JP3091420B2 - Endoscope treatment tool - Google Patents
Endoscope treatment toolInfo
- Publication number
- JP3091420B2 JP3091420B2 JP08276112A JP27611296A JP3091420B2 JP 3091420 B2 JP3091420 B2 JP 3091420B2 JP 08276112 A JP08276112 A JP 08276112A JP 27611296 A JP27611296 A JP 27611296A JP 3091420 B2 JP3091420 B2 JP 3091420B2
- Authority
- JP
- Japan
- Prior art keywords
- operating
- long pipe
- coupling
- attachment
- rod
- 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 - Fee Related
Links
Landscapes
- Endoscopes (AREA)
- Surgical Instruments (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内視鏡用処置具に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment tool for an endoscope.
【０００２】[0002]
【従来の技術】従来より、この種の内視鏡用処置具とし
ては、例えば、特開平７−３１６２３号公報に示される
ような構成のものが提案されている。即ち、この内視鏡
用処置具は、操作機構と、操作機構に設けられた長尺パ
イプと、長尺パイプの先端に設けられた鉗子等の処置部
とから構成されている。長尺パイプ内にはその軸線方向
に延びるロッドが収容され、ロッドの一端は操作機構に
作動連結され、他端は処置部に連結されている。そし
て、操作機構を操作すると、ロッドが長尺パイプの軸線
方向に沿って動作することにより、処置部が動作するよ
うになっている。前記長尺パイプの先端内周面には雌ネ
ジ部が形成されている。又、前記処置部の基端外周面に
は雄ネジ部が形成されている。そして、長尺パイプの雌
ネジ部に処置部の雄ネジ部が螺合され、長尺パイプの先
端に対し処置部が着脱可能となっている。そして、内視
鏡用処置具を使用した後において処置部を廃棄するに
は、処置部を回して雌ネジ部から雄ネジ部を螺退するこ
とにより、長尺パイプから処置部を取り外していた。逆
に、新しい処置部を長尺の先端に取り付けるには、処置
部を取り外す場合とは反対方向に回して雌ネジ部に雄ネ
ジ部を螺合していた。2. Description of the Related Art Conventionally, as a treatment tool for an endoscope of this type, for example, one having a configuration as disclosed in JP-A-7-31623 has been proposed. That is, the treatment tool for an endoscope includes an operation mechanism, a long pipe provided in the operation mechanism, and a treatment section such as forceps provided at a tip of the long pipe. A rod extending in the axial direction is accommodated in the long pipe, and one end of the rod is operatively connected to the operation mechanism, and the other end is connected to the treatment section. When the operating mechanism is operated, the treatment section operates by the rod operating along the axial direction of the long pipe. A female screw portion is formed on the inner peripheral surface of the distal end of the long pipe. A male screw portion is formed on the outer peripheral surface of the proximal end of the treatment section. The male thread of the treatment section is screwed into the female thread of the long pipe, and the treatment section is detachable from the distal end of the long pipe. Then, in order to discard the treatment section after using the treatment tool for an endoscope, the treatment section was removed from the long pipe by turning the treatment section and retreating the male screw section from the female screw section. . Conversely, in order to attach a new treatment section to the long end, the treatment section is turned in the opposite direction to the removal of the treatment section, and the male screw section is screwed into the female screw section.
【０００３】[0003]
【発明が解決しようとする課題】ところが、前記内視鏡
用処置具においては、長尺パイプの先端から処置部を着
脱するのに、雌ネジ部と雄ネジ部との螺合関係により着
脱していたため、その着脱作業が面倒であるという問題
があった。However, in the treatment tool for an endoscope, when the treatment section is attached to and detached from the end of the long pipe, the treatment instrument is attached and detached by a screwing relationship between a female screw section and a male screw section. Therefore, there is a problem that the attaching and detaching work is troublesome.
【０００４】そこで、本発明は、操作機構に対して処置
部を簡単に着脱することを目的とした。Accordingly, an object of the present invention is to easily attach / detach a treatment section to / from an operation mechanism.
【０００５】[0005]
【０００６】[0006]
【０００７】[0007]
【０００８】[0008]
【０００９】[0009]
【課題を解決するための手段】 請求項１に記載の発明に
よれば、操作機構に長尺部材を設け、同長尺部材内には
前記操作機構の操作に連動する連動部材を設け、連動部
材の先端に処置部を駆動連結し、この処置部を操作機構
により遠隔操作して作動させるようにし、前記操作機構
に対して長尺部材を着脱可能に連結するための第１の着
脱機構と、前記操作機構に対して連動部材の基端を着脱
可能に連結するための第２の着脱機構とを備え、前記第
１の着脱機構にあっては、前記長尺部材の被係合部に対
し係合可能な係合部を操作部材の一端に設け、前記係合
部が被係合部に係合する係合位置と、被係合部から係合
解除する係合解除位置とを取り得るように、前記操作部
材を軸により回動可能に支持し、操作部材の他端には前
記係合部を係合位置側に付勢する第１の弾性部材を設け
るとともに、前記第２の着脱機構にあっては、前記連動
部材の基端には係止部を設け、前記操作機構には前記係
止部に連結可能な結合部材を設け、この結合部材を、連
動部材が操作機構に対し連結される連結位置と、連動部
材が操作機構に対し連結解除される連結解除位置とを取
り得るように移動可能にし、前記結合部材の移動経路上
には同結合部材を連結位置側に付勢する第２の弾性部材
を設けたことを要旨とする。According to the invention described in claim 1 SUMMARY OF THE INVENTION, provided elongate member to the operating mechanism, is in the elongate member is provided an interlocking member interlocked with the operation of the operation mechanism, interlock A first attachment / detachment mechanism for drivingly connecting the treatment section to the distal end of the member, operating the treatment section by remote operation using an operation mechanism, and detachably connecting the long member to the operation mechanism; A second attachment / detachment mechanism for detachably connecting the base end of the interlocking member to the operation mechanism, and in the first attachment / detachment mechanism, An engaging portion engageable with the operating member is provided at one end of the operating member, and an engaging position at which the engaging portion engages with the engaged portion and a disengaging position at which the engaging portion is disengaged from the engaged portion are taken. The operating member is rotatably supported by a shaft so that the engaging portion is engaged with the other end of the operating member. A first elastic member biasing to the side, and in the second attaching / detaching mechanism, a locking portion is provided at a base end of the interlocking member, and the operating mechanism is connected to the locking portion. Providing a possible coupling member, making the coupling member movable so as to be able to take a coupling position where the interlocking member is coupled to the operating mechanism and a disconnection position where the interlocking member is disconnected from the operating mechanism, The gist is that a second elastic member for urging the coupling member toward the coupling position is provided on the moving path of the coupling member.
