JP3669731B2

JP3669731B2 - Structure of remote control unit for endoscopic treatment tool

Info

Publication number: JP3669731B2
Application number: JP00087495A
Authority: JP
Inventors: 雅巳山岸
Original assignee: Kaijirushi Hamono Center KK
Current assignee: Kaijirushi Hamono Center KK
Priority date: 1995-01-06
Filing date: 1995-01-06
Publication date: 2005-07-13
Anticipated expiration: 2020-07-13
Also published as: JPH08187249A

Description

【０００１】
【産業上の利用分野】
この発明は、手術や医療検査などに用いられる内視鏡用処置具において、その遠隔操作部の構造に関するものである。
【０００２】
【従来の技術】
実開平５ー１３４０９号公報に示す従来のものの類似品として図４に示す内視鏡用処置具において、操作部１は、一体成形された筒体２と、この筒体２の基端部に対し回動可能に支持された第一指掛け体４と、この筒体２に対し移動可能に支持された第二指掛け体５とを備えている。この第二指掛け体５は本体５ａとワイヤ受け部１９とからなり、このワイヤ受け部１９が一対の雄ねじ部品１９ａ，１９ｂに分割されている。この第二指掛け体５を筒体２に組付ける場合には、本体５ａを筒体２の外周に挿嵌するとともに、両雄ねじ部品１９ａ，１９ｂを筒体２の切込み９に挿入して互いに合体させ、この両雄ねじ部品１９ａ，１９ｂ（ワイヤ受け部１９）に本体５ａを螺合する。前記両雄ねじ部品１９ａ，１９ｂを合体させるとき、筒体２を通る連動索２１内のワイヤ２２の基端部をこのワイヤ受け部１９に連結する。そして、この第二指掛け体５の移動により処置部としてのカッター２５が遠隔操作されるようになっている。
【０００３】
【発明が解決しようとする課題】
ところが、前記筒体２が一体成形されているため、下記の欠点がある。
（イ）筒体２内には連動索２１が挿通されるため、連動索挿通孔を成形しなければならず、筒体２の成形が困難であった。
【０００４】
（ロ）筒体２には両雄ねじ部品１９ａ，１９ｂが挿入される切込み９を成形しなければならず、筒体２の成形が困難であった。
また、前記切込み９が筒体２の先端部及び基端部で閉塞されているため、下記の欠点がある。
【０００５】
（ハ）第二指掛け体５を本体５ａとワイヤ受け部１９の両雄ねじ部品１９ａ，１９ｂに分割し、前述した組付け手順により第二指掛け体５を筒体２に組付ける必要があるため、その組付けが面倒であった。
【０００６】
本発明は操作部の構造を改良して筒体の成形を容易に行うことを目的としている。また、本発明は筒体に対する第二指掛け体の組付けを容易に行うことを目的としている。
【０００７】
【課題を解決するための手段】
後記する実施例の図面に示すように、第一発明にかかる内視鏡用処置具においては、内視鏡を介して体内に挿入される連動索（２１）の先端部に設けられた処置部（２５）が、操作部（１）により遠隔操作されて作動されるようになっている。前記操作部（１）は、互いに分割された割り筒（６）と、口体（３）と、第一指掛け体（４）と、第二指掛け体（５）とを備えている。口体（３）は、この割り筒（６）を重合した筒体（２）の先端部を互いに分離しないように支える。第一指掛け体（４）は、この筒体（２）の基端部を互いに分離しないように支える。第二指掛け体（５）は、この筒体（２）に対し移動可能に支持されている。前記筒体（２）を通る連動索（２１）の基端部が第二指掛け体（５）に連結され、この第二指掛け体（５）の移動により前記処置部（２５）が遠隔操作可能になっている。
【０００８】
第二発明においては、第一発明に加え、第一指掛け体（４）が尻体（１３）と指掛け環（１４）とからなる。尻体（１３）は、筒体（２）の基端部を互いに分離しないように支える。指掛け環（１４）は、この尻体（１３）及び筒体（２）に対し筒体（２）内の連動索延設方向（Ｐ）回りで回動可能に支持されている。さらに、第二指掛け体（５）は前記連動索延設方向（Ｐ）に沿って移動し、第一指掛け体（４）の尻体（１３）に対し接近離間するようになっている。
【０００９】
第三発明にかかる内視鏡用処置具においては、内視鏡を介して体内に挿入される連動索（２１）の先端部に設けられた処置部（２５）が、操作部（１）により遠隔操作されて作動されるようになっている。前記操作部（１）は、割り筒（６）を有する筒体（２）と、この筒体（２）に対し移動可能に支持された第二指掛け体（５）とを備えている。前記筒体（２）の外周先端部側から外周基端部側にわたり割り筒（６）間で切込み（９）が延設されてこの切込み（９）の基端部側が開放されている。この割り筒（６）を重合した筒体（２）の先端部を互いに分離しないように支える口体（３）と、この切込み（９）の基端部側開放部（９ａ）で筒体（２）の割り筒（６）の基端部を互いに分離しないように支える第一指掛け体（４）とを前記操作部（１）に備えている。前記第二指掛け体（５）にはワイヤ受け部（１９）が一体成形されているとともにこのワイヤ受け部（１９）を挟んで前記割り筒（６）が挿入される挿通孔（２０ａ）が形成されている。前記筒体（２）を通る連動索（２１）の基端部が第二指掛け体（５）のワイヤ受け部（１９）に連結され、この第二指掛け体（５）の移動により前記処置部（２５）が遠隔操作可能になっている。
【００１０】
【作用】
第一発明においては、操作部（１）の筒体（２）を割り筒（６）に分割すると、その内側が開放されて筒体（２）の成形が容易になる。この筒体（２）の割り筒（６）は口体（３）と第一指掛け体（４）とにより支えられて互いに分離しない。
【００１１】
第二発明においては、第一発明の作用に加え、第二指掛け体（５）が第一指掛け体（４）の尻体（１３）に対し接近離間するとき、第一指掛け体（４）の指掛け環（１４）が回動する。
【００１２】
第三発明においては、第二指掛け体（５）を筒体（２）に組付ける場合、例えば、筒体（２）の割り筒（６）をそれぞれその基端部側から第二指掛け体（５）の挿通孔（２０ａ）に挿入して、この割り筒（６）間の切込み（９）にその基端部側開放部（９ａ）から第二指掛け体（５）のワイヤ受け部（１９）を挿入するだけでよい。
【００１３】
【実施例】
以下、本発明の一実施例にかかる内視鏡用処置具を図１，２を参照して説明する。
【００１４】
操作部１は、筒体２と口体３と第一指掛け体４と第二指掛け体５とを備え、互いに分離されて成形されている。
前記筒体２は二分割された割り筒６からなり、両割り筒６がプラスチックにより一体成形され、互いに重合されて円筒状をなす。その重合状態では、筒体２の先端部外周と基端部外周とにそれぞれ嵌着部７，８が形成され、この外周先端部側から外周基端部側にわたり筒体２の割り筒６間で切込み９が延設され、前記基端部側の嵌着部８の内側で筒体２内に周溝１０（回動案内部）が形成されている。この両切込み９の基端部側が筒体２の延設方向へ開放されて開放部９ａになっている。
【００１５】
前記口体３はプラスチックにより一体成形されて円筒状をなし、その先端部内周に挿入孔１１が形成され、その基端部内周に嵌着孔１２が形成されている。この嵌着孔１２に前記筒体２の先端部外周の嵌着部７が挿嵌され、この口体３により筒体２の先端部が互いに分離しないように支えられている。
【００１６】
前記第一指掛け体４は円筒状の尻体１３と指掛け環１４とからなり、それぞれ互いに分離されてプラスチックにより一体成形されている。この尻体１３は前記筒体２の基端部外周の嵌着部８に挿嵌され、この尻体１３により筒体２の基端部が互いに分離しないように支えられている。この指掛け環１４は頭環１５と首軸１６とからなり、この首軸１６の外周に周突条１７（回動案内部）が形成されている。この首軸１６の周突条１７が前記筒体２の基端部内側の周溝１０に挿嵌され、指掛け環１４が尻体１３及び筒体２の嵌着部８に対し筒体２の延設方向回りで回動可能に支持されている。
【００１７】
前記第二指掛け体５はプラスチックにより一体成形されて円筒状をなす。この第二指掛け体５においては、その外周に指掛け溝１８が形成され、その内側の摺動孔２０の下半部にワイヤ受け部１９が橋状に架設されているとともに、このワイヤ受け部１９を挟んで摺動孔２０に挿通孔２０ａが形成されている。この両挿通孔２０ａに前記筒体２の両割り筒６が挿通されて摺動孔２０の内周面が筒体２の外周面に摺接し、この第二指掛け体５が筒体２に対しその延設方向へ移動可能に支持されている。
【００１８】
連動策２１は、内視鏡（図示せず）を介して体内に挿入されるものであって、ワイヤ２２と保護パイプ２３と保護コイル２４とカッター２５（処置部）とからなる。前記筒体２内でワイヤ２２の基端部が保護パイプ２３内に挿入されて半田付けされている。このワイヤ２２及び保護パイプ２３は前記第二指掛け体５のワイヤ受け部１９に挿入され、その基端折曲部で止めねじ２６により挟持されて連結されている。前記保護コイル２４はこのワイヤ２２及び保護パイプ２３の外周に巻装され、この保護コイル２４の基端部が前記口体３内で半田付けされて挿入孔１１から引き出されている。この保護コイル２４の先端部に一対の小アーム２７が設けられ、この両小アーム２７間に前記カッター２５が取り付けられている。このカッター２５は前記ワイヤ２２の先端部に接続され、両小アーム２７上の支軸２７ａを中心に開閉するようになっている。
