JPH0984748A - Air supply and water supply nozzle for endoscope - Google Patents

Air supply and water supply nozzle for endoscope

Info

Publication number
JPH0984748A
JPH0984748A JP7242921A JP24292195A JPH0984748A JP H0984748 A JPH0984748 A JP H0984748A JP 7242921 A JP7242921 A JP 7242921A JP 24292195 A JP24292195 A JP 24292195A JP H0984748 A JPH0984748 A JP H0984748A
Authority
JP
Japan
Prior art keywords
air
nozzle
water supply
water
tip
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.)
Pending
Application number
JP7242921A
Other languages
Japanese (ja)
Inventor
Naotake Mimori
尚武 三森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujinon Corp
Original Assignee
Fuji Photo Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Priority to JP7242921A priority Critical patent/JPH0984748A/en
Publication of JPH0984748A publication Critical patent/JPH0984748A/en
Pending legal-status Critical Current

Links

Landscapes

  • Endoscopes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an air supply and water supply nozzle for endoscope in which a maintenance such as washing, repair, replacement or the like is facilitated, the nozzle is hardly clogged, and there is no possibility of damaging the body cavity. SOLUTION: The nozzle body 32 of an air supply and water supply nozzle 10 is laid in the state retreated from the tip surface 22A of a tip hard part 22 by the energizing force of a spring in no use, and protruded from the tip end 22A of the tip hard part 22, only in air supply and water supply, against the energizing force of the spring 34 by the air supply and water supply pressure to inject compressed air or liquid toward an objective lens. Since the air supply and water supply nozzle 10 is in the state housed in the tip hard part 22 in no use, it has no possibility of damaging the body cavity. The nozzle is hardly clogged. Further, since a contaminant such as body fluid never flows back to the inner part, there is no fear of infection by the penetrated contaminant, and washing is also facilitated.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は内視鏡の送気・送水
ノズルに係り、特に内視鏡先端硬質部に設けられ、エア
又は液体(洗浄液)を先端硬質部の対物レンズに向けて
噴射する内視鏡の送気・送水ノズルに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply / water supply nozzle of an endoscope, and in particular, it is provided in a rigid portion of a distal end of an endoscope and jets air or liquid (cleaning liquid) toward an objective lens of the rigid end of the endoscope. The present invention relates to an air supply / water supply nozzle for an endoscope.

【0002】[0002]

【従来の技術】内視鏡の先端硬質部には、対物レンズに
付着した汚れを除去するための送気・送水ノズルが設け
られている。送気・送水ノズルは、送気・送水口から供
給される液体(洗浄液)を対物レンズに向けて噴射する
ことによりその表面に付着した汚れを洗浄し、エアを噴
射することにより、前記洗浄によりその表面に付着した
液体を除去、乾燥させる。
2. Description of the Related Art An endoscope has a hard tip portion provided with an air / water feed nozzle for removing dirt adhering to an objective lens. The air supply / water supply nozzle cleans the dirt adhering to the surface by spraying the liquid (cleaning liquid) supplied from the air supply / water supply port toward the objective lens, and by spraying air, The liquid adhering to the surface is removed and dried.