【００１０】従って、請求項１に記載の発明によれば、
第１の弾性部材の付勢力が加えられて、操作部材が係合
位置に回動操作されると、係合部が係合位置に位置され
ることにより、操作機構に長尺部材が連結される。それ
とともに、第２の弾性部材の付勢力が加えられて、結合
部材が連結位置に移動されると、操作機構に連動部材が
連結される。又、第１の弾性部材の付勢力に抗して操作
部材が係合解除位置に回動操作されると、係合部が係合
解除位置に位置されることにより、操作機構から長尺部
材が連結解除される。第２の弾性部材の付勢力に抗して
結合部材が連結解除位置に移動れると、操作機構に対し
て連動部材が連結解除される。Therefore, according to the first aspect of the present invention,
When the urging force of the first elastic member is applied and the operation member is rotated to the engagement position, the elongate member is connected to the operation mechanism by the engagement portion being located at the engagement position. You. At the same time, when the urging force of the second elastic member is applied to move the coupling member to the coupling position, the interlocking member is coupled to the operation mechanism. Further, when the operating member is rotated to the disengaged position against the urging force of the first elastic member, the engaging member is positioned at the disengaged position, and the elongate member is moved from the operating mechanism. Is disconnected. When the coupling member moves to the disconnection position against the urging force of the second elastic member, the interlocking member is disconnected from the operation mechanism.
【００１１】[0011]
【発明の実施の形態】以下、本発明を具体化した一実施
形態を図面に基づいて説明する。図１（ａ），図２に示
すように、内視鏡用処置具１は、操作機構２と、操作機
構２に設けられた長尺パイプ（長尺部材）３と、長尺パ
イプ３の先端に設けられた鉗子（処置部）４とから構成
されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1A and 2, an endoscope treatment tool 1 includes an operation mechanism 2, a long pipe (a long member) 3 provided in the operation mechanism 2, and a long pipe 3. And a forceps (treatment section) 4 provided at the distal end.
【００１２】前記操作機構２は、前後方向に対向配置さ
れた前側ハンドル５と後側ハンドル６とから構成され、
両ハンドル部５，６の基端は支軸７により開閉可能に連
結されている。両ハンドル部５，６の先端外側面には指
掛け環５ａ，６ａがそれぞれ形成されている。The operating mechanism 2 comprises a front handle 5 and a rear handle 6 which are arranged to face each other in the front-rear direction.
The base ends of the handle portions 5 and 6 are connected by a support shaft 7 so as to be openable and closable. Finger hanging rings 5a, 6a are formed on the outer surfaces of the distal ends of the handle portions 5, 6, respectively.
【００１３】前記前側ハンドル５の上端には前後方向へ
延びる筒部５ｂが形成され、この筒部５ｂの上部には電
極８が取り付けられ、電極８の下端は筒部５ｂ内に挿入
されている。筒部５ｂ内には前後方向に延びる支持筒９
が挿入固定され、この支持筒９の先端は筒部５ｂの先端
よりも前方に突出している。支持筒９の先端には第１の
着脱機構１０が設けられ、この第１の着脱機構１０には
前記長尺パイプ３が着脱可能に連結されている。長尺パ
イプ３は絶縁性の合成樹脂からなり、同長尺パイプ３の
内部にはその軸線方向に延びるロッド（連動部材）１１
が設けられている。このロッド１１は前記電極８の内端
に図示しない接触片を介して接触している。そして、電
極部８から流された電流は、ロッド１１を介して鉗子４
に導通されるようになっている。A cylindrical portion 5b extending in the front-rear direction is formed at an upper end of the front handle 5, and an electrode 8 is mounted on an upper portion of the cylindrical portion 5b, and a lower end of the electrode 8 is inserted into the cylindrical portion 5b. . A support tube 9 extending in the front-rear direction is provided in the tube portion 5b.
Is inserted and fixed, and the front end of the support tube 9 projects forward from the front end of the tube portion 5b. A first attachment / detachment mechanism 10 is provided at the tip of the support cylinder 9, and the long pipe 3 is detachably connected to the first attachment / detachment mechanism 10. The long pipe 3 is made of an insulating synthetic resin, and has a rod (an interlocking member) 11 extending in the axial direction inside the long pipe 3.
Is provided. The rod 11 is in contact with the inner end of the electrode 8 via a contact piece (not shown). The current flowing from the electrode section 8 is applied to the forceps 4 via the rod 11.
Is conducted.
【００１４】図１（ａ），（ｂ）に示すように、前記ロ
ッド１１の前端には開閉リンク機構１２を介して前記鉗
子４が設けられている。開閉リンク機構１２において
は、ロッド１１の前端に連結リンク１３が設けられ、同
連結リンク１３には永久中心軸１４により開閉リンク１
５，１６が回動可能に連結されている。前記長尺パイプ
３にはその先端開口部３ａから前方へ突出するように一
対の刃体１７，１８が設けられている。両刃体１７，１
８は長尺パイプ３の先端に固定された固定中心軸１９に
より回動可能に支持されている。両刃体１７，１８の基
端は永久支軸２０，２１を介して前記開閉リンク１５，
１６に連結され、その永久支軸２０，２１により両刃体
１７，１８と開閉リンク１５，１６はそれぞれ相対回動
可能に連結されている。又、前記後側ハンドル６の上端
には第２の着脱機構２２が設けられ、第２の着脱機構２
２にはロッド１１の後端が着脱可能に連結されている。As shown in FIGS. 1A and 1B, the forceps 4 are provided at the front end of the rod 11 via an opening / closing link mechanism 12. In the opening / closing link mechanism 12, a connecting link 13 is provided at the front end of the rod 11, and the connecting link 13 is connected to the opening / closing link 1 by a permanent center shaft 14.
5 and 16 are rotatably connected. The long pipe 3 is provided with a pair of blades 17 and 18 so as to protrude forward from the distal end opening 3a. Double blade body 17,1
Numeral 8 is rotatably supported by a fixed central shaft 19 fixed to the end of the long pipe 3. The base ends of the two blades 17 and 18 are connected to the opening / closing link 15 via permanent support shafts 20 and 21.
The two blades 17, 18 and the open / close links 15, 16 are connected to each other by their permanent support shafts 20, 21 so as to be relatively rotatable. A second attachment / detachment mechanism 22 is provided at the upper end of the rear handle 6.
The rear end of the rod 11 is detachably connected to 2.
【００１５】そして、操作機構２により遠隔操作してロ
ッド１１が後方に引かれると、前記開閉リンク機構１２
においてその固定中心軸１９から永久中心軸１４が離
れ、前記刃体１７，１８が互いに閉じる。又、操作機構
２により遠隔操作してロッド１１が前方に押されると、
前記開閉リンク機構１２においてその固定中心軸１９に
永久中心軸１４が近づき、前記両刃体１７，１８が互い
に開く。When the rod 11 is pulled rearward by remote control by the operating mechanism 2, the opening / closing link mechanism 12
At this time, the permanent center axis 14 is separated from the fixed center axis 19, and the blade bodies 17, 18 close to each other. Also, when the rod 11 is pushed forward by remote control by the operation mechanism 2,
In the opening / closing link mechanism 12, the permanent center axis 14 approaches the fixed center axis 19, and the two blades 17, 18 open from each other.
【００１６】次に、第１の着脱機構１０について詳細に
説明する。図３、図４（ａ）〜（ｃ）に示すように、胴
体フレーム２３の前端には挿入管２４が前方に突設され
ている。胴体フレーム２３内には前後方向に延びる貫通
孔２３ａが形成され、この貫通孔２３ａは前記挿入管２
４に連通されている。貫通孔２３ａの前方からは前記長
尺パイプ３の基端が挿入管２４を介して抜き差し可能に
挿入され、後方からは前記支持筒９の前端が挿入されて
いる。そして、貫通孔２３ａ内において長尺パイプ３の
基端が支持筒９の先端に当接されることにより、長尺パ
イプ３の位置決めがなされる。又、前記挿入管２４の前
端内側面にはキー２４ａが突設されている。図２に示す
ように、長尺パイプ３の基端外側面にはその軸線方向に
延びるキー溝３ｂが形成されている。そして、長尺パイ
プ３が挿入管２４内に挿入される際において、前記キー
２４ａがキー溝３ｂに係入されることにより、長尺パイ
プ３は挿入ガイドされるようになっている。Next, the first attaching / detaching mechanism 10 will be described in detail. As shown in FIGS. 3 and 4A to 4C, an insertion tube 24 is provided at the front end of the body frame 23 so as to protrude forward. A through hole 23a extending in the front-rear direction is formed in the body frame 23, and the through hole 23a
4 is connected. From the front of the through hole 23a, the base end of the long pipe 3 is removably inserted via an insertion tube 24, and from the rear, the front end of the support cylinder 9 is inserted. The long pipe 3 is positioned by the base end of the long pipe 3 abutting on the distal end of the support tube 9 in the through hole 23a. A key 24a is protruded from the inner surface of the front end of the insertion tube 24. As shown in FIG. 2, a keyway 3 b extending in the axial direction is formed on a base outer surface of the long pipe 3. When the long pipe 3 is inserted into the insertion pipe 24, the key 24a is engaged with the key groove 3b so that the long pipe 3 is inserted and guided.
【００１７】図３、図４（ａ）〜（ｃ）に示すように、
前記胴体フレーム２３の後端外側面には一対の取付凹部
２５ａ，２５ｂが対向して形成されている。胴体フレー
ム２３における取付凹部２５ａ，２５ｂの底には、同一
円周上に等間隔をおいて複数の連通孔２６ａ〜２６ｃが
形成され、各連通孔２６ａ〜２６ｃ同士は胴体フレーム
２３の中心に向けて放射状に配置されている。各連通孔
２６ａ〜２６ｃ内にはボール２７ａ〜２７ｃと圧縮コイ
ルバネ２８ａ〜２８ｃが挿入されている。各ボール２７
ａ〜２７ｃは、前記支持筒９の外周面に形成された環状
溝９ａに係入されている。前記両取付凹部２５ａ，２５
ｂにはＣリング２９がはめ込まれており、このＣリング
２９の内側面にて前記圧縮コイルバネ２８ａ〜２８ｃが
押圧されている。即ち、各圧縮コイルバネ２８ａ〜２８
ｃが圧縮されることにより、各ボール２７ａ〜２７ｃが
環状溝９ａから外れないようになっている。そのため、
胴体フレーム２３全体は支持筒９を中心にして左右方向
へ回動自在に支持されている。As shown in FIGS. 3 and 4 (a) to 4 (c),
A pair of mounting recesses 25a and 25b are formed on the outer surface of the rear end of the body frame 23 so as to face each other. A plurality of communication holes 26a to 26c are formed at equal intervals on the same circumference at the bottom of the mounting recesses 25a and 25b in the body frame 23, and the communication holes 26a to 26c are directed toward the center of the body frame 23. Are arranged radially. Balls 27a to 27c and compression coil springs 28a to 28c are inserted into the communication holes 26a to 26c. Each ball 27
a to 27c are engaged with an annular groove 9a formed on the outer peripheral surface of the support cylinder 9. The mounting recesses 25a, 25
A C-ring 29 is fitted in b, and the compression coil springs 28a to 28c are pressed on the inner surface of the C-ring 29. That is, each of the compression coil springs 28a to 28
The compression of c prevents the balls 27a to 27c from coming off the annular groove 9a. for that reason,
The entire body frame 23 is supported rotatably in the left-right direction about the support cylinder 9.
【００１８】前記胴体フレーム２３の外側面における両
取付凹部２５ａ，２５ｂの両端間には、前後方向へ延び
る一対の取付溝３０ａ，３０ｂが対向して形成されてい
る。前記Ｃリング２９の内側における各取付溝３０ａ，
３０ｂには、操作片（操作部材）３１ａ，３１ｂがそれ
ぞれはめ込まれている。各操作片３１ａ，３１ｂの中央
にはピン３２が貫通され、そのピン３２の両端は各取付
溝３０ａ，３０ｂの両側に固定されている。そして、両
操作片３１ａ，３１ｂはピン３２を中心にして回動可能
となっている。A pair of mounting grooves 30a, 30b extending in the front-rear direction are formed between both ends of the mounting recesses 25a, 25b on the outer surface of the body frame 23 so as to face each other. Each of the mounting grooves 30a inside the C ring 29,
Operation pieces (operation members) 31a and 31b are fitted into 30b, respectively. A pin 32 passes through the center of each of the operation pieces 31a and 31b, and both ends of the pin 32 are fixed to both sides of each of the mounting grooves 30a and 30b. The operation pieces 31a and 31b are rotatable about the pin 32.
【００１９】両操作片３１ａ，３１ｂの外側面において
ピン３２よりも後方側には溝部３３ａ，３３ｂが形成さ
れ、各溝部３３ａ，３３ｂには前記Ｃリング２９が係入
可能となっている。両操作片３１ａ，３１ｂの後端内側
面にはバネ収容穴３４ａ，３４ｂが形成されている。前
記各取付溝３０ａ，３０ｂの内奥部において各バネ収容
穴３４ａ，３４ｂに対向する位置には、バネ収容凹部３
５ａ，３５ｂが形成されている。バネ収容穴３４ａ，３
４ｂとバネ収容凹部３５ａ，３５ｂには、圧縮バネ（第
１の弾性部材）３６ａ，３６ｂが収容されている。Grooves 33a, 33b are formed on the outer surfaces of the operation pieces 31a, 31b behind the pin 32, and the C-ring 29 can be engaged in the grooves 33a, 33b. Spring receiving holes 34a, 34b are formed on the inner surfaces of the rear ends of both operation pieces 31a, 31b. A spring receiving recess 3 is provided at a position facing the spring receiving holes 34a and 34b in the inner deep portion of each of the mounting grooves 30a and 30b.
5a and 35b are formed. Spring receiving holes 34a, 3
The compression springs (first elastic members) 36a and 36b are housed in the spring housing 4b and the spring housing recesses 35a and 35b.