【００１９】
前記第一指掛け体４の指掛け環１４と第二指掛け体５の指掛け溝１８とに指を掛けて第二指掛け体５を筒体２内の連動索延設方向Ｐ（前記筒体延設方向）へ往復移動させると、ワイヤ２２を介してカッター２５が開閉する。
【００２０】
本実施例は下記（イ）〜（ニ）の特徴を有する。
（イ）前記筒体２は二分割された割り筒６からなるため、筒体２の内側が開放される。従って、連動策２１を挿通するための孔や、第二指掛け体５のワイヤ受け部１９を挿入するための切込み９を筒体２に成形する場合、その成形を容易に行うことができる。
【００２１】
（ロ）前記第二指掛け体５を筒体２に組付ける場合、筒体２の両割り筒６をそれぞれその基端部側から第二指掛け体５の両挿通孔２０ａに挿入して、この両割り筒６間の切込み９にその基端部側開放部９ａから第二指掛け体５のワイヤ受け部１９を挿入するだけでよいので、その組付けを容易に行うことができる。
【００２２】
（ハ）前記第一指掛け体４の指掛け環１４を筒体２の基端部に組付ける場合、二分割された割り筒６をこの指掛け環１４の首軸１６にその外側から重ね合わせた後、さらにこの両割り筒６の外側に尻体１３を挿嵌するだけで、首軸１６の周突条１７を両割り筒６の周溝１０に係入できるので、その組付けを容易に行うことができるとともに、両割り筒６の支えと指掛け環１４の回動支持とを確実に行うことができる。
【００２３】
（ニ）第一指掛け体４の指掛け環１４が回動するため、第二指掛け体５を第一指掛け体４の尻体１３に対し接近離間させるとき、カッター２５の遠隔操作を行い易い。
【００２４】
前記実施例以外にも下記（イ）〜（ハ）のように構成してもよい。
（イ）図３に示すように、前記第一指掛け体４においてその尻体１３と指掛け環１４とを一体化し、指掛け環１４の首軸１６に尻体１３の機能を持たせる。すなわち、筒体２の両割り筒６の外周に案内突起６ａを設けるとともに、この首軸１６の内周に案内溝１６ａを設け、この両割り筒６を首軸１６内に挿嵌してこの両案内突起６ａを案内溝１６ａに係入する。従って、第一指掛け体４はこの両案内突起６ａ及び案内溝１６ａ（回動案内部）で案内されて筒体２内の連動索延設方向Ｐ回りで回動可能に支持される。なお、この首軸１６内には切込み９の基端部側開放部９ａに係入されて両割り筒６を位置決めするための係止突起１６ｂが形成されている。
【００２５】
（ロ）前記筒体２の割り筒６を三以上に分割する。
（ハ）前記実施例では、両割り筒６間の切込み９の基端部側に開放部９ａを設けて第一指掛け体４の指掛け環１４により閉塞している。この基端部側開放部９ａのみを設けた場合には、筒体２の両割り筒６をその先端部側で一体化して二股状にし、口体３を別体にするか一体化するようにしてもよい。
【００２６】
各実施例から把握できる技術的思想（請求項以外）を効果とともに記載する。（イ）請求項１の第一指掛け体４を筒体２に対し筒体２内の連動索延設方向Ｐ回りで回動可能に支持した。従って、第二指掛け体５を第一指掛け体４に対し接近離間させるとき、カッター２５の遠隔操作を行い易い。
【００２７】
【発明の効果】
第一発明にかかる内視鏡用処置具によれば、操作部（１）の筒体（２）が割り筒（６）に分割されているため、筒体（２）の成形を容易に行うことができる。また、口体（３）と第一指掛け体（４）とにより、この割り筒（６）を重合した筒体（２）の先端部と基端部とを互いに分離しないように支えることができる。
【００２８】
第二発明によれば、第一発明の効果に加え、第一指掛け体（４）をさらに尻体（１３）と指掛け環（１４）とに分けてこの指掛け環（１４）を回動可能にしたので、第二指掛け体（５）を第一指掛け体（４）の尻体（１３）に対し接近離間させるとき、処置部（２５）の遠隔操作を行い易い。
【００２９】
第三発明によれば、筒体（２）に対する第二指掛け体（５）の組付けを容易に行うことができる。
【図面の簡単な説明】
【図１】（ａ）は本実施例にかかる内視鏡用処置具を示す分解斜視図であり、（ｂ）は（ａ）における第二指掛け体の横断面図である。
【図２】（ａ）は図１（ａ）の内視鏡用処置具を示す組付け正面図であり、（ｂ）は（ａ）を正面側から見た部分縦断面図である。
【図３】（ａ）は他の実施例にかかる内視鏡用処置具を示す部分正面図であり、（ｂ）は（ａ）を正面側から見た部分縦断面図である。