【0003】通常、前記内視鏡は、送気・送水ノズルよ
り噴出するエアと液体との切替を手元操作部にあるA/
W切替バルブにより行うが、その構造上、A/W切替バ
ルブに設けられている空気圧を逃がす孔と前記送気・送
水ノズルは連通されている。このため、前記手元操作部
内には、体内観察のために体内の圧力を上げた際に、圧
力が送気・送水ノズル、バルブを介して体内のエアが体
外に漏洩して圧力が下がるのを防止する逆止弁が設けら
れている。
Normally, the endoscope is provided with an A / A switch at a hand operation section for switching between air and liquid ejected from an air / water supply nozzle.
This is performed by a W switching valve, but due to its structure, the air pressure releasing hole provided in the A / W switching valve is communicated with the air / water feeding nozzle. For this reason, when the pressure inside the body is increased for observation of the inside of the body at the hand operation part, the pressure inside the body leaks out of the body through the air / water nozzle and the valve, and the pressure drops. A check valve is provided to prevent this.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、前記手
元操作部内に設けられた逆止弁では、送気・送水ノズル
及び挿入部内のチューブの汚染までは防ぐことができ
ず、また洗浄も充分に行うことができないため、内視鏡
を介しての患者間の感染が発生するという恐れがある。
また、逆止弁が操作部内に配置されていると修理、交換
等のメンテナンスに手間もかかるという問題がある。更
に、送気・送水ノズルは、常に開口した状態にあるため
詰まり易く、また、常に先端硬質部から突出した状態に
あるので、体腔内を傷つける恐れがある。
However, the check valve provided in the hand operation section cannot prevent contamination of the air / water nozzle and the tube in the insertion section, and also performs sufficient cleaning. Inability to do so can lead to infection between patients via the endoscope.
Further, if the check valve is arranged in the operation portion, there is a problem that maintenance such as repair and replacement takes time. Further, since the air / water feeding nozzle is always open, it is likely to be clogged. Further, since the air / water feeding nozzle is always projected from the hard end portion, the inside of the body cavity may be damaged.

【0005】本発明はこのような事情に鑑みてなされた
もので、洗浄、修理、交換等のメンテナンスが容易で且
つノズルの詰まりを起こしにくく、体腔内を傷つける恐
れのない内視鏡の送気・送水ノズルを提供することを目
的とする。
The present invention has been made in view of the above circumstances, and it is easy to perform maintenance such as cleaning, repair, replacement, and the like, which is unlikely to cause nozzle clogging, and which does not damage the inside of a body cavity. -The purpose is to provide a water supply nozzle.

【0006】[0006]

【課題を解決するための手段】本発明は、前記目的を達
成するために、内視鏡挿入部の先端硬質部の対物レンズ
に向けてエア又は液体を送気・送水する送気・送水ノズ
ルを内視鏡挿入部の先端硬質部に有する内視鏡におい
て、前記送気・送水ノズルは、前記先端硬質部に穿設さ
れた穴内に摺動自在に嵌入されるとともに、付勢部材に
よって前記先端硬質部の内側に向けて付勢されて先端硬
質部の送気・送水口を閉成し、送気・送水時には、送気
・送水ノズルは送気・送水の圧力によって付勢部材の付
勢力に抗して先端硬性部の穴外に移動して前記送気・送
水口を開放し、前記対物レンズに向けてエア又は液体を
噴出することを特徴とする。
In order to achieve the above-mentioned object, the present invention provides an air-feeding / water-feeding nozzle for feeding air / liquid to an objective lens of a distal end hard portion of an endoscope insertion portion. In the endoscope having a distal end hard portion of the endoscope insertion portion, the air / water feeding nozzle is slidably fitted in a hole formed in the distal end hard portion, and is urged by an urging member. It is urged toward the inside of the hard tip to close the air / water feed port of the hard tip, and at the time of air / water feed, the air / water nozzle is biased by the pressure of the air / water. It is characterized in that it moves to the outside of the hole of the rigid tip portion against the force to open the air / water supply port, and ejects air or liquid toward the objective lens.

