JPH01148234A - Endoscope - Google Patents

Endoscope

Info

Publication number
JPH01148234A
JPH01148234A JP62306891A JP30689187A JPH01148234A JP H01148234 A JPH01148234 A JP H01148234A JP 62306891 A JP62306891 A JP 62306891A JP 30689187 A JP30689187 A JP 30689187A JP H01148234 A JPH01148234 A JP H01148234A
Authority
JP
Japan
Prior art keywords
treatment instrument
treatment device
passage opening
channel pipe
center
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.)
Granted
Application number
JP62306891A
Other languages
Japanese (ja)
Other versions
JPH0440011B2 (en
Inventor
Shigeto Magai
成人 真貝
Ichiro Nakamura
一郎 中村
Masaaki Nakazawa
中沢 雅明
Masanori Hamazaki
浜崎 昌典
Yousuke Yoshimoto
羊介 吉本
Hideki Shimonaka
秀樹 下中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP62306891A priority Critical patent/JPH01148234A/en
Publication of JPH01148234A publication Critical patent/JPH01148234A/en
Publication of JPH0440011B2 publication Critical patent/JPH0440011B2/ja
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02Agglomerated materials, e.g. artificial aggregates
    • C04B18/027Lightweight materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)

Abstract

PURPOSE:To improve the insertion property of a treatment device even when the angle of inclination of a treatment device insert mouth body is increased with respect to the center axis of an operating part, by making the axial line, which connects the center of the opening part of the first passage connected to a main channel pipe and the center of the opening part of the third passage connected to an auxiliary channel pipe, eccentric so as to position the same on the side opposite to the treatment device insert mouth body with respect to the center axis of the operating part. CONSTITUTION:The axial line (c) connecting the center of the opening part of the first passage connected to a main channel pipe 9 and the center of the opening part 27 of the third passage connected to an auxiliary channel pipe 28 is made eccentric so as to be positioned on the side opposite to the side provided with a treatment device insert mouth body 8 with respect to the center axis (b) of an operating part 1. Therefore, the space from the center axis (b) of the operating part 1 to the outside part 34 in the curve direction of one branch passage 31 becomes large. In inserting and detaching a treatment device 24 having a hard part 24a with respect to the treatment device insert mouth body 8 of a treatment device insert part 6, though the angle (alpha) of inclination of the treatment device insert mouth body 8 to the center axis (b) of the operating part 1 is made as large as 40 deg., the insertion property of the treatment device 24 can be improved.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、挿入部内全長に亙り設けられる主チャンネル
管が吸引通路および処置具挿通路として兼用される内視
鏡に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an endoscope in which a main channel tube provided over the entire length of the insertion section serves both as a suction passage and a treatment instrument insertion passage.

〔従来の技術〕[Conventional technology]

内視鏡にあっては、挿入部内全長に亙り設けられた主チ
ャンネル管を吸引通路および処置具挿通路として兼用し
たものがある。
Some endoscopes have a main channel tube provided along the entire length of the insertion section that serves both as a suction passage and a treatment instrument insertion passage.

ところで、このような内視鏡の構造には、従来、特願昭
56−118678号や特開昭58−19221号公報
で示されるような技術が採用されている。これには、操
作部に設けられた把持部より先端側に処置具挿入部の処
置具挿入口体を上記操作部長手軸方向に対して後端側に
傾斜して設けるとともに、上記把持部より後端側に吸引
制御装置を配設し、また上記操作部内に複数、例えば3
方向に分岐した通路を有する連結部材を設けている。そ
して、上記連結部材の第1の通路開口部を上記主チャン
ネル管と接続し、第2の通路開口部を上記処置具挿入口
体と接続し、第3の通路開口部を上記吸引制御装置に連
通ずる副チャンネル管と接続することが行われている。
Incidentally, in the structure of such an endoscope, techniques such as those disclosed in Japanese Patent Application No. 118678/1982 and Japanese Patent Application Laid-open No. 19221/1982 have been adopted. In this case, the treatment instrument insertion opening body of the treatment instrument insertion part is provided on the distal side of the grip part provided on the operation part so as to be inclined toward the rear end side with respect to the longitudinal axis direction of the operation part, and the A suction control device is disposed on the rear end side, and a plurality of suction control devices, for example, three
A connecting member having passages branching in directions is provided. The first passage opening of the connecting member is connected to the main channel pipe, the second passage opening is connected to the treatment instrument insertion port body, and the third passage opening is connected to the suction control device. A connection is made with a communicating sub-channel pipe.