【図４】（ａ）は従来の内視鏡用処置具を示す平面図であり、（ｂ）は（ａ）のＹーＹ線における部分縦断面図である。
【符号の説明】
１…操作部、２…筒体、３…口体、４…第一指掛け体、５…第二指掛け体、６…割り筒、９…切込み、９ａ…開放部、１３…尻体、１４…指掛け環、１９…ワイヤ受け部、２０ａ…挿通孔２１…連動索、２５…処置部としてのカッター、Ｐ…連動索延設方向。[0001]
[Industrial application fields]
The present invention relates to the structure of a remote control unit in an endoscopic treatment tool used for surgery or medical examination.
[0002]
[Prior art]
In the endoscope treatment tool shown in FIG. 4 as a similar product to the conventional one shown in Japanese Utility Model Laid-Open No. 5-13409, the operation unit 1 includes an integrally formed cylinder 2 and a base end portion of the cylinder 2. A first finger hanging body 4 supported so as to be rotatable is provided, and a second finger hanging body 5 supported so as to be movable with respect to the cylindrical body 2 is provided. The second finger-hanging body 5 includes a main body 5a and a wire receiving portion 19, and the wire receiving portion 19 is divided into a pair of male screw parts 19a and 19b. When assembling the second finger-hanging body 5 to the cylindrical body 2, the main body 5 a is inserted into the outer periphery of the cylindrical body 2, and both male screw parts 19 a and 19 b are inserted into the notches 9 of the cylindrical body 2 so as to be combined with each other. Then, the main body 5a is screwed into the both male screw parts 19a, 19b (wire receiving part 19). When the both male screw parts 19 a and 19 b are combined, the base end portion of the wire 22 in the interlocking cable 21 passing through the cylindrical body 2 is connected to the wire receiving portion 19. And the cutter 25 as a treatment part is remotely operated by the movement of the second finger-hanging body 5.
[0003]
[Problems to be solved by the invention]
However, since the cylindrical body 2 is integrally formed, there are the following drawbacks.
(A) Since the interlocking cable 21 is inserted into the cylinder 2, the interlocking cable insertion hole has to be formed, and it is difficult to form the cylinder 2.
[0004]
(B) The cylindrical body 2 has to be formed with a notch 9 into which the male screw parts 19a and 19b are inserted, making it difficult to form the cylindrical body 2.
Moreover, since the said notch 9 is obstruct | occluded by the front-end | tip part and base end part of the cylinder 2, there exists the following fault.
[0005]
(C) Since the second finger-hanging body 5 needs to be divided into both male screw parts 19a, 19b of the main body 5a and the wire receiving portion 19 and the second finger-hanging body 5 needs to be assembled to the cylinder 2 by the above-described assembling procedure. The assembly was troublesome.
[0006]
An object of the present invention is to improve the structure of the operation portion and easily form a cylinder. Another object of the present invention is to facilitate the assembly of the second finger hanger to the cylinder.
[0007]
[Means for Solving the Problems]
As shown in the drawings of the embodiments to be described later, in the endoscopic treatment instrument according to the first invention, a treatment portion provided at the distal end portion of the interlocking cord (21) inserted into the body via the endoscope. (25) is operated by being remotely operated by the operation unit (1). The operation unit (1) includes a split cylinder (6), a mouthpiece (3), a first finger hanger (4), and a second finger hanger (5) that are divided from each other. The mouth (3) supports the tip of the cylinder (2) obtained by superimposing the split cylinder (6) so as not to separate from each other. The first finger hanging body (4) supports the base end portions of the cylindrical body (2) so as not to be separated from each other. The second finger hanging body (5) is supported so as to be movable with respect to the cylindrical body (2). The base end portion of the interlocking cord (21) passing through the cylindrical body (2) is connected to the second finger hanging body (5), and the treatment section (25) can be remotely operated by moving the second finger hanging body (5). It has become.
[0008]
In the second invention, in addition to the first invention, the first finger hanging body (4) is composed of the buttocks (13) and the finger hanging ring (14). The buttocks (13) support the base ends of the cylinder (2) so as not to separate from each other. The finger ring (14) is supported so as to be rotatable around the interlocking cable extending direction (P) in the cylindrical body (2) with respect to the buttocks (13) and the cylindrical body (2). Further, the second finger-hanging body (5) moves along the interlocking cable extending direction (P) and approaches and separates from the buttocks (13) of the first finger-hanging body (4).
[0009]
In the endoscope treatment tool according to the third invention, the treatment portion (25) provided at the distal end portion of the interlocking cord (21) inserted into the body via the endoscope is provided by the operation portion (1). It is operated remotely. The operation section (1) includes a cylinder (2) having a split cylinder (6), and a second finger hanging body (5) supported so as to be movable with respect to the cylinder (2). A notch (9) is extended between the split cylinders (6) from the outer peripheral distal end side to the outer peripheral proximal end side of the cylindrical body (2), and the proximal end side of the notch (9) is opened. A cylindrical body (3) which supports the distal end of the cylindrical body (2) obtained by superimposing the split cylinder (6) so as not to be separated from each other, and a base end side opening (9a) of the cut (9) ( split tube (6) first finger placing member supporting the base end portion so as not to separate from each other of 2) (4) and the operation portion are provided on a (1). A wire receiving portion (19) is integrally formed in the second finger-hanging body (5), and an insertion hole (20a) is formed through which the split cylinder (6) is inserted across the wire receiving portion (19). Has been. The base end portion of the interlocking cord (21) passing through the cylindrical body (2) is connected to the wire receiving portion (19) of the second finger hanging body (5), and the treatment portion is moved by the movement of the second finger hanging body (5). (25) can be remotely operated.
[0010]
[Action]
In 1st invention, if the cylinder (2) of an operation part (1) is divided | segmented into a split cylinder (6), the inner side will be open | released and shaping | molding of a cylinder (2) will become easy. The split cylinder (6) of the cylinder (2) is supported by the mouth (3) and the first finger hook (4) and is not separated from each other.
[0011]
In the second invention, in addition to the action of the first invention, when the second finger hanger (5) approaches and separates from the buttocks (13) of the first finger hanger (4), the first finger hanger (4) The finger ring (14) rotates.
[0012]
In the third invention, when assembling the second finger hanging body (5) to the cylindrical body (2), for example, the split cylinder (6) of the cylindrical body (2) is respectively connected to the second finger hanging body ( 5) is inserted into the insertion hole (20a), and the wire receiving portion (19) of the second finger hook (5) is inserted into the notch (9) between the split cylinders (6) from the base end side opening portion (9a). ) Just need to be inserted.
[0013]
【Example】
Hereinafter, an endoscope treatment tool according to an embodiment of the present invention will be described with reference to FIGS.
[0014]
The operation unit 1 includes a cylindrical body 2, a mouth body 3, a first finger hanging body 4, and a second finger hanging body 5, which are separated from each other and molded.
The cylinder 2 is composed of a split cylinder 6 divided into two, and both split cylinders 6 are integrally formed of plastic, and are superposed on each other to form a cylindrical shape. In the superposed state, fitting portions 7 and 8 are respectively formed on the outer periphery of the distal end portion and the outer periphery of the proximal end portion of the cylindrical body 2, and between the split cylinders 6 of the cylindrical body 2 from the outer peripheral distal end side to the outer peripheral proximal end side. A notch 9 is extended, and a circumferential groove 10 (rotation guide portion) is formed in the cylindrical body 2 inside the fitting portion 8 on the base end side. The base end side of both the cuts 9 is opened in the extending direction of the cylindrical body 2 to form an open portion 9a.
[0015]
The mouth 3 is integrally formed of plastic and has a cylindrical shape. An insertion hole 11 is formed on the inner periphery of the distal end, and a fitting hole 12 is formed on the inner periphery of the proximal end. A fitting portion 7 on the outer periphery of the tip end portion of the cylindrical body 2 is inserted into the fitting hole 12 and supported by the mouth body 3 so that the tip end portions of the cylindrical body 2 are not separated from each other.
[0016]
The first finger hanging body 4 includes a cylindrical bottom body 13 and a finger hanging ring 14, which are separated from each other and integrally formed of plastic. The bottom body 13 is inserted into the fitting portion 8 on the outer periphery of the base end portion of the cylindrical body 2 and is supported by the bottom body 13 so that the base end portions of the cylindrical body 2 are not separated from each other. The finger ring 14 includes a head ring 15 and a neck shaft 16, and a circumferential protrusion 17 (a rotation guide portion) is formed on the outer periphery of the neck shaft 16. The circumferential protrusion 17 of the neck 16 is inserted into the circumferential groove 10 inside the proximal end of the cylindrical body 2, and the finger ring 14 is attached to the buttocks 13 and the fitting portion 8 of the cylindrical body 2. It is supported so as to be rotatable around the extending direction.
[0017]
The second finger-hanging body 5 is integrally formed of plastic and has a cylindrical shape. In the second finger-hanging body 5, a finger-holding groove 18 is formed on the outer periphery thereof, and a wire receiving portion 19 is laid in a bridge shape on the lower half portion of the inner sliding hole 20. An insertion hole 20a is formed in the sliding hole 20 across the surface. The split cylinders 6 of the cylindrical body 2 are inserted into the insertion holes 20 a so that the inner peripheral surface of the sliding hole 20 is in sliding contact with the outer peripheral surface of the cylindrical body 2, and the second finger hook body 5 is in contact with the cylindrical body 2. It is supported so as to be movable in the extending direction.
[0018]
The interlocking measure 21 is inserted into the body through an endoscope (not shown), and includes a wire 22, a protective pipe 23, a protective coil 24, and a cutter 25 (treatment part). In the cylindrical body 2, the base end portion of the wire 22 is inserted into the protective pipe 23 and soldered. The wire 22 and the protective pipe 23 are inserted into the wire receiving portion 19 of the second finger-hanging body 5 and are connected by being clamped by a set screw 26 at the base end bent portion. The protective coil 24 is wound around the outer periphery of the wire 22 and the protective pipe 23, and the base end portion of the protective coil 24 is soldered in the mouth 3 and pulled out from the insertion hole 11. A pair of small arms 27 is provided at the tip of the protective coil 24, and the cutter 25 is attached between the small arms 27. The cutter 25 is connected to the tip of the wire 22 and opens and closes around a support shaft 27 a on both small arms 27.
