JPS6320531B2 - - Google Patents
Info
- Publication number
- JPS6320531B2 JPS6320531B2 JP55046107A JP4610780A JPS6320531B2 JP S6320531 B2 JPS6320531 B2 JP S6320531B2 JP 55046107 A JP55046107 A JP 55046107A JP 4610780 A JP4610780 A JP 4610780A JP S6320531 B2 JPS6320531 B2 JP S6320531B2
- Authority
- JP
- Japan
- Prior art keywords
- air supply
- valve body
- air
- valve
- fluid
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 30
- 238000009423 ventilation Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Description
【発明の詳細な説明】
本発明は内視鏡の流体切換え装置の改良に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in fluid switching devices for endoscopes.
一般に、内視鏡にはその先端部にノズルを設
け、このノズルから空気や水を噴出して体腔内を
膨らませたり、あるいは対物レンズの表面を洗浄
したりするために送気送水を行なう装置が組み込
まれている。この装置は内視鏡本体内に送気路を
送水路を設け、これらを先端部内の１本の通路に
連結するとともに、この通路を介して上記ノズル
に連通してなり、さらに、送気路と送水路の途中
に送気送水の切換え弁装置を設けるものである。
そして、この送気送水の切換え弁装置は内視鏡の
操作部に内臓され、これを操作することによつて
送気および送水を切換え制御するようになつてい
る。また、送気路の途中には逆止弁が介挿されて
おり、先端側からの空気や水などの逆流を防止す
るようになつている。 Generally, an endoscope has a nozzle at its tip, and a device that blows out air or water from the nozzle to inflate the inside of the body cavity or to clean the surface of the objective lens. It has been incorporated. This device has an air supply path provided in the endoscope body, which is connected to one passage in the distal end, and communicates with the nozzle through this passage. An air/water switching valve device is installed in the middle of the water supply channel.
This air/water supply switching valve device is built into the operating section of the endoscope, and by operating the valve device, air supply and water supply are switched and controlled. Further, a check valve is inserted in the middle of the air supply path to prevent backflow of air, water, etc. from the tip side.
ところで、上記逆止弁は使用に伴つてその逆止
弁体が弁口部に固着してしまうことがあつた。こ
の逆止弁体の固着が起ると送気が不可能になる。
また、この固着は送気圧力を増した程度では解除
できない場合が多く、このため従来は逆止弁体の
固着が生じた場合には内止鏡の操作部をわざわざ
分解して修理しなければならず、きわめて面倒で
あつた。 However, as the check valve is used, the check valve body sometimes becomes stuck to the valve opening. If this check valve body becomes stuck, air cannot be supplied.
In addition, this sticking cannot often be released by increasing the air supply pressure.For this reason, in the past, when the check valve body became stuck, the operation part of the endoscope had to be disassembled and repaired. It was extremely troublesome.
本発明は上記事情に着目してなされたもので、
その目的とするところは逆止弁体の固着を弁操作
によつて簡単に解除できる内視鏡の流体切換え装
置を提供することにある。 The present invention has been made focusing on the above circumstances,
The object is to provide a fluid switching device for an endoscope that can easily release the fixation of a check valve element by operating the valve.
以下、本発明の一実施例を図面にもとづいて説
明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図中１は内視鏡本体を示し、これは操作部
２に可撓性の挿入部３を連結してなり、さらに操
作部２にはライトガイドケーブル４が連結されて
いる。また、内視鏡先端部５にはノズル６が設け
られている。また、内視鏡本体１内には送気路７
および送水路８が設けられており、この送気路７
および送水路８の先端側は上記ノズル６に連結さ
れている。そして、送気路７の基端側はライトガ
イドケーブル４内を通じて図示しない空気供給装
置に接続され、また送水路８の基端側は同じくラ
イトガイドケーブル４内を通じて図示しない水供
給装置に接続されるようになつている。 Reference numeral 1 in FIG. 1 indicates an endoscope main body, which is made up of an operating section 2 connected to a flexible insertion section 3, and further connected to the operating section 2 with a light guide cable 4. Further, a nozzle 6 is provided at the endoscope tip 5. In addition, an air supply path 7 is provided within the endoscope body 1.
and an air supply channel 8 are provided, and this air supply channel 7
The tip side of the water supply channel 8 is connected to the nozzle 6. The base end of the air supply channel 7 is connected to an air supply device (not shown) through the light guide cable 4, and the base end of the air supply channel 8 is connected to a water supply device (not shown) through the light guide cable 4. It is becoming more and more like this.
さらに上記操作部１には送気路７と送水路８の
途中に介挿し、送気送水の切り換えを行なう切換
え弁装置９が設けられている。そして、この切換
え弁装置９は第２図で示すように構成されてい
る。すなわち、第２図中１０は底部を閉塞した円
筒状の装置本体であり、その装置本体１０の周壁
には空気流入口１１とこれより上方に位置して水
流入口１２がそれぞれ設けられている。そして、
上記空気流入口１１は空気供給装置側の送気路７
に連通接続され、上記水流入口１２は水供給装置
側の送水路８に連通接続されている。上記装置本
体１０の底部には空気流出口１３が設けられ、ま
た上記空気流入口１１および水流入口１２より上
方に位置する装置本体１０の周壁部分には水流出
口１４が設けられている。そして、空気流出口１
３はノズル６側の送気路７に連通接続され、水流
出口１４はノズル６側の送水路８に連通接続され
ている。 Further, the operating section 1 is provided with a switching valve device 9 inserted between the air supply path 7 and the water supply channel 8 to switch between air and water supply. This switching valve device 9 is constructed as shown in FIG. That is, 10 in FIG. 2 is a cylindrical apparatus main body with a closed bottom, and an air inlet 11 and a water inlet 12 are provided in the peripheral wall of the apparatus main body 10, respectively. and,
The air inlet 11 is the air supply path 7 on the air supply device side.
The water inlet 12 is connected to the water supply channel 8 on the water supply device side. An air outlet 13 is provided at the bottom of the device body 10, and a water outlet 14 is provided in the peripheral wall portion of the device body 10 located above the air inlet 11 and water inlet 12. And air outlet 1
3 is connected in communication with the air supply path 7 on the nozzle 6 side, and the water outlet 14 is connected in communication with the water supply path 8 on the nozzle 6 side.
上記装置本体１０の内部には中央に空気放出孔
１５を形成してなる弁体１６が摺動自在に嵌挿さ
れており、この弁体１６の上端部は操作部２の外
面から突き出すように設けられている。さらに、
弁体１６の中間部における外周面には上下に離間
して環状に一対の連通溝１７，１８が形成されて
いる。またこの連通溝１７，１８の上下および中
間の外周面にはそれぞれシール材１９…が設けら
れていて、装置本体１０と弁体１６との間の気密
および液密を維持しながら弁体１６を摺動させ得
るようになつている。上記下側の連通溝１８の内
壁部分には空気放出孔１５と連通する通気孔２０
が設けられている。 A valve body 16 having an air discharge hole 15 formed in the center is slidably fitted inside the device main body 10, and the upper end of the valve body 16 protrudes from the outer surface of the operating section 2. It is provided. moreover,
A pair of annular communication grooves 17 and 18 are formed on the outer peripheral surface of the intermediate portion of the valve body 16, spaced apart from each other in the vertical direction. In addition, sealing materials 19 are provided on the upper, lower, and middle outer circumferential surfaces of the communication grooves 17 and 18, respectively, so that the valve body 16 can be sealed while maintaining airtightness and liquid tightness between the device main body 10 and the valve body 16. It is designed so that it can be slid. A ventilation hole 20 communicating with the air release hole 15 is provided in the inner wall portion of the lower communication groove 18.
is provided.
上記弁体１６の内端には上記ノズル６側からの
空気の逆流を防止する逆止弁２１が設けられてい
る。すなわち、この逆止弁２１は空気放出孔１５
の開口部からなる弁口２２にノズル６側から着座
する逆止弁体２３を設けてなり、その弁本体２４
は弁体１６の内端部にねじ止め固定されている。
さらに、弁本体２４にはその逆上弁体２３を介し
て空気放出孔１５に連通する通気孔２５が形成さ
れている。 A check valve 21 is provided at the inner end of the valve body 16 to prevent backflow of air from the nozzle 6 side. That is, this check valve 21 is connected to the air release hole 15.
A check valve body 23 is provided at the valve port 22 consisting of an opening from the nozzle 6 side, and the valve body 24
is fixed to the inner end of the valve body 16 with screws.
Further, a vent hole 25 is formed in the valve body 24 and communicates with the air discharge hole 15 via the reverse valve body 23.
また、上記弁体１６の空気放出孔１５には管状
の弁押し捧２６が摺動自在に嵌挿されていて、後
述する送気釦２７によつて弁押し捧２６を押し込
み逆止弁２１の逆止弁体２３を開放することがで
きるようになつている。なお、上記弁押し捧２６
の先端部における弁体１６の通気孔２０に対向す
る部分は切欠されていて、その弁押し捧２６によ
つて通気孔２０を閉塞しないようになつている。 A tubular valve pusher 26 is slidably fitted into the air release hole 15 of the valve body 16, and the check valve 21 is opened by pushing the valve pusher 26 in with an air supply button 27, which will be described later. The check valve body 23 can be opened. In addition, the above-mentioned valve pushpiece 26
A portion of the valve body 16 facing the vent hole 20 at the distal end thereof is cut out, so that the vent hole 20 is not blocked by the valve pushbutton 26 .
一方、上記送気釦２７は弁体１６の外端部に受
け座２８を取付け固定するとともに、弁押し捧２
６の突出外端に指当て部材２９を取り付けてな
り、その受け座２８と指当て部材２９の間にはス
プリング３０が介挿されていて、指当て部材２９
を介して弁押し捧２６を外方に突出するように弾
性的に付勢している、なお、通常は受け座２８の
下面に段部３１が当り位置決め待機している。そ
して、送気釦２７の指当て部材２９に指を当て弁
押し捧２６を押し込むと、下りその先端で逆止弁
２１の弁体２３を開くようになつている。 On the other hand, the air supply button 27 has a receiving seat 28 attached and fixed to the outer end of the valve body 16, and a valve pushbutton 28.
A finger rest member 29 is attached to the protruding outer end of the finger rest 6, and a spring 30 is inserted between the receiving seat 28 and the finger rest member 29.
The valve pushbutton 26 is elastically urged to protrude outward through the valve seat 28. Normally, the stepped portion 31 is in contact with the lower surface of the receiving seat 28 and is on standby for positioning. When the valve pusher 26 is pushed in by placing a finger on the finger rest 29 of the air supply button 27, the valve element 23 of the check valve 21 is opened at the tip of the downward movement.
また、受け座２８の上面には環状にシール部材
３２が設けられていて、指当て部材２９を押し下
げたときこの指当て部材２９が当り、その間を密
閉するようになつている。 Further, a sealing member 32 is provided in an annular shape on the upper surface of the receiving seat 28, and when the finger resting member 29 is pushed down, this finger resting member 29 comes into contact to seal the space between them.
一方、上記装置本体１０は第２図で示すように
固定用ビス３３…によつて操作部２の壁体３４に
取付け固定されており、さらに弁体１６はその装
置本体１０に螺合する抜止めリング３５によつて
抜け出ないようになつている。つまり、抜止めリ
ング３５は装置本体１０に対し外部から着脱でき
るように装着されており、この抜止めリング３５
を取り外すと、弁体１６も外部に直接に引き出し
て取り外せるようになつている。また、抜止めリ
ング３５と受け座２８の下面との間にはスプリン
グ３６が介挿されていて、弁体１６を外方に突出
するように弾性的に付勢するようになつている。
なお、通常は弁体１６の段部３７が抜止めリング
３５の下面に当り位置決め待機している。 On the other hand, as shown in FIG. 2, the device main body 10 is attached and fixed to the wall 34 of the operating section 2 by fixing screws 33, and the valve body 16 is screwed into the device main body 10. A retaining ring 35 prevents it from falling out. In other words, the retaining ring 35 is attached to the main body 10 of the device so that it can be attached to and removed from the outside.
When the valve body 16 is removed, the valve body 16 can also be directly pulled out and removed. Further, a spring 36 is interposed between the retaining ring 35 and the lower surface of the receiving seat 28, so as to elastically urge the valve body 16 to protrude outward.
Note that normally, the stepped portion 37 of the valve body 16 is in position and on standby in contact with the lower surface of the retaining ring 35.
しかして、通常は第２図で示すように弁体１６
および弁押し捧２６は上昇した位置にあり、空気
流入口１１に下側の連通溝１８が対向位置してい
る。このため、空気流入口１１は通気孔２５を介
して空気放出孔１５に連通している。また、水流
入口１２は弁体１６によつて閉塞されている。し
たがつて、送気路７を通じて空気供給装置から送
られてくる空気は空気流入口１１から通気孔２５
および空気流入口１１を介して外部に放出され
る。なお、ノズル６側の送気路７における流路抵
抗は空気放出孔１５に比べて非常に大きいので、
ノズル６側には流れない。一方、ノズル６側に送
気する場合には図面で示すように送気釦２７の指
当て部材２９に指を当てこの空気放出孔１５の開
口を塞ぐ。このため空気は逆止弁２１の逆止弁体
２３を押し開いて通気孔２５を通じて装置本体１
０の底部空間に入り、空気流出口１３からノズル
６側の送気路７に送られる。つまり、ノズル６側
に送気することができる。また、逆止弁体２３が
弁口２２に固着した場合は、送気釦２７を押し込
めば、弁押し捧２６が弁体１６に対して押し下げ
られ、この弁押し捧２６が逆止弁体２３を強制的
に開かせるので、固着状態を解除することができ
る。 Therefore, normally the valve body 16 as shown in FIG.
The valve pushbutton 26 is in a raised position, and the lower communication groove 18 is positioned opposite to the air inlet 11. Therefore, the air inlet 11 communicates with the air discharge hole 15 via the ventilation hole 25. Further, the water inlet 12 is closed by a valve body 16. Therefore, the air sent from the air supply device through the air supply path 7 flows from the air inlet 11 to the ventilation hole 25.
and is discharged to the outside through the air inlet 11. Note that since the flow path resistance in the air supply path 7 on the nozzle 6 side is much larger than that in the air discharge hole 15,
It does not flow to the nozzle 6 side. On the other hand, when air is to be supplied to the nozzle 6 side, the opening of the air discharge hole 15 is closed by placing a finger on the finger pad 29 of the air supply button 27 as shown in the drawing. Therefore, the air pushes open the check valve body 23 of the check valve 21 and passes through the ventilation hole 25 to the device body 1.
The air enters the bottom space of 0 and is sent from the air outlet 13 to the air supply path 7 on the nozzle 6 side. In other words, air can be supplied to the nozzle 6 side. In addition, if the check valve body 23 is stuck to the valve port 22, pressing the air supply button 27 will push the valve pushbutton 26 down against the valve body 16, and the valve pushbutton 26 will be attached to the check valve body 22. Since it is forced to open, the stuck state can be released.
次に、送水を行なう場合には送気釦２７をその
指でさらに強く押し込む。このとき、スプリング
３０はスプリング３６より弾性力が弱いため、送
気釦２７が先に押し下げられるとともに、弁押し
捧２６によつて逆止弁体２３を強制的に開かせ
る。したがつて、逆止弁体２３に固着が生じてい
てもその固着状態を解除できる。さらに、指当て
部材２９の下面がシール部材３２に当り、その間
を閉塞する。また、弁体１６が押し下げられ、下
側の連通溝１８は空気流入口１１から外れ、その
連通溝１８は閉塞されるとともに、上側の連通溝
１７は水流入口１２および水流出口１４にわたつ
て対向位置する。したがつて、送気が遮断される
とともに、水流入口１２からその上側の連通溝１
７には水供給装置側から水が流入し、水流出口１
４からノズル６側の送水路８に流れる。つまり送
水を行なうことができる。なお、この送水状態に
おいて逆止弁２１は開放されているが、空気放出
孔１５の開口部は指で塞がれ、かつ受け座２８と
指当て部材２９の間はシール部材３２によつて密
閉されているので、ノズル６側において送気路７
と送水路８が連通していてもその送気路７を通じ
て逆流は防止される。 Next, when water is to be supplied, the air supply button 27 is further pushed in with that finger. At this time, since the spring 30 has a weaker elastic force than the spring 36, the air supply button 27 is pushed down first, and the check valve body 23 is forcibly opened by the valve pusher 26. Therefore, even if the check valve body 23 is stuck, the stuck state can be released. Further, the lower surface of the finger rest member 29 abuts against the seal member 32, closing the space therebetween. Further, the valve body 16 is pushed down, the lower communication groove 18 is removed from the air inlet 11, the communication groove 18 is closed, and the upper communication groove 17 is opened across the water inlet 12 and the water outlet 14 to face each other. To position. Therefore, the air supply is cut off, and the communication groove 1 above the water inlet 12 is cut off.
Water flows into 7 from the water supply device side, and water flows into the water outlet 1.
4 to the water supply channel 8 on the nozzle 6 side. In other words, water can be supplied. Note that in this water supply state, the check valve 21 is open, but the opening of the air release hole 15 is covered with a finger, and the space between the receiving seat 28 and the finger rest member 29 is sealed by the seal member 32. Therefore, the air supply path 7 is connected to the nozzle 6 side.
Even if the air supply channel 8 is in communication with the air supply channel 8, backflow is prevented through the air supply channel 7.
また、上記実施例では切換え弁装置９の弁体１
６はその装置本体１０から外部に直接取り外せる
ので、逆止弁２１が破損した場合にも、簡単に点
検修理、交換を行なうことができる。 Further, in the above embodiment, the valve body 1 of the switching valve device 9
6 can be directly removed from the main body 10 of the device, so even if the check valve 21 is damaged, it can be easily inspected, repaired, and replaced.
以上説明したように本発明は弁操作を行なうと
き、弁押し捧によつて逆止弁体の固着を強制的に
解除するため、通常に使用するだけで常に良好な
状態に逆止弁を維持することができる。 As explained above, the present invention forcibly releases the fixation of the check valve body by pressing the valve when operating the valve, so the check valve can always be kept in good condition just by normal use. can do.
図面は本発明の一実施例を示すもので、第１図
は全体の概略図、第２図は要部の縦断面図であ
る。
７……送気路、９……切換え弁装置、１０……
装置本体、１１……空気流入口、１３……空気流
出口、１５……空気放出孔、１６……弁体、２１
……逆止弁、２２……弁口、２３……逆止弁体、
２４……弁本体、２６……弁押し捧、２７……送
気釦。
The drawings show one embodiment of the present invention, and FIG. 1 is a schematic diagram of the entire device, and FIG. 2 is a vertical cross-sectional view of a main part. 7...Air supply path, 9...Switching valve device, 10...
Device body, 11... Air inlet, 13... Air outlet, 15... Air discharge hole, 16... Valve body, 21
... Check valve, 22 ... Valve port, 23 ... Check valve body,
24...Valve body, 26...Valve pusher, 27...Air supply button.
Claims (1)
内視鏡先端部のノズルとの間を連結する送気路お
よび流体管路の途中に設けられた装置本体と；上
記空気供給装置側とノズル側とを連結する送気路
を連通する送気用連通路と、上記他の流体供給装
置側とノズル側とを連結する流体管路を連通する
流体用連通路と、上記送気用連通路を介して外部
と空気供給装置側の送気路とを連通する空気放出
孔とを備え、上記送気路と送気用連通路との連通
と上記他の流体管路と流体用連通路との連通を切
換えるために上記装置本体に摺動自在に嵌挿され
た弁体と；を有する内視鏡の流体切換え装置にお
いて、 上気送気用連通路の上記空気放出孔と対向する
部位に設けられた弁口と、この弁口に設けられ上
記送気用連通路とノズル側の送気路との連通を閉
塞する逆止弁体と、上記弁体に設けられ上記空気
放出孔に摺動自在に挿入されることにより上記逆
止弁体を開放する弁押し棒とを具備したことを特
徴とする内視鏡の流体切換え装置。 ２ 上記弁体は装置本体に対し着脱自在に設けて
なることを特徴とする特許請求の範囲第１項に記
載の内視鏡の流体切換え装置。[Scope of Claims] 1. A device main body provided in the middle of an air supply path and a fluid conduit that connect the air supply device side and other fluid supply device side and the nozzle at the tip of the endoscope; an air supply communication path that communicates an air supply path that connects the air supply device side and the nozzle side; a fluid communication path that communicates a fluid pipe path that connects the other fluid supply device side and the nozzle side; an air release hole that communicates between the outside and the air supply passage on the air supply device side via the air supply communication passage, and the air supply passage communicates with the air supply passage and the other fluid pipe. and a valve body slidably inserted into the main body of the device for switching the communication between the upper air supply communication passage and the air discharge passage. A valve port provided at a portion facing the hole, a check valve body provided at the valve port and blocking communication between the air supply communication path and the air supply path on the nozzle side, and a check valve body provided at the valve body. A fluid switching device for an endoscope, comprising a valve push rod that opens the check valve body by being slidably inserted into the air discharge hole. 2. The fluid switching device for an endoscope according to claim 1, wherein the valve body is detachably provided to the device body.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4610780A JPS56143132A (en) | 1980-04-08 | 1980-04-08 | Air sending appapatus of endoscope |
| US06/216,943 US4361138A (en) | 1980-03-31 | 1980-12-16 | Ventilation/feedwater switching apparatus for endoscope |
| EP81301006A EP0037191B1 (en) | 1980-03-31 | 1981-03-10 | A ventilation/feedwater switching apparatus for endoscope |
| DE8181301006T DE3160743D1 (en) | 1980-03-31 | 1981-03-10 | A ventilation/feedwater switching apparatus for endoscope |
| AT81301006T ATE4410T1 (en) | 1980-03-31 | 1981-03-10 | SWITCHING DEVICE ON ENDOSCOPES FOR THE SUPPLY OF AIR OR. OF WATER. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4610780A JPS56143132A (en) | 1980-04-08 | 1980-04-08 | Air sending appapatus of endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56143132A JPS56143132A (en) | 1981-11-07 |
| JPS6320531B2 true JPS6320531B2 (en) | 1988-04-28 |
Family
ID=12737763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4610780A Granted JPS56143132A (en) | 1980-03-31 | 1980-04-08 | Air sending appapatus of endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56143132A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019244506A1 (en) | 2018-06-18 | 2019-12-26 | 日本特殊陶業株式会社 | Optical wavelength conversion material, optical wavelength conversion device, and light emitting device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2011336623B2 (en) * | 2010-11-30 | 2016-03-31 | Medivators Inc. | Disposable air/water valve for an endoscope |
| EP4218538B1 (en) | 2018-05-21 | 2024-08-28 | Medivators Inc. | Cleaning adapter and method of cleaning an endoscope |
| EP4061197A1 (en) * | 2019-11-18 | 2022-09-28 | United States Endoscopy Group, Inc. | Eus valve assemblies |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827117U (en) * | 1971-08-05 | 1973-04-02 | ||
| JPS4835588U (en) * | 1971-08-30 | 1973-04-27 | ||
| JPS56100034A (en) * | 1980-01-14 | 1981-08-11 | Olympus Optical Co | Air sending apparatus of endoscope |
| JPS56102229A (en) * | 1980-01-18 | 1981-08-15 | Olympus Optical Co | Air and water sending switch apparatus of endoscope |
-
1980
- 1980-04-08 JP JP4610780A patent/JPS56143132A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827117U (en) * | 1971-08-05 | 1973-04-02 | ||
| JPS4835588U (en) * | 1971-08-30 | 1973-04-27 | ||
| JPS56100034A (en) * | 1980-01-14 | 1981-08-11 | Olympus Optical Co | Air sending apparatus of endoscope |
| JPS56102229A (en) * | 1980-01-18 | 1981-08-15 | Olympus Optical Co | Air and water sending switch apparatus of endoscope |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019244506A1 (en) | 2018-06-18 | 2019-12-26 | 日本特殊陶業株式会社 | Optical wavelength conversion material, optical wavelength conversion device, and light emitting device |
| KR20200144142A (en) | 2018-06-18 | 2020-12-28 | 니뽄 도쿠슈 도교 가부시키가이샤 | Optical wavelength conversion member, optical wavelength conversion device, and light emitting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56143132A (en) | 1981-11-07 |
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