したがって、上記吸引制御装置を操作することによって
上記副チャンネル管、連結部材を介して主チャンネル管
を吸引通路として使用することができる他、上記処置具
挿入部の処置具挿入口体から鉗子等の処置具を挿脱する
ことによって上記連結部材を介して主チャンネル管を処
置具挿通路として使用することができるようになってい
る。
Therefore, by operating the suction control device, it is possible to use the main channel pipe as a suction passage via the sub-channel pipe and the connecting member, and also to insert forceps, etc. By inserting and removing the treatment instrument, the main channel pipe can be used as a passage for inserting the treatment instrument via the connecting member.

ところで、このような従来の内視鏡にあっては、上記連
結部材における上記車チャンネル管と接続された第1の
通路開口部の中心と、上記副チャンネル管と接続された
第3の通路開口部の中心とを結ぶ軸線は、上記操作部の
中心軸に対して上記処置具挿入口体を取付けた側に位置
している。
By the way, in such a conventional endoscope, the center of the first passage opening connected to the main channel pipe in the connecting member and the third passage opening connected to the auxiliary channel pipe The axis connecting the center of the operating section is located on the side where the treatment instrument insertion port body is attached with respect to the central axis of the operating section.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

ところが、上記特願昭56−118678号で示される
技術では、操作部の小形化を図るために処置具挿入口体
における操作部の中心軸に対する傾斜角を大きくする手
段をとっている(上記傾斜角を大きくすれば、把持部を
把持する手と処置具とが干渉し難くなり、その分操作部
を短くできる)が、上記傾斜角を大きくすると、処置具
の挿入角度が大きくなり、したがって特に先端硬質部を
有する処置具にあっては、その挿通が困難となる問題が
あった。
However, in the technique disclosed in the above-mentioned Japanese Patent Application No. 118678/1983, in order to downsize the operating section, a measure is taken to increase the angle of inclination of the treatment instrument insertion port body with respect to the central axis of the operating section (the above-mentioned inclination If the angle is made larger, the hand holding the grip part and the treatment tool will be less likely to interfere with each other, and the operating part can be shortened accordingly.) However, if the angle of inclination is made larger, the insertion angle of the treatment tool will be larger, and therefore A treatment instrument having a hard tip has a problem in that it is difficult to insert the instrument.

本発明は、上記問題点に着目してなされたもので、処置
具挿入口体における操作部の中心軸に対する傾斜角を大
きくしても、処置具の挿通性を良くすることができる内
視鏡を提供することを目的とする。
The present invention has been made in view of the above-mentioned problems, and provides an endoscope that allows for improved insertion of a treatment instrument even if the angle of inclination of the treatment instrument insertion port body with respect to the central axis of the operating section is increased. The purpose is to provide

〔問題点を解決するための手段および作用〕この内視鏡
では、主チャンネル管と接続された第1の通路開口部の
中心と、副チャンネル管と接続された第3の通路開口部
の中心とを結ぶ軸線を、操作部の中心軸に対して処置具
挿入口体とは反対側に偏心させることで、処置具挿入口
体から処置具を挿脱するにあたり、処置具挿入口体にお
ける操作部の中心軸に対する傾斜角を大きくしても、処
置具の挿通性が良くなる。
[Means and effects for solving the problem] In this endoscope, the center of the first passage opening connected to the main channel tube and the center of the third passage opening connected to the subchannel tube By eccentrically connecting the axis line between the Even if the inclination angle of the part with respect to the central axis is increased, the insertion property of the treatment instrument is improved.