[0019]
A finger is put on the finger ring 14 of the first finger hanger 4 and the finger hanger groove 18 of the second finger hanger 5 to place the second finger hanger 5 in the interlocking cable extending direction P in the cylinder 2 (the cylinder extending direction). ), The cutter 25 opens and closes via the wire 22.
[0020]
The present embodiment has the following features (a) to (d).
(A) Since the cylinder 2 is composed of the split cylinder 6 divided into two, the inside of the cylinder 2 is opened. Therefore, when the hole for inserting the interlocking measure 21 and the notch 9 for inserting the wire receiving portion 19 of the second finger-hanging body 5 are formed in the cylindrical body 2, the forming can be easily performed.
[0021]
(B) When assembling the second finger-hanging body 5 to the cylinder 2, the both split cylinders 6 of the cylinder 2 are respectively inserted into both insertion holes 20 a of the second finger-hanging body 5 from the base end side, Since it is only necessary to insert the wire receiving portion 19 of the second finger-hanging body 5 into the notch 9 between the split cylinders 6 from the base end side opening portion 9a, the assembly can be easily performed.
[0022]
(C) When the finger ring 14 of the first finger ring 4 is assembled to the proximal end of the cylinder 2, the split cylinder 6 divided into two is superimposed on the neck 16 of the finger ring 14 from the outside. Further, the peripheral protrusion 17 of the neck 16 can be engaged with the peripheral groove 10 of the split cylinder 6 simply by inserting the bottom body 13 on the outer side of the split cylinder 6, so that the assembly is facilitated. In addition, the two split cylinders 6 can be supported and the finger ring 14 can be pivotally supported.
[0023]
(D) Since the finger ring 14 of the first finger hanger 4 rotates, when the second finger hanger 5 is moved closer to and away from the buttocks 13 of the first finger hanger 4, it is easy to remotely operate the cutter 25.
[0024]
In addition to the above-described embodiments, the following configurations (a) to (c) may be used.
(A) As shown in FIG. 3, the bottom body 13 and the finger ring 14 are integrated in the first finger hanging body 4, and the neck 16 of the finger hanging ring 14 has the function of the bottom body 13. That is, the guide projection 6a is provided on the outer periphery of the split cylinder 6 of the cylindrical body 2, the guide groove 16a is provided on the inner periphery of the neck shaft 16, and the split cylinder 6 is inserted into the neck shaft 16 to be fitted. Both guide protrusions 6a are engaged with the guide grooves 16a. Accordingly, the first finger-hanging body 4 is guided by the both guide projections 6a and the guide groove 16a (rotation guide portion) and is supported so as to be rotatable around the interlocking cable extending direction P in the cylindrical body 2. In addition, a locking projection 16b is formed in the neck 16 so as to be engaged with the opening 9a on the base end side of the notch 9 to position the split cylinder 6.
[0025]
(B) The split cylinder 6 of the cylinder 2 is divided into three or more.
(C) In the above embodiment, the opening 9 a is provided on the base end side of the notch 9 between the split cylinders 6 and is closed by the finger ring 14 of the first finger hanger 4 . In case of providing only the base end opening portion 9a of this is to bifurcated by integrating both split sleeve 6 of the cylindrical body 2 at its tip end, integrated or mouth body 3 separately You may do it .
[0026]
The technical ideas (other than the claims) that can be grasped from each embodiment will be described together with the effects. (A) The first finger-hanging body 4 of claim 1 is supported so as to be rotatable around the interlocking cable extending direction P in the cylindrical body 2 with respect to the cylindrical body 2. Therefore, when the second finger hanger 5 is moved closer to and away from the first finger hanger 4, the cutter 25 can be easily operated remotely.
[0027]
【The invention's effect】
According to the endoscope treatment tool according to the first invention, since the cylindrical body (2) of the operation portion (1) is divided into the split cylinder (6), the cylindrical body (2) is easily formed. be able to. Moreover, the front-end | tip part and base end part of the cylinder (2) which superposed | polymerized this split cylinder (6) can be supported so that it may not mutually isolate | separate by a mouth body (3) and a 1st finger hook (4). .
