JPH08308792A - Pipeline changeover device for endoscope - Google Patents
Pipeline changeover device for endoscopeInfo
- Publication number
- JPH08308792A JPH08308792A JP7122458A JP12245895A JPH08308792A JP H08308792 A JPH08308792 A JP H08308792A JP 7122458 A JP7122458 A JP 7122458A JP 12245895 A JP12245895 A JP 12245895A JP H08308792 A JPH08308792 A JP H08308792A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- side fluid
- conduit
- fluid pipeline
- operation 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.)
- Granted
Links
Landscapes
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、外部装置に接続され
た２本の元側流体管路と内視鏡の挿入部先端に開口する
２本の先側流体管路との間の連通状態を切り換え操作す
るための内視鏡の管路切換装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication state between two source side fluid conduits connected to an external device and two front side fluid conduits opened at the tip of an insertion portion of an endoscope. The present invention relates to a conduit switching device for an endoscope for switching operation.
【０００２】[0002]
【従来の技術】この種の内視鏡の管路切換装置は、外部
の送気ポンプから空気が送られてくる給気管路と、外部
の送水タンクから水が送られてくる給水管路と、内視鏡
の挿入部先端に空気を送り出すための送気管路と、水を
送り出すための送水管路とがシリンダに接続されてい
て、ピストン状の操作弁をシリンダ内で進退操作するこ
とによって、給気管路と送気管路の接続状態及び給水管
路と送水管路の接続状態が切り替わるようになってい
る。2. Description of the Related Art An endoscope line switching device of this type includes an air supply line to which air is sent from an external air supply pump and a water supply line to which water is sent from an external water supply tank. , An air supply pipe for sending out air to the tip of the insertion portion of the endoscope and a water supply pipe for sending out water are connected to the cylinder, and by moving the piston-like operation valve back and forth in the cylinder. The connection state between the air supply line and the air supply line and the connection state between the water supply line and the water supply line are switched.
【０００３】そのような内視鏡の管路切換装置において
は、各管路の連通状態と閉塞状態を確実に切り換えるた
めに、４本の管路がシリンダの側壁に順次位置をずらし
て接続されているものが多い。In such a conduit switching device for an endoscope, four conduits are connected to the side wall of the cylinder while shifting their positions in order to reliably switch the communication state and the closed state of each conduit. There are many things.
【０００４】しかし、そのように各管路をシリンダの側
壁に順次位置をずらして接続するとシリンダの長さが長
くなってしまうので、装置を小型化する必要がある場合
等には、給気管路と送気管路及び給水管路と給水管路の
各接続開口を、各々シリンダの側壁のあい対向する位
置、即ち、シリンダの軸線に垂直な同一円周上に形成し
ている。However, if the pipes are connected to the side wall of the cylinder in such a manner that the positions thereof are sequentially displaced, the length of the cylinder becomes long. Therefore, when it is necessary to downsize the device, the air supply pipe is provided. The air supply pipe line, the water supply pipe line, and the connection holes of the water supply pipe line are formed at positions facing each other between the side walls of the cylinder, that is, on the same circumference perpendicular to the axis of the cylinder.
【０００５】[0005]
【発明が解決しようとする課題】内視鏡の管路切換装置
において、流体管路の接続開口間を閉塞するためには、
Ｏリングのような弾力性のあるシール部材が、ピストン
状の操作弁の外周面に装着されて用いられる。DISCLOSURE OF THE INVENTION In a conduit switching device for an endoscope, in order to close a space between connection openings of a fluid conduit,
An elastic seal member such as an O-ring is used by being attached to the outer peripheral surface of a piston-shaped operation valve.
【０００６】しかし、上述のように２つの流体管路の接
続開口がシリンダの側壁のあい対向する位置に形成され
ていると、Ｏリングが両開口と平行になるので、両開口
間を完全に閉塞することができない。そのため、例えば
送気又は送水が行われてはいけない状態でもある程度の
漏れが発生して、いろいろな不都合が発生していた。However, as described above, when the connection openings of the two fluid pipelines are formed at the positions facing each other on the side wall of the cylinder, the O-rings are parallel to both openings, so that the space between the openings is completely formed. Cannot be blocked. Therefore, for example, some leakage occurs even in a state where air supply or water supply should not be performed, causing various inconveniences.
【０００７】なお、そのような二つの接続開口の間をシ
ールするために、操作弁の外周にＯリングを斜めに装着
したものもあるが、Ｏリングがすぐに損傷してしまうの
で現実的ではない。There is also an O-ring obliquely attached to the outer periphery of the operation valve in order to seal between such two connection openings, but this is not realistic because the O-ring is immediately damaged. Absent.
【０００８】また、シリンダの軸線方向に位置をずらし
て接続されている隣あう接続開口間のシールもＯリング
で行われるが、Ｏリングが両側の接続開口のどちらにも
触れないように接続開口どうしを十分に離して形成する
必要があるので、操作弁の操作ストロークが長くなって
しまっていた。The O-ring also seals between the adjacent connection openings that are connected by shifting the positions in the axial direction of the cylinder, but the O-ring does not touch either of the connection openings on both sides. Since it is necessary to form them so that they are sufficiently separated from each other, the operation stroke of the operation valve has become long.
【０００９】そこで本発明は、小型でしかも流体の漏れ
がなくて、操作性がよく耐久性にも優れた内視鏡の管路
切換装置を提供することを目的とする。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an endoscope conduit switching device which is small in size, has no fluid leakage, and has excellent operability and durability.
【００１０】[0010]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の内視鏡の管路切換装置は、流体を駆動する
外部装置に接続された第１及び第２の２本の元側流体管
路と内視鏡の挿入部先端に開口する第１及び第２の２本
の先側流体管路とが接続されたシリンダ内でピストン状
の操作弁を軸線方向に進退操作することによって、上記
第１の先側流体管路に対する上記第１の元側流体管路の
接続状態と上記第２の先側流体管路に対する上記第２の
元側流体管路の接続状態とが切り換わるようにした内視
鏡の管路切換装置において、上記第１の元側流体管路を
上記シリンダの底部に接続して上記第１の先側流体管路
を上記シリンダの側壁面に接続すると共に、上記第２の
元側流体管路の接続開口と上記第２の先側流体管路の接
続開口とを上記シリンダの側壁面の上記シリンダの軸線
に垂直な略同一円周上に形成し、上記操作弁には、待機
状態において上記シリンダの底部と上記第１の先側流体
管路とを連通させる第１の連通路と、上記操作弁が上記
シリンダ内に押し込み操作されたときに上記第２の元側
流体管路の接続開口と上記第２の先側流体管路の接続開
口とを連通させる第２の連通路と、待機状態においては
上記第２の元側流体管路の接続開口の周囲と上記第２の
先側流体管路の接続開口の周囲とに密接し上記操作弁が
上記シリンダ内に押し込み操作されたときには上記第１
の先側流体管路の接続開口の周囲に密接する弾力性のあ
る閉塞部材を設けたことを特徴とする。In order to achieve the above-mentioned object, the conduit switching device for an endoscope according to the present invention includes a first and a second element connected to an external device for driving a fluid. To move the piston-like operation valve back and forth in the axial direction in a cylinder in which the side fluid conduit and the first and second two front fluid conduits opening at the tip of the insertion portion of the endoscope are connected. This disconnects the connection state of the first source side fluid pipeline from the first front side fluid pipeline and the connection state of the second source side fluid pipeline to the second front side fluid pipeline. In the conduit switching device for the endoscope, the first source side fluid conduit is connected to the bottom of the cylinder and the first leading side fluid conduit is connected to the side wall surface of the cylinder. At the same time, the connection opening of the second source-side fluid pipeline and the connection opening of the second front-side fluid pipeline are connected to each other. A side wall surface of the cylinder on substantially the same circumference perpendicular to the axis of the cylinder, and the operating valve communicates the bottom of the cylinder with the first front fluid pipe in a standby state. And a connection opening of the second source fluid conduit and a connection opening of the second front fluid conduit when the operation valve is pushed into the cylinder. And the periphery of the connection opening of the second source side fluid pipeline and the periphery of the connection opening of the second front side fluid pipeline in the standby state, and the operation valve is in the cylinder. When it is pushed in, the first
An elastic closing member that is in close contact with the periphery of the connection opening of the front side fluid conduit is provided.
【００１１】[0011]
【実施例】図面を参照して実施例を説明する。図１は、
本発明の第１の実施例を示しており、内視鏡の挿入部先
端１には、体腔内に空気を送り出すための送気管路２の
先端と、水を送り出すための送水管路３の先端とが開口
している。両管路２，３は、挿入部内では可撓性のある
合成樹脂製のチューブ２ａ，３ａによって形成されてい
る。Embodiments will be described with reference to the drawings. Figure 1
1 shows the first embodiment of the present invention, in which a distal end 1 of an air feeding conduit 2 for sending air into a body cavity and a water feeding conduit 3 for sending water are provided at a distal end 1 of an insertion portion of an endoscope. The tip is open. Both pipe lines 2 and 3 are formed by flexible synthetic resin tubes 2a and 3a in the insertion portion.
【００１２】挿入部の基端が接続された操作部４には、
シリンダ状の孔５（以下、単に「シリンダ５」と言う）
が操作部４を前後に貫通して形成されており、そのシリ
ンダ５内には、プラスチックで形成されたピストン状の
操作弁６が、軸方向に進退自在に嵌挿されている。そし
て、操作弁６の軸線位置には、貫通孔９が穿設されてい
る。The operating portion 4 to which the base end of the insertion portion is connected,
Cylinder-shaped hole 5 (hereinafter simply referred to as "cylinder 5")
Is formed so as to pass through the operation portion 4 in the front-rear direction, and a piston-like operation valve 6 made of plastic is fitted in the cylinder 5 thereof so as to be movable back and forth in the axial direction. A through hole 9 is formed at the axial position of the operation valve 6.
【００１３】操作弁６の前端部分はシリンダ５から前方
に突出していて、弾力性のあるゴム製のキャップ７が、
シリンダ５の口元を覆うと同時に操作弁６を前方に向か
って付勢している。The front end portion of the operation valve 6 projects forward from the cylinder 5, and a rubber cap 7 having elasticity is
At the same time as covering the mouth of the cylinder 5, the operation valve 6 is biased forward.
【００１４】そのキャップ７は、一端側が操作弁６の前
端部分に形成された溝６ａに嵌め込まれて固着され、他
端側がシリンダ５の口元部分に突設されたフランジ部８
に対して着脱可能に係合されている。One end of the cap 7 is fitted in and fixed to a groove 6a formed in the front end portion of the operation valve 6, and the other end side is provided with a flange portion 8 projecting from the mouth portion of the cylinder 5.
Is removably engaged with.
【００１５】そのフランジ部８には切り欠き８ａが形成
されていて、キャップ７側に形成された突起がその切り
欠き８ａに係合して、キャップ７の回転止めになってい
る。したがって、操作弁６はシリンダ５内で軸回りには
回転しない。A notch 8a is formed in the flange portion 8, and a projection formed on the cap 7 side engages with the notch 8a to prevent the cap 7 from rotating. Therefore, the operation valve 6 does not rotate around the axis in the cylinder 5.
【００１６】操作弁６の後端部分の斜視図及び断面図で
ある図２及び図３にも示されるように、操作弁６の後端
部分は大きな十字状のスリ割りによって４つに切り欠か
れている。As shown in FIGS. 2 and 3 which are perspective views and sectional views of the rear end portion of the operation valve 6, the rear end portion of the operation valve 6 is cut into four by a large cross-shaped slit. Has been.
【００１７】その４箇所に残った突片６ｂ部分にはバネ
性があり、弾性変形して撓むことができる。そして、そ
の突片６ｂの突端部分は外径が太く形成されていて、同
じように太い孔に形成されたシリンダ５の後端部分５ａ
の段部に係合している。The protrusions 6b remaining at the four places have spring properties and can be elastically deformed and bent. The protruding end portion of the protruding piece 6b is formed to have a large outer diameter, and the rear end portion 5a of the cylinder 5 is similarly formed in a thick hole.
Is engaged with the stepped portion of.
【００１８】したがって、図１に示される待機状態で
は、操作弁６はキャップ７によって前方に付勢されてい
て、後端の突片６ｂがそのストッパになり、シリンダ５
が図１の状態に位置決めされている。そして、操作弁６
を強く前方に引っ張れば、突片６ｂ部分が弾性変形して
操作弁６をシリンダ５内から抜くことができる。Therefore, in the standby state shown in FIG. 1, the operating valve 6 is urged forward by the cap 7, and the protruding piece 6b at the rear end serves as a stopper for the cylinder 5
Are positioned in the state of FIG. And the operation valve 6
When is strongly pulled forward, the projecting piece 6b is elastically deformed and the operation valve 6 can be pulled out from the cylinder 5.
【００１９】シリンダ５の底部には、シリンダ５の軸線
の延長線上に給気チューブ１２が接続されていて、シリ
ンダ５内と連通している。１１は、給気チューブ１２を
接続固定するための押さえナットである。給気チューブ
１２の基端は外部の送気ポンプ（図示せず）に接続され
ていて、加圧空気が送られてくる。An air supply tube 12 is connected to the bottom of the cylinder 5 on an extension of the axis of the cylinder 5 and communicates with the inside of the cylinder 5. Reference numeral 11 is a holding nut for connecting and fixing the air supply tube 12. The base end of the air supply tube 12 is connected to an external air supply pump (not shown) to send pressurized air.
【００２０】また、シリンダ５の側壁面に開口接続され
た給水管路１３には給水チューブ１３ａが接続され、そ
の給水管路１３の基端は外部の送水タンク（図示せず）
に接続されていて、加圧された水が送られてくる。Further, a water supply tube 13a is connected to the water supply pipe 13 which is open-connected to the side wall surface of the cylinder 5, and the base end of the water supply pipe 13 is an external water supply tank (not shown).
It is connected to and sends pressurized water.
【００２１】送水管路３の基端もシリンダ５の側壁面に
開口接続されており、給水管路１３の接続開口１３ｃと
送水管路３の接続開口３ｃとは、シリンダ５の軸線に垂
直な略同一円周上にあい対向して１８０°対称の位置に
形成されている。送気管路２の接続開口２ｃは、送水管
路３の接続開口３ｃより奥の位置においてシリンダ５の
側壁面に形成されている。The base end of the water supply conduit 3 is also open-connected to the side wall surface of the cylinder 5, and the connection opening 13c of the water supply conduit 13 and the connection opening 3c of the water supply conduit 3 are perpendicular to the axis of the cylinder 5. They are formed at 180-degree symmetrical positions facing each other on substantially the same circumference. The connection opening 2c of the air supply conduit 2 is formed on the side wall surface of the cylinder 5 at a position deeper than the connection opening 3c of the water supply conduit 3.
【００２２】操作弁６の外周面に形成された円周溝に
は、待機状態の時に給水管路１３と送水管路３の両接続
開口１３ｃ，３ｃの周囲に面する位置に、弾力性のある
例えばゴムによって環状に形成された閉塞部材１４が嵌
め込まれている。また、待機状態の時に送気管路２と貫
通孔９とを連通させる連通孔２０が、送気管路２の接続
開口２ｃに対向して操作弁６に穿設されている。The circumferential groove formed on the outer peripheral surface of the operation valve 6 is elastic at a position facing the periphery of both the connection openings 13c, 3c of the water supply conduit 13 and the water supply conduit 3 in the standby state. A closing member 14 formed of rubber, for example, in an annular shape is fitted therein. Further, a communication hole 20 for communicating the air supply conduit 2 and the through hole 9 in the standby state is provided in the operation valve 6 so as to face the connection opening 2c of the air supply conduit 2.
【００２３】操作弁６の外周面には、閉塞部材１４より
先側の円周上に連通溝２１が形成されており、操作弁６
がシリンダ５内に押し込まれると、給水管路１３と送水
管路３とが連通溝２１を介して連通する。２２は環状の
シール材である。On the outer peripheral surface of the operation valve 6, a communication groove 21 is formed on the circumference of the front side of the closing member 14, and the operation valve 6 is formed.
When is pushed into the cylinder 5, the water supply conduit 13 and the water supply conduit 3 communicate with each other through the communication groove 21. 22 is an annular seal material.
【００２４】このように構成された内視鏡の管路切換装
置によれば、待機状態においては、給気チューブ１２か
ら送られてくる空気が、シリンダ５内から操作弁６の貫
通孔９を介して外部に放出されている。According to the thus constructed endoscope line switching device, in the standby state, the air sent from the air supply tube 12 passes through the through hole 9 of the operation valve 6 from the inside of the cylinder 5. It is released to the outside through.
【００２５】給水管路１３の接続開口１３ｃの周囲と送
水管路３の接続開口３ｃの周囲とには閉塞部材１４が密
接していて、両接続開口１３ｃ，３ｃが完全に閉塞され
ているので、漏水は全く発生しない。Since the closing member 14 is in close contact with the periphery of the connection opening 13c of the water supply conduit 13 and the periphery of the connection opening 3c of the water supply conduit 3, both connection openings 13c, 3c are completely closed. , No water leakage occurs.
【００２６】そして、貫通孔９の先端開口９ａを指先で
塞ぐと、出口を失った空気が連通孔２０から送気管路２
へ送り込まれて、挿入部先端１へ送り出され、送気状態
になる。この場合も、給水管路１３と送水管路３の各接
続開口３ｃ，１３ｃは閉塞部材１４によって完全に閉塞
されているので、漏水は全く発生しない。When the tip end opening 9a of the through hole 9 is closed with a fingertip, the air having lost the outlet is discharged from the communication hole 20 into the air supply conduit 2
Is sent to the tip 1 of the insertion portion, and the air is supplied. Also in this case, since the connection openings 3c, 13c of the water supply conduit 13 and the water supply conduit 3 are completely closed by the closing member 14, no water leakage occurs.
【００２７】そして、さらに貫通孔９の先端開口９ａを
指先で塞いだまま操作弁６をシリンダ５内に押し込む
と、給水管路１３の接続開口１３ｃと送水管路３の接続
開口３ｃとに連通溝２１が対向する。When the operation valve 6 is pushed into the cylinder 5 while the tip opening 9a of the through hole 9 is closed with the fingertip, the connection opening 13c of the water supply conduit 13 and the connection opening 3c of the water supply conduit 3 are communicated with each other. The grooves 21 face each other.
【００２８】その結果、水が給水管路１３から送水管路
３内へ連通溝２１を介して送り込まれて、挿入部先端１
へ送り出され、送水状態になる。その状態の位置決めを
するために、フランジ部８の端面に当接するストッパ２
５が、キャップ７の内面に形成されている。As a result, water is sent from the water supply pipe 13 into the water supply pipe 3 through the communication groove 21, and the insertion portion tip 1
It is sent to and is in a water supply state. The stopper 2 that abuts the end surface of the flange portion 8 for positioning in that state
5 is formed on the inner surface of the cap 7.
【００２９】このときは、操作弁６に取り付けられた閉
塞部材１４が送気管路２の接続開口２ｃの周囲に密接し
て、送気管路２の接続開口２ｃが完全に閉塞されるの
で、空気漏れは全く発生しない。At this time, the closing member 14 attached to the operation valve 6 comes into close contact with the periphery of the connection opening 2c of the air supply conduit 2 and the connection opening 2c of the air supply conduit 2 is completely closed, so that the air No leaks occur.
【００３０】なお、給気チューブ１２に代えて、外部の
吸引装置に接続された吸引チューブを接続すれば、挿入
部先端１からの吸引と送水とを上記と同様にして切り換
え操作することができる。また、給水チューブ１３ａに
代えて吸引チューブを接続すれば、吸引と送気とを切り
換え操作することができる。If a suction tube connected to an external suction device is connected instead of the air supply tube 12, suction and water supply from the tip 1 of the insertion portion can be switched in the same manner as above. . If a suction tube is connected instead of the water supply tube 13a, it is possible to switch between suction and air supply.
【００３１】内視鏡使用後には、操作弁６を前方に引っ
張ってシリンダ５内から抜けば、シリンダ５内と操作弁
６を容易に洗浄することができ、シリンダ５内から給気
チューブ１２内をブラッシングできると共に、給水管路
１３から送水管路３内のブラッシングを一本のブラシで
行うことができる。After using the endoscope, the operation valve 6 can be easily washed by pulling the operation valve 6 forward and coming out of the cylinder 5, and the inside of the cylinder 5 and the air supply tube 12 can be easily washed. The brush can be brushed, and at the same time, the brush in the water supply pipe 3 from the water supply pipe 13 can be brushed.
【００３２】図５は、本発明の第２の実施例を示してお
り、待機状態のときに送気管路２の接続開口２ｃに対向
する操作弁６の部分に、一対のゴム弁１５ａ，１５ｂを
嵌め込んだものである。FIG. 5 shows a second embodiment of the present invention, in which a pair of rubber valves 15a and 15b are provided at the portion of the operation valve 6 facing the connection opening 2c of the air supply conduit 2 in the standby state. It is the one that was fitted.
【００３３】このゴム弁１５ａ，１５ｂは、その部分の
正面断面図である図４に示されるように、操作弁６に大
きく形成された孔内に回転しないように嵌め込まれてい
て、両ゴム弁１５ａ，１５ｂの境界面が待機状態におい
て送気管路２の接続開口２ｃの中心部分にくるように位
置合わせされている。As shown in FIG. 4 which is a front sectional view of the rubber valves 15a and 15b, the rubber valves 15a and 15b are fitted in a large hole formed in the operation valve 6 so as not to rotate, and both rubber valves 15a and 15b are fitted. The boundary surface of 15a and 15b is aligned so as to come to the central portion of the connection opening 2c of the air supply conduit 2 in the standby state.
【００３４】したがって、この実施例においては、待機
状態のときは、送気管路２への通路がゴム弁１５ａ，１
５ｂによって閉じられている。そして、貫通孔９の先端
開口９ａを指先で塞ぐことによって、出口を失った空気
が、二つのゴム弁１５ａ，１５ｂの間の境界部分を押し
広げながら送気管路２へ送り込まれて送気状態になる。Therefore, in this embodiment, in the standby state, the passage to the air supply line 2 is provided with the rubber valves 15a, 1a.
It is closed by 5b. Then, by closing the tip end opening 9a of the through hole 9 with a fingertip, the air that has lost the outlet is sent to the air supply conduit 2 while expanding the boundary portion between the two rubber valves 15a and 15b, and is in the air supply state. become.
【００３５】図６は、本発明の第３の実施例を示してお
り、シリンダ５を横断して送気管路２に真っ直ぐに通じ
る処置具挿入路２７を設けると共に、待機状態の時に送
気管路２と貫通孔９とを連通させる連通孔２０を、二つ
のゴム弁１５ａ，１５ｂの境界部に形成したものであ
る。なお、処置具挿入路２７の入口には、開閉自在な栓
体２９が取り付けられている。FIG. 6 shows a third embodiment of the present invention, in which a treatment tool insertion path 27 is provided across the cylinder 5 and straight to the air supply conduit 2, and the air supply conduit is provided in the standby state. A communication hole 20 for communicating the 2 and the through hole 9 is formed at the boundary between the two rubber valves 15a and 15b. A plug body 29 which can be opened and closed is attached to the entrance of the treatment instrument insertion path 27.
【００３６】このようにすることにより、待機状態のと
きに処置具挿入路２７から送気管路２に処置具類を挿入
することができる。なお、給気又は給水チューブ１２，
１３ａに代えて吸引チューブを接続できることについて
は、第１の実施例と同様である。By doing so, the treatment instrument can be inserted from the treatment instrument insertion path 27 into the air supply conduit 2 in the standby state. In addition, air supply or water supply tube 12,
The fact that a suction tube can be connected instead of 13a is the same as in the first embodiment.
【００３７】図７は、送気機能が不要で待機状態におい
て常時送水が必要な例えば胆道用内視鏡等に本発明を適
用した本発明の第４の実施例を示しており、給気チュー
ブ１２に代えて給水チューブ１３ａを接続し、給水チュ
ーブ１３ａに代えて吸引チューブ１１３を接続してあ
る。FIG. 7 shows a fourth embodiment of the present invention in which the present invention is applied to, for example, an endoscope for a biliary tract or the like, which does not need an air supply function and always needs to supply water in a standby state. A water supply tube 13a is connected in place of 12, and a suction tube 113 is connected in place of the water supply tube 13a.
【００３８】そして、操作弁６を軸線方向に貫通する貫
通孔９を形成するのをやめて、連通孔２０が待機状態に
おいてシリンダ５の後端部分５ａ内と送気管路２とを連
通するだけにしてある。その他は前述の第３の実施例と
同じである。このようにすることによって、待機状態で
は常時送水状態になり、操作弁６を押し込み操作すると
吸引状態になる。Then, the formation of the through hole 9 penetrating the operation valve 6 in the axial direction is stopped, and the communication hole 20 only connects the inside of the rear end portion 5a of the cylinder 5 with the air supply conduit 2 in the standby state. There is. Others are the same as those in the third embodiment described above. By doing so, the water supply state is always maintained in the standby state, and the suction state is obtained when the operation valve 6 is pushed.
【００３９】図８は、本発明の第５の実施例を示してお
り、操作弁６を２段階押し込み方式にして、送水と吸引
の切り換え操作をするようにしたものである。待機状態
では送水も吸引も行われない。なお、給水チューブ１３
ａに代えて給気チューブを接続すれば、送気と吸引を切
り換え操作することができる。FIG. 8 shows a fifth embodiment of the present invention, in which the operation valve 6 is of a two-step pushing type so as to perform switching operation between water supply and suction. In the standby state, neither water supply nor suction is performed. The water supply tube 13
If an air supply tube is connected instead of a, it is possible to switch between air supply and suction.
【００４０】ここでは、操作弁６の突出端側に、操作弁
６を深さＬ１とＬ２の２段階のストロークでシリンダ５
内に押し込み操作することができる操作ボタン機構１０
９が取り付けられている。Here, the operation valve 6 is provided on the protruding end side of the operation valve 6 with a stroke of two stages of depths L1 and L2.
Operation button mechanism 10 that can be pushed in
9 is attached.
【００４１】そして、操作弁６をＬ１だけ押し込むこと
により連通溝２１を介して給水管路１３と送水管路３と
が連通して送水状態になり、操作弁６をＬ２だけ押し込
めば、連通溝２１を介して吸引チューブ１１３と吸引管
路１０２とが連通して、挿入部先端１側から吸引を行う
ことができる。処置具挿入路２７から吸引管路１０２へ
の処置具挿入は、待機状態の時に行うことができる。By pushing the operating valve 6 by L1, the water supply pipe 13 and the water feeding pipe 3 communicate with each other through the communicating groove 21 to enter the water supply state, and if the operating valve 6 is pushed by L2, the communicating groove will be formed. The suction tube 113 and the suction conduit 102 are communicated with each other via 21, and suction can be performed from the insertion section distal end 1 side. The treatment tool insertion from the treatment tool insertion path 27 to the suction conduit 102 can be performed in the standby state.
【００４２】なお、この実施例においては、二つのゴム
弁１５ａ，１５ｂの一方のゴム弁１５ｂを軸方向に長く
形成して給水管路１３及び送水管路３の接続開口１３
ｃ，３ｃに対向させ、閉塞部材１４として兼用してい
る。In this embodiment, one rubber valve 15b of the two rubber valves 15a and 15b is formed long in the axial direction so that the connection opening 13 of the water supply pipe line 13 and the water supply pipe line 3 is formed.
It is made to face c and 3c and is also used as the closing member 14.
【００４３】[0043]
【発明の効果】本発明によれば、第１の元側流体管路の
接続開口をシリンダの底部に形成すると共に、第２の元
側流体管路の接続開口と第２の先側流体管路の接続開口
をシリンダの側壁のシリンダの軸線に垂直な略同一円周
上に形成したことにより、シリンダの長さを非常に短く
形成して、装置を小型化することができ、しかも各接続
開口の周囲に密接する閉塞部材を操作弁に設けて、各状
態において閉塞すべき接続開口が一つの閉塞部材により
直接閉塞されるようにしたので、接続開口が確実に閉塞
されて漏れが発生せず、操作ストロークを短くすること
ができて操作性もよい。また、Ｏリングを斜めに装着す
るような必要等がなくて、耐久性もよい。According to the present invention, the connection opening of the first source side fluid conduit is formed at the bottom of the cylinder, and the connection opening of the second source side fluid conduit and the second front side fluid conduit are formed. By forming the connection opening of the passage on the substantially same circumference on the side wall of the cylinder perpendicular to the axis of the cylinder, the length of the cylinder can be made very short, and the device can be downsized. Since the operating valve is provided with a closing member that is in close contact with the periphery of the opening so that the connecting opening to be closed in each state is directly closed by one closing member, the connecting opening is reliably closed and leakage does not occur. In addition, the operation stroke can be shortened and the operability is good. In addition, the O-ring does not need to be obliquely attached, and the durability is good.
【００４４】また、シリンダから操作弁を取り外して、
いずれの管路内でも容易にブラッシング掃除することが
できる。Also, by removing the operation valve from the cylinder,
Brushing cleaning can be easily performed in any of the conduits.
【図１】本発明の第１の実施例の側面断面図である。FIG. 1 is a side sectional view of a first embodiment of the present invention.
【図２】本発明の第１の実施例の操作弁の後端部分の斜
視図である。FIG. 2 is a perspective view of a rear end portion of the operation valve according to the first embodiment of the present invention.
【図３】本発明の第１の実施例の操作弁の後端部分の背
面断面図である。FIG. 3 is a rear cross-sectional view of the rear end portion of the operating valve according to the first embodiment of the present invention.
【図４】本発明の第２の実施例のゴム弁部分の正面断面
図である。FIG. 4 is a front sectional view of a rubber valve portion according to a second embodiment of the present invention.
【図５】本発明の第２の実施例の側面断面図である。FIG. 5 is a side sectional view of a second embodiment of the present invention.
【図６】本発明の第３の実施例の側面断面図である。FIG. 6 is a side sectional view of a third embodiment of the present invention.
【図７】本発明の第４の実施例の側面断面図である。FIG. 7 is a side sectional view of a fourth embodiment of the present invention.
【図８】本発明の第５の実施例の側面断面図である。FIG. 8 is a side sectional view of a fifth embodiment of the present invention.
１ 挿入部先端 ２ 送気管路 ３ 送水管路 ５ シリンダ ６ 操作弁 ９ 貫通孔 １２ 給気チューブ １３ 給水管路 １３ａ 給水チューブ １４ 閉塞部材 ２０ 連通孔 ２１ 連通溝 1 Tip of Insertion Part 2 Air Supply Pipeline 3 Water Supply Pipeline 5 Cylinder 6 Operation Valve 9 Through Hole 12 Air Supply Tube 13 Water Supply Pipeline 13a Water Supply Tube 14 Closing Member 20 Communication Hole 21 Communication Channel
Claims (1)
及び第２の２本の元側流体管路と内視鏡の挿入部先端に
開口する第１及び第２の２本の先側流体管路とが接続さ
れたシリンダ内でピストン状の操作弁を軸線方向に進退
操作することによって、上記第１の先側流体管路に対す
る上記第１の元側流体管路の接続状態と上記第２の先側
流体管路に対する上記第２の元側流体管路の接続状態と
が切り換わるようにした内視鏡の管路切換装置におい
て、 上記第１の元側流体管路を上記シリンダの底部に接続し
て上記第１の先側流体管路を上記シリンダの側壁面に接
続すると共に、上記第２の元側流体管路の接続開口と上
記第２の先側流体管路の接続開口とを上記シリンダの側
壁面の上記シリンダの軸線に垂直な略同一円周上に形成
し、 上記操作弁には、待機状態において上記シリンダの底部
と上記第１の先側流体管路とを連通させる第１の連通路
と、上記操作弁が上記シリンダ内に押し込み操作された
ときに上記第２の元側流体管路の接続開口と上記第２の
先側流体管路の接続開口とを連通させる第２の連通路
と、待機状態においては上記第２の元側流体管路の接続
開口の周囲と上記第２の先側流体管路の接続開口の周囲
とに密接し上記操作弁が上記シリンダ内に押し込み操作
されたときには上記第１の先側流体管路の接続開口の周
囲に密接する弾力性のある閉塞部材を設けたことを特徴
とする内視鏡の管路切換装置。1. A first device connected to an external device for driving a fluid.
And a piston-like operation valve in a cylinder in which the two source fluid lines of the second side and the first fluid line of the two front sides that open at the tip of the insertion portion of the endoscope are connected By moving back and forth in the axial direction, the connection state of the first source side fluid pipeline to the first front side fluid pipeline and the second source side fluid to the second front side fluid pipeline. In a conduit switching device for an endoscope adapted to switch a connection state of a conduit, the first source side fluid conduit is connected to a bottom portion of the cylinder to connect the first front side fluid conduit. While being connected to the side wall surface of the cylinder, the connection opening of the second source side fluid conduit and the connection opening of the second front side fluid conduit are perpendicular to the axis of the cylinder on the side wall surface of the cylinder. They are formed on substantially the same circumference, and the operation valve has the bottom portion of the cylinder and the first portion in the standby state. A first communication passage communicating with the front side fluid pipeline of the second side, and a connection opening of the second source side fluid pipeline and the second front side when the operation valve is pushed into the cylinder. A second communication passage communicating with the connection opening of the fluid pipeline, and around the connection opening of the second source fluid pipeline and the periphery of the connection opening of the second front fluid pipeline in the standby state. And an elastic closing member which is in close contact with and around the connection opening of the first front side fluid conduit when the operation valve is pushed into the cylinder. Mirror line switching device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12245895A JP3505001B2 (en) | 1995-05-22 | 1995-05-22 | Endoscope conduit switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12245895A JP3505001B2 (en) | 1995-05-22 | 1995-05-22 | Endoscope conduit switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08308792A true JPH08308792A (en) | 1996-11-26 |
| JP3505001B2 JP3505001B2 (en) | 2004-03-08 |
Family
ID=14836360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12245895A Expired - Fee Related JP3505001B2 (en) | 1995-05-22 | 1995-05-22 | Endoscope conduit switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3505001B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000000768A1 (en) * | 1998-06-29 | 2000-01-06 | Sugan Co., Ltd. | Channel switching apparatus |
| JP2004024561A (en) * | 2002-06-26 | 2004-01-29 | Pentax Corp | Air feeding and suction operating mechanism for endoscope |
-
1995
- 1995-05-22 JP JP12245895A patent/JP3505001B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000000768A1 (en) * | 1998-06-29 | 2000-01-06 | Sugan Co., Ltd. | Channel switching apparatus |
| US6530907B1 (en) | 1998-06-29 | 2003-03-11 | Sugan Co., Ltd. | Channel switching apparatus |
| CN1105850C (en) * | 1998-06-29 | 2003-04-16 | 斯冈株式会社 | Channel Switching apparatus |
| JP2004024561A (en) * | 2002-06-26 | 2004-01-29 | Pentax Corp | Air feeding and suction operating mechanism for endoscope |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3505001B2 (en) | 2004-03-08 |
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