〔実施例〕〔Example〕

以下、本発明を第1図ないし第4図に示す一実施例にも
とづいて説明する。第4図は内視鏡の概略構成を示し、
1は把持部2を有する操作部、3は操作部1の先端部に
接続され、可撓管4の先端部に図示しない彎曲部および
先端構成部を直列に接続してなる挿入部、5は操作部1
の後端部に設けられた接眼部である。周知のように、上
記挿入部3の彎曲部は、操作部1に設けられた図示しな
い操作ノブを回動操作することにより彎曲するようにな
っている。また、上記操作部゛1には、把持部2よりも
先端側に位置して処置具挿入部6が設けられ、把持部2
よりも後端側に位置して吸引制御装置7および図示しな
いユニバーサルコードが設けられている。上記処置具挿
入部6の処置具挿入口体8は、操作部1の長手軸方向に
対して後端側に傾斜して設けられている。すなわち、第
1図および第3図に示すように、処置具挿入口体8は、
その中心軸aが操作部1の中心軸すに対して角度αをな
すように傾斜している。この場合、上記αは401′に
設定されている。そして、上記挿入部3の先端構成部に
は図示しない対物レンズが設けられており、この対物レ
ンズで結像した像が挿入部3および操作部1内に設けら
れた像伝達光学繊維束を介して接眼部5で観察されるよ
うになっている。また、挿入部3および操作部1内には
、その他図示しないライトガイドケーブルを介して照明
光を導く図示しない照明用光学繊維束、図示しない送気
・送水ボタンを操作することにより送気・送水するため
の図示しない送気・送水チューブ、主チャンネル管9等
の内蔵物が設けられている。
The present invention will be explained below based on an embodiment shown in FIGS. 1 to 4. Figure 4 shows the schematic configuration of the endoscope.
Reference numeral 1 denotes an operating part having a grip part 2; 3, an insertion part connected to the distal end of the operating part 1; and formed by connecting a curved part and a distal end component (not shown) in series to the distal end of a flexible tube 4; 5, an insertion part; Operation unit 1
This is an eyepiece provided at the rear end of the camera. As is well known, the curved portion of the insertion section 3 is bent by rotating an operation knob (not shown) provided on the operation section 1. Further, the operating section 1 is provided with a treatment instrument insertion section 6 located on the distal end side of the gripping section 2.
A suction control device 7 and a universal cord (not shown) are provided at the rear end side. The treatment instrument insertion opening body 8 of the treatment instrument insertion section 6 is provided so as to be inclined toward the rear end side with respect to the longitudinal axis direction of the operating section 1 . That is, as shown in FIGS. 1 and 3, the treatment instrument insertion port body 8 is
Its central axis a is inclined at an angle α with respect to the central axis of the operating section 1. In this case, α is set to 401'. An objective lens (not shown) is provided at the distal end component of the insertion section 3, and an image formed by this objective lens is transmitted through an image transmission optical fiber bundle provided inside the insertion section 3 and the operation section 1. It is designed to be observed through the eyepiece section 5. In addition, inside the insertion section 3 and the operation section 1, there is an optical fiber bundle for illumination (not shown) that guides illumination light via a light guide cable (not shown), and air/water supply by operating an air/water supply button (not shown). Built-in components such as an air/water supply tube and a main channel pipe 9 (not shown) are provided for this purpose.

上記主チャンネル管9は挿入部3内全長に亙り設けられ
ており、その先端部が挿入部3の先端構成部に開口して
いる。また、この主チャンネル管9の後端部は、操作部
1内に設けられ、3方向に分岐した通路を有する三方管
継手等の連結部材10の第1の通路開口部11に接続さ
れている。
The main channel tube 9 is provided over the entire length inside the insertion section 3, and its distal end is open to the distal end component of the insertion section 3. The rear end of the main channel pipe 9 is connected to a first passage opening 11 of a connecting member 10, such as a three-way joint, which is provided in the operating section 1 and has passages branching in three directions. .

上記連結部材10は、操作部1を構成する筒体29にビ
ス止め等により固定されている。また、上 肥土チャン
ネル管9と第1の通路開口部11との接続構造を詳しく
説明すると、主チャンネル管9の後端部にはテーバ部9
aが設けられており、このテーバ部9aは上記第1の通
路開口部11に設けられたテーパ口金11aに外嵌され
ている。
The connecting member 10 is fixed to the cylindrical body 29 constituting the operating section 1 with screws or the like. Further, to explain in detail the connection structure between the upper soil channel pipe 9 and the first passage opening 11, the rear end of the main channel pipe 9 has a tapered portion 9.
a is provided, and this tapered portion 9a is externally fitted onto a tapered mouthpiece 11a provided in the first passage opening 11.

また、上記テーバ部9aの外周面にはテーパ管12がス
ライド自在に設けられており、このテーパ管12を上記
第1の通路開口部11にねじ込まれた押え部材13によ
って押圧することにより、上記主チャンネル管9の後端
部を第1の通路開口部11に液密に接続している。
Further, a tapered pipe 12 is slidably provided on the outer peripheral surface of the tapered portion 9a, and by pressing the tapered pipe 12 with a presser member 13 screwed into the first passage opening 11, the above-mentioned The rear end of the main channel pipe 9 is connected in a fluid-tight manner to the first passage opening 11 .

また、上記連結部材10の第2の通路開口部14には、
上記処置具挿入口体8がバヨネット構造により接続され
て一方の分岐通路31が形成されている。この第2の通
路開口部14と処置具挿入口体8との接続構造を詳しく
説明すると、処置具挿入口体8の一端部には爪部15が
設けられており、この爪部15は上記第2の通路開口部
14の外周面に設けられた図示しない複数の係止片に係
脱自在に係合するようになっている。そして、把持部2
の把持部カバー16に設けられた挿通孔17から処置具
挿入口体8の一端部を挿入し、その爪部15を上記係止
片に係合することにより、上記処置具挿入口体8の一端
部を第2の通路開口部14に接続している。また、処置
具挿入口体8の他端部外周面には位置決めナツト18が
螺合されており、この位置決めナツト18の一端面と上
記処置具挿入口体8に設けられた溝部19との間には位
置決め部材20が設けられている。そして、上記位置決
めナツト18をねじ込んで位置決め部材20を押圧する
ことにより、この位置決め部材20の一側面が把持部カ
バー16の外周面に形成された当接面21に押付けられ
、それによって処置具挿入口体8の把持部カバー16に
対する回転止めがなされるようになっている。さらに、
処置具挿入口体8の他端部には鍔部22が設けられてお
り、この鍔部22には鉗子栓23が着脱自在に嵌着され
ている。この鉗子栓23には、鉗子等の処置具24を挿
脱するためのスリット23aが設けられている。なお、
25は処置具挿入口体8と第2の通路開口部14との間
の液密を保つシール部材、26は処置具挿入口体8と把
持部カバー16との間の液密を保つOリングである。
Further, the second passage opening 14 of the connecting member 10 includes:
The treatment instrument insertion port body 8 is connected by a bayonet structure to form one branch passage 31. To explain in detail the connection structure between the second passage opening 14 and the treatment instrument insertion port body 8, a claw portion 15 is provided at one end of the treatment instrument insertion port body 8. It is configured to removably engage with a plurality of locking pieces (not shown) provided on the outer circumferential surface of the second passage opening 14 . And the grip part 2
By inserting one end of the treatment instrument insertion port body 8 through the insertion hole 17 provided in the gripping portion cover 16 and engaging the claw portion 15 with the locking piece, the treatment instrument insertion port body 8 is closed. One end is connected to the second passage opening 14 . Further, a positioning nut 18 is screwed onto the outer peripheral surface of the other end of the treatment instrument insertion port body 8, and between one end surface of the positioning nut 18 and a groove portion 19 provided in the treatment instrument insertion port body 8. A positioning member 20 is provided. By screwing in the positioning nut 18 and pressing the positioning member 20, one side of the positioning member 20 is pressed against the abutment surface 21 formed on the outer circumferential surface of the gripping part cover 16, whereby the treatment instrument is inserted. Rotation of the mouth body 8 with respect to the grip portion cover 16 is prevented. moreover,
A flange 22 is provided at the other end of the treatment instrument insertion port body 8, and a forceps plug 23 is detachably fitted into the flange 22. This forceps plug 23 is provided with a slit 23a for inserting and removing a treatment tool 24 such as forceps. In addition,
25 is a sealing member that maintains liquid tightness between the treatment instrument insertion port body 8 and the second passage opening 14, and 26 is an O ring that maintains liquid tightness between the treatment instrument insertion port body 8 and the grip portion cover 16. It is.

さらに、上記連結部材10の第3の通路開口部27には
、副チャンネル管28の先端部が半田付は等により接続
されて他方の分岐通路32が形成されている。この場合
、上記主チャンネル管9、第1の通路開口部11、他方
の分岐通路32、第3の通路開口部27、副チャンネル
管28は直線的に設けられている。また、上記副チャン
ネル管28の後端部にはチューブ30が接続されており
、このチューブ30は上記吸引制御装置7を経由して上
記ユニバーサルコードに設けられた図示しない吸引口金
に導かれている。
Furthermore, the tip of the sub-channel pipe 28 is connected to the third passage opening 27 of the connecting member 10 by soldering or the like to form the other branch passage 32. In this case, the main channel pipe 9, the first passage opening 11, the other branch passage 32, the third passage opening 27, and the auxiliary channel pipe 28 are provided linearly. A tube 30 is connected to the rear end of the auxiliary channel pipe 28, and the tube 30 is led to a suction cap (not shown) provided on the universal cord via the suction control device 7. .

したがって、上記吸引制御装置7を操作することによっ
て上記副チャンネル管28、連結部材10を介して主チ
ャンネル管9を吸引通路として使用することができる他
、上記処置具挿入部6の処置具挿入口体8から処置具2
4を挿脱することによって上記連結部材10を介して主
チャンネル管9を処置具挿通路として使用することがで
きるようになっている。
Therefore, by operating the suction control device 7, the main channel pipe 9 can be used as a suction passage via the sub-channel pipe 28 and the connecting member 10, and the treatment instrument insertion opening of the treatment instrument insertion section 6 can be used. Treatment tool 2 from body 8
4, the main channel tube 9 can be used as a treatment instrument insertion path via the connecting member 10.

そして、上記連結部材10の他方の分岐通路32は、上
記操作部1の中心軸すに対して処置具挿入口体8が設け
られた側とは反対側に偏心している。すなわち、上記第
1の通路開口部11の中心と第3の通路開口部27の中
心とを結ぶ軸線Cは、上記操作部1の中心軸すに対して
処置具挿入口体8が設けられた側とは反対側に偏心して
いる。
The other branch passage 32 of the connecting member 10 is eccentric to the side opposite to the side where the treatment instrument insertion port body 8 is provided with respect to the central axis of the operating section 1. That is, the axis C connecting the center of the first passage opening 11 and the center of the third passage opening 27 is the axis C that connects the center of the first passage opening 11 and the center of the third passage opening 27. It is eccentric to the opposite side.

したがって、上記操作部1の中心軸すから一方の分岐通
路31の彎曲方向の外側部分34までの空間が大きくな
っている。
Therefore, the space from the central axis of the operating section 1 to the outer portion 34 of one branch passage 31 in the curved direction is large.

しかして、処置具挿入部6の処置具挿入口体8から挿入
された硬質部24aを有する処置具24は、連結部材1
0の一方の分岐通路31を通過して主チャンネル管9へ
と導かれるようになっている。そして、上記硬質部24
aが一方の分岐通路31を通過する際、上記操作部1の
中心軸すから一方の分岐通路31の彎曲方向の外側部分
34までの空間が大きくなっていることから、上記硬質
部24aは一方の分岐通路31の彎曲方向の内側部分3
3と接することなく、外側部分34のみと接するように
なり、したがって処置具24の挿通が妨げられることを
防止できる。
Therefore, the treatment instrument 24 having the hard part 24a inserted from the treatment instrument insertion port body 8 of the treatment instrument insertion portion 6 is connected to the connecting member 1.
0 and is led to the main channel pipe 9 through one of the branch passages 31. Then, the hard part 24
When the hard part 24a passes through one of the branch passages 31, the space from the central axis of the operating part 1 to the outer part 34 in the curved direction of one of the branch passages 31 is large. The inner portion 3 of the branch passage 31 in the curved direction
3 and comes into contact only with the outer portion 34, thus preventing the insertion of the treatment instrument 24 from being obstructed.

かくして、処置具挿入部6の処置具挿入口体8から硬質
部24aを有する処置具24を挿脱するにあたり、処置
具挿入口体8における操作部1の中心軸すに対する傾斜
角αを40°と大きくしたにも拘らず、処置具24の挿
通性を良(することができる。したがって、上記傾斜角
αを40°と大きくした分だけ把持部2の長さを短くす
ることができ、ひいては内視鏡全体を小形化することが
できる。また、処置具24の挿通性を良くすることがで
きるので、この処置具24の挿脱作業をより軽い力量で
行なうことができる。さらに、主チャンネル管9、第1
の通路開口部11、他方の分岐通路32、第3の通路開
口部27、副チャンネル管28が直線的に設けられてい
るので、これらの内部に汚物等が溜り難くすることがで
きる。加えて、特願昭61−275398号で示される
従来の技術では、主チャンネル管の端部に屈曲部を形成
し、この屈曲部に処置具挿入口体を直接接続することが
行われているが、これでは処置具の挿脱の繰返しにより
上記屈曲部の彎曲方向の内側部分および外側部分が損傷
し、水漏れに至ることもあるという問題があった。そこ
で、本発明では処置具挿入口体8から挿入された処置具
24の挿入方向を連結部材10の一方の分岐通路31で
変えるようにしたので、処置具24の挿脱の繰返しによ
り主チャンネル管9に負担がかかることはなく、シたが
って水漏れに至るなどといった問題を防止することがで
きる。
Thus, when inserting and removing the treatment instrument 24 having the hard part 24a from the treatment instrument insertion port body 8 of the treatment instrument insertion portion 6, the inclination angle α of the treatment instrument insertion port body 8 with respect to the central axis of the operating portion 1 is set to 40°. Even though the angle of inclination α is increased to 40°, the insertion of the treatment instrument 24 is improved. Therefore, the length of the gripping portion 2 can be shortened by the amount that the inclination angle α is increased to 40°, and as a result, the length of the gripping portion 2 can be shortened by the amount The entire endoscope can be made smaller. Also, since the insertion of the treatment instrument 24 can be improved, insertion and removal of the treatment instrument 24 can be performed with less force.Furthermore, the main channel Tube 9, 1st
Since the passage opening 11, the other branch passage 32, the third passage opening 27, and the auxiliary channel pipe 28 are provided in a straight line, it is possible to prevent dirt and the like from accumulating inside them. In addition, in the conventional technique disclosed in Japanese Patent Application No. 61-275398, a bent part is formed at the end of the main channel tube, and the treatment instrument insertion port body is directly connected to this bent part. However, this poses a problem in that repeated insertion and removal of the treatment instrument may damage the inner and outer portions of the bent portion in the curved direction, which may lead to water leakage. Therefore, in the present invention, since the insertion direction of the treatment instrument 24 inserted from the treatment instrument insertion port body 8 is changed in one branch passage 31 of the connecting member 10, the main channel tube can be repeatedly inserted and removed. 9, and problems such as water leakage can be prevented.

第5図および第6図は本発明の他の実施例の要部を示す
。本実施例は、上記一実施例において、連結部材10の
他方の分岐通路32をできる限り操作部1の中心軸すに
対して処置具挿入口体8が設けられた側とは反対側に偏
心させ、上記連結部材10の幅方向両側部10a、10
bを切り欠いたものである。
FIGS. 5 and 6 show essential parts of other embodiments of the present invention. In this embodiment, in the above-mentioned embodiment, the other branch passage 32 of the connecting member 10 is eccentrically positioned as far as possible with respect to the central axis of the operating section 1 on the side opposite to the side where the treatment instrument insertion port body 8 is provided. and the widthwise both sides 10a, 10 of the connecting member 10.
This is a cutout of b.

このような構成によれば、本発明の所期の目的を達成す
ることができる他、操作部1の中心軸すから他方の分岐
通路32の底面までの距離をより大きくすることができ
、また連結部材10と筒体29との間に挿入部3を構成
する図示しないイメージガイドファイバー、ライトガイ
ドファイバー等を設けることができる。 ・ 〔発明の効果〕 以上説明したように、本発明によれば、処置具挿入口体
における操作部の中心軸に対する傾斜角を大きくしたに
も拘らず、処置具の挿通性を良くすることができ、した
がって上記傾斜角を大きくした分だけ把持部の長さを短
くすることができ、ひいては内視鏡全体を小形化するこ
とができる。
According to such a configuration, in addition to being able to achieve the intended purpose of the present invention, the distance from the central axis of the operating section 1 to the bottom of the other branch passage 32 can be made larger; An image guide fiber, light guide fiber, etc. (not shown) that constitute the insertion section 3 can be provided between the connecting member 10 and the cylindrical body 29. - [Effects of the Invention] As explained above, according to the present invention, it is possible to improve the insertion property of the treatment instrument even though the angle of inclination of the treatment instrument insertion port body with respect to the central axis of the operating section is increased. Therefore, the length of the gripping portion can be shortened by an amount corresponding to the increased inclination angle, and the endoscope as a whole can be made smaller.

また、処置具の挿通性を良くすることができるので、こ
の処置具の挿脱作業をより軽い力量で行なうことができ
る。さらに、処置具挿入口体から挿入された処置具の挿
入方向を連結部材の一方の分岐通路で変えるようにした
ので、処置具の挿脱の繰返しにより主チャンネル管に負
担がかかることはなく、シたがって水漏れに至るなどと
いった問題を防止することができる。
Furthermore, since the insertion property of the treatment instrument can be improved, the operation of inserting and removing the treatment instrument can be performed with less strength. Furthermore, since the insertion direction of the treatment instrument inserted from the treatment instrument insertion port body is changed at one branch passage of the connecting member, the main channel pipe is not burdened by repeated insertion and removal of the treatment instrument. Therefore, problems such as water leakage can be prevented.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図ないし第4図は本発明の一実施例を示すもので、
第1図は連結部材およびその周辺部の構造を処置具とと
もに示す断面図、第2図は第1図中■−■線に沿う断面
図、第3図は連結部材およびその周辺部の構造を示す断
面図、第4図は内視鏡全体の概略構成を示す斜視図、第
5図および第6図は本発明の他の実施例を示すもので、
第5図は連結部材およびその周辺部の構造を示す断面図
、第6図は第5図中Vl−Vl線に沿う断面図である。 1・・・操作部、2・・・把持部、3・・・挿入部、7
・・・吸引制御装置、8・・・処置具挿入口体、9・・
・主チャンネル管、10・・・連結部材、11・・・第
1の通路開口部、14・・・第2の通路開口部、27・
・・第3の通路開口部、28・・・副チャンネル管。 出願人代理人 弁理士  坪井 淳
1 to 4 show an embodiment of the present invention,
Figure 1 is a cross-sectional view showing the structure of the connecting member and its surroundings together with the treatment instrument, Figure 2 is a cross-sectional view taken along the line ■-■ in Figure 1, and Figure 3 is the structure of the connecting member and its surroundings. 4 is a perspective view showing a schematic configuration of the entire endoscope, and FIGS. 5 and 6 show other embodiments of the present invention.
FIG. 5 is a sectional view showing the structure of the connecting member and its surrounding area, and FIG. 6 is a sectional view taken along the line Vl--Vl in FIG. DESCRIPTION OF SYMBOLS 1... Operation part, 2... Gripping part, 3... Insertion part, 7
...Suction control device, 8...Treatment instrument insertion port body, 9...
- Main channel pipe, 10... Connecting member, 11... First passage opening, 14... Second passage opening, 27.
...Third passage opening, 28...Subchannel pipe. Applicant's agent Patent attorney Atsushi Tsuboi

Claims (1)

【特許請求の範囲】[Claims] 操作部に設けられた把持部と、この把持部より先端側に
配設された処置具挿入口体と、上記把持部より後端側に
配設された吸引制御装置と、3方向に分岐した通路を有
し、第1の通路開口部が挿入部内全長に亙り設けられた
主チャンネル管と接続され、第2の通路開口部が上記処
置具挿入口体と接続され、第3の通路開口部が上記吸引
制御装置に連通する副チャンネル管と接続された連結部
材とを具備した内視鏡において、上記第1の通路開口部
の中心と第3の通路開口部の中心とを結ぶ軸線を、上記
操作部の中心軸に対して上記処置具挿入口体とは反対側
に偏心させたことを特徴とする内視鏡。
The device is branched into three directions, including a grip provided on the operating portion, a treatment instrument insertion port body disposed on the distal end side of the grip portion, and a suction control device disposed on the rear end side of the grip portion. a passage, a first passage opening connected to a main channel pipe provided over the entire length inside the insertion section, a second passage opening connected to the treatment instrument insertion port body, and a third passage opening. In the endoscope, the endoscope is provided with a connecting member connected to a sub-channel pipe communicating with the suction control device, and an axis connecting the center of the first passage opening and the center of the third passage opening, An endoscope characterized in that the operating section is eccentrically centered on a side opposite to the treatment instrument insertion port with respect to a central axis thereof.
JP62306891A 1987-12-04 1987-12-04 Endoscope Granted JPH01148234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62306891A JPH01148234A (en) 1987-12-04 1987-12-04 Endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62306891A JPH01148234A (en) 1987-12-04 1987-12-04 Endoscope

Publications (2)

Publication Number Publication Date
JPH01148234A true JPH01148234A (en) 1989-06-09
JPH0440011B2 JPH0440011B2 (en) 1992-07-01

Family

ID=17962499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62306891A Granted JPH01148234A (en) 1987-12-04 1987-12-04 Endoscope

Country Status (1)

Country Link
JP (1) JPH01148234A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002238842A (en) * 2001-02-19 2002-08-27 Asahi Optical Co Ltd Endoscope
CN103370000A (en) * 2011-11-25 2013-10-23 奥林巴斯医疗株式会社 Endoscope

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS649601U (en) * 1987-07-06 1989-01-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS649601U (en) * 1987-07-06 1989-01-19

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002238842A (en) * 2001-02-19 2002-08-27 Asahi Optical Co Ltd Endoscope
CN103370000A (en) * 2011-11-25 2013-10-23 奥林巴斯医疗株式会社 Endoscope
CN103370000B (en) * 2011-11-25 2015-12-09 奥林巴斯株式会社 Endoscope

Also Published As

Publication number Publication date
JPH0440011B2 (en) 1992-07-01

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