【００２０】前記各操作片３１ａ，３１ｂの先端内側面
には、係合爪（係合部）３７ａ，３７ｂが前記長尺パイ
プ３の中心側に向け、かつ互いに対向するように突設さ
れている。前記各取付溝３０ａ，３０ｂの前端内奥部に
は、胴体フレーム２３の貫通孔２３ａに連通した透孔３
８ａ，３８ｂがそれぞれ形成されている。この透孔３８
ａ，３８ｂには前記各係合爪３７ａ，３７ｂが操作片３
１ａ，３１ｂの回動方向に沿って位置ずれ可能に係入さ
れている。Engaging claws (engaging portions) 37a, 37b project from the inner surfaces of the distal ends of the operation pieces 31a, 31b toward the center of the long pipe 3 so as to face each other. I have. A through-hole 3 communicating with the through-hole 23a of the body frame 23 is provided in the inner portion at the front end of each of the mounting grooves 30a and 30b.
8a and 38b are formed respectively. This through hole 38
The engagement pawls 37a, 37b are respectively provided on the operating pieces 3a, 38b.
It is engaged so that it can be displaced along the rotation direction of 1a, 31b.
【００２１】図２，図４（ａ）〜（ｃ）に示すように、
前記長尺パイプ３の基端外側面における透孔３８ａ，３
８ｂに対応する位置には、一対の係合凹部（被係合部）
３９ａ，３９ｂが対向して形成され、各係合凹部３９
ａ，３９ｂは互いに平行に延びている。この係合凹部３
９ａ，３９ｂ内には前記各係合爪３７ａ，３７ｂが係入
可能となっている。As shown in FIGS. 2 and 4 (a) to 4 (c),
Through holes 38a, 38 in the base outer surface of the long pipe 3
8b, a pair of engaging concave portions (engaged portions)
39a, 39b are formed facing each other, and each engagement recess 39
a and 39b extend in parallel with each other. This engagement recess 3
Each of the engaging claws 37a, 37b can be engaged in 9a, 39b.
【００２２】そして、図４（ａ）に示すように、操作片
３１ａ，３１ｂの先端が最も接近した位置では、係合爪
３７ａ，３７ｂが、圧縮バネ３６ａ，３６ｂの弾性力が
加えられて、係合凹部３９ａ，３９ｂ内に係合保持され
るようになっている。又、図４（ｂ）に示すように、操
作片３１ａ，３１ｂの先端が最も離間した位置では、係
合爪３７ａ，３７ｂが、圧縮バネ３６ａ，３６ｂの弾性
力に抗して、係合凹部３９ａ，３９ｂから抜け出るよう
になっている。即ち、操作片３１ａ，３１ｂ基端の押圧
操作により、係合爪３７ａ，３７ｂは、係合凹部３９
ａ，３９ｂに係合する係合位置（図４（ａ）に示す位
置）Ａと、係合凹部３９ａ，３９ｂから抜け出て係合解
除する係合解除位置（図４（ｂ）に示す位置）Ｂとを取
り得るようになっている。As shown in FIG. 4 (a), at the position where the tips of the operation pieces 31a and 31b are closest, the engaging claws 37a and 37b apply the elastic force of the compression springs 36a and 36b, The engagement recesses 39a and 39b are engaged and held. In addition, as shown in FIG. 4B, at the position where the tips of the operation pieces 31a and 31b are farthest apart, the engagement claws 37a and 37b are pressed against the elastic force of the compression springs 36a and 36b, and 39a, 39b. That is, by the pressing operation of the base ends of the operation pieces 31a and 31b, the engagement claws 37a and 37b
a and 39b (position shown in FIG. 4 (a)), and an engagement release position where it comes out of the engagement recesses 39a and 39b and is released (position shown in FIG. 4 (b)). B can be taken.
【００２３】次に、第２の着脱機構２２について詳細に
説明する。図３、図５（ａ），（ｂ）に示すように、後
側ハンドル６の上端には有底円筒状をなす収容部６ｂが
突設されている。収容口６ｂの前面側には収容部６ｂ内
に連通されたロッド挿入口６ｃが形成され、ロッド挿入
口６ｃの内側面はテーパ状となっており、その直径は後
方に向かう程縮径されている。この収容部６ｂ内には圧
縮スプリング（第２の弾性部材）４０が収容されてい
る。収容部６ｂ内における圧縮スプリング４０の上端に
は、操作ボタン（結合部材）４１が上下方向へ摺動可能
に収容され、操作ボタン４１はその下端が圧縮スプリン
グ４０の上端に当接されることにより支持されている。
操作ボタン４１の胴体部４１ａは有蓋円筒状に形成さ
れ、同胴体部４１ａの後側部にはその軸線方向に沿って
長孔４２が形成されている。この長孔４２には収容部６
ｂの後部において螺合されたネジ４３の先端が係入され
ており、この係入により、操作ボタン４１がガイドされ
るようになっている。Next, the second attaching / detaching mechanism 22 will be described in detail. As shown in FIGS. 3, 5 (a) and 5 (b), an accommodation portion 6 b having a bottomed cylindrical shape protrudes from an upper end of the rear handle 6. A rod insertion port 6c communicating with the inside of the storage section 6b is formed on the front side of the storage port 6b, and the inner surface of the rod insertion port 6c is tapered, and the diameter thereof is reduced toward the rear. I have. A compression spring (second elastic member) 40 is housed in the housing portion 6b. An operation button (coupling member) 41 is vertically slidably housed at the upper end of the compression spring 40 in the housing portion 6b, and the lower end of the operation button 41 contacts the upper end of the compression spring 40. Supported.
The body 41a of the operation button 41 is formed in a closed cylindrical shape, and a long hole 42 is formed on the rear side of the body 41a along the axial direction thereof. In the long hole 42, the housing 6
The distal end of the screw 43 screwed in at the rear of b is engaged, and the operation button 41 is guided by this engagement.
【００２４】前記操作ボタン４１の胴体部４１ａ内には
インナーストッパ４４が挿入固着され、このインナース
トッパ４４の前面部には、その下端から上端付近にかけ
て切欠き部４５が形成されている。胴体部４１ａの内部
は、その内側面と切欠き部４５にて囲まれることによ
り、胴体部４１ａの直径より小さい空間部４６となって
いる。操作ボタン４１における胴体部４１ａの前面側に
は挿入孔４７が形成され、挿入孔４７は、円形状をなす
通過部４７ａと、同通過部４７ａの下部に連続して形成
されたスリット部４７ｂとから構成されている。通過部
４７ａの直径は、ロッド１１の後端に形成された係止球
体（係止部）４８の直径よりも大きくなっている。一
方、スリット部４７ｂの幅は、係止球体４８の直径より
も狭くなっている。An inner stopper 44 is inserted and fixed in the body portion 41a of the operation button 41, and a notch portion 45 is formed in the front portion of the inner stopper 44 from the lower end to the vicinity of the upper end. The inside of the body 41a is a space 46 smaller than the diameter of the body 41a by being surrounded by the inner surface and the notch 45. An insertion hole 47 is formed on the front side of the body portion 41a of the operation button 41. The insertion hole 47 has a circular passing portion 47a and a slit portion 47b formed continuously below the passing portion 47a. It is composed of The diameter of the passage portion 47a is larger than the diameter of a locking sphere (locking portion) 48 formed at the rear end of the rod 11. On the other hand, the width of the slit portion 47b is smaller than the diameter of the locking sphere 48.
