JPH0727924Y2 - Grasping tool for endoscope - Google Patents
Grasping tool for endoscopeInfo
- Publication number
- JPH0727924Y2 JPH0727924Y2 JP1989068244U JP6824489U JPH0727924Y2 JP H0727924 Y2 JPH0727924 Y2 JP H0727924Y2 JP 1989068244 U JP1989068244 U JP 1989068244U JP 6824489 U JP6824489 U JP 6824489U JP H0727924 Y2 JPH0727924 Y2 JP H0727924Y2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- endoscope
- outer tube
- operation wire
- slider
- 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.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、内視鏡の鉗子チャンネルに挿通し、操作ワイ
ヤにて遠隔操作する把持具に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a grasping tool which is inserted into a forceps channel of an endoscope and is remotely operated by an operation wire.
［従来の技術］ 近時内視鏡の鉗子チャンネル内に挿通して遠隔操作にて
先端部の把持具を操作する内視鏡用把持具を記載した文
献としては例えば、実開昭62-128503号公報がある。こ
の公報に開示された技術は、第６図にて示すように、内
視鏡チャンネル内を挿通する外套管１に挿通した撚線か
らなる操作ワイヤ７を介して、先端に素線８で形成した
３本の爪９にて開閉自在に構成した把持部10の基端と、
上記操作ワイヤ７との境に硬化剤14を浸潤させて、操作
ワイヤ７と把持部10との境のホツレや広がりを防止構成
した技術である。[Prior Art] As a document describing a grasping tool for an endoscope which is recently inserted into a forceps channel of an endoscope and operates a grasping tool at a distal end by a remote operation, for example, Japanese Utility Model Laid-Open No. 62-128503. There is a gazette. The technique disclosed in this publication, as shown in FIG. 6, is formed by a wire 8 at the tip through an operation wire 7 made of a stranded wire inserted through an outer tube 1 inserted through an endoscope channel. With the base end of the grip portion 10 configured to be openable and closable by the three claws 9
This is a technique in which the hardener 14 is infiltrated into the boundary between the operation wire 7 and the boundary between the operation wire 7 and the grip portion 10 to prevent fraying or spreading.
上記外套管１の基端は、液体口金６を側面に有する送気
口金２の先端と接続している。また上記操作ワイヤ７の
基端は、上記送気口金２内を貫通して送気口金２の基端
と直列に接続構成した本体５の軸側面に軸方向に指掛け
にて摺動自在に構成されたスライダ４の中央部に装着さ
れて先端把持部10の開閉を遠隔にて操作するよう構成し
た技術である。The base end of the mantle tube 1 is connected to the tip of an air supply mouthpiece 2 having a liquid mouthpiece 6 on its side surface. The base end of the operation wire 7 penetrates the inside of the air supply mouthpiece 2 and is slidably attached to the axial side surface of the main body 5 connected in series with the base end of the air supply mouthpiece 2 in the axial direction by finger hooking. This is a technique in which the slider 4 is attached to the center of the slider 4 and the opening / closing of the tip grip 10 is remotely controlled.
