JPH08191791A - Cover-type endoscope - Google Patents

Cover-type endoscope

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Publication number
JPH08191791A
JPH08191791A JP452095A JP452095A JPH08191791A JP H08191791 A JPH08191791 A JP H08191791A JP 452095 A JP452095 A JP 452095A JP 452095 A JP452095 A JP 452095A JP H08191791 A JPH08191791 A JP H08191791A
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Prior art keywords
distal end
cover
cover member
endoscope
portion
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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.)
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JP452095A
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Japanese (ja)
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JP3540407B2 (en )
Inventor
Kiyoshi Miyake
清士 三宅
Original Assignee
Olympus Optical Co Ltd
オリンパス光学工業株式会社
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Abstract

PURPOSE: To prevent trouble in washing such as air-blowing and water-supplying even when positions of head faces of a head constituting part vary due to loose ness by a fixing method in fixing an endoscope cover and an endoscope to be covered and size dispersion of parts in manufacturing, by using a simple constitution. CONSTITUTION: A head cover member 14 is provided with an engaging claw 32 so as to be engaged with a groove part 31 of a head constituting part 8, and is covered by an outer coating 30, and stress from the engaging claw 32 is operated inside the radius direction by means of elastic power of the head cover member 14 near the engaging claw 32. Even when the gap on the engaging face of the engaging claw 32 with the groove part 31 is generated due to parts dispersion or the like, the gap is made 0.5mm or less. The head constituting part 8 is provided with a butt part 33, and thus, the cover-type endoscope has such a constitution that the head face of the head constituting part 8 is on the same face as the head of the head cover member 14 when a supporting part 22 which is provided on rim part of an opening part 21 of the head cover member and the butt part 33 are in contact with each other.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、観察窓と照明窓とを先端の先端構成部に有するカバー用内視鏡と、カバー用内視鏡の挿入部を外挿し先端面に送気送水ノズルを備えた先端カバー部材を有する内視鏡カバーとからなるカバー式内視鏡に関する。 The present invention relates to a gas-feeding and water-feeding nozzle and the endoscope cover having an observation window and the illumination window at the distal end configuration portion of the distal end, the insertion portion of the cover endoscopes extrapolated distal face It relates cover type endoscope comprising the endoscope cover having a front cover member having a.

【0002】 [0002]

【従来の技術】従来、人体内の観察等に用いられる内視鏡は、体腔内への挿入部に体液等が付着するのを防止するために、挿入部に保護チューブを被せて用いられるものが知られている。 Conventionally, an endoscope used for observation or the like in the human body, which in order to prevent the adhesion of body fluid or the like into the insertion portion into a body cavity and is used by covering the protective tube in the insertion portion It has been known. 内視鏡の使用後は保護チューブが取り外され、新たな保護チューブと交換される。 After use of the endoscope is removed the protective tube is replaced with a new protective tube. したがって挿入部が汚染されるのを防止することができ、それらを洗滌する必要がなく洗滌の手間が省ける。 Therefore it is possible to insert part is prevented from being contaminated, their time and effort for cleaning can be saved without the need to wash.

【0003】具体的にはたとえばUSP4,809,6 [0003] Specifically, for example USP4,809,6
78の図2にあるように観察光学系の前面に透明部を設けたカバーで挿入部全体を覆うようにしたものがある。 Is that to cover the entire insertion portion in a cover having a transparent portion in front of the observation optical system as in FIG. 2 of 78.
これの挿入部カバーと内視鏡挿入部との固定は、カバー手元側に設けた弾性端の摩擦力がより行なわれていた。 Fixed with this insertion portion cover and the endoscope insertion portion, the frictional force of the elastic end which is provided on the cover hand side has been more done.

【0004】USP4,809,678の図3のように内視鏡先端に交換可能な先端部カバーを設け、先端部カバーの手元側周囲を先端が開口した挿入部カバーの弾性端の摩擦力により固定したものもある。 [0004] As in FIG. 3 of USP4,809,678 provided a replaceable tip cover endoscope tip, the tip proximal periphery of the distal end cover by a frictional force of the elastic end of the insertion portion cover open some of which fixed. これの先端部カバーと内視鏡先端との固定方法に関する詳細は記載されていない。 Details have not been described for the method of fixing thereto the tip cover and the endoscope tip.

【0005】これとは別に実開昭58−74212や実開昭58−77318の如く、観察光学系の前面が開口した挿入部カバーを別体の係止体により外面より水密に固定するタイプのものが提案されている。 [0005] At the as separate Utility Model 58-74212 and Japanese Utility Model 58-77318 is an insert cover the front of the observation optical system is opened by engagement of the separate type which fixes the watertight the outer surface It has been proposed.

【0006】また、特願平5−111872では、内視鏡カバーの先端カバー部材と、カバー用内視鏡の先端構成部との間にはシール部材が設けられ両者を固定している。 [0006] In Japanese Patent Application No. 5-111872, the tip cover member of the endoscope cover fixing the both seal member is provided between the distal end construction part of the cover endoscope. さらに、特願平5−176971及びUSP5,1 In addition, Japanese Patent Application No. 5-176971 and USP5,1
93,525では、観察窓及び照明窓部分を突出させ、 In 93,525, it is projected to the observation window and the illumination window portion,
内視鏡カバーの先端部に設けられた上記部分に対応する開口部に嵌合することで固定するものを開示している。 It discloses a Stationary by fitting in the opening corresponding to the portion provided on the distal end of the endoscope cover.

【0007】 [0007]

【発明が解決しようとする課題】しかしながら、上記の実開昭58−74212では別体の係止体により外部からカバー用内視鏡と内視鏡カバーとを水密状態で固定しており、また、特願平5−111872ではシール部材によりカバー用内視鏡の先端構成部との間を水密状態で固定しているが、これらの従来技術では確実に両者の固定状態が保持できない可能性、つまり、ある量両者が軸方向に動く可能性があり、視野けられ等の光学的不具合のみならず、先端カバー部材の先端面から先端構成部の先端面が内側にも外側にも移動するような場合には、安定した送気送水による効果は得られず、さらに移動量によっては、送水、送気が思うように行われず洗滌、水切れに不具合が生じる虞がある。 [SUMMARY OF THE INVENTION However, and above the locking endoscope cover and endoscope cover from outside the body of the separate in real HirakiAkira 58-74212 fixed in a watertight state, also Although fixed in a watertight condition between the distal end construction part of the cover endoscope by the Japanese Patent Application No. 5-111872 sealing member, the possibility of these reliably both fixed state in the prior art can not be held, that is, an amount both may move in the axial direction, not only the optical defects such as vignetting field, so that the distal end surface of the distal end construction part from the distal end surface of the distal end cover member both move to the outside to the inside the case, stable air effect water can not be obtained, by further movement amount, water, air is not performed as I cleaning, there is a disadvantage arises fear the drainage.

【0008】また、特願平5−176971及びCPU [0008] In addition, Japanese Patent Application No. 5-176971 and CPU
5,193,525では、観察窓,照明窓と先端カバー部材の先端の開口部とが嵌合するため、観察窓及び照明窓の周辺に段差ないしは狭間が生じ送水後の残水がその部位で起こりやすくなり、視野に水滴が見える、もしくは観察窓すべてに水が覆ってしまう等の光学的な不具合が生じる虞がある。 In 5,193,525, an observation window, since the opening at the tip of the illumination window and the front cover member is fitted, the observation window and the residual water after water supply occurs stepped or interstice around the illumination window at the site occur tends, water droplets appear on the field of view, or to all the observation window there is a risk that optical such as water will cover problems will be caused.

【0009】本発明は、上記事情に鑑みてなされたものであり、簡単な構成により、内視鏡カバーとカバー用内視鏡の固定時の固定方法によるがたつきや、製造時の部品の寸法のばらつきにより先端構成部の先端面の位置が変動しても、送気、送水等洗滌に不具合が生じることのないカバー式内視鏡を提供することを目的としている。 [0009] The present invention has been made in view of the above circumstances, a simple configuration, rattling endoscopic cover and fixed at the fixing method of the cover endoscope and, during manufacture parts It is varied the position of the distal end surface of the distal end construction part due to variations in dimensions, air, and its object is to provide a cover-type endoscope is never caused trouble in water or the like washing.

【0010】 [0010]

【課題を解決するための手段及び作用】本発明のカバー式内視鏡は、観察窓と照明窓とを先端の先端構成部に有するカバー用内視鏡と、前記カバー用内視鏡の挿入部を外挿し、先端には前記観察窓と前記照明窓とに対向する部分に開口部を有し、先端面には送気送水ノズルを備えた先端カバー部材を有する内視鏡カバーとからなるカバー式内視鏡において、前記先端構成部の先端面位置と前記送気送水ノズルの口元高さ位置とが挿入方向に対して同位置か、あるいは前記送気送水ノズルの口元高さ位置の方が先端に位置させることで、内視鏡カバーとカバー用内視鏡の固定時の固定方法によるがたつきや、製造時の部品の寸法のばらつきにより先端構成部の先端面の位置が変動しても、送気、送水等洗滌に不具合が生じること防止することを Means and operation for solving the problems] cover endoscope of the present invention, the endoscope cover having an observation window and the illumination window at the distal end configuration portion of the distal end, insertion of the endoscope for the cover part extrapolated, the tip has an opening in a portion opposed to said illumination window and the observation window, made of an endoscope cover having a front cover member having a gas-feeding and water-feeding nozzle to the tip surface in the cover-type endoscope, the distal end construction part tip surface position and the air supply and mouth height of the water supply nozzle or the same position relative to the insertion direction, or towards the mouth height of the air and water supply nozzle by but be located at the tip, rattling or endoscopic cover and fixed at the fixing method of the cover endoscope, the position of the distal end surface of the distal end construction part due to variations in the dimensions of the part during production fluctuates be, air, to prevent problems will be caused that the water supply or the like washing 能とする。 And ability.

【0011】 [0011]

【実施例】以下、図面を参照しながら本発明の実施例について述べる。 EXAMPLES The following describes embodiments of the present invention with reference to the drawings.

【0012】図1ないし図7は本発明の第1実施例に係わり、図1はカバー式内視鏡の構成を示す全体図、図2 [0012] FIGS. 1 to 7 relates to a first embodiment of the present invention, FIG. 1 is an overall view showing a configuration of a cover-type endoscope, FIG. 2
は図1の先端カバー部材の先端面の構成を示す構成図、 The configuration diagram showing a configuration of a distal end surface of the distal end cover member of Figure 1,
図3は図2の送気送水ノズルの形状を示す断面図、図4 Figure 3 is a sectional view showing the shape of a gas-feeding and water-feeding nozzle of FIG. 2, FIG. 4
はカバー用内視鏡を装着した第1の状態における図2のA−A線断面を示す断面図、図5はカバー用内視鏡を装着した第2の状態における図2のA−A線断面を示す断面図、図6は図4に示した第1の状態での送気送水ノズルの作用を説明する説明図、図7は図5に示した第2の状態での送気送水ノズルの作用を説明する説明図である。 First cross-sectional view showing the A-A line cross section of Figure 2 in a state, FIG. 5 A-A line in FIG. 2 in a second state of mounting the endoscope cover equipped with endoscope cover sectional view showing a cross section, FIG. 6 is a first explanatory diagram for explaining the action of the air and water supply nozzle in a state, air and water supply nozzle in the second state 7 shown in FIG. 5 shown in FIG. 4 it is an explanatory view to explain a function of.

【0013】(構成)図1に示す第1実施例のカバー式内視鏡2は、電子内視鏡で構成された内視鏡カバー用内視鏡(以下、カバー用内視鏡と略す)3と、このカバー用内視鏡3が装着されるチャンネル付き内視鏡カバー(以下、内視鏡カバーと略す)4とで構成される。 [0013] (Configuration) cover-type endoscope 2 of the first embodiment shown in FIG. 1, the electronic endoscope in the configured endoscope cover endoscopes (hereinafter, referred to as a cover for endoscope) 3, channeled endoscope cover the cover endoscope 3 is mounted (hereinafter, referred to as an endoscope cover) composed of the 4.

【0014】カバー用内視鏡3は、可撓性の挿入部5 [0014] the cover endoscope 3, flexible insertion portion 5
と、この挿入部5の後端に設けた操作部6と、この操作部6から延出されたユニバーサルコード7とから構成される。 When, an operation unit 6 provided on the rear end of the insertion portion 5, and a universal cord 7 for extending from the operation portion 6. カバー用内視鏡3の先端部には先端構成部8が設けられている。 The distal end portion of the cover endoscope 3 the distal end construction part 8 is provided.

【0015】一方、カバー用内視鏡3を覆う汚染防止用の内視鏡カバー4は、挿入部カバー部11、操作部カバー12、ユニバーサルコードカバー13によって構成されていて、前記先端構成部8を被覆するよう挿入部カバー部11先端には先端カバー部材14が設けてある。 Meanwhile, the endoscope cover 4 for pollution which covers the endoscope 3 cover the insertion portion cover 11, the operation unit cover 12, be constituted by a universal cord cover 13, the distal end construction part 8 the insert cover portion 11 tip so as to cover the is provided with a distal end cover member 14. これら内視鏡カバー4の各部は全て、内視鏡検査に使用される前に予め滅菌されているものが使用され、内視鏡検査に使用した後は廃棄される。 All These units endoscope cover 4 is used which has been pre-sterilized prior to use in endoscopy, after using endoscopy is discarded.

【0016】上記挿入部カバー部11は、上記内視鏡カバー4のうち、カバー用内視鏡3の挿入部5を覆う部分及びその基端近傍を覆う部分で構成される。 [0016] The insertion portion cover portion 11, of the endoscope cover 4, and a portion covering the portion and its proximal end near the cover the insertion portion 5 of the cover endoscope 3.

【0017】操作部カバー12は、カバー用内視鏡3の操作部6を覆うカバー部分である。 The operation unit cover 12 is a cover portion that covers the operating portion 6 of the cover endoscope 3. また、ユニバーサルコードカバー13は、カバー用内視鏡3のユニバーサルコード7を覆う部分である。 Further, the universal cord cover 13 is a portion that covers the universal cord 7 in the cover endoscope 3.

【0018】図2に示すように、先端カバー部材14の先端面には開口部21が設けてあり、先端構成部8と先端カバー部材14の位置決めとして先端カバー部材6の開口部21縁部には支持部22が設けられている。 As shown in FIG. 2, the distal end surface of the distal end cover member 14 Yes an opening 21 is provided in the opening 21 the edge of the distal end cover member 6 as positioning of the distal end construction part 8 and the distal end cover member 14 the support portion 22 is provided.

【0019】先端構成部5は観察窓23、照明窓24を有し、図示しない光源装置からの照明光がカバー用内視鏡3の挿入部5内に挿通された図示しないライトガイドを伝送し照明窓24より図示しない観察部位に照射され、その戻り光を観察窓23より入射するようになっている。 The distal end construction part 5 observation window 23, having an illumination window 24 and transmits a light guide (not shown) the illumination light from the light source device (not shown) is inserted in the insertion portion 5 of the cover endoscope 3 is irradiated to the observation region (not shown) from the illumination window 24, it is incident from the observation window 23 and the returning light.

【0020】一方、先端カバー部材14先端には、送気送水方向が観察窓23が位置する方向となるよう設けた送気送水ノズル25があり、先端カバー部材14の送気送水の下流側となる外周面には切欠部26が設けてある。 Meanwhile, the distal end cover member 14 tip, there are gas-feeding and water-feeding nozzle 25 which air and water supply direction observation window 23 is provided so that the direction in which the position, the downstream side of the air water of the distal end cover member 14 the outer peripheral surface formed is provided with a notch 26. また、挿入部カバー部11には先端カバー部材14 Further, the insertion portion cover portion 11 distal cover member 14
の先端で開口し処置具等を挿通させる処置具チャンネル27が設けられている。 Treatment instrument channel 27 which opens by inserting the treatment tool or the like is provided at the tip. ここで、送気送水ノズル25 Here, air and water supply nozzle 25
は、その拡大断面である図3に示すように、先端カバー部材14の先端面に対して送気送水角度が0°〜10° As shown in FIG. 3 is an enlarged cross-section, air and water supply angle 0 ° to 10 ° relative to the distal end surface of the distal end cover member 14
となるように形成されている。 It is formed such that.

【0021】図2のA−A線断面である図4に示すように、先端構成部8には溝部31が設けてあり、その溝部31と係合するよう先端カバー部材14には係止爪32 As shown in FIG. 4 is a sectional view along line A-A of FIG. 2, the distal end construction part 8 is provided with a groove 31, the distal end cover member 14 to engage with its groove 31 locking claw 32
が設けられており、先端カバー部材14は外皮30により覆われ、係止爪32が径方向外側に押圧された場合、 Is provided, the tip cover member 14 is covered with the outer skin 30, if the locking claw 32 is pressed radially outward,
係止爪32を支持する係止爪32近傍の先端カバー部材14が弾性変形するようになっている。 The locking claw 32 near the distal end cover member 14 which supports the locking pawl 32 is adapted to be elastically deformed. この場合、係止爪32と溝部31の係合面に部品のばらつき等により狭間が生じても狭間は0.5mm未満とする。 In this case, even if the interstice due to variations in components such as the engaging surfaces of the locking claws 32 and the groove 31 Between should be less than 0.5 mm.

【0022】また、先端構成部8と先端カバー部材14 Further, the distal end construction part 8 and the distal end cover member 14
の位置決めとして先端構成部8には突き当て部33が設けられていて、先端カバー部材6の開口部21縁部に設けられた支持部22と突き当て部33が当接した場合には、先端構成部8の先端面と先端カバー部材14の先端面が同面となる構成となっている。 The distal end configuration portion 8 as the positioning be provided that abutment portion 33, when the support portion 22 and the abutting portion 33 provided in the opening 21 the edge of the distal end cover member 6 is in contact with the tip the distal end surface and the distal end surface of the distal end cover member 14 of the structure portion 8 has a configuration in which the same plane.

【0023】なお、観察窓23から入射した図示しない観察部位からの戻り光は、対物レンズ系34を介して撮像部35で撮像され、撮像信号は撮像ケーブル36により挿入部5内を伝送し外部の画像出力装置(図示せず) [0023] Incidentally, the return light from the observed region (not shown) is incident from the observation window 23 is imaged by the imaging unit 35 via the objective lens system 34, an imaging signal is externally transmitted within the insertion portion 5 by an imaging cable 36 image output apparatus (not shown)
に出力され、信号処理された後、観察部位の画像が図示しないモニタに表示されるようになっている。 Is output after being signal processing, image of the observed region is adapted to be displayed on a monitor (not shown).

【0024】(作用)このように構成されたカバー式内視鏡2では、先端構成部8と先端カバー部材14に装着する際には、突き当て部33が係止爪32を径方向に押し上げ、係止爪32が径方向に押し上げられた状態で挿入され、係止爪32近傍の係止爪32を支持する先端カバー部材14の弾性力が働くことで、係止爪32が溝部31に係合し挿入完となる。 [0024] (Operation) In the above-mentioned structure for covered type endoscope to 2, when attached to the distal end construction part 8 and the front cover member 14, the abutting portion 33 pushes up the locking claw 32 in the radial direction , it is inserted in a state where the locking claw 32 is pushed up in the radial direction, that the elastic force of the distal end cover member 14 which supports the locking pawl 32 near the locking claw 32 acts, the engaging claw 32 is the trench 31 the engaged insertion complete.

【0025】挿入が完了し、先端構成部8が先端カバー部材14に装着した状態では、係止爪32と溝部31の寸法のばらつき等により狭間が生じる可能性がある。 The insert is completed, in the state where the distal end construction part 8 is attached to the distal end cover member 14, there is a possibility that Hazama is caused by such variation in the dimensions of the locking pawl 32 and the groove 31. この狭間によって、先端構成部8は先端カバー部材14に対し軸方向に移動するが、図4に示したように、軸方向先端側への移動量は先端構成部8に設けた突き当て部3 This Hazama, although the tip configuration unit 8 is moved to the distal end cover member 14 in the axial direction, as shown in FIG. 4, the abutting portion 3 amount of movement in the axial tip side provided on the distal end construction part 8
3と支持部22の当接によって規制され、先端構成部8 It is regulated by 3 and the contact supporting portion 22, the distal end construction part 8
の先端面は先端カバー部材14の先端面とほぼ同一面になる。 The distal end surface of is substantially flush with the distal end surface of the distal end cover member 14. また、軸方向基端側への移動は、図5に示すように、係止爪32と溝部31の係合により規制される。 Also, movement in the axial direction base end side, as shown in FIG. 5, is restricted by the engagement of the locking claw 32 and the groove 31. つまり、先端構成部8の移動量は、0.5mm以内に規制される。 That is, the movement amount of the distal end construction part 8 is restricted within 0.5 mm.

【0026】この先端カバー部材14の先端面に対し移動する先端構成部8の先端面において、先端カバー部材14に設けられた送気送水ノズル25は、図3に示したように送気送水角が0°〜10°であるため、図6及び図7に示すように水流(あるいは気流)41が先端構成部8先端面にほぼ平行に流出するため、図6のように先端構成部8の先端面と先端カバー部材14の先端面とがほぼ同一面となる場合でも、図7のように先端構成部8 [0026] In the distal end surface of the distal end construction part 8 to move relative to the distal end surface of the distal end cover member 14, air water nozzles 25 provided on the distal end cover member 14, air water angle as shown in FIG. 3 because There is a 0 ° to 10 °, the water flow (or air flow) 41 as shown in FIGS. 6 and 7 for substantially parallel to flow out the distal end construction part 8 distal end surface of the distal end construction part 8 as shown in FIG. 6 even when the distal end surface of the distal end surface and the end cover member 14 and is substantially flush with the distal end construction part 8 as shown in FIG. 7
と先端カバー部材14とに段差が生じた場合でも、確実に観察窓部分に送気、送水をする作用がある。 And even if the level difference and the tip cover member 14 occurs, the air in reliably observation window portion, an effect of the water.

【0027】また、開口部21が観察窓23、照明窓2 [0027] The opening 21 is an observation window 23, illumination window 2
4の縁部から離れて両者共通の開口部21としていることで観察窓23,照明窓24近辺に先端構成部8と先端カバー部材14の嵌合による狭間,段差が生じず、観察窓23,照明窓24付近には残水が起きにくくなっている。 The observation window 23 by away from the fourth edge is set to both the common opening 21, Hazama, step does not occur due to the fitting of the illumination window the distal end construction part 8 to 24 near the distal end cover member 14, the observation window 23, the illumination window 24 near has become residual water is less likely to occur.

【0028】また、先端カバー部材14外周面に切欠部26を設けたことにより送気送水ノズル25から出た水、空気が先端構成部8先端面及び先端カバー部材14 Further, the distal end cover member 14 water exiting from the gas-feeding and water-feeding nozzle 25 by providing the notch 26 on the outer peripheral surface, air tip structure part 8 distal end surface and the end cover member 14
先端面上には残りにくくなっている。 Is less likely rest on the distal end surface.

【0029】(効果)従って、本実施例のカバー式内視鏡2では、先端構成部8の先端面の先端カバー部材14 [0029] (Effect) Therefore, the cover-type endoscope 2 of the present embodiment, the distal end cover member of the front end surface of the distal end construction part 8 14
の先端面に対する位置の移動を内側方向に規制し、それに合う送気送水ノズル25を用いたため、たとえ、先端構成部8と先端カバー部材14の固定に若干のがたつきがあっても、洗滌能力は十分に確保できる。 The movement of the position relative to the distal end face restricting inward direction, for using the gas-feeding and water-feeding nozzle 25 to fit thereto, even if there is a slight looseness for fixing the distal end construction part 8 and the front cover member 14, washing capacity can be sufficiently secured. つまり、固定法に少々のがたつきがあっても、何ら洗滌能力には問題ないという効果がある。 In other words, even if there is little rattling to a fixed method, there is an effect that there is no problem in any cleaning ability.

【0030】また、開口部21を観察窓23、照明窓2 Further, the opening 21 of the observation window 23, illumination window 2
4部分と共通とし、開口部21を大きく取ることで、観察窓23付近に残水が生じにくく、視野けられ等の光学的不具合が起きにくいという効果がある。 4 partially and the common, that a large opening 21, hardly residual water in the vicinity of the observation window 23 is generated, there is an effect that the optical failure does not occur easily, such as vignetting field.

【0031】さらに、先端カバー部材8端部に切欠部2 Furthermore, notch 2 to 8 end tip cover member
6を設けたことでさらに一層水切れが良くなるという効果がある。 Further by providing the 6 there is an effect that even drainage is improved.

【0032】次に、第2実施例について説明する。 Next, a second embodiment will be described. 図8 Figure 8
ないし図14は本発明の第2実施例に係わり、図8は先端カバー部材の先端面の構成を示す構成図、図9はカバー用内視鏡を装着した図8のB−B線断面を示す断面図、図10は図8の送気送水ノズルの形状を示す断面図、図11はカバー用内視鏡を装着した第1の状態における図8のA−A線断面を示す断面図、図12はカバー用内視鏡を装着した第2の状態における図8のA−A線断面を示す断面図、図13は図11に示した第1の状態での送気送水ノズルの作用を説明する説明図、図14は図12に示した第2の状態での送気送水ノズルの作用を説明する説明図である。 To 14 relates to a second embodiment of the present invention, FIG. 8 is a configuration diagram showing a configuration of a distal end surface of the distal end cover member, a sectional view taken along line B-B of FIG. 8 9 fitted with endoscope cover sectional view, FIG. 10 is a sectional view, FIG. 11 is a sectional view showing the a-a line cross section of FIG. 8 in the first state of mounting the endoscope cover showing the shape of the gas-feeding and water-feeding nozzle of Figure 8 showing, Figure 12 is a sectional view showing the a-a line cross section of Figure 8 in a second state of mounting the endoscope cover, FIG. 13 is the action of the air and water supply nozzle in the first state shown in FIG. 11 explain illustration, FIG. 14 is an explanatory diagram for explaining the action of air and water supply nozzle in the second state shown in FIG. 12. 第2実施例は第1実施例とほとんど同じであるので、異なる構成のみ説明し、同一の構成には同じ符号を付け説明は省略する。 Since the second embodiment is almost the same as the first embodiment, describes only different configurations, the description with the same reference numerals are given to the same configuration is omitted.

【0033】(構成)第2実施例では、先端カバー部材14の開口部21において、図8に示すように、送気送水の流路以外の部分に支持部22aを設け、図8のB− [0033] In the (configuration) second embodiment, the opening 21 of the distal end cover member 14, as shown in FIG. 8, a support portion 22a provided in a portion other than the flow path of the air and water supply, in FIG. 8 B-
B線断面である図9に示すように、先端構成部8の前記支持部22aに対向する部分に突き当て部33が設けられている。 As shown in FIG. 9 is a B line cross-section, the abutting portion 33 to the opposing portions are provided on the support portion 22a of the distal end construction part 8.

【0034】また、先端カバー部材14先端には、送気送水ノズル25を備えており、図10に示すように、前記送気送水ノズル25は、送気送水角度15°、ノズル口元高さ0.5mm以上に設定してある。 Further, the distal end cover member 14 tip, provided with a gas-feeding and water-feeding nozzle 25, as shown in FIG. 10, the air and water supply nozzle 25, air and water supply angle 15 °, the nozzle mouth height 0 It is set more than .5mm.

【0035】なお、支持部22aと突き当て部33とが当接した場合には、図11に示すように、先端構成部8 [0035] In the case where the supporting portion 22a and the abutment portion 33 is in contact, as shown in FIG. 11, the distal end construction part 8
の先端面が先端カバー部材14の先端面から0.5mm 0.5mm from the distal end surface of the distal end cover member 14 distal end face of
突出するよう構成されており、図12のように係止爪3 Is configured so as to project, the locking claw 3 as in FIG. 12
2と溝部31で係合している面に狭間が生じて係合が十分でない場合で、先端構成部8が軸方向基端側へ多少移動するような場合でも、最悪先端カバー部材14の先端面と先端構成部8の先端面がほぼ同面となるよう構成されている。 If 2 and the groove 31 engages interstice is generated in a surface engaged with is not sufficient, the distal end construction part 8 even when the slightly move in the axial direction base end side, the tip of the worst end cover member 14 the distal end surface of the face and the distal end construction part 8 is configured to be substantially Domen.

【0036】その他の構成は第1実施例と同じである。 The other construction is the same as the first embodiment.

【0037】(作用)本実施例では、突き当て部33、 [0037] (Function) In the present embodiment, the abutting portion 33,
支持部22a及び係止爪32、溝部31は、第1実施例と同様の作用をし、先端構成部8の先端面の移動量は先端カバー部材14の先端面より外側へ0.5mm以内に規制される。 Supporting portion 22a and the locking claw 32, the groove 31, the effect similar to that of the first embodiment, the amount of movement of the distal end surface of the distal end configuration portion 8 within 0.5mm outward from the distal end surface of the distal end cover member 14 It is regulated.

【0038】次に、先端カバー部材14の先端面に対し移動する先端構成部8の先端面において、先端カバー部材14に設けられた送気送水ノズル25は送気送水角度15°で観察窓23に対し斜方から送気送水を行う。 Next, the distal end surface of the distal end construction part 8 to move relative to the distal end surface of the distal end cover member 14, the observation window air water nozzles 25 provided on the distal end cover member 14 in the air water angle 15 ° 23 carry out the air and water supply from an oblique direction with respect.

【0039】つまり、図13のような先端構成部8が先端カバー部材14から突出した場合には、一度先端構成部8の先端面に水(もしくは空気)を当てて、その後観察窓23上を水流(気流)41が通ることとなる。 [0039] That is, when the distal end construction part 8 as shown in FIG. 13 is protruded from the distal end cover member 14, place a water (or air) once distal end surface of the distal end configuration portion 8, the upper subsequent observation window 23 water flow (air flow) 41 so that the passes.

【0040】また、図14のような先端構成部8と先端カバー部材14が同一面となる場合には、送気送水ノズル25による水流(気流)41が直接観察窓23に当たる。 Further, when the distal end construction part 8 and the distal end cover member 14 as shown in FIG. 14 are the same surface, the water flow (air flow) 41 by air water nozzle 25 strikes the direct observation window 23.

【0041】なお、先端構成部8と先端カバー部材14 [0041] Incidentally, the distal end construction part 8 and the distal end cover member 14
との面が、図13と図14の中間となるような場合にも、図13のように作用をする。 Surfaces of the can, even if such an intermediate in FIGS. 13 and 14, acts as shown in Figure 13.

【0042】その他の作用は第1実施例と同じである。 [0042] Other operations are the same as the first embodiment.

【0043】(効果)従って、本実施例によれば、先端構成部8の先端面の先端カバー部材14の先端面に対する位置の移動を先端面より外側に規制し、その範囲で洗滌能力をもつ送気送水ノズル25を設けたことにより、 [0043] (Effect) Therefore, according to this embodiment, the movement of the position relative to the distal end surface of the distal end cover member 14 of the distal end surface of the distal end construction part 8 regulated outside the distal end surface, with a cleaning capacity that range by providing the gas-feeding and water-feeding nozzle 25,
第1実施例と同様に、たとえ先端構成部8と先端カバー部材14の固定に若干のがたつきがあっても洗滌能力は十分に確保できる。 Like the first embodiment, though cleaning capability even slight looseness fixed distal end construction part 8 and the front cover member 14 can be sufficiently secured. つまり、固定法に少々のがたつきがあっても何ら洗滌能力には問題ないという効果がある。 In other words, there is an effect that there is no problem in any cleaning capacity even if there is little rattling to a fixed method.

【0044】また、先端構成部8の先端面を先端カバー部材14の先端面から突出させる方向で先端面の位置の変動幅を規制しているため、先端構成部8の先端面と先端カバー部材14の先端面との境界に落差が生じ、水が先端構成部8の先端面から外部に流れやすく、残水が起きにくいため、残水による視野の妨げが起きることを防ぐ効果がある。 [0044] Also, because it regulates the fluctuation range of the position of the front end face in the direction to protrude the distal end surface of the distal end configuration portion 8 from the distal end surface of the distal end cover member 14, the distal end surface of the distal end construction part 8 and the distal cover member drop occurs in the boundary between the 14 distal end face of the water is likely to flow to the outside from the distal end surface of the distal end construction part 8, since the residual water does not occur easily, it is effective to prevent the visual field hinders by remaining water occurs.

【0045】次に、第3実施例について説明する。 Next, a third embodiment will be described. 図1 Figure 1
5ないし図20は本発明の第3実施例に係わり、図15 5 through FIG. 20 relates to a third embodiment of the present invention, FIG. 15
は先端カバー部材の先端面の構成を示す構成図、図16 Configuration diagram showing a configuration of a distal end surface of the distal end cover member 16
はカバー用内視鏡を装着した図15のC−C線断面を示す断面図、図17はカバー用内視鏡を装着した第1の状態における図15のA−A線断面を示す断面図、図18 Sectional view showing a sectional view taken along line C-C of Figure 15 fitted with endoscope cover 17 is a sectional view showing the A-A line cross section of Figure 15 in a first state of mounting the endoscope cover , Figure 18
はカバー用内視鏡を装着した第2の状態における図15 Figure in the second state of mounting the endoscope cover 15
のA−A線断面を示す断面図、図19は図18に示した第2の状態での送気送水ノズルの作用を説明する説明図、図20は図17に示した第1の状態での送気送水ノズルの作用を説明する説明図である。 Cross-sectional view showing the A-A line cross section of FIG. 19 is an explanatory diagram for explaining the action of the air and water supply nozzle in the second state shown in FIG. 18, FIG. 20 in the first state shown in FIG. 17 it is an explanatory view for explaining the action of the air and water supply nozzle. 第3実施例は第1 The third embodiment is first
実施例とほとんど同じであるので、異なる構成のみ説明し、同一の構成には同じ符号を付け説明は省略する。 Since almost the same as in Example, only different construction described, the description with the same reference numerals are given to the same configuration is omitted.

【0046】(構成)第3実施例では、図15のように先端カバー部材14において、観察上視野に入ってこない程度まで長くした送気送水ノズル25を開口部21に覆い被せる形で設置する。 [0046] (Configuration) In the third embodiment, the distal end cover member 14 as shown in FIG. 15, placing the air and water supply nozzle 25 that is long to the extent that they do not not enter the observation on the field in a form covering covering the opening 21 . この場合、送気送水ノズル2 In this case, air and water supply nozzle 2
5が第1実施例における支持部22を兼ねる構成となる。 5 is configured to serve as the supporting portion 22 in the first embodiment.

【0047】また、先端構成部8の先端面が送気送水ノズル25に当接した場合は、図16に示すように、先端構成部8の先端面が先端カバー部材14の先端面と同面になるよう構成されており、また、図17に示すように、先端構成部8の軸方向基端側への移動は係止爪32 Further, when the distal end surface of the distal end configuration portion 8 is in contact with the air and water supply nozzle 25, as shown in FIG. 16, the distal end surface and the same surface tip face of the distal end cover member 14 of the distal end construction part 8 is configured so as to be, also, as shown in FIG. 17, the movement in the axial direction base end side of the distal end construction part 8 locking claw 32
と溝部31との当接により規制するよう構成している。 And configured to regulate the contact between the groove 31.
その他の構成は第1実施例と同じである。 The other structure is the same as the first embodiment.

【0048】(作用)本実施例では、第1実施例と同様な作用により、先端構成部8を先端カバー部材14に挿入し終わると、先端構成部8と先端カバー部材14が係止爪32と溝部31の係合によって固定される。 [0048] (Operations) In this embodiment, the same effect as the first embodiment, when the finished insert the distal end construction part 8 to the tip cover member 14, the distal end construction part 8 and the front cover member 14 locking claw 32 It is fixed by the groove 31 engages with. この際、係止爪32と溝部31が係合する面には、はめ合いの関係上、部品上の寸法のばらつきにより、狭間が生じる。 At this time, the surface where the locking claw 32 and the groove 31 are engaged, the relationship between the fit, the dimensional variations of the components, Hazama occurs. この狭間により先端構成部8は先端カバー部材14 The distal end construction part 8 This interstice tip cover member 14
に対し軸方向に移動するが、軸方向先端側への移動量は、図18に示すように、先端構成部8の先端面と送気送水ノズル25の当接によって規制され、先端構成部8 While moving axially relative to, the moving amount in the axial direction distal end side, as shown in FIG. 18, is restricted by the abutment of the gas-feeding and water-feeding nozzle 25 and the distal end surface of the distal end configuration portion 8, the distal end construction part 8
の先端面は先端カバー部材14の先端面と同面になる。 The distal end surface of is the front end surface and the surface of the distal end cover member 14.

【0049】また、軸方向基端側への移動は係止爪32 [0049] Also, the movement in the axial direction base end side locking claw 32
と溝部32の係合により規制される。 It is restricted by the engagement of the groove 32 and. つまり、先端構成部8の移動量は0.5mm以内に規制される(図17参照)。 That is, the movement amount of the distal end construction part 8 is restricted within 0.5 mm (see FIG. 17).

【0050】開口部21に覆い被せるよう設置した送気送水ノズル25は、図19に示すような先端構成部8の先端面が先端カバー部材14の先端面と同面になっている場合の他、図20に示すような先端構成部8と先端カバー部材14の嵌合による段差がある場合での、段差等の障害を回避して、水流41(気流)により観察窓23 The gas-feeding and water-feeding nozzle 25 was placed so that covering covering the opening 21, another case where the distal end surface of the distal end configuration portion 8 as shown in FIG. 19 is in the distal end surface and the surface of the distal end cover member 14 , in the case where there is a step by engagement of the distal end construction part 8 and the distal end cover member 14 as shown in FIG. 20, to avoid the failure of the step or the like, observed by the water flow 41 (airflow) window 23
に直に送気送水を行える作用がある。 It has the effect of enabling the direct air water to.

【0051】その他の作用は第1実施例と同じである。 [0051] The other operations are the same as in the first embodiment.

【0052】(効果)従って、本実施例によれば、先端構成部8の先端面の先端カバー部材14の先端面に対する位置の移動を先端面より内側にしその範囲で洗滌能力をもつ送気送水ノズル25を設けたため、先端構成部8 [0052] (Effect) Therefore, according to this embodiment, air with a cleaning capacity that range moves inward from the end surface of the position with respect to the distal end surface of the distal end cover member 14 of the distal end surface of the distal end construction part 8 water due to the provision of the nozzle 25, the distal end construction part 8
と先端カバー部材14の固定に0.5mm程度のがたつきがあっても洗滌能力と水切れ性能は十分に確保できる。 A fixed cleaning ability and drainage performance even if backlash of about 0.5mm to the distal end cover member 14 can be sufficiently secured.

【0053】また、送気送水ノズル25を長くし、観察窓23に近づけたことによって、直に観察窓23に対し送気送水が行え、また、先端カバー部材14と先端構成部8との嵌合による段差、狭間等の障害を回避でき、洗滌性、水切れ性が向上するという効果がある。 [0053] Further, longer gas-feeding and water-feeding nozzle 25, by which close to the observation window 23, air and water supply is performed to direct observation window 23, also fitted with end cover member 14 and the distal end construction part 8 step due case, you can avoid failure of Hazama such, there is an effect that cleaning properties, drainage is improved.

【0054】なお、本実施例において、送気送水ノズル25は全体を長く開口部21に覆い被せずともノズルの口元部分を伸ばしても同様の効果が得られる。 [0054] In the present embodiment, air water nozzle 25 is the same effect can be obtained by extending the mouth portion of the nozzle without overmolded a long opening 21 in its entirety.

【0055】次に、第4実施例について説明する。 Next, a fourth embodiment will be described. 図2 Figure 2
1ないし図27は本発明の第4実施例に係わり、図21 1 to 27 relates to a fourth embodiment of the present invention, FIG. 21
は先端カバー部材の先端面の構成を示す構成図、図22 Configuration diagram showing a configuration of a distal end surface of the distal end cover member 22
はカバー用内視鏡を装着した図21のA−A線断面を示す断面図、図23はカバー用内視鏡の装着開始状態における図21のA−A線断面を示す断面図、図24はカバー用内視鏡の装着終了状態における図21のA−A線断面を示す断面図、図25はカバー用内視鏡を装着した先端カバー部材の第1の変形例の図21におけるA−A線断面を示す断面図、図26はカバー用内視鏡を装着した先端カバー部材の第2の変形例である側視型の先端カバー部材の構成を示す構成図、図27は図26のD−D線断面を示す断面図である。 Sectional view, FIG. 23 is a sectional view showing the A-A line cross section of Figure 21 in a mounting start state in cover endoscope showing the A-A line cross section of Figure 21 fitted with endoscope cover 24 cross-sectional view showing the a-a line cross section of Figure 21 in the mounting end state in the cover endoscope, FIG. 25 in FIG. 21 of the first modification of the distal end cover member wearing the endoscope cover A- sectional view showing an a line cross-section, Figure 26 is block diagram showing the configuration of the second modification is an example side view type of the distal end cover member of the distal end cover member wearing the endoscope cover, 27 of Figure 26 it is a cross-sectional view showing the D-D line cross-section. 第4実施例は第1実施例とほとんど同じであるので、異なる構成のみ説明し、同一の構成には同じ符号を付け説明は省略する。 Since the fourth embodiment is almost the same as the first embodiment, describes only different configurations, the description with the same reference numerals are given to the same configuration is omitted.

【0056】(構成)本実施例においては、図21に示すように、先端カバー部材14の先端面の構成は第1実施例と同様であり、図21のA−A線断面である図22 [0056] In (Configuration) In this embodiment, as shown in FIG. 21, the configuration of the distal end surface of the distal end cover member 14 is the same as the first embodiment, FIG. 22 is a sectional view along line A-A of FIG. 21
に示すように、先端カバー部材14には、第1実施例で先端構成部8に設けた溝部31と係合する係止爪32の代わりに、固定ピン51とその固定ピン51に嵌合する穴部52を設けている。 As shown in, the distal end cover member 14, in place of the locking claw 32 to be engaged with the groove 31 provided in the distal end construction part 8 in the first embodiment, it is fitted to the fixed pin 51 and its locking pin 51 It is provided with a hole 52. また、固定ピン51は外皮30 The fixing pin 51 outer skin 30
が弾性変形した場合には、その弾性力が伝わるよう設けられている。 There when elastically deformed is provided such that its elastic force is transmitted. ここで固定ピン51と穴部52の嵌合、及び固定ピン51と溝31とのはめ合いでの隙間は、部品バラツキを含めても0.5mm以内となるよう設けている。 Wherein engagement of the locking pin 51 and the hole 52, and the gap in the fit between the locking pin 51 and the groove 31 are provided so as to be included parts variation is within 0.5 mm.

【0057】また、この時先端構成部8が軸方向先端側に移動した場合、移動量が最大の時、先端構成部8先端面が先端カバー部材14の先端面とほぼ同面となるよう構成されている。 [0057] Further, if this time the distal end construction part 8 is moved in the axial direction distal end side, when the movement amount of the maximum, configured to the distal end construction part 8 tip surface is substantially Domen and the distal end surface of the distal end cover member 14 It is. なお、図21において、2つの送気送水ノズル25のうち観察窓23から遠い方を送水専用とする。 Incidentally, in FIG. 21, the farther from the observation window 23 of the two gas-feeding and water-feeding nozzle 25 and water only.

【0058】その他の構成は第1実施例と同じである。 [0058] Other configuration is the same as in the first embodiment.

【0059】(作用)本実施例では、先端構成部8が先端カバー部材14に挿入する際、図23に示すように、 [0059] (Operations) In this embodiment, when the distal end construction part 8 is inserted into the distal end cover member 14, as shown in FIG. 23,
先端構成部8の先端にある斜面が固定ピン51を押し上げ挿入され、先端構成部8の挿入がさらに進み、外皮3 Slopes at the tip of the distal end construction part 8 is inserted push the locking pin 51 further advances the insertion of the distal end construction part 8, the outer cover 3
0の弾性力により固定ピン51が中心方向に押され、図24に示すように、溝部31に固定ピン51が嵌合すると先端構成部8と先端カバー部材14の固定は完了となる。 Locking pin 51 by the elastic force of 0 is pushed towards the center, as shown in FIG. 24, the fixation of the the locking pin 51 in the groove 31 is fitted the distal end construction part 8 and the front cover member 14 is completed.

【0060】先端構成部8と先端カバー部材14の固定が完了した場合、固定ピン51と溝部31とで嵌合している部分には隙間があり、先端構成部8は先端カバー部材14に対し軸方向に移動する。 [0060] If the fixing of the distal end construction part 8 and the front cover member 14 is completed, there is a gap portion is fitted out with a fixed pin 51 and the groove 31, the distal end construction part 8 relative to the distal end cover member 14 It moves in the axial direction. この時軸方向先端側に移動した場合には、先端構成部8の先端面は先端カバー部材14の先端面とほぼ同一面上になり(図22参照)、また、軸方向基端側に移動した場合には、先端構成部8の先端面が先端カバー部材14の先端面から最大でも0.5mm内側に入った状態に規制できる(図24 Movement when moving in this Tokijiku forward end side, the tip surface of the distal end configuration portion 8 becomes substantially on the same plane as the distal end surface of the distal end cover member 14 (see FIG. 22), also in the axial direction base end side when can restricted to a state in which the leading end surface of the distal end configuration portion 8 enters the 0.5mm inside a maximum from the distal end surface of the distal end cover member 14 (FIG. 24
参照)。 reference).

【0061】この先端カバー部材14の先端面に対し移動する先端構成部8の先端面において、先端カバー部材14に設けられた送気送水ノズル25は、第1実施例と同じ作用をする。 [0061] In the distal end surface of the distal end construction part 8 to move relative to the distal end surface of the distal end cover member 14, air water nozzles 25 provided on the distal end cover member 14, the same effect as the first embodiment.

【0062】(効果)従って、本実施例によれば、先端構成部8の先端面の先端カバー部材14の先端面に対する位置の移動量を送気送水ノズル25の洗滌能力範囲内に規制したため、先端構成部8と先端カバー部材14の固定に0.5mm程度のがたつきがあっても、第1実施例と同様に、洗滌能力、水切れ性能は十分に確保できる。 [0062] (Effect) Therefore, according to this embodiment, since that restricts the amount of movement of the position relative to the distal end surface of the distal end cover member 14 of the distal end surface of the distal end construction part 8 in the cleaning capacity range of gas-feeding and water-feeding nozzle 25, even if backlash of about 0.5mm for fixing the distal end construction part 8 and the front cover member 14, as in the first embodiment, cleaning ability, drainage performance can be sufficiently secured.

【0063】また、開口部21縁部に支持部22を設けていないため、開口部21を大きく取ることができ、観察窓23,照明窓24近傍に残水が起きるような先端カバー部材14と先端構成部8との嵌合による狭間や段差は生じない。 [0063] Further, since the opening 21 edge not support portion 22 is provided, it is possible to increase the opening 21, the observation window 23, the distal end cover member 14 as an illumination window 24 remaining water in the vicinity occurs between and steps provided by engaging the distal end construction part 8 does not occur.

【0064】なお、送気送水ノズル25において、観察窓23から遠い方を送水用ノズルとすることで、ノズル口元に残水が起きた場合でもその残水が視野に入る可能性はより少なくなる。 [0064] Incidentally, in the air and water supply nozzle 25, the farther from the observation window 23 by the water feed nozzle, possibly its residual water even when the remaining water occurs in the nozzle mouth enters the field of view fewer .

【0065】また、上記第1〜第4実施例において、図25のように先端カバー部材14に処置具チャンネル2 [0065] In the above first to fourth embodiment, the treatment instrument channel 2 to the distal end cover member 14 as shown in FIG. 25
7と先端カバー部材14の先端構成部8が挿入される空間に導通孔55を設けてやることにより、先端カバー部材14を先端構成部8の狭間に入り込んだ水及び汚物を処置具チャンネル27を通じ回収し、除去することができる。 By the distal end construction part 8 of the 7 and the tip cover member 14 is'll provided conducting hole 55 to the space to be inserted, through the treatment instrument channel 27 has entered into water and waste tip cover member 14 to Between the distal end construction part 8 recovered, it can be removed.

【0066】さらに、側視型内視鏡においては、図26 [0066] Further, in the lateral vision endoscope, FIG. 26
及び図26のD−D線断面である図27に示すように、 And FIG. 27 is a sectional view taken along line D-D in FIG. 26,
処置具チャンネル27のチャンネル開口部27aと先端カバー部材14に先端構成部8が挿入される空間との間に導通口55を設けることにより、先端構成部8と先端カバー部材14との間に入った水もしくは汚物を導通口55からチャンネル開口部27aを通じ処置具チャンネル27に挿通される吸引チューブ56から回収できることより、より観察窓23上及び照明窓24上の水切れが良くなる。 By providing the conductive opening 55 between the space the distal end construction part 8 is inserted into the channel opening 27a and the distal end cover member 14 of the treatment instrument channel 27, enters between the distal end construction part 8 and the distal end cover member 14 and the water or dirt from the conduction port 55 than can be recovered from the suction tube 56 inserted through the treatment instrument channel 27 through the channel opening 27a, more observation windows 23 above and drainage on the illumination window 24 is improved.

【0067】次に、第5実施例について説明する。 Next, a fifth embodiment will be described. 図2 Figure 2
8ないし図30は本発明の第5実施例に係わり、図28 8 through FIG. 30 relates to a fifth embodiment of the present invention, FIG. 28
は先端カバー部材の構成を示す断面図、図29は図28 Sectional view showing a configuration of a distal end cover member 29 is 28
の先端カバー部材へのカバー用内視鏡の装着状態を示す断面図、図30は図28の溝部及び係止爪の作用を説明する拡大図である。 Sectional view showing a mounting state of the cover endoscope to the distal end cover member, FIG. 30 is an enlarged view for explaining the action of the groove portion and the engaging claw of FIG. 第5実施例は第1実施例とほとんど同じであるので、異なる構成のみ説明し、同一の構成には同じ符号を付け説明は省略する。 Since the fifth embodiment is almost the same as the first embodiment, describes only different configurations, the description with the same reference numerals are given to the same configuration is omitted.

【0068】(構成)本実施例では、先端構成部8には溝部61が設けてあり、その溝部61と係合するよう先端カバー部材14には係止爪62が設けられており、少なくとも係止爪62周辺は弾性部材から形成されている。 [0068] (Configuration) In this embodiment, the distal end construction part 8 is provided with a groove 61, the locking claw 62 is provided on the distal end cover member 14 to engage with its groove 61, at least the engagement claw 62 near is formed of an elastic member.

【0069】また、先端カバー部材14の先端面には開口部21が設けてあり、先端構成部9と先端カバー部材14の位置決めとして、先端構成部8には突き当て部3 [0069] Further, the distal end surface of the distal end cover member 14 Yes an opening 21 is provided, as the positioning of the distal end construction part 9 and the tip cover member 14, the abutting portion 3 to the distal end construction part 8
3が先端カバー部材14の開口部21縁部には支持部2 3 in the opening 21 edge of the distal end cover member 14 support 2
2が設けられている。 2 is provided.

【0070】なお、溝部61の先端側基板側の面は斜面を成しておりこの斜面に係合するよう係止爪62にも斜面が設けられている。 [0070] Incidentally, the tip-side substrate side surface of the groove 61 are inclined surface is also provided on the engaging pawl 62 to engage the inclined surface and forms a slope.

【0071】また、突き当て部33と溝部61との距離より支持部22から係止爪62の距離を短く設定してある。 [0071] Also, there is set a short distance of the locking claw 62 than the distance between the abutment portion 33 and the groove 61 from the support portion 22.

【0072】その他の構成は第1実施例と同じである。 [0072] Other configuration is the same as in the first embodiment.

【0073】(作用)このように構成された本実施例においては、先端構成部8を先端カバー部材14に装着する際には、図29に示すように、突き当て部33が係止爪62を径方向に押し上げ挿入され溝部61に係止されることで装着完となる。 [0073] (Operation) In the present embodiment having such a configuration, when mounting the distal end construction part 8 to the tip cover member 14, as shown in FIG. 29, abutting portion 33 engaging pawl 62 the mounting completed with locked is that in the inserted groove 61 pushed in the radial direction.

【0074】装着が完了すると、支持部22から係止爪62までの距離は突き当て部33と溝部71までの距離より短いため、係止爪62周辺は弾性変形した状態で係止爪62と溝部61が係合する。 [0074] When installed is complete, shorter than the distance from the support portion 22 to the abutment portion 33 and the groove 71 distance to the locking claw 62, the locking claw 62 near the engaging pawl 62 in an elastically deformed state the groove 61 is engaged.

【0075】この場合、弾性変形による弾性力により係止爪62が溝部61を、図30の矢印の方向に押圧する。 [0075] In this case, the engaging pawl 62 by the elastic force by the elastic deformation of the groove 61 is pressed in the direction of the arrow in FIG. 30. すると、先端構成部8は軸方向先端側を径方向に押圧され、突き当て部33は支持部22と、また先端構成部8の径方向中心側の面と先端カバー部材14の径方向中心側の面は密着状態となる。 Then, the distal end construction part 8 is pressed in the axial direction distal end side in the radial direction, abutting portion 33 and the support 22, also radial center side of the radial center side of the face and the distal-end cover member 14 of the distal end construction part 8 plane becomes a state of adhesion.

【0076】その他の作用は第1実施例と同じである。 [0076] Other operations are the same as the first embodiment.

【0077】(効果)従って、本実施例では、先端構成部8と先端カバー部材14が送気送水ノズル25側で密着することにより、両者に狭間が無くなり送気送水時の障害となる部分が減り、第1実施例と同様に、安定した送気送水が行える効果がある。 [0077] Therefore (Effect) In the present embodiment, by the distal end construction part 8 and the front cover member 14 comes into close contact with air and water supply nozzle 25 side, failure to become part of the air and water supply when there is no interstice in both reduced, as in the first embodiment, there is an effect that enables stable air water.

【0078】次に、第6実施例について説明する。 Next, a description will be given of a sixth embodiment. 図3 Figure 3
1は本発明の第6実施例に係る先端カバー部材の構成を示す断面図である。 1 is a sectional view showing the configuration of the distal end cover member according to a sixth embodiment of the present invention. 第6実施例は第5実施例とほとんど同じであるので、異なる構成のみ説明し、同一の構成には同じ符号を付け説明は省略する。 Since the sixth embodiment is almost the same as the fifth embodiment, described only different configurations, the description with the same reference numerals are given to the same configuration is omitted.

【0079】(構成)本実施例では、第5実施例と同様に、先端構成部8には溝部61を有し、その溝部61と係合するよう係止爪62が先端カバー部材14に設けられている。 [0079] (Configuration) In this embodiment, like the fifth embodiment, has a groove 61 in the distal end construction part 8, the engaging claw 62 to engage the groove portion 61 is provided on the distal end cover member 14 It is. この場合、突き当て部33と支持部22の当接及び係止爪62と溝部61の係合により、先端構成部8と先端カバー部材14が位置決めするよう構成されている。 In this case, by the engagement of the abutment and the locking claw 62 and the groove 61 between the abutment portion 33 supporting portion 22, the distal end construction part 8 and the front cover member 14 is configured to position.

【0080】また、先端構成部8の外周面には磁石71 [0080] Further, on the outer peripheral surface of the distal end construction part 8 magnet 71
が設けてあり、先端カバー部材14にはその磁石71に対向する位置に磁石71と引力を発する向きに向けた磁石72が設けてある。 Is is provided with, the distal end cover member 14 are magnets 72 toward the direction that emits magnet 71 and the attraction at a position opposite to the magnet 71 is provided.

【0081】その他の構成は第5実施例と同じである。 [0081] Other configurations are the same as that of the fifth embodiment.

【0082】(作用)本実施例においては、先端構成部8が先端カバー部材14に挿入されると係止爪62と溝部61に係合する。 [0082] (Operation) In this embodiment, the distal end construction part 8 is engaged with and inserted into the distal end cover member 14 engaging pawl 62 and the groove 61. その際軸方向先端側には突き当て部33と支持部22の当接により移動が規制され、先端構成部8と先端カバー部材14の位置決めされ、先端構成部8と先端カバー部材14の固定が完了する。 Its in Saijiku forward end side is restricted movement by the abutment of the support portion 22 and the abutment portion 33, is positioned in the distal end construction part 8 and the front cover member 14, it is fixed in the distal end construction part 8 and the distal end cover member 14 completed. また、磁石71、72の磁力による引力で先端構成部8と先端カバー部材14が密着する。 The tip structure portion 8 and the front cover member 14 in attraction by the magnetic force of the magnet 71 and 72 are in close contact.

【0083】その他の作用、効果は第5実施例と同じである。 [0083] Other operations and advantages are the same as that of the fifth embodiment.

【0084】なお、磁石71、72による磁力でなくとも、粘着性のある物質を磁石の代わりに設けても同様の効果は得られる。 [0084] Incidentally, even without a magnetic force generated by the magnet 71 and 72, the same effect can be provided to a substance that is sticky in place of the magnet is obtained.

【0085】次に、第7実施例について説明する。 Next, a description will be given of a seventh embodiment. 図3 Figure 3
2は本発明の第7実施例に係る先端カバー部材の構成を示す断面図である。 2 is a sectional view showing the configuration of the distal end cover member according to the seventh embodiment of the present invention. 第7実施例は第5実施例とほとんど同じであるので、異なる構成のみ説明し、同一の構成には同じ符号を付け説明は省略する。 Since the seventh embodiment is substantially the same as that of the fifth embodiment, described only different configurations, the description with the same reference numerals are given to the same configuration is omitted.

【0086】(構成)本実施例では、第5実施例の係止爪62及び溝部61の代わりに、先端カバー部材14には、下穴貫通しためねじ部81が設けてあり、また先端カバー部材14の外周に設けられた外皮30の前記めねじ部81に対向する部分には貫通穴82が設けてあり、 [0086] In (Configuration) In this embodiment, in place of the locking claw 62 and the groove 61 of the fifth embodiment, the distal end cover member 14, is provided with a female screw portion 81 through the prepared hole and the distal end cover the portion opposed to the female screw portion 81 of the outer skin 30 provided on the outer periphery of the member 14 is provided with a through hole 82,
そのめねじ部81、貫通穴82に対し外部から固定ビス83を取り付けてある。 Its female screw portion 81, is attached a fixing screw 83 from the outside to the through holes 82. この固定ビス83のねじ部長さは、外皮30の厚さ、先端カバー部材14の厚さ、先端カバー部材14と先端構成部8の狭間を合わせた長さよりも長いものとなっている。 Thread portion length of the fixing screws 83, the thickness of the outer skin 30, the thickness of the distal end cover member 14, is longer than the length of the combined Between distal cover member 14 and the distal end construction part 8.

【0087】その他の構成は第5実施例と同じである。 [0087] Other configurations are the same as that of the fifth embodiment.

【0088】(作用)本実施例においては、先端構成部8と先端カバー部材14に挿入し、突き当て部33が支持部22に当接し、先端構成部8の先端面と先端カバー部材14の先端面との位置決めをした後、外部から固定ビス83を締めることにより固定ビス83が先端構成部8を径方向中心側に押圧し、先端カバー部材14と密着状態にすることで両者を固定し、固定完了となる。 [0088] In (act) present example, by inserting the distal end construction part 8 and the front cover member 14, the abutting portion 33 abuts the supporting portion 22, the distal end surface of the distal end construction part 8 and of the distal end cover member 14 after positioning the distal end surface presses the fixing screw 83 is the distal end construction part 8 in the radial direction center side by tightening the fixing screw 83 from the outside, both fixed by the close contact between the tip cover member 14 , a fixed completion.

【0089】その他の作用、効果は第5実施例と同じである。 [0089] Other operations and advantages are the same as that of the fifth embodiment.

【0090】次に、第8実施例について説明する。 Next, it will be described an eighth embodiment. 図3 Figure 3
3は本発明の第8実施例に係る先端カバー部材の構成を示す断面図である。 3 is a sectional view showing the configuration of the distal end cover member according to the eighth embodiment of the present invention. 第8実施例は第5実施例とほとんど同じであるので、異なる構成のみ説明し、同一の構成には同じ符号を付け説明は省略する。 Since the eighth embodiment is substantially the same as that of the fifth embodiment, described only different configurations, the description with the same reference numerals are given to the same configuration is omitted.

【0091】(構成)本実施例では、先端カバー部材8 [0091] (Configuration) In this embodiment, the distal end cover member 8
の先端面の外周全周部分に切欠部91を設け、その切欠部91には先端構成部8と先端カバー部材14を外挿するOリング92が備えてある。 A notch 91 in the entire outer periphery portion of the distal end surface provided in, on the notch 91 are provided with a distal end construction part 8 and the front cover member 14 is extrapolated O-ring 92.

【0092】その他の構成は第5実施例と同じである。 [0092] Other configurations are the same as that of the fifth embodiment.

【0093】(作用)本実施例においては、係止爪62 [0093] (Operation) In the present embodiment, the locking claw 62
と溝部61との係合と支持部22と突き当て部33の当接により、先端構成部8と先端カバー部材14の固定が完了する。 And the engagement and abutment of the support portion 22 and the abutment portion 33 of the groove 61, the fixation of the distal end construction part 8 and the front cover member 14 is completed. その後Oリング92を切欠部91に外挿することで、Oリング92は先端構成部8と先端カバー部材14とをその弾性力で押圧し両者を密着させる。 Thereafter O By extrapolating the ring 92 in the notch 91, O-ring 92 is brought into close contact with each other by pressing a distal end configuration portion 8 and the front cover member 14 with its elastic force.

【0094】その他の作用、効果は第5実施例と同じである。 [0094] Other operations and advantages are the same as that of the fifth embodiment.

【0095】なお、本発明は上記各実施例に限らず、各実施例間で発明の要旨を逸脱しない範囲で組み換え可能であることは言うまでもない。 [0095] The present invention is not limited to the above embodiments but can naturally be recombinant without departing from the scope of the invention among the examples.

【0096】[付記] (付記項1) 観察窓と照明窓とを先端の先端構成部に有するカバー用内視鏡と、前記カバー用内視鏡の挿入部を外挿し、先端には前記観察窓と前記照明窓とに対向する部分に開口部を有し、先端面には送気送水ノズルを備えた先端カバー部材を有する内視鏡カバーとからなるカバー式内視鏡において、前記先端構成部の先端面位置と前記送気送水ノズルの口元高さ位置とが挿入方向に対して同位置か、あるいは前記送気送水ノズルの口元高さ位置の方が先端に位置することを特徴とするカバー式内視鏡。 [0096] [Appendix] (Note 1) extrapolated observation window and the cover vision mirror and an illumination window at the distal end configuration portion of the distal end, the insertion portion of the endoscope for the cover, said viewing the tip window and has an opening in a portion opposed to said illuminating window, in the cover-type endoscope comprising the endoscope cover the tip face having a tip cover member having a gas-feeding and water-feeding nozzle, the tip configuration part tip face position and the mouth height of the air and water supply nozzle or the same position with respect to the insertion direction of, or toward the mouth height of the air and water supply nozzle, characterized in that positioned at the front end cover type endoscope.

【0097】(付記項2) 前記先端構成部の先端面と前記先端カバー部材の先端面との挿入方向位置を同一面、あるいは段差を構成する規制手段を備えたことを特徴とする付記項1に記載のカバー式内視鏡。 [0097] Additional Item characterized by comprising a regulating unit which constitutes (Note 2) the distal end surface of the distal end construction part flush the insertion direction position of the distal end surface of the distal end cover member, or a step 1 cover type endoscope according to.

【0098】(付記項3) 前記規制手段は、前記先端構成部と前記先端カバー部材との間に設けた挿入方向の当接面と、周方向の少なくとも1つの凹凸部であることを特徴とする付記項2に記載のカバー式内視鏡。 [0098] (Note 3) the regulating means, said the abutment surface in the insertion direction which is provided between the distal end construction part and the distal cover member, at least one uneven portion in the circumferential direction cover endoscope according to Additional Item 2.

【0099】(付記項4) 前記規制手段は、前記先端構成部と前記送気送水ノズルの一部であることを特徴とする付記項2に記載のカバー式内視鏡。 [0099] (Note 4) the regulating means, the cover-type endoscope according to item 2, wherein said distal end construction part which is a part of the air and water supply nozzle.

【0100】(付記項5) 観察窓と照明窓とを先端の先端構成部に有するカバー用内視鏡と、前記カバー用内視鏡の挿入部を外挿し、先端には前記観察窓と前記照明窓とに対向する部分に開口部を有し、先端面には送気送水ノズルを備えた先端カバー部材を有する内視鏡カバーとからなるカバー式内視鏡において、前記先端カバー部材の内部の少なくとも一部で、前記先端構成部が密着していることを特徴とするカバー式内視鏡。 [0100] The (Additional Item 5) observation window and the endoscope cover and an illumination window at the distal end configuration portion of the tip, extrapolated insertion portion of the endoscope for the cover, the tip and the observation window It has an opening in a portion opposed to the illumination window in the cover-type endoscope comprising the endoscope cover the tip face having a tip cover member having a gas-feeding and water-feeding nozzle, the interior of the distal cover member at least a portion in said cover type endoscope, wherein a distal end construction part is in close contact of the.

【0101】(付記項6) 観察窓と照明窓とを先端の先端構成部に有するカバー用内視鏡と、前記カバー用内視鏡の挿入部を外挿し、先端には前記観察窓と前記照明窓とに対向する部分に開口部を有し、先端面には送気送水ノズルを備えた先端カバー部材を有する内視鏡カバーとからなるカバー式内視鏡において、前記先端カバー部材の内部の少なくとも一部で、前記先端構成部が前記送気送水ノズル側で密着していることを特徴とするカバー式内視鏡。 [0102] The (Note 6) viewing window and the endoscope cover and an illumination window at the distal end configuration portion of the tip, extrapolated insertion portion of the endoscope for the cover, the tip and the observation window It has an opening in a portion opposed to the illumination window in the cover-type endoscope comprising the endoscope cover the tip face having a tip cover member having a gas-feeding and water-feeding nozzle, the interior of the distal cover member at least a portion, the cover-type endoscope, wherein the distal end construction part is in close contact with the air and water supply nozzle side.

【0102】(付記項7) 観察窓と照明窓を先端部の先端構成部に有するカバー用内視鏡と、前記カバー用内視鏡の挿入部を外挿し、先端には前記観察窓と照明窓と対向する部分に開口部を設け、先端面には送気、送水ノズル備えた先端カバー部材を有する内視鏡カバーとの組み合わせから構成されるカバー式内視鏡において、前記先端カバー部材上の送気送水ノズルから先端構成部上の観察窓に至る部分において、先端カバー部材と先端構成部とに段差を設け、前記段差に合う送気送水ノズルを設けたことを特徴とするカバー式内視鏡。 [0102] Lighting (Note 7) viewing window and the endoscope cover having an illumination window at the distal end configuration portion of the distal end portion, extrapolating the insertion portion of the endoscope for the cover, the tip and the observation window an opening provided in the window portion opposite to, air in the front end surface, the cover-type endoscope consists of a combination of an endoscope cover having a front cover member having water supply nozzle, the tip cover member on in portion from the air and water supply nozzle to the observation window on the distal end construction part, a step is provided on the distal end cover member and the distal end construction part, the cover type, characterized in that a gas-feeding and water-feeding nozzle to suit the step endoscope.

【0103】(付記項8) 前記先端カバー部材と前記先端構成部から成る前記段差は、前記先端構成部の方が内側になるよう規制したことを特徴とする付記項7に記載のカバー式内視鏡。 [0103] the step consisting of (Note 8) wherein the distal end cover member and the distal end construction part, the cover-type according to item 7, characterized in that towards the distal end construction part is restricted so that the inside endoscope.

【0104】(付記項9) 前記先端カバー部材と前記先端構成部から成る前記段差は、前記先端構成部の方が外側になるよう規制したことを特徴とする付記項7に記載のカバー式内視鏡。 [0104] the step consisting of (Note 9) the distal end cover member and the distal end construction part, the cover-type according to item 7, characterized in that towards the distal end construction part is regulated to be on the outside endoscope.

【0105】(付記項10) 前記送気送水ノズルの送気送水角度が0°〜10°であることを特徴とする付記項8に記載のカバー式内視鏡。 [0105] (Note 10) covers endoscope according to Additional Item 8, wherein the air water angle of the air and water supply nozzle is 0 ° to 10 °.

【0106】(付記項11) 前記送気送水ノズルの送気送水角度が15°であることを特徴とする付記項9に記載のカバー式内視鏡。 [0106] (Note 11) wherein the cover endoscope according to Additional Item 9, wherein the air water angle of the air water nozzle is 15 °.

【0107】(付記項12) 前記先端構成部の先端面の位置を規制する規制手段を備え、前記規制手段は、前記先端カバー部材の前記開口部に設けた支持部と前記先端構成部の外周に設けた突き当て部との当接から成ることを特徴とする付記項7に記載のカバー式内視鏡。 [0107] (Note 12) comprising a regulating means for regulating the position of the distal end surface of the distal end construction part, wherein the regulating means, the outer periphery of said support portion provided in the opening of the distal end cover member and the distal end construction part cover endoscope according to Additional Item 7, characterized in that it consists of contacting the abutment portion provided on.

【0108】(付記項13) 前記支持部が前記開口部全周にあることを特徴とする付記項12に記載のカバー式内視鏡。 [0108] (Note 13) covers endoscope according to Additional Item 12, wherein said support portion is characterized in that the entire circumference the opening.

【0109】(付記項14) 前記支持部が前記開口部の一部分に設けたことを特徴とする付記項12に記載のカバー式内視鏡。 [0109] (Note 14) covers endoscope according to Additional Item 12, wherein said support portion is characterized by providing a portion of the opening.

【0110】(付記項15) 前記支持部を送気送水時に水もしくは気体が通る部分以外の部分に設けたことを特徴とする付記項14に記載のカバー式内視鏡。 [0110] (Note 15) covers endoscope according to Additional Item 14, characterized in that provided in a portion other than the supporting portion through which water or gas at the air water a.

【0111】(付記項16) 前記送気送水ノズルを前記開口部上に覆い被せた状態で設けることにより、前記送気送水ノズルが前記先端構成部の位置を規制する前記支持部となることを特徴とする付記項12に記載のカバー式内視鏡。 [0111] By providing a state where the (Note 16) said air and water supply nozzle overmolded onto said opening, said air and water supply nozzle is the supporting portion for regulating a position of the distal end construction part cover endoscope according to Additional Item 12, wherein.

【0112】(付記項17) 前記先端カバー部材と前記先端構成部とから成る前記段差において、前記先端構成部の方が常に前記開口部より内側となるようにしたことを特徴とする付記項8に記載のカバー式内視鏡。 [0112] (Note 17) wherein in said step comprising a distal cover member and the distal end construction part, according to Note, characterized in that towards the distal end construction part is always set to be inner than the opening 8 cover type endoscope according to.

【0113】(付記項18) 前記先端カバー部材と前記先端構成部とから成る前記段差において、前記先端構成部の方が常に前記開口部より外側となるようにしたことを特徴とする付記項9に記載のカバー式内視鏡。 [0113] (Note 18) wherein in said step comprising a distal cover member and the distal end construction part, according to Note, characterized in that towards the distal end construction part is always set to be outside the said opening 9 cover type endoscope according to.

【0114】(付記項19) 前記先端カバー部材と前記先端構成部から成る前記段差は、前記先端構成部の方が内側に0.5mm未満となるよう規制することを特徴とする付記項8、12、17のいずれか1つに記載のカバー式内視鏡。 [0114] (Note 19) the step consisting of the tip cover member and the distal end construction part, according to Note 8, characterized in that towards the distal end construction part to regulate so as to be less than 0.5mm on the inside, cover endoscope according to any one of 12 and 17.

【0115】(付記項20) 前記先端カバー部材と前記先端構成部から成る前記段差は、前記先端構成部の方が外側に0.5mm未満となるよう規制することを特徴とする付記項8、12、17のいずれか1つに記載のカバー式内視鏡。 [0115] (Note 20) the step consisting of the tip cover member and the distal end construction part, according to Note 8, characterized in that towards the distal end construction part to regulate so as to be less than 0.5mm outside, cover endoscope according to any one of 12 and 17.

【0116】(付記項21) 前記先端カバー部材の前記観察窓と前記照明窓と対向する部分は、共通の1つの前記開口部によって開口していることを特徴とする付記項7に記載のカバー式内視鏡。 [0116] The observation window and the illumination window and the opposite portions of the (Additional Item 21) The tip cover member, the cover according to item 7, characterized in that opened by a common one of said openings the expression endoscope.

【0117】(付記項22) 前記送気送水ノズルが複数の場合、前記観察窓から遠い方を送水用としたことを特徴とする付記項7に記載のカバー式内視鏡。 [0117] (Note 22) if air and water supply nozzle of the plurality of cover-type endoscope according to item 7, characterized in that a for water the farther from the observation window.

【0118】(付記項23) 前記先端カバー部材において、前記先端カバー部材の外周面に水切れが良いよう切欠部を設けたことを特徴とする付記項7に記載のカバー式内視鏡。 [0118] In (Additional Item 23) the distal end cover member, the cover-type endoscope according to item 7, characterized in that a notch so drainage is good on the outer peripheral surface of the distal end cover member.

【0119】(付記項24) 前記切欠部は、前記送気送水ノズルの下流側に設けたことを特徴とする付記項2 [0119] The (Additional Item 24) The cutout portion, according to Note 2, characterized in that provided downstream of the air and water supply nozzle
3に記載のカバー式内視鏡。 Cover type endoscope according to 3.

【0120】(付記項25) 前記先端カバー部材において、前記先端カバー部材上で水切れが良いよう前記先端カバー部材を前記送気送水ノズルの下流側には設けないことを特徴とする付記項7に記載のカバー式内視鏡。 [0120] In (Additional Item 25) the distal end cover member, to item 7, characterized in that not provided with the distal end cover member as drainage is good in the distal cover member on the downstream side of the air and water supply nozzle cover endoscope according.

【0121】(付記項26)観察窓と照明窓を先端部の先端構成部に有するカバー用内視鏡と、前記カバー用内視鏡の挿入部を外挿し、先端には前記観察窓と照明窓と対向する部分に開口部を設け先端面には送気、送水ノズルを備えた先端カバー部材を有する内視鏡カバーとの組み合わせから構成されるカバー式内視鏡において、前記先端構成部と前記先端カバー部材とが先端面で送気送水の妨げにならないよう前記送気送水ノズル側に於いて密着していることを特徴としたカバー式内視鏡。 [0121] Lighting (Note 26) viewing window and the endoscope cover having an illumination window at the distal end configuration portion of the distal end portion, extrapolating the insertion portion of the endoscope for the cover, the tip and the observation window air to the distal end face an opening provided in the window portion facing the, in the cover-type endoscope consists of a combination of an endoscope cover having a front cover member having a water supply nozzle, and the distal end construction part cover endoscope which is characterized in that said distal end cover member is in close contact at the air and water supply nozzle side so as not to interfere with the air water at the tip surface.

【0122】(付記項27) 前記先端構成部と前記先端カバー部材とが前記先端カバー部材の弾性力により密着していることを特徴とする付記項26に記載のカバー式内視鏡。 [0122] (Note 27) covers endoscope according to Additional Item 26, wherein the distal end construction part and said end cover member is characterized in that in close contact by the elastic force of the distal end cover member.

【0123】(付記項28) 前記先端構成部と前記先端カバー部材とが外部からの係止手段により密着していることを特徴とする付記項26に記載のカバー式内視鏡。 [0123] (Note 28) said cover type endoscope according to Additional Item 26 of the distal end construction part and said end cover member is characterized in that in close contact by the locking means from the outside.

【0124】(付記項29) 外部から前記先端構成部5を弾性部材で締め付けることにより、前記先端構成部と前記先端カバー部材が密着していることを特徴とする付記項28に記載のカバー式内視鏡。 [0124] By tightening the distal end construction part 5 (Note 29) outside the elastic member, the cover formula according to item 28, wherein the distal cover member and the distal end construction part is in close contact Endoscope.

【0125】(付記項30) 外部から前記先端カバー部材と前記先端構成部をビス止めすることにより両者が密着していることを特徴とする付記項28に記載のカバー式内視鏡。 [0125] (Note 30) covers endoscope according to Additional Item 28, characterized in that they are in close contact by screwing the distal end construction part and the distal cover member from the outside.

【0126】(付記項31) 前記先端構成部と前記先端カバー部材が磁力により密着していることを特徴とする付記項27に記載のカバー式内視鏡。 [0126] (Note 31) covers endoscope according to Additional Item 27 of the distal end cover member and the distal end construction part is equal to or in close contact by magnetic force.

【0127】(付記項32) 前記先端構成部と前記先端カバー部材が粘着力により密着していることを特徴とする付記項27に記載のカバー式内視鏡。 [0127] (Note 32) covers endoscope according to Additional Item 27, wherein the distal end construction part and the distal cover member is characterized in that in close contact by adhesion.

【0128】(付記項33) 前記弾性部材がOリングから成ることを特徴とする付記項29に記載のカバー式内視鏡。 [0128] (Note 33) covers endoscope according to Additional Item 29, wherein the elastic member is characterized in that it consists of an O-ring.

【0129】 [0129]

【発明の効果】以上説明したように本発明のカバー式内視鏡によれば、先端構成部の先端面位置と送気送水ノズルの口元高さ位置とが挿入方向に対して同位置か、あるいは送気送水ノズルの口元高さ位置の方が先端に位置させているので、内視鏡カバーとカバー用内視鏡の固定時の固定方法によるがたつきや、製造時の部品の寸法のばらつきにより先端構成部の先端面の位置が変動しても、 According As described above, according to the present invention to cover type endoscope of the present invention, or the same position and the mouth height of the air and water supply nozzle and the tip surface position of the distal end construction part to the insertion direction, or so toward the mouth height of the air and water supply nozzles are is positioned at the distal end, rattling or endoscopic cover and fixed at the fixing method of the cover endoscope, in manufacturing parts of dimensions be varied the position of the distal end surface of the distal end construction part due to the dispersion,
送気、送水等洗滌に不具合が生じることがないという効果がある。 Air, there is an effect that does not occur inconvenience in water or the like washing.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の第1実施例に係るカバー式内視鏡の構成を示す全体図 Overall view showing a configuration of a cover-type endoscope according to the first embodiment of the present invention; FIG

【図2】図1の先端カバー部材の先端面の構成を示す構成図 Figure 2 is a configuration diagram showing a configuration of a distal end surface of the distal end cover member of Figure 1

【図3】図2の送気送水ノズルの形状を示す断面図 3 is a cross-sectional view showing the shape of the gas-feeding and water-feeding nozzle of FIG. 2

【図4】カバー用内視鏡を装着した第1の状態における図2のA−A線断面を示す断面図 Cross-sectional view showing the A-A line cross section of Figure 2 in a first state of mounting the [4] the cover endoscope

【図5】カバー用内視鏡を装着した第2の状態における図2のA−A線断面を示す断面図 5 is a sectional view showing the A-A line cross section of Figure 2 in a second state of mounting the inside cover endoscope

【図6】図4に示した第1の状態での送気送水ノズルの作用を説明する説明図 Figure 6 is an explanatory diagram for explaining the action of the air and water supply nozzle in the first state shown in FIG. 4

【図7】図5に示した第2の状態での送気送水ノズルの作用を説明する説明図 Figure 7 is an explanatory view for explaining the action of the air and water supply nozzle in the second state shown in FIG. 5

【図8】本発明の第2実施例に係る先端カバー部材の先端面の構成を示す構成図 Figure 8 is a configuration diagram showing a configuration of a distal end surface of the distal end cover member according to a second embodiment of the present invention

【図9】カバー用内視鏡を装着した図8のB−B線断面を示す断面図 Figure 9 is a sectional view showing a sectional view taken along line B-B of Figure 8 fitted with the cover endoscope

【図10】図8の送気送水ノズルの形状を示す断面図 Figure 10 is a cross-sectional view showing a shape of a gas-feeding and water-feeding nozzle of FIG. 8

【図11】カバー用内視鏡を装着した第1の状態における図8のA−A線断面を示す断面図 Figure 11 is a sectional view showing a line A-A section of FIG. 8 in the first state of mounting the inside cover endoscope

【図12】カバー用内視鏡を装着した第2の状態における図8のA−A線断面を示す断面図 Figure 12 is a cross-sectional view showing a line A-A section of FIG. 8 in a second state of mounting the inside cover endoscope

【図13】図11に示した第1の状態での送気送水ノズルの作用を説明する説明図 Figure 13 is an explanatory diagram for explaining the action of the air and water supply nozzle in the first state shown in FIG. 11

【図14】図12に示した第2の状態での送気送水ノズルの作用を説明する説明図 Figure 14 is an explanatory diagram for explaining the action of the air and water supply nozzle in the second state shown in FIG. 12

【図15】本発明の第3実施例に係る先端カバー部材の先端面の構成を示す構成図 Figure 15 is a configuration diagram showing a configuration of a distal end surface of the distal end cover member according to a third embodiment of the present invention

【図16】カバー用内視鏡を装着した図15のC−C線断面を示す断面図 Figure 16 is a sectional view showing a sectional view taken along line C-C of Figure 15 fitted with endoscope cover

【図17】カバー用内視鏡を装着した第1の状態における図15のA−A線断面を示す断面図 Figure 17 is a sectional view showing a line A-A section of FIG. 15 in the first state of mounting the inside cover endoscope

【図18】カバー用内視鏡を装着した第2の状態における図15のA−A線断面を示す断面図 Figure 18 is a sectional view showing a line A-A section of FIG. 15 in a second state of mounting the inside cover endoscope

【図19】図18に示した第2の状態での送気送水ノズルの作用を説明する説明図 Figure 19 is an explanatory view for explaining the action of the air and water supply nozzle in the second state shown in FIG. 18

【図20】図17に示した第1の状態での送気送水ノズルの作用を説明する説明図 Figure 20 is an explanatory diagram for explaining the action of the air and water supply nozzle in the first state shown in FIG. 17

【図21】本発明の第4実施例に係る先端カバー部材の先端面の構成を示す構成図 Figure 21 is a configuration diagram showing a configuration of a distal end surface of the distal end cover member according to a fourth embodiment of the present invention

【図22】カバー用内視鏡を装着した図21のA−A線断面を示す断面図 Figure 22 is a sectional view showing a line A-A cross section of FIG. 21 equipped with endoscope cover

【図23】カバー用内視鏡の装着開始状態における図2 [23] Figure of mounting start state in cover endoscope 2
1のA−A線断面を示す断面図 Sectional view showing a line A-A cross section

【図24】カバー用内視鏡の装着終了状態における図2 [24] Figure of mounting completion state of the cover endoscope 2
1のA−A線断面を示す断面図 Sectional view showing a line A-A cross section

【図25】カバー用内視鏡を装着した先端カバー部材の第1の変形例の図21におけるA−A線断面を示す断面図 Figure 25 is a sectional view showing a line A-A cross section in FIG. 21 of the first modification of the distal end cover member mounted to the cover endoscope

【図26】カバー用内視鏡を装着した先端カバー部材の第2の変形例である側視型の先端カバー部材の構成を示す構成図 Figure 26 is a configuration diagram showing a configuration of a side-view type of the distal end cover member is a second modification of the distal end cover member mounted to the cover endoscope

【図27】図26のD−D線断面を示す断面図 Figure 27 is a sectional view showing a sectional view taken along line D-D in FIG. 26

【図28】本発明の第5実施例に係る先端カバー部材の構成を示す断面図 Figure 28 is a sectional view showing a configuration of the distal end cover member according to a fifth embodiment of the present invention

【図29】図28の先端カバー部材へのカバー用内視鏡の装着状態を示す断面図 Figure 29 is a sectional view showing a mounting state of the cover endoscope to the distal end cover member of Figure 28

【図30】図28の溝部及び係止爪の作用を説明する拡大図 Figure 30 is an enlarged view for explaining the action of the groove portion and the engaging claw of FIG. 28

【図31】本発明の第6実施例に係る先端カバー部材の構成を示す断面図 Figure 31 is a sectional view showing a configuration of the distal end cover member according to a sixth embodiment of the present invention

【図32】本発明の第7実施例に係る先端カバー部材の構成を示す断面図 Figure 32 is a sectional view showing a configuration of the distal end cover member according to the seventh embodiment of the present invention

【図33】本発明の第8実施例に係る先端カバー部材の構成を示す断面図 Figure 33 is a sectional view showing a configuration of the distal end cover member according to the eighth embodiment of the present invention

【符号の説明】 DESCRIPTION OF SYMBOLS

2…カバー式内視鏡 3…カバー用内視鏡 4…内視鏡カバー 5…挿入部 6…操作部 7…ユニバーサルコード 8…先端構成部 11…挿入部カバー部 12…操作部カバー 13…ユニバーサルコードカバー 14…先端カバー部材 21…開口部 22,22a…支持部 23…観察窓 24…照明窓 25…送気送水ノズル 26,91…切欠部 27…処置具チャンネル 27a…処置具チャンネル開口部 30…外皮 31,61…溝部 32,62…係止爪 33…突き当て部 34…対物レンズ系 35…撮像部 36…撮像ケーブル 41…水流 51…固定ピン 52…穴部 55…導通口 56…吸引チューブ 71,72…磁石 81…めねじ部 82…貫通穴 83…固定ビス 92…Oリング 2 ... cover-type endoscope 3 ... endoscope cover 4 ... endoscope cover 5 ... insertion portion 6 ... operating portion 7 ... universal cord 8 ... distal end construction part 11 ... insertion portion cover 12 ... operation cover 13 ... universal cord cover 14 ... front cover member 21 ... opening 22, 22a ... supporting portion 23 ... observation window 24 ... illumination window 25 ... gas-feeding and water-feeding nozzle 26,91 ... notch 27 ... treatment instrument channel 27a ... treatment instrument channel opening 30 ... outer skin 31, 61 ... groove 32, 62 ... locking claw 33 ... abutting portion 34 ... objective lens system 35 ... imaging unit 36 ​​... imaging cable 41 ... water 51 ... fixing pins 52 ... hole 55 ... conducting port 56 ... suction tube 71, 72 ... magnets 81 ... female screw portion 82 ... through hole 83 ... fixing screws 92 ... O-ring

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 観察窓と照明窓とを先端の先端構成部に有するカバー用内視鏡と、 前記カバー用内視鏡の挿入部を外挿し、先端には前記観察窓と前記照明窓とに対向する部分に開口部を有し、先端面には送気送水ノズルを備えた先端カバー部材を有する内視鏡カバーとからなるカバー式内視鏡において、 前記先端構成部の先端面位置と前記送気送水ノズルの口元高さ位置とが挿入方向に対して同位置か、あるいは前記送気送水ノズルの口元高さ位置の方が先端に位置することを特徴とするカバー式内視鏡。 And 1. A endoscope cover having an observation window and the illumination window at the distal end configuration portion of the tip, extrapolated insertion portion of the endoscope for the cover, and the illumination window and the observation window at the distal end has an opening in a portion facing, the front end surface in the cover-type endoscope comprising the endoscope cover having a front cover member having a gas-feeding and water-feeding nozzle, a distal end surface position of the distal end construction part the air or the mouth height of the water supply nozzle is the same position relative to the insertion direction, or the air and water supply cover type endoscope towards the mouth height of the nozzle is characterized in that positioned at the front end.
JP452095A 1995-01-13 1995-01-13 Cover type endoscope Expired - Fee Related JP3540407B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP452095A JP3540407B2 (en) 1995-01-13 1995-01-13 Cover type endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP452095A JP3540407B2 (en) 1995-01-13 1995-01-13 Cover type endoscope

Publications (2)

Publication Number Publication Date
JPH08191791A true true JPH08191791A (en) 1996-07-30
JP3540407B2 JP3540407B2 (en) 2004-07-07

Family

ID=11586336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP452095A Expired - Fee Related JP3540407B2 (en) 1995-01-13 1995-01-13 Cover type endoscope

Country Status (1)

Country Link
JP (1) JP3540407B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006345887A (en) * 2005-06-13 2006-12-28 Pentax Corp Distal end part of endoscope
US20110112363A1 (en) * 2009-11-11 2011-05-12 Fujifilm Corporation Endoscope
US8016753B2 (en) 2005-06-09 2011-09-13 Hoya Corporation Endoscope
WO2017002588A1 (en) * 2015-06-30 2017-01-05 オリンパス株式会社 Insertion apparatus and endoscope equipped with insertion apparatus

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
JP5612452B2 (en) * 2010-12-08 2014-10-22 富士フイルム株式会社 Endoscope

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8016753B2 (en) 2005-06-09 2011-09-13 Hoya Corporation Endoscope
JP2006345887A (en) * 2005-06-13 2006-12-28 Pentax Corp Distal end part of endoscope
JP4745725B2 (en) * 2005-06-13 2011-08-10 Hoya株式会社 Distal end portion of the endoscope
US20110112363A1 (en) * 2009-11-11 2011-05-12 Fujifilm Corporation Endoscope
JP2011120863A (en) * 2009-11-11 2011-06-23 Fujifilm Corp Endoscope
WO2017002588A1 (en) * 2015-06-30 2017-01-05 オリンパス株式会社 Insertion apparatus and endoscope equipped with insertion apparatus

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