【００２５】そして、図５（ａ），（ｂ）に示すよう
に、圧縮スプリング４０の弾性力により、操作ボタン４
１が上限に位置すると、挿入孔４７のスリット部４７ｂ
にロッド１１が位置されるため、係止球体４８は空間部
４６から抜け出なくなって操作ボタン４１に連結され
る。又、図６（ａ），（ｂ）に示すように、圧縮スプリ
ング４０の弾性力に抗して、操作ボタン４１が下限に位
置すると、挿入孔４７の通過部４７ａにロッド１１が位
置されるため、係止球体４は空間部４６から抜け出るよ
うになって操作ボタン４１から連結解除される。即ち、
操作ボタン４１は、ロッド１１が操作機構２の後側ハン
ドル６に対し連結される連結位置（図５（ａ），（ｂ）
に示す位置）Ｃと、ロッド１１が操作機構２の後側ハン
ドル６に対し連結解除される連結解除位置（図６
（ａ），（ｂ）に示す位置）Ｄとを取り得るようになっ
ている。As shown in FIGS. 5A and 5B, the operation button 4 is moved by the elastic force of the compression spring 40.
When 1 is located at the upper limit, the slit portion 47b of the insertion hole 47
The locking sphere 48 does not come out of the space portion 46 and is connected to the operation button 41 because the rod 11 is located at the position. 6A and 6B, when the operation button 41 is positioned at the lower limit against the elastic force of the compression spring 40, the rod 11 is positioned in the passage portion 47a of the insertion hole 47. Therefore, the locking sphere 4 comes out of the space portion 46 and is disconnected from the operation button 41. That is,
The operation button 41 is connected to the connection position where the rod 11 is connected to the rear handle 6 of the operation mechanism 2 (FIGS. 5A and 5B).
6) and a connection release position (FIG. 6) where the rod 11 is disconnected from the rear handle 6 of the operation mechanism 2.
(Positions shown in (a) and (b)).
【００２６】次に、上記のように構成された内視鏡用処
置具１の作用について説明する。使用済みの鉗子４を操
作機構２から取り外して、新しい鉗子４を操作機構２に
取り付けるには以下のように行う。即ち、両操作片３１
ａ，３１ｂの基端を接近する方向へ押圧すると、同操作
片３１ａ，３１ｂの先端側が圧縮バネ３６ａ，３６ｂの
弾性力に抗して離間され、係合爪３７ａ，３７ｂが係合
位置Ａから係合解除位置Ｂに回動される。すると、係合
爪３７ａ，３７ｂが係合凹部３９ａ，３９ｂから外れ、
第１の着脱機構１０において、長尺パイプ３と操作片３
１ａ，３１ｂとの係合が解除された状態となる。それと
ともに、操作片３１ａ，３１ｂを係合解除位置Ｂに保持
した状態で、操作ボタン４１を下方へ押圧して圧縮スプ
リング４０の弾性力に抗して連結位置Ｃから連結解除位
置Ｄに移動させると、挿入孔４７の通過部４７ａが下方
へ移動する。この移動により、通過部４７ａがロッド挿
入口６ｃに対応位置し、第２の着脱機構２２において、
ロッド１１と操作ボタン４１との連結が解除された状態
となる。Next, the operation of the endoscope treatment instrument 1 configured as described above will be described. To remove the used forceps 4 from the operation mechanism 2 and attach a new forceps 4 to the operation mechanism 2, the following is performed. That is, both operation pieces 31
When the base ends of the operating pieces 31a and 31b are pressed in the approaching direction, the distal ends of the operating pieces 31a and 31b are separated from each other against the elastic force of the compression springs 36a and 36b, and the engaging claws 37a and 37b are moved from the engaging position A. It is rotated to the disengagement position B. Then, the engagement claws 37a, 37b are disengaged from the engagement recesses 39a, 39b,
In the first attachment / detachment mechanism 10, the long pipe 3 and the operation piece 3
The engagement with 1a and 31b is released. At the same time, with the operation pieces 31a and 31b held at the disengagement position B, the operation button 41 is pressed downward to move from the connection position C to the connection release position D against the elastic force of the compression spring 40. Then, the passing portion 47a of the insertion hole 47 moves downward. By this movement, the passing portion 47a is positioned at a position corresponding to the rod insertion port 6c, and in the second attaching / detaching mechanism 22,
The connection between the rod 11 and the operation button 41 is released.
【００２７】前記の状態で長尺パイプ３を引き抜くと、
第１の着脱機構１０において、同長尺パイプ３が胴体フ
レーム２３の貫通孔２３ａ及び挿入管２４から抜き取ら
れる。それとともに、第２の着脱機構２２において、前
記長尺パイプ３の引き抜きに連動して係止球体４８が通
過部４７ａ、ロッド挿入口６ｃを介して抜き取られ、更
に胴体フレーム２３の貫通孔２３ａ及び挿入管２４から
抜き取られる。よって、使用済みの鉗子４は長尺パイプ
３ごと操作機構２から取り外される。When the long pipe 3 is pulled out in the above state,
In the first attaching / detaching mechanism 10, the same long pipe 3 is withdrawn from the through hole 23 a of the body frame 23 and the insertion tube 24. At the same time, in the second attachment / detachment mechanism 22, the locking sphere 48 is pulled out through the passage portion 47a and the rod insertion opening 6c in conjunction with the pulling out of the long pipe 3, and the through-hole 23a of the body frame 23 and It is withdrawn from the insertion tube 24. Therefore, the used forceps 4 are removed from the operation mechanism 2 together with the long pipe 3.
【００２８】新しい鉗子４を操作機構２に取り付けるに
は、取り外す場合と反対の操作でもって行う。即ち、操
作片３１ａ，３１ｂの基端を予め押圧し、同操作片３１
ａ，３１ｂの先端を外側に開いて係合解除位置Ｂに位置
させておく。それとともに、操作ボタン４１を下方に押
圧して挿入孔４７の通過部４７ａをロッド挿入口６ｃに
対応位置させておく。この状態で、挿入管２４のキー２
４ａが長尺パイプ３のキー溝３ｂに係入されるようにし
て、同挿入管２４内に長尺パイプ３を差し込む。する
と、長尺パイプ３の差し込み動作に連動して、ロッド１
１の係止球体４８は、第１の着脱機構１０における挿入
管２４及び胴体フレーム２３の貫通孔２３ａを通過し、
更に第２の着脱機構２２におけるロッド挿入口６ｃ及び
通過部４７ａを通過して空間部４６内に挿入される。こ
のとき、係止球体４８の先端は、インナーストッパ４４
の切欠き部４５に突き当たることにより後方側への位置
決めがなされる。又、インナーストッパ４４が切欠き部
４５に突き当たるのと同時に、長尺パイプ３の基端面が
支持筒９の先端面に突き当たることにより後方側への位
置決めがなされるとともに、係合凹部３９ａ，３９ｂは
透孔３８ａ，３８ｂに対応位置される。In order to attach a new forceps 4 to the operation mechanism 2, the operation is performed in a manner opposite to the operation for removing the forceps. That is, the base ends of the operation pieces 31a and 31b are pressed in advance, and the operation pieces 31
The leading ends of the a and 31b are opened outward to be positioned at the disengagement position B. At the same time, the operation button 41 is pressed downward so that the passage portion 47a of the insertion hole 47 is positioned corresponding to the rod insertion port 6c. In this state, the key 2 of the insertion tube 24 is
The long pipe 3 is inserted into the insertion tube 24 so that the 4a is engaged with the key groove 3b of the long pipe 3. Then, in conjunction with the insertion operation of the long pipe 3, the rod 1
The first locking sphere 48 passes through the insertion tube 24 in the first attaching / detaching mechanism 10 and the through hole 23a of the body frame 23,
Further, it passes through the rod insertion opening 6c and the passing portion 47a of the second attaching / detaching mechanism 22, and is inserted into the space 46. At this time, the tip of the locking sphere 48 is
The rearward positioning is performed by abutting against the notch 45. At the same time that the inner stopper 44 abuts against the notch portion 45, the base end surface of the long pipe 3 abuts against the distal end surface of the support tube 9, thereby positioning the rear side and engaging recesses 39a, 39b. Are positioned corresponding to the through holes 38a and 38b.
【００２９】そして、第２の着脱機構２２において、操
作ボタン４１の押圧を解除すると、圧縮スプリング４０
の弾性力でもって、操作ボタン４１は連結解除位置Ｄか
ら連結位置Ｃに移動するため、挿入孔４７の通過部４７
ａはロッド挿入口６ｃに対応する位置から上方に位置ず
れし、ロッド１１の後端はスリット部４７ｂ内に係入さ
れる。よって、ロッド１１が抜け出ようとしても係止球
体４８がスリット部４７ｂに干渉するため、空間部４６
から係止球体４８が抜け出なくなる。よって、ロッド１
１と操作ボタン４１とが連結されることにより、ロッド
１１は第２の着脱機構２２に連結されることとなる。When the operation button 41 is released from the second attachment / detachment mechanism 22, the compression spring 40 is released.
The operation button 41 is moved from the connection release position D to the connection position C by the elastic force of
a is displaced upward from the position corresponding to the rod insertion opening 6c, and the rear end of the rod 11 is engaged in the slit 47b. Therefore, even if the rod 11 tries to come out, the locking sphere 48 interferes with the slit 47b, so that the space 46
The locking sphere 48 does not come off from the shaft. Therefore, rod 1
The rod 11 is connected to the second attaching / detaching mechanism 22 by connecting the operation button 41 with the operation button 41.
【００３０】それとともに、第１の着脱機構１０におい
て操作片３１ａ，３１ｂの押圧を解除すると、圧縮バネ
３６ａ，３６ｂの弾性力でもって、操作片３１ａ，３１
ｂは係合解除位置Ｂから係合位置Ａに回動される。する
と、係合爪３７ａ，３７ｂが係合凹部３９ａ，３９ｂに
係合される。この係合により、長尺パイプ３は第１の着
脱機構１０に連結されることとなる。At the same time, when the pressing of the operating pieces 31a, 31b is released in the first attaching / detaching mechanism 10, the operating pieces 31a, 31b are elastically exerted by the compression springs 36a, 36b.
b is rotated from the disengaged position B to the engaged position A. Then, the engaging claws 37a, 37b are engaged with the engaging concave portions 39a, 39b. By this engagement, the long pipe 3 is connected to the first attaching / detaching mechanism 10.
【００３１】又、第１の着脱機構１０に長尺パイプ３を
連結し、かつ第２の着脱機構２２にロッド１１を連結し
た状態で、長尺パイプ３の軸線周りに鉗子４の向きを変
更したい場合には以下のように行う。即ち、胴体フレー
ム２３をその軸線周りに回動すると、係合凹部３９ａ，
３９ｂに係合爪３７ａ，３７ｂが係合されているため、
長尺パイプ３及びロッド１１はその軸線周りに回動され
る。この回動により、固定中心軸１９は長尺パイプ３の
軸線周りに回動し、鉗子４も長尺パイプ３の軸線周りに
回動する。The direction of the forceps 4 is changed around the axis of the long pipe 3 in a state where the long pipe 3 is connected to the first mounting mechanism 10 and the rod 11 is connected to the second mounting mechanism 22. If you want to do that, do as follows. That is, when the body frame 23 is rotated around its axis, the engagement recesses 39a,
Since the engaging claws 37a and 37b are engaged with the 39b,
The long pipe 3 and the rod 11 are rotated around their axes. By this rotation, the fixed center shaft 19 rotates around the axis of the long pipe 3, and the forceps 4 also rotates around the axis of the long pipe 3.
【００３２】次に、本実施形態から見い出せる効果を以
下に記載する。 （１）操作片３１ａ，３１ｂの押圧操作により、係合爪
３７ａ，３７ｂが係合位置Ａと係合解除位置Ｂとの間を
取り得るようにし、同係合爪３７ａ，３７ｂを係合凹部
３９ａ，３９ｂに対して係合又は係合解除するようにし
た。そのため、操作機構２に鉗子４を着脱する際に、長
尺パイプ３を挿入管２４及び胴体フレーム２３の貫通孔
２３ａに抜き差して第１の着脱機構１０に対し着脱する
ことができる。従って、ネジ結合でもって鉗子４を回し
ながら取り付ける場合と異なり、操作機構２に鉗子４を
簡単に取り付けることができる。Next, effects that can be found from this embodiment will be described below. (1) By pressing the operation pieces 31a, 31b, the engaging claws 37a, 37b can be set between the engaging position A and the disengaging position B, and the engaging claws 37a, 37b are moved to the engaging concave portions. 39a and 39b are engaged or disengaged. Therefore, when attaching / detaching the forceps 4 to / from the operation mechanism 2, the long pipe 3 can be inserted into / removed from the insertion tube 24 and the through hole 23 a of the body frame 23 and attached / detached to / from the first attaching / detaching mechanism 10. Therefore, unlike the case where the forceps 4 are attached while being rotated by screw connection, the forceps 4 can be easily attached to the operation mechanism 2.
【００３３】（２）圧縮バネ３６ａ，３６ｂの弾性力で
もって係合爪３７ａ，３７ｂを係合位置Ａに保持するよ
うにしたため、係合凹部３９ａ，３９ｂから係合爪３７
ａ，３７ｂが外れるのを防止でき、長尺パイプ３が第１
の着脱機構１０から抜けるのを確実に防止することがで
きる。(2) The engaging claws 37a, 37b are held at the engaging position A by the elastic force of the compression springs 36a, 36b.
a, 37b can be prevented from coming off, and the long pipe 3
From the attachment / detachment mechanism 10 can be reliably prevented.
【００３４】（３）操作ボタン４１が連結位置Ｃと連結
解除位置Ｄとを取り得るように上下移動可能に設け、同
操作ボタン４１の移動に伴って挿入孔４７の通過部４７
ａを上下移動できるようにした。そのため、操作機構２
に鉗子４を着脱する際に、ロッド１１を操作ボタン４１
に抜き差しすることにより、第２の着脱機構２２に対し
て着脱することができる。従って、ネジ結合でもって鉗
子４を回しながら取り付ける場合と異なり、鉗子４を簡
単に操作機構２に取り付けることができる。(3) The operation button 41 is provided so as to be movable up and down so as to be able to take a connection position C and a connection release position D. With the movement of the operation button 41, the passing portion 47 of the insertion hole 47 is provided.
a can be moved up and down. Therefore, the operating mechanism 2
When the forceps 4 are attached to and detached from the
Can be attached to and detached from the second attachment / detachment mechanism 22. Therefore, unlike the case where the forceps 4 are attached while being rotated by screw connection, the forceps 4 can be easily attached to the operation mechanism 2.
【００３５】（４）圧縮スプリング４０の弾性力でもっ
て、操作ボタン４１を連結位置Ｃに保持したため、挿入
孔４７のスリット部４７ｂが下方に下がることはない。
よって、空間部４６から係止球体４８が抜け出るのを防
止でき、ロッド１１が第２の着脱機構２２から抜けるの
を確実に防止することができる。(4) Since the operation button 41 is held at the connecting position C by the elastic force of the compression spring 40, the slit portion 47b of the insertion hole 47 does not fall downward.
Therefore, the locking sphere 48 can be prevented from falling out of the space portion 46, and the rod 11 can be reliably prevented from falling out of the second attaching / detaching mechanism 22.
【００３６】（５）長尺パイプ３を第１の着脱機構１０
に取り付ける際において、支持筒９の先端面に長尺パイ
プ３の基端面が突き当たるようにした。又、ロッド１１
を第２の着脱機構２２に取り付ける際において、係止球
体４８がインナーストッパ４４の切欠き部４５に突き当
たるようにした。従って、長尺パイプ３及びロッド１１
の位置決めを正確に行うことができ、第１の着脱機構１
０における係合凹部３９ａ，３９ｂ及び係合爪３７ａ，
３７ｂの係合と、第２の着脱機構２２におけるロッド１
１及び操作ボタン４１との連結をスムーズ且つ確実に行
うことができる。(5) Connect the long pipe 3 to the first attaching / detaching mechanism 10
At the time of attachment, the base end surface of the long pipe 3 was brought into contact with the front end surface of the support cylinder 9. Also, the rod 11
When attaching to the second attaching / detaching mechanism 22, the locking sphere 48 abuts against the notch 45 of the inner stopper 44. Therefore, the long pipe 3 and the rod 11
Can be accurately positioned, and the first attaching / detaching mechanism 1
0, the engagement recesses 39a, 39b and the engagement claws 37a,
37b and the rod 1 in the second attaching / detaching mechanism 22.
1 and the operation button 41 can be connected smoothly and reliably.
【００３７】なお、本発明は前記実施の形態以外に以下
のように構成してもよい。 （ア）前記実施形態では、操作片３１ａ，３１ｂを係合
位置Ａ側に押圧するための圧縮バネ３６ａ，３６ｂを使
用した。又、操作ボタン４１を連結位置Ｃ側に押圧する
ための圧縮スプリング４０を使用した。このバネ以外に
も、板バネ等あらゆる弾性部材も含む。The present invention may be configured as follows in addition to the above embodiment. (A) In the above embodiment, the compression springs 36a, 36b for pressing the operation pieces 31a, 31b toward the engagement position A are used. Further, a compression spring 40 for pressing the operation button 41 toward the connection position C was used. In addition to this spring, any elastic member such as a leaf spring is included.
【００３８】（イ）前記実施形態では、操作片３１ａ，
３１ｂを二つ設けたが、一つにしてもよい。このように
すれば、操作片３１ａ，３１ｂに付随する圧縮バネ３６
ａ，３６ｂ等の部材も少なくなるため、第１の着脱機構
１０の構造を簡略化でき、製造コストを低減することが
できる。(A) In the above embodiment, the operation pieces 31a,
Although two 31b are provided, one may be provided. By doing so, the compression spring 36 attached to the operation pieces 31a, 31b
Since the number of members such as a and 36b is reduced, the structure of the first attaching / detaching mechanism 10 can be simplified, and the manufacturing cost can be reduced.
【００３９】（ウ）前記実施形態では、互いに開閉可能
に支持された一対のハンドル５，６からなる操作機構２
としたが、この操作機構２はどのようなものに変更して
もよい。(C) In the above embodiment, the operating mechanism 2 includes a pair of handles 5 and 6 supported so as to be openable and closable with each other.
However, the operation mechanism 2 may be changed to any type.
【００４０】次に、前記実施形態から把握できる請求項
以外の技術的思想について、それらの効果とともに記載
する。 （Ａ）前記係合部は、被係合部に対して凹凸の関係で係
合されるものである請求項１に記載の内視鏡用処置具。
この構成によれば、内視鏡用処置具の構造を簡単にする
ことができる。Next, technical ideas other than the claims that can be grasped from the embodiment will be described together with their effects. (A) The treatment tool for an endoscope according to claim 1, wherein the engaging portion is engaged with the engaged portion in an uneven relationship.
According to this configuration, the structure of the endoscope treatment tool can be simplified.
【００４１】（Ｂ）前記操作部材は複数個互いに対向配
置され、前記係合部が互いに接近離間する方向へ両操作
部材同士が回動可能となっている請求項１に記載の内視
鏡用処置具。この構成によれば、係合部の操作性を向上
できる。(B) The endoscope according to claim 1, wherein a plurality of the operating members are arranged to face each other, and both operating members are rotatable in a direction in which the engaging portions approach and separate from each other. Treatment tools. According to this configuration, the operability of the engagement portion can be improved.
【００４２】（Ｃ）前記結合部材は、連結位置と連結解
除位置との間を往復移動可能に支持されている請求項１
に記載の内視鏡用処置具。この構成によれば、連結部材
の操作性を向上できる。[0042] (C) the coupling member according to claim 1 which is supported between a decoupling position and a coupling position for reciprocal movement
The treatment tool for an endoscope according to item 1. According to this configuration, the operability of the connecting member can be improved.
【００４３】（Ｄ）結合部材には係止部が挿入される挿
入孔が形成され、この挿入孔には、結合部材が連結位置
に位置する際において、係止部が挿入孔内に通過可能な
通過部と、結合部材が連結解除位置に位置する際におい
て、係止部が挿入孔内から抜け出ないようにするガイド
部とが形成され、前記通過部とガイド部とは連続してい
る請求項１に記載の内視鏡用処置具。(D) The coupling member has an insertion hole into which the locking portion is inserted, and the locking portion can pass through the insertion hole when the coupling member is located at the coupling position. And a guide portion for preventing the locking portion from falling out of the insertion hole when the coupling member is located at the connection release position, and the passing portion and the guide portion are continuous. Item 2. The treatment tool for an endoscope according to Item 1 .
【００４４】[0044]
【発明の効果】請求項１に記載の発明によれば、操作機
構に対して処置部を簡単に着脱することができる。According to the first aspect of the present invention, the treatment section can be easily attached to and detached from the operation mechanism.
【図１】（ａ）は内視鏡処置具を示す斜視図、（ｂ）は
鉗子を示す平面図。1A is a perspective view showing an endoscope treatment tool, and FIG. 1B is a plan view showing forceps.
【図２】内視鏡処置具を示す分解斜視図。FIG. 2 is an exploded perspective view showing the endoscope treatment tool.
【図３】操作機構と第１の着脱機構を示す分解斜視図。FIG. 3 is an exploded perspective view showing an operation mechanism and a first attaching / detaching mechanism.
【図４】（ａ）（ｂ）は第１の着脱機構を示す平断面
図、（ｃ）は（ａ）のＸ−Ｘ断面図。FIGS. 4A and 4B are plan sectional views showing a first attaching / detaching mechanism, and FIG. 4C is a sectional view taken along line XX of FIG.
【図５】（ａ）は第２の着脱機構を示す縦断面図、
（ｂ）は（ａ）のＹ−Ｙ断面図。FIG. 5A is a longitudinal sectional view showing a second attaching / detaching mechanism;
(B) is a YY sectional view of (a).
【図６】（ａ）は第２の着脱機構を示す縦断面図、
（ｂ）は（ａ）のＺ−Ｚ断面図。FIG. 6A is a longitudinal sectional view showing a second attaching / detaching mechanism,
(B) is a ZZ sectional view of (a).
２…操作機構、３…長尺パイプ（長尺部材）、１０…第
１の着脱機構、１１…ロッド（連動部材）、４…鉗子
（処置部）、２２…第２の着脱機構、３９ａ，３９ｂ…
係合凹部（被係合部）、３１ａ，３１ｂ…操作片（操作
部材）、３６ａ，３６ｂ…圧縮バネ（第１の弾性部
材）、３７ａ，３７ｂ…係合爪（係合部）、Ａ…係合位
置、Ｂ…係合解除位置、４８…係止球体（係止部）、４
０…圧縮スプリング（第２の弾性部材）、４１…操作ボ
タン（結合部材）、Ｃ…連結位置、Ｄ…連結解除位置。2 ... operation mechanism, 3 ... long pipe (long member), 10 ... first attachment / detachment mechanism, 11 ... rod (interlocking member), 4 ... forceps (treatment unit), 22 ... second attachment / detachment mechanism, 39a, 39b ...
Engaging concave portions (engaged portions), 31a, 31b ... operating pieces (operating members), 36a, 36b ... compression springs (first elastic members), 37a, 37b ... engaging claws (engaging portions), A ... Engagement position, B: engagement release position, 48: locking sphere (locking portion), 4
0: compression spring (second elastic member), 41: operation button (coupling member), C: connection position, D: connection release position.
Claims (1)
内には前記操作機構の操作に連動する連動部材を設け、
連動部材の先端に処置部を駆動連結し、この処置部を操
作機構により遠隔操作して作動させるようにし、 前記操作機構に対して長尺部材を着脱可能に連結するた
めの第１の着脱機構と、 前記操作機構に対して連動部材の基端を着脱可能に連結
するための第２の着脱機構とを備え、 前記第１の着脱機構にあっては、 前記長尺部材の被係合部に対し係合可能な係合部を操作
部材の一端に設け、前記係合部が被係合部に係合する係
合位置と、被係合部から係合解除する係合解除位置とを
取り得るように、前記操作部材を軸により回動可能に支
持し、操作部材の他端には前記係合部を係合位置側に付
勢する第１の弾性部材を設けるとともに、 前記第２の着脱機構にあっては、 前記連動部材の基端には係止部を設け、前記操作機構に
は前記係止部に連結可能な結合部材を設け、この結合部
材を、連動部材が操作機構に対し連結される連結位置
と、連動部材が操作機構に対し連結解除される連結解除
位置とを取り得るように移動可能にし、前記結合部材の
移動経路上には同結合部材を連結位置側に付勢する第２
の弾性部材を設けた内視鏡用処置具。 An operation mechanism is provided with a long member, and an interlocking member is provided in the long member in conjunction with the operation of the operation mechanism.
A first attachment / detachment mechanism for drivingly connecting the treatment section to the distal end of the interlocking member and operating the treatment section by remotely operating the operation section, and detachably connecting the long member to the operation mechanism; And a second attachment / detachment mechanism for detachably connecting a base end of an interlocking member to the operation mechanism. In the first attachment / detachment mechanism, an engaged portion of the long member An engaging portion engageable with the operating member is provided at one end of the operating member, and an engaging position in which the engaging portion engages with the engaged portion, and an engagement releasing position in which the engaging portion is disengaged from the engaged portion. The operation member is rotatably supported by a shaft so as to be able to be taken, and the other end of the operation member is provided with a first elastic member for urging the engagement portion toward an engagement position, and In the attachment / detachment mechanism, a locking portion is provided at a base end of the interlocking member, and the operating mechanism is provided with the locking portion. A coupling member that can be coupled is provided, and the coupling member is movable so as to be able to take a coupling position where the interlocking member is coupled to the operation mechanism and a disconnection position where the coupling member is disconnected from the operation mechanism. A second biasing the coupling member toward the coupling position on the movement path of the coupling member;
An endoscope treatment tool provided with the elastic member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08276112A JP3091420B2 (en) | 1996-10-18 | 1996-10-18 | Endoscope treatment tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08276112A JP3091420B2 (en) | 1996-10-18 | 1996-10-18 | Endoscope treatment tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10118090A JPH10118090A (en) | 1998-05-12 |
| JP3091420B2 true JP3091420B2 (en) | 2000-09-25 |
Family
ID=17564970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08276112A Expired - Fee Related JP3091420B2 (en) | 1996-10-18 | 1996-10-18 | Endoscope treatment tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3091420B2 (en) |
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-
1996
- 1996-10-18 JP JP08276112A patent/JP3091420B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10118090A (en) | 1998-05-12 |
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