［考案が解決しようとする課題］ 上記操作ワイヤと把持部との境に硬化剤を浸潤させる構
造においては、硬化剤を銀ローのように熱を加えて溶か
して浸潤させる方法は、溶解時に操作ワイヤと把持部材
とに変態温度以上の熱が加わるがため、硬化剤浸潤後、
硬化剤が浸潤した部位近傍の操作ワイヤと把持部が熱の
影響により柔らかくなり、変形しやすくなるという問題
がある。また硬化剤を接着剤のように変態温度以下で操
作ワイヤと把持部材とを浸潤させる方法では、硬化剤が
固まるまでに時間が多く必要とし、作業の効率が悪いば
かりか使用時に硬化剤の一部が割れて体内に脱落すると
いう虞れもある。本考案は、上記問題点に鑑みてなされ
たもので、操作ワイヤと把持部材とを変態温度以下で装
着し脱落の虞もなく、かつ操作ワイヤと把持部材とのホ
ツレや広がりを防止した把持具を提供することを目的と
する。[Problems to be Solved by the Invention] In the structure in which the hardener is infiltrated at the boundary between the operation wire and the gripping part, the method of melting and infiltrating the hardener by applying heat like a silver braze is performed at the time of melting. Since heat above the transformation temperature is applied to the wire and the gripping member, after infiltration with the curing agent,
There is a problem that the operation wire and the gripping portion near the portion where the curing agent has infiltrated become soft and easily deformed by the influence of heat. Further, in the method of infiltrating the operating wire and the gripping member with the curing agent at a temperature below the transformation temperature like the adhesive, it takes a long time for the curing agent to harden, which is not only inefficient in working but also causes a problem of the curing agent during use. There is also a risk that the parts will break and fall into the body. The present invention has been made in view of the above problems, and a gripping tool in which an operating wire and a gripping member are mounted at a temperature not higher than a transformation temperature without fear of falling off, and which prevents the operating wire and the gripping member from fraying or spreading. The purpose is to provide.
［課題を解決するための手段］ 本考案による内視鏡用把持具は、内視鏡の鉗子チャンネ
ル内に挿通可能な外套管と、複数のワイヤを撚ってな
り、上記外套管内に進退自在に挿通されると共に、先端
側の各ワイヤは撚らずに把持部を形成する操作ワイヤ
と、この操作ワイヤの上記撚られた部分と把持部との境
界付近の外周に被嵌し、操作ワイヤを固定して撚られた
部分のほつれを防止する補強部材とを具備したことを特
徴とする。[Means for Solving the Problems] The grasping tool for an endoscope according to the present invention comprises an outer tube that can be inserted into a forceps channel of an endoscope and a plurality of wires twisted together, and can be moved back and forth in the outer tube. Is inserted into the operation wire and the wires on the tip side do not twist to form a gripping portion, and the operation wire is fitted on the outer periphery near the boundary between the twisted portion and the gripping portion of the operation wire. And a reinforcing member for preventing the frayed portion of the twisted portion by fixing.
［実施例］ 本考案の実施例を図面に基づいて説明する。[Embodiment] An embodiment of the present invention will be described with reference to the drawings.
各実施例中同一部材、同一構成については同一符号を用
いて最初の実施例のみにおいて、その説明を行ない、他
の実施例には、これを省略する。In each of the embodiments, the same members and the same components are designated by the same reference numerals and only the first embodiment is described, and the description is omitted for the other embodiments.
（第１実施例） （構成） 第１図は、本考案の第１実施例を示す内視鏡用把持具の
先端部要部の側面の一部を断面にて示した平面図であ
る。第２図は、第１図の外套管の構成に把持部の挿入規
制手段を設けた例を示す先端部要部の側面の一部を断面
にて示した平面図である。図中において操作部は、上記
従来技術と同一構成につき省略した。(First Embodiment) (Structure) FIG. 1 is a plan view showing a cross section of a part of a side surface of a main part of a distal end portion of a grasping tool for an endoscope according to a first embodiment of the present invention. FIG. 2 is a plan view showing a cross section of a part of the side surface of the main part of the distal end portion showing an example in which an insertion restricting means for a grip portion is provided in the configuration of the outer tube of FIG. In the figure, the operation unit is omitted because it has the same configuration as the above-mentioned conventional technique.
内視鏡の挿通用チャンネルに挿通できる可撓管からなる
外套管１の基端には、トの字状の送液口金管２が連結さ
れ、さらにこの送液口金管２の基端には操作部３が連結
されている。この操作部３には径方向に構成されたスラ
イダ４とこれを連結する本体５とから成りそのスライダ
４を指で移動操作できるように構成されている。また送
液口金管２には外套管１と連通する液体注入口６が形成
されている。To the base end of the outer tube 1 made of a flexible tube that can be inserted into the insertion channel of the endoscope, a V-shaped liquid delivery mouth pipe 2 is connected, and at the base end of the liquid delivery mouth pipe 2. The operation unit 3 is connected. The operation portion 3 is composed of a slider 4 formed in the radial direction and a main body 5 connecting the slider 4 and the slider 4 can be moved and operated by a finger. A liquid injection port 6 that communicates with the outer tube 1 is formed in the liquid delivery mouth pipe 2.
また、外套管１の内部には可撓性の操作ワイヤ７が進退
自在に挿通され、その基端は操作部３のスライダ４に連
結されている。このため、上記したようにスライダ４を
進退移動すれば、操作ワイヤ７を進退操作できる。上記
操作ワイヤ７は複数の弾性素線８を撚って形成したもの
である。そして、上記操作ワイヤ７の先端部分の各素線
８は直線状に伸ばされ、操作ワイヤ７長手方向に対して
等間隔で放射状に常時開くように広げられている。さら
にこの広げられた各素線８の開放端先端は内方へ屈曲す
る爪９を形成して把持部10を構成している。つまり、把
持部10と操作ワイヤ７とは一体に形成されている。また
操作ワイヤ７と把持部10の境には図に示すように外套管
１の内径よりも小さい外径を有するパイプ状の補強部材
11が上記境を被うようにカシメ固定されている。A flexible operation wire 7 is inserted into the outer tube 1 so as to be able to move forward and backward, and its proximal end is connected to the slider 4 of the operation section 3. Therefore, the operation wire 7 can be moved back and forth by moving the slider 4 forward and backward as described above. The operation wire 7 is formed by twisting a plurality of elastic wires 8. The strands 8 of the distal end portion of the operation wire 7 are linearly extended and spread so as to be always open radially at equal intervals in the longitudinal direction of the operation wire 7. Further, the tips of the open ends of the respective unfolded wires 8 form inwardly bent claws 9 to form a grip portion 10. That is, the grip 10 and the operation wire 7 are integrally formed. At the boundary between the operation wire 7 and the grip portion 10, as shown in the figure, a pipe-shaped reinforcing member having an outer diameter smaller than the inner diameter of the outer tube 1.
11 is fixed by caulking so as to cover the above boundary.
（作用） 次に上述した構成に基づく作用を述べる。(Operation) Next, the operation based on the above-described configuration will be described.
この内視鏡把持鉗子を使用するにあたっては、まず体腔
内に挿入された内視鏡の挿通用チャンネルに外套管１を
挿入する。この際、把持部10はスライダ４を引くことで
外套管１内に引込み収納した状態となっている。そし
て、外套管１の先端を体腔内に突き出させて摘出しよう
とする異物、結石等に近づける。ここで操作部３のスラ
イダ４を先端側に押し進めることにより操作ワイヤ７の
先端に形成した把持部10は外套管１の先端より突出す
る。これにより把持部10の素線８は、それ自身の弾性復
元力により放射状に開き、異物、結石等を爪９によって
把持する。When using this endoscope grasping forceps, first, the outer tube 1 is inserted into the insertion channel of the endoscope inserted into the body cavity. At this time, the grip portion 10 is in a state of being retracted and stored in the outer tube 1 by pulling the slider 4. Then, the tip of the mantle tube 1 is projected into the body cavity and brought close to a foreign substance, a stone, or the like to be extracted. Here, by pushing the slider 4 of the operating portion 3 toward the distal end side, the grip portion 10 formed at the distal end of the operating wire 7 projects from the distal end of the outer tube 1. As a result, the strands 8 of the gripping portion 10 are radially opened by the elastic restoring force of the gripping portion 10, and foreign matter, stones, etc. are gripped by the claw 9.
そして、異物、結石等を保持したところで、操作部３の
スライダ４を後方へ引き把持部10を外套管１の口元に引
き寄せ、さらにスライダ４を強く引っ張ることにより異
物または結石等を確実に保持する。この状態で内視鏡ご
とに体腔外に引き出し摘出する。Then, when foreign matter, stones, etc. are held, the slider 4 of the operating portion 3 is pulled rearward to pull the gripping portion 10 toward the mouth of the outer tube 1, and the slider 4 is strongly pulled to securely hold foreign matter, stones, etc. . In this state, each endoscope is pulled out of the body cavity and extracted.
