JPH01212531A - Liquid ejector for endoscope - Google Patents
Liquid ejector for endoscopeInfo
- Publication number
- JPH01212531A JPH01212531A JP63037599A JP3759988A JPH01212531A JP H01212531 A JPH01212531 A JP H01212531A JP 63037599 A JP63037599 A JP 63037599A JP 3759988 A JP3759988 A JP 3759988A JP H01212531 A JPH01212531 A JP H01212531A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- air
- valve
- liquid
- injection liquid
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 128
- 238000004891 communication Methods 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 104
- 239000007924 injection Substances 0.000 claims description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 238000004140 cleaning Methods 0.000 claims description 28
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 210000002429 large intestine Anatomy 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
Description
［発明の利用分野］
本発明は、大腸鏡等の内視鏡における洗浄液等の液体を
噴射するための液体噴射機構に関するものである。
［従来の技術］
大腸鏡等により体腔内の観察を行う場合において、膣壁
等に汚物等が付着していると、それを洗い流さなければ
、病変部の有無等に対する正確な検査を行うことができ
ないことになる。また、この大腸以外の検査を行うに当
っても、ｙｌＡ部に血液等が付着していると、この血液
等を洗い流す必要がある。、かかる汚物等の洗い流しは
、洗浄液を噴射するごとにより行われるが、従来におい
ては、′一端部に注射筒等からなる洗浄液の圧送手段を
接続した長尺のチューブを用い、このチューブを処置具
挿通チャンネルに挿通して、圧送手段を作動させること
により、洗浄液の噴射を行うようにしていた。[Field of Application of the Invention] The present invention relates to a liquid ejection mechanism for ejecting liquid such as cleaning liquid in an endoscope such as a colonoscope. [Prior Art] When observing the inside of a body cavity using a colonoscope, etc., if dirt or other substances adhere to the vaginal wall, it is difficult to accurately examine the presence or absence of a lesion unless it is washed away. It turns out you can't do it. Furthermore, when performing tests on areas other than the large intestine, if blood or the like adheres to the ylA region, it is necessary to wash away the blood or the like. Washing away such filth, etc. is performed by spraying cleaning fluid every time, but conventionally, a long tube with a cleaning fluid pumping means such as a syringe connected to one end is used, and this tube is connected to a treatment instrument. The cleaning liquid was sprayed by inserting the cleaning liquid into the insertion channel and activating the pressure feeding means.
ところで、洗浄液の噴射機構を前述のように構成すると
、汚物の洗い流し作業を行うためには、チューブを処置
具挿通チャンネルに挿通させるという煩わしい操作を行
わなければならず、また、このチューブを挿通させた後
においても、圧送手段を作動させることを必要とし、内
視鏡の操作を行いながらこれらの作業を行うのは困難で
あり、非常に手間を要するという難点がある。また、圧
送手段としては、注射筒等のような容積の小さいもので
あるために、特に大腸内の汚物の洗い流し等を十分に行
うことができる程度に洗浄液の噴射を行うことができな
い等の欠点がある。
本発明は叙上の点に鑑みてなされたものであっ工、その
目的とするところは、簡単な操作によって必要な量の洗
浄液等の液体を容易に噴射させることができるようにし
た内視鏡の液体噴射機構を提供することにある。
１問題点を解決するための手段ｌ
前述した目的を達成するために、本発明は、挿入部の先
端に設けられ、観察対象部に向けて液体を噴射する噴射
口と、噴射液タンクに接続せれて、高圧の噴射液を送り
出すための圧力変換器との間の流路の途中に噴射液バル
ブを介装し、該噴射液バルブにエアポンプから送気送水
バルブに至るエア配管を接続し、前記噴射液バルブを前
記噴射口と圧力変換器との間が連通ずる状態に切り換え
たときに、前記エア配管におけるエアポンプと送気送水
バルブとの間の連通を遮断するようになし、このときに
おけるエア配管内の圧力を前記圧力変換器・の一次側圧
力室に導くことにより前記噴射口に供給する噴射液を圧
送する構成としたことをその特徴とするものである。By the way, when the cleaning liquid injection mechanism is configured as described above, in order to wash away dirt, it is necessary to perform the troublesome operation of inserting the tube into the treatment instrument insertion channel. Even after this, it is necessary to operate the pumping means, and it is difficult and time-consuming to perform these operations while operating the endoscope. In addition, since the pressure-feeding means has a small volume such as a syringe, it has disadvantages such as not being able to spray enough cleaning liquid to sufficiently wash away dirt in the large intestine. There is. The present invention has been made in view of the above-mentioned points, and its purpose is to provide an endoscope that can easily spray a necessary amount of liquid such as cleaning liquid by simple operation. The purpose of the present invention is to provide a liquid ejection mechanism. 1. Means for Solving Problems 1 In order to achieve the above-mentioned object, the present invention provides a jetting port that is provided at the tip of the insertion section and that jets liquid toward the observation target area, and a jetting port that is connected to a jetting liquid tank. Then, an injection liquid valve is interposed in the flow path between the pressure transducer for sending out the high-pressure injection liquid, and an air piping from the air pump to the air and water supply valve is connected to the injection liquid valve. When the injection liquid valve is switched to a state where the injection port and the pressure converter communicate with each other, communication between the air pump and the air/water supply valve in the air piping is cut off, and at this time, The present invention is characterized in that the injection liquid supplied to the injection port is fed under pressure by guiding the pressure within the air pipe to the primary side pressure chamber of the pressure converter.
【作用１
噴射液バルブは、常時においては、噴射液タンクに接続
した圧力変換器と噴射口との間の連通、を遮断し、エア
ポンプと送気送水バルブとを連通させた状態とする。こ
れにより、挿入部の先端に設けた観察窓が体液等が付着
した場合において、該送気送水バルブを操作することに
よって、それに洗浄用の流体を供給して、その洗浄を支
障なく行うことができる。
一方、この噴射液バルブを圧力変換器と噴射口との間を
連通させる状態に切り換えると、エアポンプと送気送水
バルブとの間の接続が遮断されることになる。従っ°Ｃ
１該エアポンプにｖＬ統した空気配管内の圧力が上昇す
る。この空気配管内の圧力は、圧力変換器の一次側圧力
室に導かれて、二次側の噴射液が増圧され、噴射液の流
路に圧送されて、噴射口から噴射させることができるよ
うになる。 、 、 、。
、このように、噴射液バルブを操作するだけで、洗浄液
の噴射を行わせる、ことができるようになるのマ、その
操作性が著しく自主する。しかも、この噴射液バルブを
、内視鏡の操作部において、送気送水バルブに隣接させ
て設けるようにすれば、内視鏡な把持する手の指で操作
を行うことができるよう−になるので、その操作性が極
めて良好となる。
を実施例、】
以下、本発明の実施例を図面に基づいて詳細に説明する
。
第１図乃至第３図は、本発明の第１の実施例を示すもの
であって、第１図において、１は内視鏡の操作部、２は
挿入部、３は光源装置、４は洗浄液タンク、５は噴射液
供給部をそれぞれ示す。
挿入部２の先端には、観察窓１０が設けられており、該
観察窓１０が汚損したときにおいて、その洗浄を行うた
めに、送気送水ノズル１１が設けられている。該送気送
水ノズル１１には送気送水管１２が接続されており、こ
の送気送水管１２は、挿入部２内における途中位置で送
気管１３と送水管１４とに分岐して、操作部１に設けら
れ、手指で操作可能な操作ボタン１５ａを有する送気送
水バルブ１５に接続されている。また、該送気送水バル
ブ１５には、光源装置３に内蔵したエアポンプ１６から
のエア配管１７と、洗浄液タンク４からの給水管１８と
が接続されており、さらにこの送気送水バルブ１５の操
作ボタン１５ａには大気開放部１９か設けられている。
なお、図中に３いて、２１は送気管１３の途中に介装し
た逆止弁である。
従って、常時には送水管１４と給水管１８との連通が遮
断されると共に、エア配管１７は大気開放部１９を介し
て大気と連通し、送気送水ノズル１１には送気も送水も
行われない送気送水停止状態となっているつそして、手
指で大気開放部１９を閉塞すると、エア配’１１７は大
気との連通が遮断されて、エアポンプ１５からの加圧空
気が送気管１３に供給されて、送気送水管１２を介して
送気送水ノズル１１から観察窓１０に向けて送り出され
る送気状態となる。
また、送気送水バルブ１５を押し込むと、エア配管１７
は大気開放部１９とも送気管１３とも遮断されると共に
、給水管１８が送水管１４と接続されるようになる。而
して、洗浄液タンク４には、エア配管１７から分岐した
タンク加圧配管２２が接続されており、エアポンプ１６
からの加圧空気はこのタンク加圧配管２２から洗浄液タ
ン−り４内に導かれて、該洗浄液タンク４の液面を加圧
することになって、給水管１８から送水管１４．送気送
水管１２を順次介して送気送水ノズル１１に送水を行う
送水状態に切り換わるように構成されている。従って、
内視鏡の操作中に観察窓ｌＯが汚れて、観察が困難にな
ったときには、送気送水バルブ１５を手指で操作するこ
とによって、送水して汚物等の洗い流しを行い、然る後
に送気することにより観察窓１０に付着する水滴の除去
を行うようにすればよい。
一方、観察対象部における膣壁に汚物等が付着している
と正確な検査を行うことができないことになるために、
この観察対象部に付着する汚物等を洗い流すための液体
噴射機構を備えている。この液体噴射機構としては、挿
入部２の先端に形成した噴射口３０を有し、該噴射口３
０から汚物に覆われた部分に向けての洗浄液の噴射を制
御するために、操作部１には送気送水バルブ１５に隣接
した位置に操作ボタン３１ａを有する噴射液バルブ３１
が設けられている。この噴射液バルブ３１には、噴射口
３０に通じる噴射液流出路３２と、噴射液タンク４から
の噴射液供給路３３とが接続され、該噴射液バルブ３１
によって噴射液流出路３２と噴射液供給路３３との間を
連通・遮断することができるようになっている。
また、噴射液バルブ３１には、エア配管１７が接続され
ており、該噴射液バルブ３１によって、エア配管１７は
エアポンプ１６に通じるポンプ側配管１７ａと送気送水
バルブ１５に通じるバルブ側配管１７ｂとに分けられて
いる。そして、該噴射液バルブ３】は、常時には噴射液
流出路３２と噴射液供給路３３との間の連通を遮断する
と共に、配管１７ａ 、 １７ｂ間が連通した復帰状態
に保持されており、操作ボタン３１ａを手指で押し込む
と、噴射液流出路３２と噴射液供給路３３とが連通し、
配管１７ａ 、 １７ｂ間の連通が遮断される作動状態
に切り換わるようになっている。
次に、噴射液供給部５の構成について説明する。この噴
射液供給部５は、噴射液供給タンク４０と、該噴射液供
給タンク４０から供給される噴射液を増圧するための圧
力変換器４１とを備えている。
該圧力変換器４１は、第２図に示したように、ケーシン
グ４１ａ内を一次側圧力室４２と、二次側圧力室４３と
に区画形成し、、これら両圧力室４２．４３はそれぞれ
ダイヤフラム等の可撓隔壁４４．４５と、この可撓隔壁
４４９．４５に連なる受圧部材４６．４７によって密閉
されており、受圧部材４６．４７間は連結杆４８により
連結されて、それらは相互に連動して移動せしめられる
ようになっている。而して、一次側圧力室４２の受圧部
材４６は、二次側圧力室４３の受圧部材４７より大きな
受圧面積を有し、この受圧面積比に応じて二次側圧力室
４３を増圧することができる構成となっている。また、
この圧“力変換器４１は、常時には噴射液が導入される
二次側圧力室４３が拡大した状態に保持されるようにな
っている。なお、この二次側圧力室４３を確実に拡大さ
せた状態に保持するためには、復帰ばねを受圧部材に作
用させるようにしておけばよい。
二次側圧力室４３には、噴射液供給タンク４０からの低
圧配管４９が接続されると共に、噴射液供給路３３が接
続されている。一方、一次側圧力室４２は空気圧が導入
されるようになっている。この空気圧はエアポンプ１６
から供給されるものを利用するようになっており、この
ために、タンク加圧配管２２がら空気配管５０が分岐せ
しめられ、該空気配管５０は方向切換弁５１に接続され
ている。そして、この方向切換弁５１は、空気配管５０
を一次側圧力室４３に通じる圧力導入管５２に接続する
状態と、この空気配管５０を噴射液供給タンク４０を加
圧するための加圧配管５３と連通させると共に、圧力導
入管５２を大気に開放する状態との間に切り換え可能と
なっている。
ここで、方向切換弁５１は常時には空気配管５０が加圧
配管５３と連通し、圧力導入管５２を大気に開放する状
態に保持されるようになっており、空気配管５０内が高
圧になると、空気配管５０を圧力導入管５２に接続し、
この圧力を一次側圧力室４２に導くことができるように
なっている。このように空気配管５０内の圧力に応じて
方向切換弁５１の切り換えを行うために、該空気配管５
０の途中には圧力検出器５４が設けられており、４の圧
力検出器５４により空気配管５０内が所定の圧力となっ
たことを検出したときに、その信号が弁コントロール部
５５に入力され、この弁コントロール部５５からの信号
に基づいて方向切換弁５１を切り換えることができるよ
うに構成されている。さらに、圧力導入管５２の途中に
は、レギュレータ５６が設けられており、該レギュレー
タ５６によって一次側圧力室４２に供給される空気圧が
一定となるように制御されることになる。
そして、このレギュレータ５６の設定圧は適宜変更調整
することができるようにな９ている。なお、図中におい
て、５７は配管４９の途中に設、けた逆と弁である。
本実施例は前述のように構成されるもので、次にその作
用について説明する。
内視鏡を操作して、患者の体内等を検査したり、治療を
行ったりするには、挿入部２を所定の挿入経路に沿って
挿入し、その先端部を観察対象部仲位置させて、その内
部に照明光を照射することによって、観察窓ｌＯを介し
て検査を行うことができる。また、処置具挿通チャンネ
ルを介して鉗子等の処置具を挿入部２内に挿入すれば、
患部の摘出そ、の他の給蒸等を行うことができる。なお
、このときにおいて、光！装置３内に設けたエアボビプ
１６は作動状態に保持しておくが、この操作部１に設け
た送気送水バルブ１５及び噴射液バルブ３１を第１図の
状態に保持しておけば、エアポンプＩＳは大気と連通し
て、無負荷状態で作動することになる。
而して、体腔における膣壁に病変部があるか否かを検査
するには、この膣壁を直接観察する必要がある。然るに
、大腸等のように、膣壁に汚物等が付着していたり、ま
た膣壁に出血部があったりすると、正確な検査を行うこ
とかできないことになるために、このような汚物等を洗
い流さなければならない。
そこで、操作部１に設けた噴射液バルブ３１の操作ボタ
ン３１ａを押し込むと、復帰状態からこの噴射液バルブ
３１に接続した噴射液流出路３２と噴射液流入路３３と
の間か連通ずると共に、エア配管１７におけるポンプ側
配管１７ａとバルブ側配管１７ｂと間の連通か遮断され
る状態に切り換わることになる。この結果、エアポンプ
１６は大気から遮断されるために、ポンプ側配管１７ａ
内の圧力が上昇することになり、該ポンプ側配管１７ａ
に連通ずる空気配管５０内の圧力も上昇する。この空気
配管５０には圧力検出器５４が設けられているので、該
空気配管５０内か所定め圧力となったときに、該圧力検
出器５４により検出されて、この検出信号が弁コントロ
ール部５５に入力される。
この結果、弁コントロール部５５からの信号に基づいて
、方向切換弁５１が空気配管５０を加圧配管５３と連通
ずる状態から圧力導入管５２と連通する状態に切り換わ
って、エアポンプ１６からの圧力かポンプ側配管１７ａ
、空気配管５０．方向切換弁５１から、レギュレータ５
６により一定圧力となるように調整された上で、圧力導
入管５２を介して圧力変換器４１の一次側圧力室４２に
導入されることになる。この圧力は受圧部材４６に作用
して、該受圧部材４６を一次側圧力室４２が拡大する方
向に押圧し、該受圧部材４６と連結杆４８を介して連結
されている二次側圧力室４３の受圧部材４７を、該二次
側圧力室４３が縮小する方向に変位させることになる。
この結果、受圧部材４６と受圧部材４７との受圧面積比
に応じて、二次側圧力室４３か増圧されて、該二次側圧
力室４３内の高圧噴射液か噴射液供給路３３から、噴射
液バルブ３１．噴射液供給路３３を順次介して噴射口３
０に圧送されて、該噴射口３０から噴出せしめられるこ
とになる。なお、このときに、エアポンプ１６からの圧
力はタンク加圧配管２２を介して洗浄液タンク４にも導
かれるが、送気送水バルブ１５の作用によって、送気送
水ノズル１１に送水されることはないことはいうまでも
ない。
前述した動作のタイミングは第３図に示した通りである
。
而して、この二次側圧力室４３における噴射液か排出さ
れると、洗浄液の噴射が停止されることになるが、噴射
液バルブ３１を復帰させると、方向切換弁５１が空気配
管５０を加圧配管５３と接続させると共に、圧力導入管
５２は大気と連通ずる状態に切り換わるので、噴射液供
給タンク４０が加圧されて、低圧配管４９から圧力変換
器４１における二次側圧力室４３内に噴射液が迅速に補
給されることになる。
従って、噴射液バルブ３１を繰り返し操作すれば、その
都度洗浄すべき箇所に向けて間欠的に洗浄液を高圧噴射
させることができるようになり、汚物等を完全に洗い流
すまで洗浄液の噴射を行わせることができるようになる
。
また、観察窓１０を洗浄するために、送気送水バルブ１
５を操作する場合には、噴射液バルブ３１を、ポンプ側
配管１７ａとバルブ側配管１７ｂとか連通し、かつ噴射
液流出路３２と噴射液供給路３３との連通を遮断した復
帰状態に保持して、該送気送水バルブ１５を操作すれば
よい。この送気送水バルブ１５を操作したときに、空気
配管５０内の圧力が上昇するが、この圧力上昇により方
向切換弁５１か切り換わっても、噴射液供給路３３と噴
射液流出路３２との間は遮断されているので、噴射液が
噴射口３０から流れ出すことはない。また、送気送水時
における空気配管５０の圧力より高い圧力状態となった
ときに、方向切換弁５１か切り換わるように設定してお
けば、送気送水時にみだりに方向切換弁５１か切り換わ
るのを防止することができるようになる。
次に、第４図に本考案の第２の実施例を示す。
同図において、第１図と同一または均等な構成要素につ
いては、同一の符号を付してその説明を省略するものと
する。
然るに、本実施例においては、前述した第１の実施例と
は異なり、噴射液供給部に方向切換弁は設けられておら
ず、空気配管５２は直接レギュレータ５６に接続されて
おり、該レギュレータ５６からの圧力導入管５２′が圧
力変換器６０に接続されるようになっている。この圧力
変換器６０は、その一次側圧力室６１と二次側圧力室６
２とにそれぞれ受圧面積の異なる受圧部６３ａ 、 ６
３ｂを有する段付ピストン６３が装着されており、この
段付ピストン６３に復帰ばね６４を作用させている。そ
して、一次側圧力室６１には圧力導入管５２’が接続さ
れ、また二次側圧力室６２には低圧配管４９及び噴射液
供給路３３が接続されており、これら低圧配管４９及び
噴射液供給路３３にはそれぞれ逆止弁６７、６８を介装
するように構成している。
なお、第１の実施例とは異なり、空気配管５０には圧力
検出器は設けられておらず、また噴射液タンク４０には
加圧配管は接続されていない。さらに、送水管１４には
補助送水管７０が逆止弁７１を介して接続されており、
この補助送水管７０を介して洗浄液タンク４から供給さ
れる洗浄液より高圧の液体を観察窓ｌＯに向けて供給す
ることができるようになっている。
前述のように構成すれば、噴射液バルブ３１を作動状態
に切り換えることによって、エアポンプ１６の圧力がレ
ギュレータ５６の設定圧にまで上昇すると、この圧力が
圧力導入管５２′を介して圧力変換器６０における一次
側圧力室６１内に導かれて、二次側圧力室６２内の噴射
液を増圧させて、噴射口３０に向けて圧送させることが
できるようになる。
一方、噴射液バルブ３１を復帰させると、圧力変換器６
０における一次側圧力室６１は大気と連通ずる状態とな
るので、復帰ばね６４の作用によって段付ピストン６３
が変位し、二次側圧力室６２が負圧となって、噴出液タ
ンク４０から噴出液が二次側圧力室６２に補給されるこ
とになる。
なお、前述の各実施例においては、洗浄液を噴射させる
機構として説明したが、例えば色素散布タンクを噴射液
供給路３３に接続すれば１色素散布機構として用いる等
、他の液体噴射機構としても用いることもできる。
【発明の効果ｌ
以上詳述したように、本発明によれば、内視鏡の操作部
に噴射液バルブを設け、該噴射液バルブに噴射液の流路
な接続すると共に、エアポンプから送気送水バルブｑ至
るエア配管を接続し、噴射液バルブが噴射液流路を噴射
液供給部と噴射口との間を連通させる状態に切り換わっ
たときに、エアポンプと送気送水バルブとの間の連通を
遮断させるようになし、このときにおけるエア配管内の
圧力を圧力変換器に導入することによって、噴射液を噴
射口に向けて圧送させるように構成したので、Ｑ射バル
ブを操作するだけの極めて簡単な操作により観察対象部
における洗浄すべき箇所等に、所望の圧力で、必要な量
だけの液体の噴射を行わせることができるようになる。[Operation 1] The injection liquid valve normally cuts off communication between the pressure transducer connected to the injection liquid tank and the injection port, and keeps the air pump and the air/water supply valve in communication. As a result, if the observation window provided at the tip of the insertion tube is contaminated with bodily fluids, cleaning fluid can be supplied to the observation window by operating the air/water supply valve, and the cleaning can be performed without any problem. can. On the other hand, when the injection liquid valve is switched to a state where the pressure converter and the injection port are communicated with each other, the connection between the air pump and the air/water supply valve is cut off. Follow °C
1. The pressure inside the air pipe connected to the air pump increases. The pressure in this air piping is guided to the primary side pressure chamber of the pressure converter, and the injection liquid on the secondary side is increased in pressure, and is forced into the injection liquid flow path and can be injected from the injection port. It becomes like this. , , ,. In this way, the cleaning liquid can be sprayed simply by operating the injection liquid valve, which greatly improves the operability. Moreover, if this injection liquid valve is installed adjacent to the air and water supply valve in the operation section of the endoscope, it becomes possible to operate the endoscope with the fingers of the hand holding it. Therefore, the operability is extremely good. Embodiments] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. 1 to 3 show a first embodiment of the present invention. In FIG. 1, 1 is an endoscope operating section, 2 is an insertion section, 3 is a light source device, and 4 is a A cleaning liquid tank and 5 indicate an injection liquid supply section, respectively. An observation window 10 is provided at the distal end of the insertion section 2, and an air/water supply nozzle 11 is provided to clean the observation window 10 when it becomes soiled. An air and water pipe 12 is connected to the air and water nozzle 11, and the air and water pipe 12 branches into an air pipe 13 and a water pipe 14 at an intermediate position within the insertion section 2, and connects to the operating section. 1, and is connected to an air/water supply valve 15 having an operation button 15a that can be operated with fingers. Further, an air pipe 17 from an air pump 16 built into the light source device 3 and a water supply pipe 18 from the cleaning liquid tank 4 are connected to the air/water supply valve 15, and the air/water supply valve 15 is operated. An atmosphere opening part 19 is provided in the button 15a. In the figure, numeral 3 and 21 indicate a check valve interposed in the middle of the air pipe 13. Therefore, under normal conditions, communication between the water supply pipe 14 and the water supply pipe 18 is cut off, and the air pipe 17 is communicated with the atmosphere through the atmosphere opening part 19, so that neither air nor water is supplied to the air/water supply nozzle 11. When the air and water supply is stopped and the atmosphere opening section 19 is closed with a finger, the communication between the air pipe 117 and the atmosphere is cut off, and the pressurized air from the air pump 15 is supplied to the air pipe 13. Then, air is sent out from the air/water nozzle 11 toward the observation window 10 via the air/water pipe 12. Also, when the air and water supply valve 15 is pushed in, the air pipe 17
is cut off from both the atmosphere opening section 19 and the air supply pipe 13, and the water supply pipe 18 is connected to the water supply pipe 14. A tank pressurizing pipe 22 branched from the air pipe 17 is connected to the cleaning liquid tank 4, and an air pump 16
The pressurized air from the tank pressurizing pipe 22 is led into the cleaning liquid tank 4 to pressurize the liquid level of the cleaning liquid tank 4, and is then transferred from the water supply pipe 18 to the water supply pipe 14. It is configured to switch to a water supply state in which water is supplied to the air and water nozzles 11 via the air and water pipes 12 in sequence. Therefore,
If the observation window 1O becomes dirty during operation of the endoscope and observation becomes difficult, operate the air and water supply valve 15 with your fingers to supply water to wash away dirt, and then restart the air supply. By doing so, water droplets adhering to the observation window 10 may be removed. On the other hand, if there is dirt attached to the vaginal wall in the area to be observed, it will not be possible to conduct an accurate examination.
It is equipped with a liquid injection mechanism for washing away dirt and the like adhering to this observation target area. This liquid ejection mechanism has an ejection port 30 formed at the tip of the insertion portion 2.
In order to control the injection of cleaning liquid from zero to the area covered with dirt, the operation unit 1 includes an injection liquid valve 31 having an operation button 31a located adjacent to the air and water supply valve 15.
is provided. The injection liquid valve 31 is connected to an injection liquid outflow path 32 leading to the injection port 30 and an injection liquid supply path 33 from the injection liquid tank 4.
This allows communication and isolation between the injection liquid outflow path 32 and the injection liquid supply path 33. Further, an air pipe 17 is connected to the injection liquid valve 31, and the air pipe 17 is connected to a pump-side pipe 17a leading to the air pump 16 and a valve-side pipe 17b leading to the air/water supply valve 15. It is divided into The injection liquid valve 3] normally shuts off communication between the injection liquid outflow path 32 and the injection liquid supply path 33, and is maintained in a restored state in which the pipes 17a and 17b are in communication. When the button 31a is pressed with a finger, the injection liquid outflow path 32 and the injection liquid supply path 33 are brought into communication.
The state is switched to an operating state in which communication between the pipes 17a and 17b is cut off. Next, the configuration of the injection liquid supply section 5 will be explained. The injection liquid supply section 5 includes an injection liquid supply tank 40 and a pressure converter 41 for increasing the pressure of the injection liquid supplied from the injection liquid supply tank 40. As shown in FIG. 2, the pressure transducer 41 has a casing 41a partitioned into a primary pressure chamber 42 and a secondary pressure chamber 43, each of which has a diaphragm. It is sealed by flexible partition walls 44.45 and pressure receiving members 46.47 connected to the flexible partition walls 449.45, and the pressure receiving members 46.47 are connected by a connecting rod 48, so that they interlock with each other. It is designed so that it can be moved. Thus, the pressure receiving member 46 of the primary pressure chamber 42 has a larger pressure receiving area than the pressure receiving member 47 of the secondary pressure chamber 43, and the pressure of the secondary pressure chamber 43 can be increased in accordance with this pressure receiving area ratio. It is configured to allow. Also,
This pressure transducer 41 is configured such that the secondary pressure chamber 43 into which the injection liquid is normally introduced is maintained in an expanded state. In order to maintain this state, a return spring may be made to act on the pressure receiving member.A low pressure pipe 49 from the injection liquid supply tank 40 is connected to the secondary side pressure chamber 43, and The injection liquid supply path 33 is connected to it.On the other hand, air pressure is introduced into the primary side pressure chamber 42.This air pressure is supplied to the air pump 16.
For this purpose, an air pipe 50 is branched from the tank pressurizing pipe 22, and the air pipe 50 is connected to a directional control valve 51. This directional control valve 51 is connected to the air pipe 50.
is connected to the pressure introduction pipe 52 that communicates with the primary side pressure chamber 43, and this air pipe 50 is connected to the pressurization pipe 53 for pressurizing the injection liquid supply tank 40, and the pressure introduction pipe 52 is opened to the atmosphere. It is possible to switch between the two states. Here, the directional switching valve 51 is normally maintained in a state where the air pipe 50 communicates with the pressurizing pipe 53 and the pressure introduction pipe 52 is opened to the atmosphere, and when the inside of the air pipe 50 becomes high pressure. , connect the air pipe 50 to the pressure introduction pipe 52,
This pressure can be guided to the primary pressure chamber 42. In order to switch the directional control valve 51 according to the pressure inside the air pipe 50, the air pipe 50 is
A pressure detector 54 is provided in the middle of the air pipe 50, and when the pressure sensor 54 detects that a predetermined pressure has been reached in the air pipe 50, the signal is input to the valve control unit 55. The directional control valve 51 is configured to be able to be switched based on a signal from the valve control section 55. Further, a regulator 56 is provided in the middle of the pressure introduction pipe 52, and the regulator 56 controls the air pressure supplied to the primary pressure chamber 42 to be constant. The set pressure of this regulator 56 can be changed and adjusted as appropriate9. In addition, in the figure, 57 is a girder and a valve provided in the middle of the pipe 49. This embodiment is constructed as described above, and its operation will be explained next. To operate the endoscope to examine the inside of a patient's body or perform treatment, insert the insertion section 2 along a predetermined insertion path, and position the distal end between the parts to be observed. By irradiating the interior with illumination light, inspection can be performed through the observation window IO. In addition, if a treatment instrument such as forceps is inserted into the insertion section 2 through the treatment instrument insertion channel,
It is possible to remove the affected area and provide other steam supply. In addition, at this time, light! The air pump 16 provided in the device 3 is kept in an operating state, but if the air/water supply valve 15 and the injection liquid valve 31 provided in the operating section 1 are kept in the state shown in Fig. 1, the air pump IS will be in communication with the atmosphere and will operate under no-load conditions. Therefore, in order to examine whether or not there is a lesion on the vaginal wall in the body cavity, it is necessary to directly observe the vaginal wall. However, if there is filth, etc. attached to the vaginal wall, such as the large intestine, or if there is bleeding on the vaginal wall, it will be impossible to conduct an accurate examination. Must be washed away. Therefore, when the operation button 31a of the injection liquid valve 31 provided on the operation part 1 is pushed in, communication is established between the injection liquid outflow path 32 and the injection liquid inflow path 33 connected to the injection liquid valve 31 from the returned state, and Communication between the pump-side pipe 17a and the valve-side pipe 17b in the air pipe 17 is switched to a state where it is cut off. As a result, the air pump 16 is isolated from the atmosphere, so the pump side piping 17a
This causes the pressure inside the pump side pipe 17a to rise.
The pressure within the air pipe 50 communicating with the air also increases. Since the air piping 50 is provided with a pressure detector 54, when the pressure within the air piping 50 reaches a predetermined pressure, the pressure detector 54 detects the pressure, and this detection signal is sent to the valve control section 55. is input. As a result, based on the signal from the valve control unit 55, the directional control valve 51 switches from communicating the air pipe 50 with the pressurizing pipe 53 to communicating with the pressure introduction pipe 52, thereby increasing the pressure from the air pump 16. Or pump side piping 17a
, air piping 50. From the directional control valve 51 to the regulator 5
6, the pressure is adjusted to a constant pressure, and then introduced into the primary pressure chamber 42 of the pressure transducer 41 via the pressure introduction pipe 52. This pressure acts on the pressure receiving member 46 and presses the pressure receiving member 46 in the direction in which the primary side pressure chamber 42 expands, and the secondary side pressure chamber 43 is connected to the pressure receiving member 46 via the connecting rod 48. The pressure receiving member 47 is displaced in the direction in which the secondary pressure chamber 43 is reduced. As a result, the pressure in the secondary side pressure chamber 43 is increased according to the pressure receiving area ratio of the pressure receiving member 46 and the pressure receiving member 47, and the high pressure injection liquid in the secondary side pressure chamber 43 is transferred from the injection liquid supply path 33. , injection liquid valve 31. The injection port 3 sequentially passes through the injection liquid supply path 33.
0 and is ejected from the injection port 30. Note that at this time, the pressure from the air pump 16 is also guided to the cleaning liquid tank 4 via the tank pressure piping 22, but due to the action of the air and water supply valve 15, water is not sent to the air and water supply nozzle 11. Needless to say. The timing of the above-mentioned operation is as shown in FIG. When the injection liquid in the secondary pressure chamber 43 is discharged, the injection of the cleaning liquid is stopped, but when the injection liquid valve 31 is reset, the directional control valve 51 closes the air pipe 50. Since the pressure introduction pipe 52 is connected to the pressure pipe 53 and switched to a state where it communicates with the atmosphere, the injection liquid supply tank 40 is pressurized, and the secondary pressure chamber 43 in the pressure converter 41 is connected from the low pressure pipe 49. The injection liquid will be quickly replenished within the tank. Therefore, by repeatedly operating the injection liquid valve 31, it is possible to intermittently inject the cleaning liquid at high pressure toward the area to be cleaned each time, and the cleaning liquid can be sprayed until the dirt, etc. is completely washed away. You will be able to do this. In addition, in order to clean the observation window 10, the air and water supply valve 1
5, the injection liquid valve 31 is maintained in a restored state in which the pump side piping 17a and the valve side piping 17b are communicated with each other, and the injection liquid outflow path 32 and the injection liquid supply path 33 are disconnected from each other. Then, the air/water supply valve 15 may be operated. When this air and water supply valve 15 is operated, the pressure inside the air pipe 50 increases, but even if the directional control valve 51 is switched due to this pressure increase, the injection liquid supply path 33 and the injection liquid outflow path 32 are connected to each other. Since the gap is blocked, the injection liquid will not flow out from the injection port 30. Furthermore, if the directional control valve 51 is set to switch when the pressure in the air piping 50 becomes higher than the pressure in the air piping 50 during air and water supply, the directional control valve 51 will not be switched inadvertently during air and water supply. It will be possible to prevent this. Next, FIG. 4 shows a second embodiment of the present invention. In this figure, the same or equivalent components as in FIG. 1 are given the same reference numerals, and the explanation thereof will be omitted. However, in this embodiment, unlike the first embodiment described above, the injection liquid supply section is not provided with a directional control valve, and the air pipe 52 is directly connected to the regulator 56. A pressure inlet pipe 52' from the pressure transducer 60 is connected to the pressure transducer 60. This pressure transducer 60 has a primary pressure chamber 61 and a secondary pressure chamber 6.
2 and pressure receiving parts 63a and 6 having different pressure receiving areas, respectively.
A stepped piston 63 having a diameter of 3b is mounted, and a return spring 64 acts on this stepped piston 63. A pressure introduction pipe 52' is connected to the primary pressure chamber 61, and a low pressure pipe 49 and an injection liquid supply path 33 are connected to the secondary pressure chamber 62. The passages 33 are each provided with check valves 67 and 68. Note that, unlike the first embodiment, the air pipe 50 is not provided with a pressure detector, and the injection liquid tank 40 is not connected to a pressurizing pipe. Further, an auxiliary water pipe 70 is connected to the water pipe 14 via a check valve 71,
A higher pressure liquid than the cleaning liquid supplied from the cleaning liquid tank 4 can be supplied to the observation window 10 through this auxiliary water pipe 70. With the configuration described above, when the pressure of the air pump 16 rises to the set pressure of the regulator 56 by switching the injection liquid valve 31 to the operating state, this pressure is transferred to the pressure converter 60 via the pressure introduction pipe 52'. The injection liquid is guided into the primary pressure chamber 61 in the secondary pressure chamber 62 and can be pressure-increased and force-fed toward the injection port 30. On the other hand, when the injection liquid valve 31 is reset, the pressure transducer 6
Since the primary pressure chamber 61 at 0 is in communication with the atmosphere, the stepped piston 63 is moved by the action of the return spring 64.
is displaced, the secondary pressure chamber 62 becomes a negative pressure, and the secondary pressure chamber 62 is replenished with the ejected liquid from the ejected liquid tank 40. In each of the above-mentioned embodiments, the mechanism was described as a mechanism for spraying the cleaning liquid, but it can also be used as a single pigment spraying mechanism by connecting a dye dispersion tank to the spray liquid supply path 33, or for other liquid spray mechanisms. You can also do that. Effects of the Invention 1 As described in detail above, according to the present invention, the injection liquid valve is provided in the operating section of the endoscope, the injection liquid flow path is connected to the injection liquid valve, and air is supplied from the air pump. When the air piping leading to the water supply valve q is connected and the injection liquid valve is switched to the state where the injection liquid flow path communicates between the injection liquid supply part and the injection port, the air piping between the air pump and the air and water supply valve is The communication is cut off, and the pressure inside the air piping at this time is introduced into the pressure transducer to force the injection liquid toward the injection port, so all you have to do is operate the Q injection valve. With an extremely simple operation, it becomes possible to spray the required amount of liquid at the desired pressure onto the area to be cleaned in the observation target area.
第１図乃至第３図は本発明の第１の実施例を示し、第１
図は内１！Ｌ鏡９鏡体流供給システムを示す説明図、第
２図は圧力変換器の構成説明図、第３図は洗浄液噴射機
構の動作タイミング図、第４図は本発明の第２の実施例
を示す内視鏡の流体供給システムの説明図である。
１：操作部、２：挿入部、４；洗浄液タンク、５：：噴
射液供給部、１０：観察窓、１１：送気送水ノズル、１
２：送気送水管、１３：送気管、１４：送水管、１５：
送気送水バルブ、１６：−エアポンプ、１７；エア配管
、１７ａ：ポンプ側配管、１７ｂ ：バルブ側配管、３
０：噴射９．３１：噴射液バルブ、３２：噴射液流出路
、３３：噴射液供給路、４０：噴射液供給タンク、４１
．６０：圧力変換器、４１．６１ニ一次側圧力室、４２
、６２：二次側圧力室、 ４４．４５：可撓隔壁、４δ
。
４７：受圧部材、４９：低圧配管、５０：空気配管、５
に方向切換弁、５２．５２’ ：圧力導入管、５３：
加圧配管、５４：圧力検出器、５５：弁コントロール部
、５６：レギュレータ、６３：段付ピストン、６４：復
帰ばね。1 to 3 show a first embodiment of the present invention.
The figure is 1 inside! An explanatory diagram showing the L mirror 9 mirror body flow supply system, Fig. 2 is an explanatory diagram of the configuration of the pressure transducer, Fig. 3 is an operation timing diagram of the cleaning liquid injection mechanism, and Fig. 4 is a diagram showing the second embodiment of the present invention. FIG. 2 is an explanatory diagram of the fluid supply system of the endoscope shown in FIG. 1: Operation section, 2: Insertion section, 4: Cleaning liquid tank, 5: Jetting liquid supply section, 10: Observation window, 11: Air and water supply nozzle, 1
2: Air and water pipe, 13: Air pipe, 14: Water pipe, 15:
Air and water supply valve, 16: - Air pump, 17; Air piping, 17a: Pump side piping, 17b: Valve side piping, 3
0: Injection 9.31: Injection liquid valve, 32: Injection liquid outflow path, 33: Injection liquid supply path, 40: Injection liquid supply tank, 41
．． 60: Pressure transducer, 41.61 Primary side pressure chamber, 42
, 62: Secondary pressure chamber, 44.45: Flexible partition, 4δ
. 47: Pressure receiving member, 49: Low pressure piping, 50: Air piping, 5
Directional switching valve, 52. 52': Pressure introduction pipe, 53:
Pressure piping, 54: pressure detector, 55: valve control section, 56: regulator, 63: stepped piston, 64: return spring.
Claims (2)
体を噴射する噴射口と、噴射液タンクに接続されて、高
圧の噴射液を送り出す圧力変換器との間の流路の途中に
噴射液バルブを介装し、該噴射液バルブにエアポンプか
ら送気送水バルブに至るエア配管を接続し、前記噴射液
バルブを前記噴射口と圧力変換器との間が連通する状態
に切り換えたときに、前記エア配管におけるエアポンプ
と送気送水バルブとの間の連通を遮断するようになし、
このときにおけるエア配管内の圧力を前記圧力変換器の
一次側圧力室に導くことにより前記噴射口に供給する噴
射液を圧送する構成としたことを特徴とする内視鏡の洗
浄液噴射機構。(1) In the middle of the flow path between the injection port, which is provided at the tip of the insertion section and injects liquid toward the observation target, and the pressure transducer, which is connected to the injection liquid tank and sends out high-pressure injection liquid. An injection liquid valve was interposed in the injection liquid valve, an air pipe from an air pump to an air supply and water supply valve was connected to the injection liquid valve, and the injection liquid valve was switched to a state where the injection port and the pressure converter communicated with each other. when the communication between the air pump and the air/water supply valve in the air piping is cut off;
A cleaning liquid injection mechanism for an endoscope, characterized in that the pressure in the air piping at this time is guided to the primary side pressure chamber of the pressure converter to forcefully feed the injection liquid to be supplied to the injection port.
と、前記圧力変換器の一次側圧力室に接続する状態と間
に切り換える方向切換弁に接続し、圧力検出手段によっ
て前記エア配管内の圧力が上昇したことを検出したとき
に、該エア配管を前記一次側圧力室と接続する状態に切
り換えるように構成したことを特徴とする請求項（１）
の内視鏡の洗浄液噴射機構。(2) Connecting the air piping to a directional control valve that switches between connecting the air piping to the injection liquid tank and connecting it to the primary pressure chamber of the pressure converter, and detecting the pressure inside the air piping by pressure detection means. Claim (1) characterized in that the air piping is configured to be connected to the primary pressure chamber when it is detected that the pressure has increased.
Cleaning fluid injection mechanism for endoscopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63037599A JP2611306B2 (en) | 1988-02-22 | 1988-02-22 | Endoscope liquid ejection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63037599A JP2611306B2 (en) | 1988-02-22 | 1988-02-22 | Endoscope liquid ejection mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01212531A true JPH01212531A (en) | 1989-08-25 |
| JP2611306B2 JP2611306B2 (en) | 1997-05-21 |
Family
ID=12502036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63037599A Expired - Fee Related JP2611306B2 (en) | 1988-02-22 | 1988-02-22 | Endoscope liquid ejection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2611306B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5928940A (en) * | 1982-08-09 | 1984-02-15 | 旭光学工業株式会社 | Water sending apparatus of endoscope |
| JPS62132001A (en) * | 1985-12-03 | 1987-06-15 | Diesel Kiki Co Ltd | High pressure generator |
| JPS62108601U (en) * | 1985-12-26 | 1987-07-11 |
-
1988
- 1988-02-22 JP JP63037599A patent/JP2611306B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5928940A (en) * | 1982-08-09 | 1984-02-15 | 旭光学工業株式会社 | Water sending apparatus of endoscope |
| JPS62132001A (en) * | 1985-12-03 | 1987-06-15 | Diesel Kiki Co Ltd | High pressure generator |
| JPS62108601U (en) * | 1985-12-26 | 1987-07-11 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2611306B2 (en) | 1997-05-21 |
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