【0007】本発明によれば、送気・送水ノズルは、不
使用時は付勢部材の付勢力により先端構成部に穿設され
た穴内に位置され、先端硬質部表面から先端硬質部の内
側に退避した状態にあり、送気・送水時にのみ、その送
気・送水圧によって前記付勢部材の付勢力に抗して前記
先端硬質部より突出して対物レンズに向けてエア又は液
体を噴射する。このように、送気・送水ノズルは、不使
用時は、先端硬質部内に収納された状態にあるので、体
腔内を傷つける恐れがない。また、常に開口した状態に
ある従来の送気・送水ノズルに比べ、ノズルの詰まりが
起こりにくい。更に、体液等の汚染物が内部に流入する
ことがないので、進入した汚染物による感染の心配がな
く、洗浄が容易になる。
According to the present invention, the air / water feeding nozzle is located in the hole formed in the tip forming portion by the urging force of the urging member when not in use, and extends from the surface of the hard tip portion to the inside of the hard tip portion. The air or liquid is jetted toward the objective lens by protruding from the tip hard portion against the urging force of the urging member by the air / water pressure only during air / water supply. . As described above, the air / water feeding nozzle is in a state of being housed in the distal end hard portion when not in use, so that there is no fear of damaging the inside of the body cavity. Further, the nozzle is less likely to be clogged as compared with the conventional air / water feeding nozzle which is always open. Furthermore, since contaminants such as body fluids do not flow into the interior, there is no concern about infection due to the contaminants that have entered, and cleaning is facilitated.

【0008】[0008]

【実施の形態】以下添付図面に従って本発明に係る内視
鏡の送気・送水ノズルの好ましい実施の形態を詳述す
る。図1は、本発明に係る内視鏡の送気・送水ノズルが
適用された内視鏡12の全体図である。同図に示すよう
に、前記内視鏡12は手元操作部14を有し、この手元
操作部14には挿入部16が接続されている。挿入部1
6の先端には湾曲部18が形成されており、湾曲部18
は、手元操作部14に設けられた操作ノブ20を回動す
ることにより湾曲操作される。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of an air / water supply nozzle for an endoscope according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an overall view of an endoscope 12 to which an air / water feeding nozzle of the endoscope according to the present invention is applied. As shown in the figure, the endoscope 12 has a hand operation unit 14, and an insertion unit 16 is connected to the hand operation unit 14. Insertion part 1
The curved portion 18 is formed at the tip of the curved portion 18.
The bending operation is performed by rotating the operation knob 20 provided on the hand operation unit 14.

【0009】前記湾曲部18の先端には先端硬質部22
が設けられており、この先端硬質部22の先端面22A
には図2に示すように、対物レンズ24、照明用レンズ
26、28、鉗子チャンネル30、及び前記送気・送水
ノズル10がそれぞれ所定の位置に配設されている。前
記送気・送水ノズル10は、図3乃至図5に示すように
前記先端硬質部22の先端面22Aより出没自在に設け
られ、ノズル本体32、スプリング34及び押さえリン
グ36から構成される。
A hard tip portion 22 is provided at the tip of the bending portion 18.
Is provided, and the tip surface 22A of the tip rigid portion 22 is provided.
As shown in FIG. 2, the objective lens 24, the illumination lenses 26 and 28, the forceps channel 30, and the air supply / water supply nozzle 10 are arranged at predetermined positions. As shown in FIGS. 3 to 5, the air / water feeding nozzle 10 is provided so as to be retractable from the tip surface 22A of the hard tip portion 22 and is composed of a nozzle body 32, a spring 34, and a pressing ring 36.

【0010】前記ノズル本体32は、図4に示すよう
に、基端部に拡径部32Aを有する円柱状に形成され、
内部に軸線に沿った中空部38が基端部から先端近傍ま
で形成されている。ノズル本体32の先端近傍の外周面
には前記中空部38に連通する噴射口40が形成されて
おり、この噴射口40を介して前記中空部38内を流れ
るエア又は液体(洗浄液)が、前記対物レンズ24に向
けて噴射される。
As shown in FIG. 4, the nozzle main body 32 is formed in a columnar shape having an enlarged diameter portion 32A at the base end portion,
A hollow portion 38 is formed inside along the axis from the base end portion to the vicinity of the tip end. An injection port 40 communicating with the hollow portion 38 is formed on the outer peripheral surface near the tip of the nozzle body 32, and air or liquid (cleaning liquid) flowing in the hollow portion 38 through the injection port 40 is It is ejected toward the objective lens 24.

【0011】前記ノズル本体32は、前記先端硬質部2
2に形成された取付穴42に摺動自在に嵌入されること
により、その取付穴42の底面42Aに形成された内視
鏡の送気・送水口44に接続される。この送気・送水口
44には、図3に示すように、送気・送水管46が連結
されており、更に、送気・送水管46には図示しないチ
ューブが連結されている。前記エア及び液体は前記チュ
ーブ及び送気・送水管46を介して前記送気・送水口4
4に供給される。
The nozzle body 32 includes the tip hard portion 2
By being slidably fitted into the mounting hole 42 formed in the second mounting hole 42, it is connected to the air / water feeding port 44 of the endoscope formed in the bottom surface 42A of the mounting hole 42. As shown in FIG. 3, an air supply / water supply pipe 46 is connected to the air supply / water supply port 44, and a tube (not shown) is connected to the air supply / water supply pipe 46. The air and liquid are supplied to the air / water supply port 4 through the tube and the air / water supply pipe 46.
4 is supplied.

【0012】前記取付穴42は、前記ノズル本体32の
拡径部32Aと同一径で穿設されるとともに、ノズル本
体32と同一長で穿設されている。また、ノズル本体3
2は、この取付穴42の内周面上を軸線に沿って摺動
し、後述するように送気・送水時のみ前記先端面22A
から突出して(図5参照)、エア又は液体を対物レンズ
24に向けて噴射する。ここで、ノズル本体32の拡径
部32Aの外周面は、Dカットされ、このDカット部4
8が取付穴42の内周面に軸線に沿って形成された平坦
部50に嵌合されている。ノズル本体32は、このDカ
ット部48と平坦部50の作用により、常に噴射口40
が対物レンズ24に向いた状態で取付穴42上を移動す
る。
The mounting hole 42 has the same diameter as the expanded diameter portion 32A of the nozzle body 32 and has the same length as the nozzle body 32. In addition, the nozzle body 3
2 slides on the inner peripheral surface of the mounting hole 42 along the axis line, and the tip surface 22A is provided only when air and water are supplied, as will be described later.
And eject air or liquid toward the objective lens 24. Here, the outer peripheral surface of the expanded diameter portion 32A of the nozzle body 32 is D-cut, and the D-cut portion 4
8 is fitted in a flat portion 50 formed along the axis on the inner peripheral surface of the mounting hole 42. The nozzle body 32 is constantly operated by the action of the D-cut portion 48 and the flat portion 50, so that the injection port 40 is always maintained.
Moves on the mounting hole 42 while facing the objective lens 24.

【0013】前記スプリング34は、前記ノズル本体3
2の外径と同一の内径を有し、ノズル本体32に嵌入さ
れる。前記ノズル本体32は、後述するように、このス
プリング34の付勢力により取付穴42内に退避し、収
納される。そして、送気・送水時にのみ、その供給され
るエア又は液体の圧力で前記スプリング34の付勢力に
抗して移動する。したがって、スプリング34は、供給
されるエア又は液体の圧力によってノズル本体32がそ
の付勢力に抗して移動できる程度のバネ定数のものが用
いられる。
The spring 34 is provided in the nozzle body 3
It has the same inner diameter as the outer diameter of 2, and is fitted into the nozzle body 32. As will be described later, the nozzle body 32 is retracted and stored in the mounting hole 42 by the biasing force of the spring 34. Then, only when air and water are sent, the pressure of the supplied air or liquid moves against the biasing force of the spring 34. Therefore, the spring 34 has a spring constant such that the nozzle body 32 can move against the urging force by the pressure of the supplied air or liquid.

【0014】前記押さえリング36は、その外周面に雄
ネジ部36Aが形成されている。この外周面に形成され
た雄ネジ部36Aは、前記取付穴42の入り口部に形成
された雌ネジ部42Bに螺合される。一方、押さえリン
グ36の内周面は、前記ノズル本体32の外径と同一径
で形成され、前記ノズル本体32は、この押さえリング
36の内周面上を軸線に沿って摺動する。
The pressing ring 36 has a male screw portion 36A formed on the outer peripheral surface thereof. The male screw portion 36A formed on the outer peripheral surface is screwed into the female screw portion 42B formed at the entrance of the mounting hole 42. On the other hand, the inner peripheral surface of the pressing ring 36 has the same diameter as the outer diameter of the nozzle body 32, and the nozzle main body 32 slides on the inner peripheral surface of the pressing ring 36 along the axis.

【0015】前記押さえリング36が取付穴42に取り
付けられることにより、前記スプリング34は、ノズル
本体32の拡径部32Aと押さえリング36とに挟持さ
れる。そして、その付勢力によりノズル本体32を取付
穴42の底面42に押しつける。これにより、ノズル本
体32は、取付穴42内に退避され、取付穴42内に収
納される(図4に示す状態)。一方、送気・送水時は、
内視鏡の送気・送水口44から供給されるエア又は液体
の圧力により、ノズル本体32内に形成された中空部3
8の先端面が押される。そして、供給されるエア又は液
体による先端面22Aを押す力が前記スプリング34の
付勢力より大きくなると、ノズル本体32は、前記スプ
リング34の付勢力に抗して移動する(図5に示す状
態)。ここで、前記押さえリング36の一方端には、環
状に形成されたスットパー52が一体形成されており、
前記ノズル本体32は、このストッパー52でその移動
量が規制される。すなわち、図5に示すように、前記ノ
ズル本体32が所定量移動すると前記ストッパー52の
端部に当接し、それ以上移動が規制される。これによ
り、ノズル本体32が取付穴42から外れない。また、
前記スプリング34は、このストッパー52内に収納さ
れ、その軸線方向に直行する方向の動きを規制される。
By mounting the pressing ring 36 in the mounting hole 42, the spring 34 is sandwiched between the expanded diameter portion 32A of the nozzle body 32 and the pressing ring 36. Then, the biasing force pushes the nozzle body 32 against the bottom surface 42 of the mounting hole 42. As a result, the nozzle body 32 is retracted into the mounting hole 42 and is housed in the mounting hole 42 (state shown in FIG. 4). On the other hand, when sending air or water,
The hollow portion 3 formed in the nozzle body 32 by the pressure of air or liquid supplied from the air / water supply port 44 of the endoscope.
The tip surface of 8 is pushed. When the force of the supplied air or liquid to push the tip surface 22A becomes larger than the biasing force of the spring 34, the nozzle body 32 moves against the biasing force of the spring 34 (state shown in FIG. 5). . Here, an annular stopper 52 is integrally formed at one end of the pressing ring 36,
The movement amount of the nozzle body 32 is restricted by the stopper 52. That is, as shown in FIG. 5, when the nozzle body 32 moves by a predetermined amount, it comes into contact with the end portion of the stopper 52, and the movement is restricted further. As a result, the nozzle body 32 does not come off from the mounting hole 42. Also,
The spring 34 is housed in the stopper 52, and its movement in the direction perpendicular to the axial direction is restricted.

【0016】前記の如く構成された本発明に係る内視鏡
の送気・送水ノズルの作用は次の通りである。通常(送
気・送水時以外のとき)、ノズル本体32は、スプリン
グ34の付勢力により取付穴42の底面42Aに押しつ
けられ、取付穴42内に収納されている。この状態にお
いて、ノズル本体32の先端外周面と押さえリング36
の内周面は密接し、内部に体液等の汚染物が進入するの
が防止される。
The operation of the air / water supply nozzle of the endoscope according to the present invention constructed as described above is as follows. Normally (when not supplying air or water), the nozzle body 32 is pressed against the bottom surface 42A of the mounting hole 42 by the urging force of the spring 34 and is housed in the mounting hole 42. In this state, the outer peripheral surface of the tip of the nozzle body 32 and the pressing ring 36 are
The inner peripheral surfaces of the are closely contacted with each other to prevent contaminants such as body fluid from entering the inside.

【0017】一方、送気・送水時は、内視鏡の送気・送
水口44から供給されるエア又は液体の圧力により、ノ
ズル本体32内に形成された中空部38の先端面22A
が押され、ノズル本体32は、前記スプリング34の付
勢力に抗して移動する。そして、ノズル本体32は、所
定量移動するとストッパー52で係止されるとともに、
先端硬質部22の先端面22Aから突出し、噴射口40
から対物レンズ24に向けてエア又は液体を噴射する。
On the other hand, at the time of air supply / water supply, the tip surface 22A of the hollow portion 38 formed in the nozzle body 32 is caused by the pressure of air or liquid supplied from the air supply / water supply port 44 of the endoscope.
Is pushed, the nozzle body 32 moves against the biasing force of the spring 34. When the nozzle body 32 moves by a predetermined amount, it is locked by the stopper 52, and
The ejection port 40 projects from the tip end surface 22A of the tip end hard portion 22.
Air or liquid is ejected from the target lens 24 toward the objective lens 24.

【0018】エア又は液体の供給が終了すると、中空部
38の先端面を押す力が失われるので、ノズル本体32
は、再びスプリング34による付勢力で取付穴42内に
収納される。このように、本実施の形態の送気・送水ノ
ズル10は、送気・送水時にのみ、前記先端面22Aか
ら突出し、不使用時は、先端硬質部22内に収納された
状態にあるので、体腔内を傷つける恐れがない。また、
常に開口した状態にある従来の送気・送水ノズルに比
べ、詰まりが起こりにくい。更に、体液等の汚染物が内
部に逆流することがないので、進入した汚染物による感
染の心配がない。また、これにより、逆止弁を設ける必
要もなくなり、洗浄等も容易に行うことができる。ま
た、押さえリング36の取り付け、取り外しにより、容
易に、修理、交換作業を行うことができる。
When the supply of air or liquid is completed, the force pushing the tip surface of the hollow portion 38 is lost, so the nozzle body 32
Are stored in the mounting hole 42 again by the biasing force of the spring 34. As described above, the air / water feeding nozzle 10 of the present embodiment projects from the tip surface 22A only during air / water feeding, and when not in use, is in a state of being housed in the tip rigid portion 22. There is no danger of damaging the inside of the body cavity. Also,
Compared to the conventional air / water nozzle that is always open, clogging is less likely to occur. Furthermore, since contaminants such as body fluids do not flow back into the interior, there is no risk of infection due to invading contaminants. Further, this eliminates the need for providing a check valve, and can easily perform cleaning and the like. Further, by attaching and detaching the pressing ring 36, repair and replacement work can be easily performed.

【0019】図6及び図7は、本発明に係る内視鏡の送
気・送水ノズルの第2の実施の形態の断面図である。な
お、前記第1の実施の形態と同一の部材については、同
一符号を付してその説明は省略する。図6、図7に示す
ように、第2の実施の形態の送気・送水ノズル11で
は、ノズル先端部におけるシールを確実なものとするた
めに、ノズル本体32の先端縁に、先端方向に向かって
拡径するテーパ面32Bを形成し、一方、押さえリング
36の先端内周縁には、前記テーパ面32Bが密着する
テーパ面36Bを形成する。
6 and 7 are cross-sectional views of a second embodiment of an air / water supply nozzle for an endoscope according to the present invention. The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 6 and FIG. 7, in the air / water supply nozzle 11 of the second embodiment, in order to ensure the sealing at the nozzle tip portion, the nozzle body 32 is provided with a tip edge in the tip direction in order to ensure sealing. A tapered surface 32B is formed so as to increase in diameter, while a tapered surface 36B with which the tapered surface 32B is in close contact is formed on the inner peripheral edge of the tip of the pressing ring 36.

【0020】前記構成により、ノズル本体32は、ノズ
ル本体32を取付穴42に収納した際、テーパ面32B
とテーパ面36Bが密着するので、ノズル本体32と押
さえリング36との密閉性を向上させることができる。
これにより、ノズル先端部を完全にシールすることがで
きる。
With the above structure, the nozzle body 32 has a tapered surface 32B when the nozzle body 32 is housed in the mounting hole 42.
Since the taper surface 36B comes into close contact with the taper surface 36B, the hermeticity between the nozzle body 32 and the pressing ring 36 can be improved.
Thereby, the tip of the nozzle can be completely sealed.

【0021】[0021]

【発明の効果】以上説明したように本発明に係る内視鏡
の送気・送水ノズルによれば、送気・送水ノズルは、送
気・送水時のみ先端硬質部より突出し、不使用時は、先
端硬質部内に収納された状態にあるので、体腔内を傷つ
ける恐れがない。また、常に開口した状態にある従来の
送気・送水ノズルに比べ、詰まりが起こりにくい。更
に、体液等の汚染物が内部に逆流することがないので、
進入した汚染物による感染の心配がない。
As described above, according to the air supply / water supply nozzle of the endoscope of the present invention, the air supply / water supply nozzle projects from the distal end hard portion only during air supply / water supply, and when not in use. Since it is housed in the hard tip, there is no risk of damaging the inside of the body cavity. In addition, clogging is less likely to occur as compared with a conventional air / water feeding nozzle that is always open. Furthermore, since contaminants such as body fluids do not flow back inside,
There is no concern about infection due to invading contaminants.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る内視鏡の送気・送水ノズルが適用
された内視鏡の全体図
FIG. 1 is an overall view of an endoscope to which an air / water feeding nozzle for an endoscope according to the present invention is applied.

【図2】先端硬質部の正面図FIG. 2 is a front view of a hard tip portion.

【図3】図2におけるA−A線断面図3 is a sectional view taken along line AA in FIG.

【図4】本発明に係る内視鏡の送気・送水ノズルの第1
の実施の形態の断面図(不使用時)
FIG. 4 shows a first air / water feeding nozzle of the endoscope according to the present invention.
Sectional view of the embodiment (when not in use)

【図5】本発明に係る内視鏡の送気・送水ノズルの第1
の実施の形態の断面図(送気・送水時)
FIG. 5 is a first air / water supply nozzle of the endoscope according to the present invention.
Cross-sectional view of the embodiment (when supplying air and water)

【図6】本発明に係る内視鏡の送気・送水ノズルの第2
の実施の形態の断面図(不使用時)
FIG. 6 is a second view of the air / water supply nozzle of the endoscope according to the present invention.
Sectional view of the embodiment (when not in use)

【図7】本発明に係る内視鏡の送気・送水ノズルの第2
の実施の形態の断面図(送気・送水時)
FIG. 7 is a second view of the air / water supply nozzle of the endoscope according to the present invention.
Cross-sectional view of the embodiment (when supplying air and water)

【符号の説明】[Explanation of symbols]

10、11…送気・送水ノズル 12…内視鏡 22…先端硬質部 24…対物レンズ 32…ノズル本体 34…スプリング 36…押さえリング 40…噴射口 44…内視鏡の送気・送水口 10, 11 ... Air supply / water supply nozzle 12 ... Endoscope 22 ... Tip hard part 24 ... Objective lens 32 ... Nozzle body 34 ... Spring 36 ... Pressing ring 40 ... Jet port 44 ... Endoscope air supply / water supply port

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 内視鏡挿入部の先端硬質部の対物レンズ
に向けてエア又は液体を送気・送水する送気・送水ノズ
ルを内視鏡挿入部の先端硬質部に有する内視鏡におい
て、 前記送気・送水ノズルは、前記先端硬質部に穿設された
穴内に摺動自在に嵌入されるとともに、付勢部材によっ
て前記先端硬質部の内側に向けて付勢されて先端硬質部
の送気・送水口を閉成し、送気・送水時には、送気・送
水ノズルは送気・送水の圧力によって付勢部材の付勢力
に抗して先端硬性部の穴外に移動して前記送気・送水口
を開放し、前記対物レンズに向けてエア又は液体を噴出
することを特徴とする内視鏡の送気・送水ノズル。
1. An endoscope having an air / water feeding nozzle for feeding / air-supplying air or liquid toward an objective lens of a rigid tip portion of an endoscope insertion portion in a rigid tip portion of the endoscope insertion portion. The air / water feeding nozzle is slidably fitted in a hole formed in the distal end hard portion, and is biased toward the inside of the distal end hard portion by a biasing member so that When the air supply / water supply port is closed and the air supply / water supply is operated, the air supply / water supply nozzle moves to the outside of the hole of the tip rigid part against the urging force of the urging member by the pressure of the air supply / water supply. An air / water feeding nozzle for an endoscope, characterized in that an air / water feeding port is opened and air or liquid is ejected toward the objective lens.
【請求項2】 前記送気・送水ノズルの先端外周縁には
テーパ面が形成されるとともに、前記穴の縁部には、前
記送気・送水ノズルのテーパ面と密着するテーパ面が形
成されていることを特徴とする請求項1記載の内視鏡の
送気・送水ノズル。
2. A taper surface is formed on the outer peripheral edge of the tip of the air / water nozzle, and a taper surface is formed at the edge of the hole so as to be in close contact with the taper surface of the air / water nozzle. The air / water supply nozzle for an endoscope according to claim 1, wherein
JP7242921A 1995-09-21 1995-09-21 Air supply and water supply nozzle for endoscope Pending JPH0984748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7242921A JPH0984748A (en) 1995-09-21 1995-09-21 Air supply and water supply nozzle for endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7242921A JPH0984748A (en) 1995-09-21 1995-09-21 Air supply and water supply nozzle for endoscope

Publications (1)

Publication Number Publication Date
JPH0984748A true JPH0984748A (en) 1997-03-31

Family

ID=17096196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7242921A Pending JPH0984748A (en) 1995-09-21 1995-09-21 Air supply and water supply nozzle for endoscope

Country Status (1)

Country Link
JP (1) JPH0984748A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006167242A (en) * 2004-12-17 2006-06-29 Pentax Corp Endoscope water supply device
JP2006304915A (en) * 2005-04-27 2006-11-09 Pentax Corp Endoscope water supply device
JP2017056405A (en) * 2015-09-16 2017-03-23 株式会社パウレック Fluidized bed equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006167242A (en) * 2004-12-17 2006-06-29 Pentax Corp Endoscope water supply device
JP2006304915A (en) * 2005-04-27 2006-11-09 Pentax Corp Endoscope water supply device
JP2017056405A (en) * 2015-09-16 2017-03-23 株式会社パウレック Fluidized bed equipment

Similar Documents

Publication Publication Date Title
JP4144444B2 (en) Endoscope fluid delivery device
JP3565099B2 (en) Endoscope fluid supply device
US6984204B2 (en) Liquid feed device for use on endoscopes
JP4139920B2 (en) Endoscope pipe structure
WO2018083822A1 (en) Dust removing device and dust removing system
US5674183A (en) Fiberscopes and spray modules
US20120316395A1 (en) Fluid nozzle unit and endoscope
JP2010057728A (en) Piping connection adapter
JPS6349502B2 (en)
JP2009233093A (en) Liquid supply catheter for endoscope
JP3345044B2 (en) Endoscope
JPS6340536B2 (en)
JP3493998B2 (en) Endoscope fluid injection nozzle
JP2009268806A (en) Fluid spray nozzle and endoscope
JPH0975297A (en) Feed air/feed water nozzle
JPS6317446Y2 (en)
JP7642460B2 (en) Endoscopy
JPH08238214A (en) Sub-water supply device for endoscope
JPH08238211A (en) Endoscope
JP3276192B2 (en) Endoscope air / water switching device
JPH05103749A (en) Endoscope
JPH08224211A (en) Endoscope
JP3417718B2 (en) Endoscope conduit switching device
JP2006304915A (en) Endoscope water supply device
JPH08550A (en) Check valve for endoscope