また、第２図に示すように外套管１内にパイプ形状で補
強部材11の内径より小径の内径に形成され規制部材12を
設け、把持部10を収納して閉じた際、補強部材11の基端
面が規制部材12の先端面に突き当たり、それ以上外套管
１内に侵入しないよう構成されている。Further, as shown in FIG. 2, a regulating member 12 having a pipe shape and having an inner diameter smaller than the inner diameter of the reinforcing member 11 is provided in the outer tube 1, and when the gripping portion 10 is housed and closed, the reinforcing member 11 is closed. The base end surface of the restriction member 12 abuts against the front end surface of the restriction member 12 so that the base end surface does not further enter the outer tube 1.
また、上記補強部材11のカシメは、第３図に示すカシメ
治具15によって強固に行なわれるようになっている。即
ち、３本の素線８を撚った場合の断面形状の外形は三角
形状となる。従って、治具15の基台18に対する押型17の
形状を三角凹部にし、これによって補強部材11のカシメ
付けを行ない、３本の素線８に対して補強部材11を断面
が三角形になるようにカシメ固定するようにしている。Further, the caulking of the reinforcing member 11 is performed firmly by the caulking jig 15 shown in FIG. That is, the outer shape of the cross-sectional shape when the three strands 8 are twisted is a triangular shape. Therefore, the shape of the pressing die 17 with respect to the base 18 of the jig 15 is formed into a triangular concave portion, whereby the reinforcing member 11 is caulked so that the reinforcing member 11 has a triangular cross section with respect to the three strands 8. I try to fix it by caulking.
（第２実施例） （構成） 第４図は、本考案の第２実施例を示したバスケット状把
持部の先端部分の構成要素とその作用とを示す斜視図で
ある。(Second Embodiment) (Structure) FIG. 4 is a perspective view showing the components of the distal end portion of the basket-shaped gripping portion and the operation thereof according to the second embodiment of the present invention.
第４図に示すように先端部の把持部10が螺旋型のバスケ
ット13で形成され、その基端と撚線よりなる操作ワイヤ
７との境に補強部材11が変態温度以下の常温で筒状に丸
くなるよう記憶された形状記憶合金の板で巻き付け構成
して固定される。As shown in FIG. 4, the grip portion 10 at the tip is formed of a spiral basket 13, and the reinforcing member 11 is tubular at room temperature below the transformation temperature at the boundary between the base end and the operation wire 7 made of a twisted wire. It is fixed by wrapping it with a plate of shape memory alloy that is memorized to be round.
（作用） 上記構成に基づく作用を述べる 体腔内に挿入された内視鏡の鉗子等の挿通チャンネルに
外套管１を挿入する。この際把持部10はスライダ４を引
き外套管１内に引込み収納した状態となっている。更
に、外套管１の先端を体腔内に突出させ摘出しようとす
る目的の異物に近づけると共に操作部３のスライダ４を
先端側に押し進めることにより、操作ワイヤ７の先端に
形成した把持部10は、外套管１の先端より突出し、把持
部10のバスケット13は弾性復元力により大きく開いた
（バスケット）形状となり異物、結石など目的物をバス
ケット13内に収納保持したところで操作部３のスライダ
４を後方へ引き把持部10を外套管１の挿入口端に引き寄
せ、更にスライダ４を強く引っ張ることにより異物また
は結石等を確実に保持する。この状態で内視鏡ごと体腔
外に引き出し摘出する。(Operation) The operation based on the above configuration will be described. The outer tube 1 is inserted into the insertion channel of the forceps or the like of the endoscope inserted into the body cavity. At this time, the grip portion 10 is in a state in which the slider 4 is pulled and housed in the outer sheath tube 1. Furthermore, the distal end of the mantle tube 1 is projected into the body cavity to approach a foreign object to be extracted, and the slider 4 of the operating portion 3 is pushed toward the distal end side, whereby the grip portion 10 formed at the distal end of the operating wire 7 is The basket 13 protruding from the tip of the outer tube 1 and the basket 13 of the grip portion 10 has a large open (basket) shape due to the elastic restoring force. The pulling and gripping portion 10 is drawn to the insertion opening end of the outer tube 1, and the slider 4 is strongly pulled to securely hold foreign matters, stones and the like. In this state, the entire endoscope is pulled out of the body cavity and extracted.
（第３実施例） （構成） 第５図は、本考案の第３実施例を示したループ状把持具
を有するスネア鉗子の先端部分の要部断面を示す平面図
である。(Third Embodiment) (Structure) FIG. 5 is a plan view showing a cross section of a main part of a tip portion of a snare forceps having a loop-shaped grasping tool according to a third embodiment of the present invention.
外套管１の先端より出入構成した２本の操作ワイヤ７の
先端を折り返して円形のループ形状を形成した把持部10
と操作ワイヤ７との境に熱収縮チューブより形成された
補強部材11を被覆して熱収縮にて密着固定構成されてい
る。A grip portion 10 in which a circular loop shape is formed by folding back the tips of two operation wires 7 that are configured to come in and out from the tip of the outer tube 1.
A reinforcing member 11 formed of a heat-shrinkable tube is coated on the boundary between the operation wire 7 and the operation wire 7 to be tightly fixed by heat-shrinking.
（作用） 上記構成に基づく作用を述べる。(Operation) An operation based on the above configuration will be described.
この内視鏡把持鉗子を使用するにあたっては、まず体腔
内に挿入された内視鏡の挿通用チャンネルに外套管１を
挿入する。この際、把持部10はスライダ４を引くことで
外套管１内に引き込み収納した状態となっている。そし
て、外套管１の先端を体腔内に突き出させて摘出しよう
とするポリープ等の異物等に近づける。ここで操作部３
のスライダ４を先端側に押し進めることにより操作ワイ
ヤ７の先端に形成した把持部10は外套管１の先端より突
出する。これにより把持部10のループは、それ自身の弾
性復元力により円形状に開き、異物等をループ内に入れ
る。When using this endoscope grasping forceps, first, the outer tube 1 is inserted into the insertion channel of the endoscope inserted into the body cavity. At this time, the grip portion 10 is in a state of being retracted and housed in the outer tube 1 by pulling the slider 4. Then, the distal end of the mantle tube 1 is projected into the body cavity and brought close to a foreign substance such as a polyp to be extracted. Here, the operation unit 3
By pushing the slider 4 toward the tip side, the grip portion 10 formed at the tip of the operation wire 7 projects from the tip of the outer tube 1. As a result, the loop of the grip portion 10 opens into a circular shape due to its own elastic restoring force, and foreign matter and the like enter the loop.
そして、操作部３のスライダ４を後方へ引き把持部10を
外套管１の口元に引き寄せ、さらにスライダ４を強く引
っ張ることによりポリープ等の異物を確実に保持する。
次いで、高周波電流を流して異物を焼灼し、内視鏡ごと
体腔内に引き出し摘出される。Then, the slider 4 of the operation portion 3 is pulled backward, the grip portion 10 is drawn toward the mouth of the outer tube 1, and the slider 4 is strongly pulled to securely hold foreign matters such as polyps.
Next, a high-frequency current is passed to cauterize the foreign matter, and the whole endoscope is extracted and extracted into the body cavity.
［考案の効果］ 上記構成による本考案によれば、操作ワイヤと、把持部
との境の補強部材を、操作ワイヤと把持部とを変態温度
以下にて固定したので、操作ワイヤと把持部とは変形し
ない。また操作ワイヤと把持部との境のホツレも防止で
きるという効果を有する。[Advantages of the Invention] According to the present invention having the above-mentioned configuration, since the reinforcing member at the boundary between the operation wire and the grip portion is fixed at the transformation temperature or lower, the operation wire and the grip portion are fixed. Does not deform. Further, there is an effect that it is possible to prevent the boundary between the operation wire and the grip portion from fraying.
第１図は、本考案の第１実施例を示す内視鏡把持具の先
端部要部の側面の一部を断面にて示した平面図、 第２図は、第１図に示す外套管の構成に把持部の挿入規
制手段を設けた先端部要部の側面の一部を断面にて示し
た平面図、 第３図は、補強部材のカシメを、より強固にするための
カシメ治具の一例を示す要部拡大側面図、 第４図は、本考案の第２実施例を示したバスケット状把
持部の先端部分の構成要素とその作用とを示す斜視図、 第５図は、本考案の第３実施例を示したループ状把持具
の先端部分の構成要部を示す側面よりの断面図、 第６図は、従来の内視鏡用把持具を示す一部切欠部分断
面図である。 １……外套管 ７……操作ワイヤ ８……素線 ９……爪 10……把持部 11……補強部材 13……バスケット 15……カシメ治具FIG. 1 is a plan view showing a part of a side surface of a main part of a distal end portion of an endoscope grasping tool showing a first embodiment of the present invention in section, and FIG. 2 is a mantle tube shown in FIG. FIG. 3 is a plan view showing a cross section of a part of the side surface of the main part of the distal end portion in which the insertion restricting means for the gripping portion is provided in FIG. 3, and FIG. 3 is a caulking jig for strengthening the caulking of the reinforcing member. FIG. 4 is an enlarged side view of an essential part showing an example, FIG. 4 is a perspective view showing components and operation of a tip end portion of the basket-like gripping part showing the second embodiment of the present invention, and FIG. FIG. 6 is a partially cutaway partial sectional view showing a conventional endoscopic grasping tool, showing a configurational part of a distal end portion of a loop-shaped grasping tool showing a third embodiment of the invention. is there. 1 ... Mantle tube 7 ... Operation wire 8 ... Element wire 9 ... Claw 10 ... Grip 11 ... Reinforcing member 13 ... Basket 15 ... Caulking jig
Claims (1)
套管と、 複数のワイヤを撚ってなり、上記外套管内に進退自在に
挿通されると共に、先端側の各ワイヤは撚らずに把持部
を形成する操作ワイヤと、 この操作ワイヤの上記撚られた部分と把持部との境界付
近の外周に被嵌し、操作ワイヤを固定して撚られた部分
のほつれを防止する補強部材と、 を具備したことを特徴とする内視鏡用把持具。1. An outer tube that can be inserted into a forceps channel of an endoscope and a plurality of wires are twisted, and the wire is inserted into the outer tube so as to be able to advance and retract, and each wire on the tip side is not twisted. An operating wire that forms a grip portion on the back, and a reinforcing member that is fitted around the boundary between the twisted portion and the grip portion of the operation wire to fix the operation wire to prevent the twisted portion from fraying. An endoscopic grasping tool comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989068244U JPH0727924Y2 (en) | 1989-06-12 | 1989-06-12 | Grasping tool for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989068244U JPH0727924Y2 (en) | 1989-06-12 | 1989-06-12 | Grasping tool for endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH037805U JPH037805U (en) | 1991-01-25 |
| JPH0727924Y2 true JPH0727924Y2 (en) | 1995-06-28 |
Family
ID=31602509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989068244U Expired - Lifetime JPH0727924Y2 (en) | 1989-06-12 | 1989-06-12 | Grasping tool for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0727924Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4575709B2 (en) * | 2004-05-14 | 2010-11-04 | Ｈｏｙａ株式会社 | Endoscopic high-frequency treatment instrument |
| JP6324209B2 (en) * | 2014-05-21 | 2018-05-16 | 株式会社八光 | Minimally invasive surgical instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062663Y2 (en) * | 1987-12-15 | 1994-01-26 | 旭光学工業株式会社 | Endoscope sampling tool |
-
1989
- 1989-06-12 JP JP1989068244U patent/JPH0727924Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH037805U (en) | 1991-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |