形態を示し、医療用結紮装置の先端部の縦断側面図。The longitudinal cross-sectional side view of the front-end | tip part of the medical ligation apparatus which shows the same embodiment. この発明の第4の実施形態を示し、医療用結紮装置の先端部の医療用結紮具の縦断側面図。The vertical side view of the medical ligation tool of the front-end | tip part of the medical ligation apparatus which shows 4th Embodiment of this invention. 同実施形態の医療用結紮装置の先端部の医療用結紮具の平面図。The top view of the medical ligation tool of the front-end | tip part of the medical ligation apparatus of the embodiment. 図9のA−A線に沿う断面図。Sectional drawing in alignment with the AA of FIG. 図9のB−B線に沿う断面図。Sectional drawing which follows the BB line of FIG. 図9のC−C線に沿う断面図。Sectional drawing which follows the CC line | wire of FIG. 同実施形態の結紮ワイヤを切断した状態の医療用結紮装置の先端部の医療用結紮具の縦断側面図。The longitudinal side view of the medical ligation tool of the front-end | tip part of the medical ligation apparatus of the state which cut | disconnected the ligation wire of the embodiment. この発明の第1の実施形態の変形例を示す医療用結紮装置の先端部の縦断側面図。The vertical side view of the front-end | tip part of the medical ligation apparatus which shows the modification of 1st Embodiment of this invention. この発明の第5の実施形態を示す医療用結紮装置の先端部の縦断側面図。The vertical side view of the front-end | tip part of the medical ligation apparatus which shows 5th Embodiment of this invention. 同実施形態の切断用シースの先端外観図。The front-end | tip external view of the sheath for cutting | disconnection of the embodiment. 同実施形態の結紮時の状態の斜視図。The perspective view of the state at the time of the ligation of the embodiment. この発明の第6の実施形態を示す医療用結紮装置の先端部の縦断側面図。The longitudinal side view of the front-end | tip part of the medical ligation apparatus which shows 6th Embodiment of this invention. 同実施形態を示し、図19におけるD矢視方向の外観図。The external view of the D arrow direction in FIG. 19 which shows the same embodiment.

符号の説明Explanation of symbols

2…医療用結紮具、7…内側シース(ガイドチャンネル)、18…結紮ワイヤ(結紮部材)、40…固定部材、41…第1の部材(内側部材)、42…第2の部材(外側部材)、44…圧入部(係合部) DESCRIPTION OF SYMBOLS 2 ... Medical ligation tool, 7 ... Inner sheath (guide channel), 18 ... Ligation wire (ligation member), 40 ... Fixing member, 41 ... 1st member (inner member), 42 ... 2nd member (outer member) ), 44 ... Press-fit portion (engagement portion)

Claims (4)

可撓性の線材からなり、生体組織に係合することで該生体組織を結紮する結紮部材と、
前記結紮部材に進退自在に設けられ、生体組織を結紮した状態で前記結紮部材を固定する固定部材と、
から成る医療用結紮具において、
前記固定部材は、
前記結紮部材を通す内腔を形成した先端部と、円筒形状の基端部と、先端側から基端側に向って前記先端部内から前記基端部内にわたり内挿された挿入軸と、を有した外側部材と、
前記外側部材の基端部内に前記軸方向へ移動可能に設けられ、前記外側部材の前記挿入軸が滑動可能に挿入できる中心孔を有し、先端側へ移動することで前記外側部材の前記内腔に侵入して前記内腔の内表面の少なくとも一部との間で前記内腔に通した前記結紮部材を挟持・固定可能な係合部を有した内側部材と、
を具備していることを特徴とする医療用結紮具。
A ligating member made of a flexible wire and ligating the living tissue by engaging with the living tissue;
A fixing member that is provided in the ligating member so as to freely advance and retract, and fixes the ligating member in a state in which a living tissue is ligated;
In a medical ligature consisting of
The fixing member is
A distal end formed with a lumen through which the ligating member is passed, a cylindrical proximal end, and an insertion shaft inserted from the distal end toward the proximal end from the distal end to the proximal end. An outer member,
A central hole is provided in the base end portion of the outer member so as to be movable in the axial direction, and the insertion shaft of the outer member can be slidably inserted. An inner member having an engaging portion capable of sandwiching and fixing the ligating member that penetrates the cavity and passes through the lumen with at least a part of the inner surface of the lumen;
A medical ligation tool characterized by comprising:
前記中心孔の内周面に、前記挿入軸の侵入に対して抵抗となる突起を形成したことを特徴とする請求項1記載の医療用結紮具。 The medical ligation tool according to claim 1 , wherein a protrusion that is resistant to intrusion of the insertion shaft is formed on an inner peripheral surface of the center hole . 前記外側部材の基端部に、前記内腔を通る前記結紮部材の基端側部分を通して前記外側部材の外側へ導く側孔と、前記外側部材の外側へ導かれた前記結紮部材の基端側部分を前記外側部材の内側へ導くガイドとを設けたことを特徴とする請求項1または請求項2に記載の医療用結紮具。 A side hole that leads to the outside of the outer member through a base end side portion of the ligating member that passes through the lumen, and a base end side of the ligating member that is led to the outside of the outer member. The medical ligation tool according to claim 1 or 2, further comprising a guide for guiding the portion to the inside of the outer member . 前記内腔に係合部が侵入し、前記結紮部材を固定するときの位置で互いに係合可能な係合爪と係合孔を前記内側部材と前記外側部材の両方にそれぞれ形成したことを特徴とする請求項1、請求項2または請求項3に記載の医療用結紮具。 Wherein the engaging portion in the lumen invades, were formed engageable with the engaging claw and the engaging hole with each other in position when fixing the ligating member to both the outer member and the inner member The medical ligation tool according to claim 1, claim 2, or claim 3.
JP2006291515A 2006-10-26 2006-10-26 Medical ligature Expired - Fee Related JP4500297B2 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000012014A1 (en) * 1998-08-31 2000-03-09 University Of Massachusetts Suture collet
JP2001502190A (en) * 1996-02-22 2001-02-20 スミス アンド ネフュー インコーポレーテッド Suture collet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001502190A (en) * 1996-02-22 2001-02-20 スミス アンド ネフュー インコーポレーテッド Suture collet
WO2000012014A1 (en) * 1998-08-31 2000-03-09 University Of Massachusetts Suture collet

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