[0028]
According to the second invention, in addition to the effects of the first invention, the first finger hanging body (4) is further divided into a bottom body (13) and a finger hanging ring (14) so that the finger hanging ring (14) can be rotated. Therefore, when the second finger hanging body (5) is moved closer to and away from the buttocks (13) of the first finger hanging body (4), it is easy to remotely operate the treatment section (25).
[0029]
According to the third invention, the assembly of the second finger-hanging body (5) to the cylindrical body (2) can be easily performed.
[Brief description of the drawings]
FIG. 1A is an exploded perspective view showing an endoscope treatment tool according to the present embodiment, and FIG. 1B is a cross-sectional view of a second finger-hanging body in FIG.
2A is an assembled front view showing the endoscope treatment tool of FIG. 1A, and FIG. 2B is a partial longitudinal sectional view of FIG.
FIG. 3 (a) is a partial front view showing an endoscope treatment tool according to another embodiment, and FIG. 3 (b) is a partial vertical sectional view of FIG.
4A is a plan view showing a conventional endoscope treatment tool, and FIG. 4B is a partial longitudinal sectional view taken along line YY of FIG. 4A.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Operation part, 2 ... Cylindrical body, 3 ... Mouth body, 4 ... 1st finger-hanging body, 5 ... 2nd finger-hanging body, 6 ... Split tube, 9 ... Cutting, 9a ... Opening part, 13 ... Buttocks, 14 ... Finger ring, 19 ... wire receiving part, 20a ... insertion hole 21 ... interlocking cable, 25 ... cutter as treatment part, P ... interlocking cable extending direction.

Claims

In an endoscope treatment tool that operates a treatment section (25) provided at a distal end portion of an interlocking cord (21) inserted into the body through an endoscope by remotely operating the operation section (1),
The operating portion (1) includes a split cylinder (6) divided from each other, and a mouth (3) that supports the tip of the cylinder (2) obtained by superimposing the split cylinder (6) so as not to separate from each other, A first finger hanger (4) that supports the base end of the cylinder (2) so as not to be separated from each other, and a second finger hanger (5) that is movably supported with respect to the cylinder (2),
The proximal end of the interlocking cord (21) passing through the cylindrical body (2) is connected to the second finger hanging body (5), and the treatment section (25) can be remotely operated by moving the second finger hanging body (5). The structure of the remote control part in the treatment tool for endoscopes characterized by the above-mentioned.

The first finger-hanging body (4) includes a bottom body (13) that supports the base ends of the cylindrical body (2) so as not to be separated from each other, and a cylindrical body (2) with respect to the buttocks (13) and the cylindrical body (2). ) And a finger ring (14) supported so as to be rotatable around the interlocking cable extending direction (P).
The second finger-hanging body (5) moves along the interlocking cable extending direction (P) and approaches and separates from the buttocks (13) of the first finger-hanging body (4). The structure of the remote control part in the treatment tool for endoscopes of Claim 1.

In an endoscope treatment tool that operates a treatment section (25) provided at a distal end portion of an interlocking cord (21) inserted into the body through an endoscope by remotely operating the operation section (1),
The operation unit (1) includes a cylinder (2) having a split cylinder (6), and a second finger hanging body (5) supported so as to be movable with respect to the cylinder (2).
Opening the proximal end side of the split sleeve over the outer peripheral proximal end side from the outer peripheral front end portion (6) the cut to extend the cuts (9) between (9) of the cylindrical body (2),
A cylindrical body (3) which supports the distal end of the cylindrical body (2) obtained by superimposing the split cylinder (6) so as not to be separated from each other, and a base end side opening (9a) of the cut (9) ( comprising a split sleeve (6) a first finger placing member supporting the base end portion so as not to separate from each other of 2) (4) and said operating unit (1),
A wire receiving portion (19) is formed integrally with the second finger-hanging body (5), and an insertion hole (20a) is formed through which the split cylinder (6) is inserted with the wire receiving portion (19) interposed therebetween,
The proximal end portion of the interlocking cord (21) passing through the cylindrical body (2) is connected to the wire receiving portion (19) of the second finger hanging body (5), and the treatment portion is moved by moving the second finger hanging body (5). The structure of the remote control unit in the endoscope treatment tool, wherein (25) can be remotely operated.