JPH0744923B2 - Suction line switching device for endoscope - Google Patents
Suction line switching device for endoscopeInfo
- Publication number
- JPH0744923B2 JPH0744923B2 JP61282982A JP28298286A JPH0744923B2 JP H0744923 B2 JPH0744923 B2 JP H0744923B2 JP 61282982 A JP61282982 A JP 61282982A JP 28298286 A JP28298286 A JP 28298286A JP H0744923 B2 JPH0744923 B2 JP H0744923B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder body
- suction
- valve body
- cylinder
- valve
- 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
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Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、内視鏡の吸引管路に介挿されて、吸引管路
の切換えを行う内視鏡の吸引管路切換装置に関するもの
である。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction conduit switching device for an endoscope which is inserted into a suction conduit of an endoscope and switches the suction conduit. is there.
［従来の技術］ 内視鏡の吸引管路切換装置にはいろいろな形式のものが
採用されているが、近年は使用後の洗浄消毒やコストダ
ウンなどを目的として、例えば実公昭60-15523号公報に
示されるような非常にシンプルな形式のものが多く用い
られるようになってきた。第５図はその構造を示してお
り、シリンダ体51の底部には挿入部先端に開口する吸引
管路52aが接続され、腹部には吸引装置に連通する吸引
管路52bが接続されている。そしてゴム等の弾性体で一
体に形成された弁体54がシリンダ体51の下部を閉塞する
と共にシリンダ体の口部55を開いており、通常は通孔56
及びシリンダ体口部55を介して外気が吸引管路52bから
吸引装置に吸引されるようになっている。一方、弁体54
の頭部には指あて体57が突設されており、この指あて体
57をシリンダ体内方へ押すことにより、第５図の２点鎖
線に示されるように弁体54が移動してシリンダ体51の下
部を連通させると共に口部55を閉塞し、吸引管路52aを
介して吸引口から吸引が行われるようになっている。[Prior Art] Various types of endoscope suction line switching devices have been adopted, but in recent years, for example, for the purpose of cleaning and disinfecting after use and cost reduction, for example, Japanese Utility Model Publication No. 60-15523. Many very simple formats have been used as shown in the official gazette. FIG. 5 shows the structure thereof. A suction conduit 52a opening to the tip of the insertion portion is connected to the bottom of the cylinder body 51, and a suction conduit 52b communicating with the suction device is connected to the abdomen. A valve body 54 integrally formed of an elastic body such as rubber closes the lower portion of the cylinder body 51 and opens the mouth portion 55 of the cylinder body, and normally a through hole 56 is formed.
Also, outside air is sucked into the suction device from the suction pipe line 52b through the cylinder body opening 55. On the other hand, the valve body 54
The head has a finger-contact body 57 protruding from it.
By pushing 57 toward the inside of the cylinder, the valve body 54 moves as shown by the chain double-dashed line in FIG. 5 to connect the lower portion of the cylinder body 51 and close the mouth portion 55, thereby closing the suction conduit 52a. Suction is performed through the suction port.
［発明が解決しようとする問題点］ 内視鏡の吸引管路切換装置の弁体は、構造をシンプルに
するためには上述のように弾性体で一体に形成されるの
がよいと考えられる。しかし上述の従来の内視鏡の吸引
管路切換装置は、第６図に示されるように、指あて体57
を斜め方向に押してしまうと、弾性体で形成された弁体
54がシリンダ体51内で変形して弁体54全体が傾いてしま
うので、シリンダ体の口部55が閉じきれず、指あて体57
を押し込んだときにも結局口部55から外気が吸引され
て、挿入部先端の吸引口からの吸引力が著しく低下して
しまう。そして、内視鏡を操作する術者は、挿入、観
察、処置などに多大の神経を集中しなければならないか
ら、このような弁操作の１つ１つに細かい神経を使って
はおられず、検査中に弁体54を斜めに押して、思うよう
に吸引が行われない事態がしばしば発生するという欠点
が生じていた。[Problems to be Solved by the Invention] In order to simplify the structure, it is considered that the valve body of the suction line switching device of the endoscope is preferably integrally formed of an elastic body as described above. . However, as shown in FIG. 6, the above-mentioned conventional suction line switching device for an endoscope has a finger contact body 57.
Is pushed diagonally, the valve body made of elastic material
Since the valve 54 is deformed in the cylinder body 51 and the valve body 54 is tilted as a whole, the mouth portion 55 of the cylinder body cannot be closed and the finger contact body 57
Even when the is pushed in, the outside air is eventually sucked from the mouth 55, and the suction force from the suction port at the tip of the insertion portion is significantly reduced. And since the operator who operates the endoscope has to concentrate a great deal of nerves on insertion, observation, treatment, etc., it is not possible to use fine nerves for each such valve operation. There was a drawback that the valve body 54 was pushed obliquely during the inspection, and the suction was often not performed as desired.
この発明は、そのような従来の欠点を解消し、弁体が斜
めになりにくく、かつ、たとえ斜めになったとしても先
端の吸引口から正常な吸引が行なわれる内視鏡の吸引管
路切換装置を提供することを目的とする。The present invention solves the above-mentioned conventional drawbacks, makes it difficult for the valve element to be inclined, and even if the valve element is inclined, normal suction is performed from the suction port at the distal end of the endoscope. The purpose is to provide a device.
［問題点を解決するための手段］ 上述の問題点を解決するための、本発明による内視鏡の
吸引管路切換装置は、 挿入部の先端に開口する吸引口と吸引装置との間を連通
する吸引管路の途中にシリンダ体を介挿し、そのシリン
ダ体内に弾性体よりなる弁体を外方に附勢して進退自在
に挿入すると共に、上記シリンダ体外に突出する指あて
体を上記弁体の頭部に設けて、通常は吸引装置が吸引口
と遮断されてシリンダ体の口部を介して外気と連通し、
指あて体を押して弁体をシリンダ体内方に移動させると
吸引装置と吸引口とが連通してシリンダ体の口部は閉塞
されるようにした内視鏡の吸引管路切換装置において、
上記指あて体を押したときに上記弁体がシリンダ体に対
して傾くのを防止する傾き防止手段と、指あて体を押し
て弁体を傾いたときにもシリンダ体の口部を閉塞するシ
ール手段とを設けたことを特徴とする。[Means for Solving the Problems] A suction line switching device for an endoscope according to the present invention for solving the above-mentioned problems has a suction port opened at the distal end of an insertion portion and a suction device. A cylinder body is inserted in the middle of the communicating suction pipe line, and a valve body made of an elastic body is biased outwardly into the cylinder body so as to be able to advance and retreat. Provided at the head of the valve body, the suction device is normally disconnected from the suction port and communicates with the outside air through the mouth of the cylinder body,
In the suction pipe line switching device of the endoscope, when the finger pressing body is pushed to move the valve body toward the inside of the cylinder, the suction device communicates with the suction port to close the mouth portion of the cylinder body.
A tilt preventing means for preventing the valve body from tilting with respect to the cylinder body when the finger touch body is pushed, and a seal for closing the mouth portion of the cylinder body even when the finger touch body is pushed to tilt the valve body. And means are provided.
［作用］ 指あて体を外方から押すと、弁体がシリンダ体に対して
傾くのを傾き防止手段が防止するので、指あて体を斜め
方向に押しても弁体は傾き難く、比較的まっすぐにシリ
ンダ体内に押し込まれる。[Operation] When the finger contact body is pushed from the outside, the tilt preventing means prevents the valve body from tilting with respect to the cylinder body. Therefore, even if the finger contact body is pushed in an oblique direction, the valve body does not tilt easily and is relatively straight. Is pushed into the cylinder body.
また、術者の著しい不注意などによって指あて体が斜め
方向に強く押され、弁体が傾いてシリンダ体内に押し込
まれた場合にも、シリンダ体の口部をシール手段が閉塞
するので、吸引装置は外気と連通せず、吸引口だけが吸
引装置と連通して、挿入部先端から正常に吸引が行われ
る。In addition, even if the fingertip body is strongly pushed in the diagonal direction due to the operator's carelessness and the valve body is tilted and pushed into the cylinder body, the mouth of the cylinder body is closed by the sealing means. The device does not communicate with the outside air, but only the suction port communicates with the suction device, and suction is normally performed from the tip of the insertion portion.
［実施例］ 本発明の一実施例を第１図ないし第４図にもとづいて説
明する。[Embodiment] An embodiment of the present invention will be described with reference to FIGS. 1 to 4.
第１図は実施例の縦断面図であり、第２図はそのII−II
線切断面図である。図中、１は、内視鏡の挿入部先端２
に開口する吸引口、３は、内視鏡の外部に設けられた吸
引装置であり、これら吸引口１と吸引装置３との間を連
通するように吸引管路４（4a,4b）が設けられている。
５は上記吸引管路４の途中に介挿された吸引管路切換装
置であり、内視鏡の操作部（図示せず）に設けられてい
る。この吸引管路切換装置について以下に説明する。FIG. 1 is a longitudinal sectional view of the embodiment, and FIG. 2 is its II-II.
FIG. In the figure, 1 is the tip 2 of the insertion portion of the endoscope.
The suction port 3 opened to the inside is a suction device provided outside the endoscope, and a suction conduit 4 (4a, 4b) is provided so as to communicate between the suction port 1 and the suction device 3. Has been.
Reference numeral 5 denotes a suction conduit switching device that is inserted in the middle of the suction conduit 4 and is provided in an operation section (not shown) of the endoscope. This suction line switching device will be described below.
６は、例えばステンレス鋼などの金属製又は合成樹脂製
のシリンダ体であり、上記吸引口１と連通する吸引管路
4aがシリンダ体６の底部6aに接続され、吸引装置３と連
通する吸引管路4bが胴部6bに接続され、シリンダ体６の
口部6cは開放形成されている。７は、ゴム等の弾性体に
より形成されて上記シリンダ体６内に進退自在に挿入さ
れた弁体であり、この弁体７の頭部には操作用の指あて
体８が一体に形成して設けられている。上記弁体７は、
シリンダ体６内の下部に形成された弁座6dに下方から当
接してシリンダ体６内を閉塞する下部弁体7dと、シリン
ダ体の口部6cの上端面に外方から対向するように上記指
あて体８の裏側に設けられたシール弁7c（シール手段）
と、これら下部弁体7dとシール弁7cとを連結する連結棒
体7aなどにより構成され、これらがすべて弾性体により
一体に形成されている。Reference numeral 6 denotes a cylinder body made of metal such as stainless steel or made of synthetic resin, and a suction conduit communicating with the suction port 1.
4a is connected to the bottom portion 6a of the cylinder body 6, the suction pipe line 4b communicating with the suction device 3 is connected to the body portion 6b, and the mouth portion 6c of the cylinder body 6 is formed open. Reference numeral 7 denotes a valve body which is formed of an elastic body such as rubber and is inserted into the cylinder body 6 so as to be able to move back and forth. The head portion of the valve body 7 is integrally formed with a finger pad 8 for operation. Is provided. The valve body 7 is
The lower valve body 7d that abuts the valve seat 6d formed in the lower portion of the cylinder body 6 from below and closes the inside of the cylinder body 6, and the lower valve body 7d that faces the upper end surface of the mouth portion 6c of the cylinder body from the outside. Seal valve 7c (sealing means) provided on the back side of the finger rest body 8
And a connecting rod body 7a for connecting the lower valve body 7d and the seal valve 7c, and these are all integrally formed by an elastic body.
上記シール弁7cは上記シリンダ体の口部6cに対向するよ
うに薄肉円筒状に形成されており、通常は第１図に示さ
れるようにシリンダ体の口部6cから離れて位置し、指あ
て体８を押して弁体７がシリンダ体６内方に移動する
と、第３図に示されるようにシリンダ体の口部6cに当接
して口部6cを閉塞するようになっている。また、指あて
体８が斜め方向に押されて弁体が傾いた時にも、第３図
に示されるようにこのシール弁7cが変形をしてシリンダ
体の口部6cを完全に閉塞するようになっている。The sealing valve 7c is formed in a thin-walled cylindrical shape so as to face the mouth portion 6c of the cylinder body, and is normally located away from the mouth portion 6c of the cylinder body as shown in FIG. When the body 8 is pushed to move the valve body 7 inwardly of the cylinder body 6, as shown in FIG. 3, it abuts against the mouth portion 6c of the cylinder body to close the mouth portion 6c. Further, even when the finger contact body 8 is pushed in an oblique direction and the valve body is tilted, the seal valve 7c is deformed to completely close the mouth portion 6c of the cylinder body as shown in FIG. It has become.
また、上記弁体７には、シリンダ体の口部6c付近でシリ
ンダ体６内にゆるく嵌合する嵌合体7b（傾き防止手段）
が形成され、嵌合体7bがシリンダ体６内に嵌合すること
により弁体７が傾くのを防止している。また、その嵌合
面に軸方向に複数の通気溝7eが形成されており、シリン
ダ体の口部6cを外気に連通している。一方、上記指あて
体８の近傍からシリンダ体の口部6cを覆うように、傘体
10が弾性体により弁体６と一体に形成されている。そし
て、この傘体10は、その縁部10aが、シリンダ体６から
突出固設されたフランジ体11に当接して、弁体７及び指
あて体８を常にシリンダ体外方に附勢している。また、
上記傘体10の側壁には複数の通孔12が穿設されており、
この通孔12を介してシリンダ体の口部6cが外気と連通し
ている。Further, the valve body 7 has a fitting body 7b (inclination preventing means) which is loosely fitted in the cylinder body 6 near the mouth portion 6c of the cylinder body.
And the fitting body 7b is fitted into the cylinder body 6 to prevent the valve body 7 from tilting. Further, a plurality of ventilation grooves 7e are formed in the fitting surface in the axial direction, and the mouth portion 6c of the cylinder body communicates with the outside air. On the other hand, the umbrella body is covered so as to cover the mouth portion 6c of the cylinder body from the vicinity of the finger contact body 8.
An elastic body 10 is formed integrally with the valve body 6. The edge portion 10a of the umbrella body 10 abuts on the flange body 11 projectingly fixed from the cylinder body 6 to constantly urge the valve body 7 and the finger contact body 8 outward of the cylinder body. . Also,
A plurality of through holes 12 are formed in the side wall of the umbrella body 10,
The mouth portion 6c of the cylinder body communicates with the outside air through the through hole 12.
このように構成された上記実施例によれば、通常は第１
図に示されるように、下部弁体7dが弁座6dに当接して吸
引装置３と吸引口１との間が閉塞遮断される一方で、吸
引装置３が通孔12とシリンダ体口部6c及び通気溝7eを介
して外気と連通して外気を吸引している。According to the above-mentioned embodiment configured in this way, normally the first
As shown in the figure, the lower valve body 7d abuts the valve seat 6d to close and block between the suction device 3 and the suction port 1, while the suction device 3 causes the through hole 12 and the cylinder body opening 6c. And communicates with the outside air through the ventilation groove 7e to suck the outside air.
そして指あて体８を外方から押すと、第３図に示される
ように、弁体７がシリンダ体６内方に移動して、下部弁
体7dが弁座6dから離れて吸引装置３が吸引口１と連通す
る一方で、シリンダ体口部6cがシール弁7cにより閉塞さ
れる。このとき、シリンダ体６内に弁体の嵌合体7bが嵌
合するので、指あて体８を斜め方向に押しても弁体７は
傾き難く、比較的まっすぐにシリンダ体６内に押し込ま
れる。When the finger contact body 8 is pushed from the outside, the valve body 7 moves inwardly of the cylinder body 6 as shown in FIG. 3, the lower valve body 7d is separated from the valve seat 6d, and the suction device 3 moves. While communicating with the suction port 1, the cylinder body port portion 6c is closed by the seal valve 7c. At this time, since the fitting body 7b of the valve body is fitted in the cylinder body 6, the valve body 7 is difficult to tilt even if the finger contact body 8 is pushed in an oblique direction, and is pushed into the cylinder body 6 relatively straightly.
また、術者の著しい不注意などによって指あて体８が強
く斜め方向に押されると、弁体７が傾いてしまう場合も
あるが、そのような場合にも、第４図に示されるように
シール弁7cが弾性体によって薄肉円筒状に形成されてい
るので、シール弁7cは全体的に変形しながらシリンダ体
口部6cを全周にわたって閉塞し、外気はシリンダ体６内
と連通せず、挿入部先端の吸引口だけが吸引装置と連通
して挿入部先端から吸引が行われる。Further, when the finger contact body 8 is strongly pushed in an oblique direction due to a remarkable carelessness of the operator, the valve body 7 may tilt, but even in such a case, as shown in FIG. Since the seal valve 7c is formed in a thin-walled cylindrical shape by the elastic body, the seal valve 7c closes the cylinder body opening 6c over the entire circumference while deforming as a whole, and the outside air does not communicate with the inside of the cylinder body 6, Only the suction port at the tip of the insertion portion communicates with the suction device, and suction is performed from the tip of the insertion portion.
尚、上記実施例において、指あて体８及び傘体10は弁体
７と一体に形成されているが、必ずしもその必要はな
く、金属その他によって別立体に形成してもよい。In the above embodiment, the finger contact body 8 and the umbrella body 10 are formed integrally with the valve body 7, but they are not necessarily required and may be formed in another solid body such as metal.
［発明の効果］ 本発明の内視鏡の吸引管路切換装置によれば、傾き防止
手段を設けたことにより弁体が傾き難く、しかも、たと
え弁体が傾いてもシリンダ体の口部がシール手段によっ
て閉塞されるので、弁体を斜め方向に強く押したとして
も、挿入部先端の吸引口から正常に吸引が行われる優れ
た効果を有する。[Advantages of the Invention] According to the suction line switching device for an endoscope of the present invention, since the inclination preventing means is provided, the valve body is unlikely to be inclined, and even if the valve body is inclined, the mouth portion of the cylinder body is Since it is closed by the sealing means, even if the valve body is strongly pushed in the oblique direction, there is an excellent effect that suction is normally performed from the suction port at the tip of the insertion portion.
第１図は本発明の一実施例の縦断面図、第２図はそのII
−II線切断面図、第３図は弁体がまっすぐ押し込まれた
状態の縦断面図、第４図は弁体が傾いて押し込まれた状
態の縦断面図、第５図及び第６図は従来の内視鏡の吸引
管路切換装置の縦断面図である。 １…吸引口、３…吸引装置、４…吸引管路、５…吸引管
路切換装置、６…シリンダ体、6c…口部、７…弁体、7a
…連結棒体、7b…嵌合体、7c…シール弁、7d…下部弁
体、7e…通気溝、８…指あて体、10…傘体、12…通孔。FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, and FIG. 2 is its II.
-II line cross-sectional view, FIG. 3 is a vertical cross-sectional view of the state where the valve body is pushed straight, FIG. 4 is a vertical cross-sectional view of the state where the valve body is tilted and pushed, and FIG. 5 and FIG. It is a longitudinal cross-sectional view of the suction pipe line switching device of the conventional endoscope. DESCRIPTION OF SYMBOLS 1 ... Suction port, 3 ... Suction device, 4 ... Suction line, 5 ... Suction line switching device, 6 ... Cylinder body, 6c ... Port part, 7 ... Valve body, 7a
... connecting rod body, 7b ... fitting body, 7c ... seal valve, 7d ... lower valve body, 7e ... ventilation groove, 8 ... finger contact body, 10 ... umbrella body, 12 ... through hole.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−10031（ＪＰ，Ａ) 実開 昭58−179101（ＪＰ，Ｕ) 実開 昭59−193402（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-58-10031 (JP, A) Actually opened 58-179101 (JP, U) Actually opened 59-193402 (JP, U)
Claims (2)
との間を連通する吸引管路の途中にシリンダ体を介挿
し、そのシリンダ体内に弾性体よりなる弁体を外方に附
勢して進退自在に挿入すると共に、上記シリンダ体外に
突出する指あて体を上記弁体の頭部に設けて、通常は吸
引装置が吸引口と遮断されてシリンダ体の口部を介して
外気と連通し、指あて体を押して弁体をシリンダ体内方
に移動させると吸引装置と吸引口とが連通してシリンダ
体の口部は閉塞されるようにした内視鏡の吸引管路切換
装置において、 上記指あて体を押したときに上記弁体がシリンダ体に対
して傾くのを防止するための傾き防止手段と、指あて体
を押して弁体が傾いたときにもシリンダ体の口部を閉塞
するように弾性体によって薄肉の略円筒状に形成されて
端面が全周においてシリンダ体の口部に圧接されるシー
ル手段とを設けたことを特徴とする内視鏡の吸引管路切
換装置。1. A cylinder body is inserted in the middle of a suction pipe line that communicates between a suction port opened at the tip of an insertion part and a suction device, and a valve body made of an elastic body is attached to the outside of the cylinder body. It is inserted into the cylinder body by pushing it forward and backward, and a finger rest protruding outside the cylinder body is provided on the head of the valve body, and normally the suction device is shut off from the suction port and the outside air is passed through the mouth of the cylinder body. A suction line switching device for an endoscope in which the suction device communicates with the suction port so that the mouth of the cylinder is closed when the valve body is moved into the cylinder body by pushing the finger contact body. A tilt preventing means for preventing the valve body from tilting with respect to the cylinder body when the finger touch body is pushed, and the mouth portion of the cylinder body even when the valve body is tilted by pushing the finger touch body. Is formed into a thin cylindrical shape by an elastic body so as to close the end surface. Is provided with sealing means that is pressed against the mouth of the cylinder body over the entire circumference.
けられてシリンダ体内に嵌合する嵌合体である特許請求
の範囲第１項記載の内視鏡の吸引管路切換装置。2. The suction line switching device for an endoscope according to claim 1, wherein the inclination preventing means is a fitting body which is integrally provided with the valve body and fits in the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61282982A JPH0744923B2 (en) | 1986-11-26 | 1986-11-26 | Suction line switching device for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61282982A JPH0744923B2 (en) | 1986-11-26 | 1986-11-26 | Suction line switching device for endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63135119A JPS63135119A (en) | 1988-06-07 |
| JPH0744923B2 true JPH0744923B2 (en) | 1995-05-17 |
Family
ID=17659664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61282982A Expired - Fee Related JPH0744923B2 (en) | 1986-11-26 | 1986-11-26 | Suction line switching device for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744923B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4893920B2 (en) * | 2005-07-15 | 2012-03-07 | 横河電機株式会社 | Electromagnetic flow meter |
| JP5430137B2 (en) * | 2008-12-16 | 2014-02-26 | Ｈｏｙａ株式会社 | Remote control button device for electronic endoscope |
| JP5602712B2 (en) * | 2011-11-21 | 2014-10-08 | 富士フイルム株式会社 | Endoscope suction line switching device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810031A (en) * | 1981-07-09 | 1983-01-20 | オリンパス光学工業株式会社 | Suction change-over valve of endoscope |
| JPS58179101U (en) * | 1982-05-26 | 1983-11-30 | オリンパス光学工業株式会社 | Endoscope |
| JPS59193402U (en) * | 1983-06-10 | 1984-12-22 | オリンパス光学工業株式会社 | Endoscope suction control device |
-
1986
- 1986-11-26 JP JP61282982A patent/JPH0744923B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63135119A (en) | 1988-06-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |