JP2004033587A - Tip of contamination-proof endoscope - Google Patents

Tip of contamination-proof endoscope Download PDF

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Publication number
JP2004033587A
JP2004033587A JP2002196861A JP2002196861A JP2004033587A JP 2004033587 A JP2004033587 A JP 2004033587A JP 2002196861 A JP2002196861 A JP 2002196861A JP 2002196861 A JP2002196861 A JP 2002196861A JP 2004033587 A JP2004033587 A JP 2004033587A
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Japan
Prior art keywords
window
distal end
tip
cover
observation window
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JP2002196861A
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Japanese (ja)
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JP4083484B2 (en
Inventor
Teruo Ouchi
大内　輝雄
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Pentax Corp
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Pentax Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide the tip of a contamination-proof endoscope for preventing illuminating light emitted from an illuminating window from leaking through a space between the back of a covering lid and the surface of an insert part into an observation window to obtain a good endoscope observation image without ghost and flare. <P>SOLUTION: In the tip of the contamination-proof endoscope, the illuminating window 4 for emitting the illuminating light and the observation window 3 for taking a light image into an objective optical system are arranged side by side in the tip 2 of the insert part, and an opaque and elastic annular light shielding part 16 is provided on the inner wall surface of the covering lid 10 to surround at least one of a part facing to the illuminating window 4 of the covering lid 10 and a part 13 facing to the observation window 3. The annular light shielding part 16 is brought into pressure contact with the tip face 2a of the insert part. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
この発明は、挿入部が被覆カバーによって被覆された汚染防止型内視鏡の先端部に関する。
【０００２】
【従来の技術】
近年、内視鏡を介しての患者から患者への感染を未然に確実に防止する必要性が高まっている。
【０００３】
その方策として、内視鏡の挿入部に対して被脱自在な水密性の被覆カバーを設けて、内視鏡に被覆カバーを被覆した状態で使用し、使用後にその被覆カバーを新しいものと交換するのが一つの有力な手段である。
【０００４】
そのようにする場合、照明窓と観察窓の各々の表面に面する被覆カバー部分は透明に形成しなければならないが、両窓の表面を連続的な一枚の透明なカバーで被覆すると、照明窓から射出された照明光が被覆カバーの厚みの中で反射を繰り返して観察窓内に入射し、観察視野にゴーストやフレアーが発生してしまう。
【０００５】
そこで、製造コストはかかるが、被覆カバーの照明窓に面する部分と観察窓に面する部分だけを透明に形成して、その他の部分は不透明に形成したものがある（特開平１０−５１７１号等）。そのようにすることにより、照明窓から射出された照明光が被覆カバーの厚みの中で反射を繰り返して観察窓内に入射する現象を防止することができる。
【０００６】
【発明が解決しようとする課題】
しかし、被覆カバーの照明窓に面する部分と観察窓に面する部分だけを透明に形成して、その他の部分を不透明に形成しても、照明窓から射出された照明光が被覆カバーの裏面と挿入部の表面との間で反射を繰り返して観察窓内に入射する現象を防ぐことはできない。
【０００７】
被覆カバーを、照明窓と観察窓の各々の表面を含めて挿入部の先端面全体に完全に密着させることができればそのような現象は発生しないが、製造上の公差等の存在により、照明窓と観察窓の各々の表面を含めて挿入部の先端面全体に光学的に完全に密着させることは困難であり、被覆カバーの裏面と挿入部の表面との間を光路とする漏光によって観察視野にゴーストやフレアーが発生する場合があった。
【０００８】
そこで本発明は、照明窓から射出された照明光が被覆カバーの裏面と挿入部の表面との間を通って観察窓内に漏光せず、ゴーストやフレアーのない良好な内視鏡観察像を得ることができる汚染防止型内視鏡の先端部を提供することを目的とする。
【０００９】
【課題を解決するための手段】
上記の目的を達成するため、本発明の汚染防止型内視鏡の先端部は、照明光を射出する照明窓と対物光学系に光像をとり入れる観察窓とが挿入部の先端に並んで配置され、少なくとも照明窓に面する部分と観察窓に面する部分とが透明に形成された被覆カバーが挿入部に被覆された汚染防止型内視鏡の先端部において、被覆カバーの照明窓に面する部分と観察窓に面する部分の少なくとも一方を囲むように、不透明で弾力性のある環状遮光部を被覆カバーの内壁面に設け、環状遮光部が挿入部の先端面に圧接されるようにしたものである。
【００１０】
なお、環状遮光部を挿入部の先端面に押し当てる状態に被覆カバーを挿入部に対して係止するカバー係止手段が設けられているとよい。
そして、環状遮光部が被覆カバーの内壁面から内方に土手状に突出形成されていてもよく、或いは、照明窓を保持する照明窓保持枠体と観察窓を保持する観察窓保持枠体の少なくとも一方が挿入部の先端面に突出配置されていて、その枠体の先端面に環状遮光部が押し当てられるようにしてもよい。
【００１１】
【発明の実施の形態】
図面を参照して本発明の実施例を説明する。
図１において、１は内視鏡の挿入部可撓管の先端部分であり、その先端に連結された先端部本体２の先端面２ａに、光像を取り入れる観察窓３と照明光を射出する照明窓４とが並んで配置されている。観察窓３にはカバーガラスが嵌め込まれ、照明窓４には表面側が平らな凹レンズが嵌め込まれている。
【００１２】
観察窓３の内側には対物光学系５が配置され、その対物光学系５による被写体の投影位置にイメージガイドファイババンドル６の像入射面（又は固体撮像素子の撮像面）が配置されている。３０は、それらを保持する円筒状の観察窓保持枠体であり、その先端面は先端部本体２の先端面２ａより僅かに突出している。
【００１３】
照明窓４の内側には、ライトガイドファイババンドル７の射出端が配置されている。４０は、それらを保持する円筒状の照明窓保持枠体であり、その先端面は先端部本体２の先端面２ａより先端部本体２内に僅かに潜っている。
【００１４】
１０は、挿入部可撓管１に着脱自在に被覆される被覆カバーであり、挿入部可撓管１を全長にわたって被覆するシリコンゴムチューブ等からなる被覆チューブ１１の先端部分に、先端部本体２を被覆するための例えば塩化ビニル樹脂や柔軟性エポキシ樹脂等のように弾力性のある材料からなる略キャップ状の先端カバー１２が取り付けられている。
【００１５】
先端カバー１２は、遮光性の高い不透明な黒色に形成されており、観察窓３に面する部分と照明窓４に面する部分には、各々透明窓１３，１４が水密に設けられている。
【００１６】
先端部本体２の外周部分に位置する先端カバー１２の後端部の内面部分には係合突起１５が突出形成されており、その係合突起１５が先端部本体２の外周面に形成された円周溝８にクリック係合することにより、先端カバー１２が先端部本体２に係止された状態になる。
【００１７】
係合突起１５は先端カバー１２を弾性変形させることにより円周溝８に対して係脱自在であり、円周溝８に係合突起１５が係合することによって先端カバー１２が後方に引き寄せられるように、即ち透明窓１３，１４が観察窓３と照明窓４側に引き寄せられるように、係合突起１５と円周溝８は軸線方向に若干偏位した位置関係に設けられている。
【００１８】
先端カバー１２には、照明窓４に面する透明窓１４を囲む環状遮光部１６が、先端部本体２の先端面２ａに面する内壁面部分から内方に向かって環状の土手状に突出形成されており、その他の部分では先端部本体２の先端面２ａに対して浮いた状態になっている。
【００１９】
したがって、係合突起１５と円周溝８との係合によって先端カバー１２が後方に引き寄せられた状態になることにより、環状遮光部１６が、照明窓４を全周にわたって囲む位置で先端部本体２の先端面２ａに押し当てられて、そこに弾力的に変形した状態で圧接している。
【００２０】
その結果、照明窓４から射出された照明光が先端カバー１２の裏面と先端部本体２との間を通って観察窓３側に達する現象を、環状遮光部１６で完全に遮って防止することができ、フレアーやゴーストのない良好な内視鏡観察像を得ることができる。
【００２１】
図２は、本発明の第２の実施例を示しており、第１の実施例と同様の環状遮光部１６が、照明窓４に面する透明窓１４を囲む位置ではなく観察窓３に面する透明窓１３を囲む位置に形成されている。
【００２２】
このように構成しても第１の実施例と同様の作用効果を得ることができ、照明窓４に面する透明窓１４を囲む位置と観察窓３に面する透明窓１３を囲む位置の両方に環状遮光部１６を形成してもよい。
【００２３】
図３は、本発明の第３の実施例を示しており、環状遮光部１６が第１の実施例と同様に照明窓４に面する透明窓１４を囲む位置に形成され、観察窓３に面する透明窓１３の裏面が観察窓３の表面に当接している。
【００２４】
また、図４に示される第４の実施例では、さらに照明窓４に面する透明窓１４の裏面も照明窓４の表面に当接している。このように構成すると、環状遮光部１６の潰れ量を予め設定した程度にすることができる。
【００２５】
図５は、本発明の第５の実施例を示しており、環状遮光部１６を突出形成せずに、観察窓３に面する透明窓１３の周囲において、先端部本体２の先端面２ａから突出する観察窓保持枠体３０の先端面に押し当てられる先端カバー１２の裏面自体を環状遮光部１６′にしたものである。
【００２６】
また、図６に示される第６の実施例では、さらに照明窓保持枠体４０も先端部本体２の先端面２ａから突出させて、その先端面にも先端カバー１２の裏面を押し当てるようにしたものである。
【００２７】
このように、観察窓保持枠体３０と照明窓保持枠体４０の少なくとも一方を先端部本体２の先端面２ａから突出させれば、必ずしも環状遮光部１６′を先端カバー１２の内壁面から突出させなくてもよい。
【００２８】
【発明の効果】
本発明によれば、被覆カバーの照明窓に面する部分と観察窓に面する部分の少なくとも一方を囲むように、不透明で弾力性のある環状遮光部を被覆カバーの内面に設け、環状遮光部が挿入部の先端面に圧接されるようにしたことにより、照明窓から射出された照明光が被覆カバーの裏面と挿入部の表面との間を通って観察窓内に漏光せず、ゴーストやフレアーのない良好な内視鏡観察像を得ることができる。
【図面の簡単な説明】
【図１】本発明の第１の実施例の汚染防止型内視鏡の先端部の側面断面図である。
【図２】本発明の第２の実施例の汚染防止型内視鏡の先端部の側面断面図である。
【図３】本発明の第３の実施例の汚染防止型内視鏡の先端部の側面断面図である。
【図４】本発明の第４の実施例の汚染防止型内視鏡の先端部の側面断面図である。
【図５】本発明の第５の実施例の汚染防止型内視鏡の先端部の側面断面図である。
【図６】本発明の第６の実施例の汚染防止型内視鏡の先端部の側面断面図である。
【符号の説明】
１　挿入部可撓管
２　先端部本体
２ａ　先端面
３　観察窓
４　照明窓
８　円周溝（カバー係止手段）
１０　被覆カバー
１２　先端カバー
１３　透明窓（観察窓に面する部分）
１４　透明窓（照明窓に面する部分）
１５　係合突起（カバー係止手段）
１６，１６′　環状遮光部
３０　観察窓保持枠体
４０　照明窓保持枠体[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tip portion of a pollution prevention endoscope in which an insertion portion is covered by a cover.
[0002]
[Prior art]
In recent years, there is an increasing need to reliably prevent infection from patient to patient via an endoscope.
[0003]
As a measure, a watertight covering cover that can be detached from the insertion section of the endoscope is provided, the endoscope is used with the covering cover covered, and the covering cover is replaced with a new one after use Doing so is one powerful means.
[0004]
In such a case, the covering part facing the surface of each of the illumination window and the observation window must be transparent, but if the surfaces of both windows are covered with one continuous transparent cover, the lighting Illumination light emitted from the window repeatedly reflects within the thickness of the covering cover and enters the observation window, causing ghosts and flares in the observation field of view.
[0005]
Therefore, although the manufacturing cost is high, only the portion of the covering cover facing the illumination window and the portion facing the observation window are formed transparent, and the other portions are formed opaque (Japanese Patent Application Laid-Open No. 10-5171). etc). By doing so, it is possible to prevent a phenomenon that the illumination light emitted from the illumination window repeatedly reflects within the thickness of the covering cover and enters the observation window.
[0006]
[Problems to be solved by the invention]
However, even if only the portion of the covering cover facing the illumination window and the portion facing the observation window are formed transparent and the other portions are formed opaque, the illumination light emitted from the illumination window remains on the back surface of the covering cover. It is not possible to prevent a phenomenon that the light is repeatedly reflected between the light source and the surface of the insertion portion and enters the observation window.
[0007]
Such a phenomenon does not occur if the covering cover can be completely adhered to the entire distal end surface of the insertion portion including the surfaces of the illumination window and the observation window. However, due to manufacturing tolerances and the like, the illumination window is not provided. It is difficult to optically and completely adhere to the entire distal end surface of the insertion section, including the surface of the observation window, and the observation field of view due to light leakage between the back surface of the covering cover and the surface of the insertion section. In some cases, ghosts and flares occurred.
[0008]
Therefore, the present invention provides a good endoscope observation image without ghost or flare, because the illumination light emitted from the illumination window does not leak into the observation window through between the back surface of the covering cover and the surface of the insertion portion. It is an object of the present invention to provide a tip of a pollution control type endoscope which can be obtained.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the tip of the contamination-prevention type endoscope of the present invention has an illumination window for emitting illumination light and an observation window for taking a light image into the objective optical system arranged side by side with the tip of the insertion section. At the distal end of the pollution-prevention endoscope in which at least a portion facing the illumination window and a portion facing the observation window are formed transparent, the covering cover has a surface facing the illumination window of the covering cover. An opaque and elastic annular light shielding portion is provided on the inner wall surface of the covering cover so as to surround at least one of the portion facing the observation window and the portion facing the observation window, so that the annular light shielding portion is pressed against the distal end surface of the insertion portion. It was done.
[0010]
It is preferable that a cover locking means is provided for locking the covering cover to the insertion portion in a state where the annular light shielding portion is pressed against the distal end surface of the insertion portion.
The annular light-shielding portion may be formed so as to protrude inward from the inner wall surface of the covering cover in a bank shape, or may be formed of an illumination window holding frame holding the illumination window and an observation window holding frame holding the observation window. At least one may be arranged so as to protrude from the distal end surface of the insertion portion, and the annular light shielding portion may be pressed against the distal end surface of the frame.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a distal end portion of an insertion section flexible tube of an endoscope, and an observation window 3 for taking in a light image and illumination light are emitted to a distal end surface 2a of a distal end portion main body 2 connected to the distal end. The illumination windows 4 are arranged side by side. A cover glass is fitted into the observation window 3, and a concave lens having a flat surface is fitted into the illumination window 4.
[0012]
An objective optical system 5 is arranged inside the observation window 3, and an image incident surface of the image guide fiber bundle 6 (or an imaging surface of the solid-state image sensor) is arranged at a position where the object is projected by the objective optical system 5. Reference numeral 30 denotes a cylindrical observation window holding frame for holding them, and the distal end surface thereof slightly projects from the distal end surface 2a of the distal end portion main body 2.
[0013]
The emission end of the light guide fiber bundle 7 is arranged inside the illumination window 4. Reference numeral 40 denotes a cylindrical illumination window holding frame body for holding them, and the distal end surface is slightly sunk into the distal end main body 2 from the distal end surface 2 a of the distal end main body 2.
[0014]
Reference numeral 10 denotes a covering cover which is detachably covered on the insertion section flexible tube 1. The covering cover 11 is made of a silicone rubber tube or the like and covers the insertion section flexible tube 1 over its entire length. A substantially cap-shaped tip cover 12 made of a resilient material such as a vinyl chloride resin or a flexible epoxy resin, for example, is attached.
[0015]
The front end cover 12 is formed in opaque black with high light-shielding properties, and transparent windows 13 and 14 are provided in a portion facing the observation window 3 and a portion facing the illumination window 4 in a watertight manner, respectively.
[0016]
An engaging projection 15 is formed on the inner surface of the rear end of the distal end cover 12 located on the outer peripheral portion of the distal end main body 2, and the engaging projection 15 is formed on the outer peripheral surface of the distal end main body 2. The tip cover 12 is engaged with the circumferential groove 8 so that the tip cover 12 is locked to the tip body 2.
[0017]
The engaging projection 15 is detachable from the circumferential groove 8 by elastically deforming the distal end cover 12, and the distal end cover 12 is pulled rearward by engaging the engaging projection 15 with the circumferential groove 8. Thus, the engaging projection 15 and the circumferential groove 8 are provided in a positional relationship slightly displaced in the axial direction so that the transparent windows 13 and 14 are drawn toward the observation window 3 and the illumination window 4.
[0018]
An annular light shielding portion 16 surrounding the transparent window 14 facing the illumination window 4 is formed on the distal end cover 12 so as to protrude inward from an inner wall portion facing the distal end surface 2 a of the distal end portion main body 2 in an annular bank shape. The other portions are in a state of floating with respect to the distal end surface 2 a of the distal end portion main body 2.
[0019]
Accordingly, the distal end cover 12 is pulled rearward by the engagement between the engagement protrusion 15 and the circumferential groove 8, so that the annular light shielding portion 16 is positioned at a position surrounding the illumination window 4 over the entire circumference. 2 is pressed against the front end surface 2a of the second elastic member 2 and pressed against it while being elastically deformed.
[0020]
As a result, the phenomenon that the illumination light emitted from the illumination window 4 reaches the observation window 3 side between the back surface of the distal end cover 12 and the distal end body 2 is completely blocked by the annular light shielding portion 16 to prevent the phenomenon. And a good endoscope observation image without flare or ghost can be obtained.
[0021]
FIG. 2 shows a second embodiment of the present invention, in which an annular light-shielding portion 16 similar to that of the first embodiment is provided not on a position surrounding the transparent window 14 facing the illumination window 4 but on the observation window 3. The transparent window 13 is formed at a position surrounding the transparent window 13.
[0022]
Even with this configuration, the same operation and effect as those of the first embodiment can be obtained, and both the position surrounding the transparent window 14 facing the illumination window 4 and the position surrounding the transparent window 13 facing the observation window 3 can be obtained. An annular light-shielding portion 16 may be formed on the second light-shielding portion.
[0023]
FIG. 3 shows a third embodiment of the present invention. An annular light-shielding portion 16 is formed at a position surrounding a transparent window 14 facing an illumination window 4 in the same manner as in the first embodiment. The rear surface of the transparent window 13 that faces is in contact with the surface of the observation window 3.
[0024]
Further, in the fourth embodiment shown in FIG. 4, the back surface of the transparent window 14 facing the illumination window 4 is also in contact with the surface of the illumination window 4. With this configuration, the amount of collapse of the annular light-shielding portion 16 can be reduced to a predetermined level.
[0025]
FIG. 5 shows a fifth embodiment of the present invention, in which the annular light shielding portion 16 is not formed so as to protrude from the distal end surface 2 a of the distal end portion main body 2 around the transparent window 13 facing the observation window 3. The rear surface of the distal end cover 12, which is pressed against the distal end surface of the projecting observation window holding frame 30, is an annular light shielding portion 16 '.
[0026]
Further, in the sixth embodiment shown in FIG. 6, the illumination window holding frame 40 is also made to protrude from the distal end surface 2a of the distal end body 2 so that the rear surface of the distal end cover 12 is pressed against the distal end surface. It was done.
[0027]
As described above, if at least one of the observation window holding frame 30 and the illumination window holding frame 40 is made to protrude from the front end surface 2a of the front end main body 2, the annular light shielding portion 16 'does not necessarily protrude from the inner wall surface of the front end cover 12. You don't have to.
[0028]
【The invention's effect】
According to the present invention, an opaque and elastic annular light-shielding portion is provided on the inner surface of the cover so as to surround at least one of the portion of the cover that faces the illumination window and the portion that faces the observation window. Is pressed against the distal end surface of the insertion portion, so that the illumination light emitted from the illumination window does not leak into the observation window through the space between the back surface of the covering cover and the surface of the insertion portion. A good endoscope observation image without flare can be obtained.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a distal end portion of a pollution control type endoscope according to a first embodiment of the present invention.
FIG. 2 is a side sectional view of a distal end portion of a pollution control type endoscope according to a second embodiment of the present invention.
FIG. 3 is a side sectional view of a distal end portion of a pollution control type endoscope according to a third embodiment of the present invention.
FIG. 4 is a side sectional view of a distal end portion of a pollution control type endoscope according to a fourth embodiment of the present invention.
FIG. 5 is a side sectional view of a distal end portion of a pollution prevention endoscope according to a fifth embodiment of the present invention.
FIG. 6 is a side sectional view of a distal end portion of a pollution control type endoscope according to a sixth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insertion part flexible tube 2 Tip main body 2a Tip surface 3 Observation window 4 Illumination window 8 Circumferential groove (cover locking means)
10 Covering cover 12 Tip cover 13 Transparent window (part facing observation window)
14 Transparent window (the part facing the lighting window)
15 Engagement projection (cover locking means)
16, 16 'annular light shielding portion 30 observation window holding frame 40 illumination window holding frame

Claims (4)

照明光を射出する照明窓と対物光学系に光像をとり入れる観察窓とが挿入部の先端に並んで配置され、少なくとも上記照明窓に面する部分と上記観察窓に面する部分とが透明に形成された被覆カバーが上記挿入部に被覆された汚染防止型内視鏡の先端部において、
上記被覆カバーの上記照明窓に面する部分と上記観察窓に面する部分の少なくとも一方を囲むように、不透明で弾力性のある環状遮光部を上記被覆カバーの内壁面に設け、上記環状遮光部が上記挿入部の先端面に圧接されるようにしたことを特徴とする汚染防止型内視鏡の先端部。An illumination window for emitting illumination light and an observation window for taking an optical image into the objective optical system are arranged side by side at the tip of the insertion section, and at least a portion facing the illumination window and a portion facing the observation window are transparent. At the tip of the pollution-prevention endoscope in which the formed cover is covered by the insertion portion,
An opaque and elastic annular light-shielding portion is provided on an inner wall surface of the cover to surround at least one of a portion of the cover that faces the illumination window and a portion of the cover that faces the observation window; A tip end portion of the contamination-prevention type endoscope, wherein the end portion is pressed against the tip end surface of the insertion portion. 上記環状遮光部を上記挿入部の先端面に押し当てる状態に上記被覆カバーを上記挿入部に対して係止するカバー係止手段が設けられている請求項１記載の汚染防止型内視鏡の先端部。2. The pollution prevention endoscope according to claim 1, further comprising: cover locking means for locking the covering cover to the insertion portion in a state where the annular light shielding portion is pressed against the distal end surface of the insertion portion. Tip. 上記環状遮光部が、上記被覆カバーの内壁面から内方に土手状に突出形成されている請求項２記載の汚染防止型内視鏡の先端部。The distal end portion of a pollution prevention endoscope according to claim 2, wherein the annular light shielding portion is formed so as to protrude inward from the inner wall surface of the covering cover in a bank shape. 上記照明窓を保持する照明窓保持枠体と上記観察窓を保持する観察窓保持枠体の少なくとも一方が上記挿入部の先端面に突出配置されていて、その枠体の先端面に上記環状遮光部が押し当てられる請求項１又は２記載の汚染防止型内視鏡の先端部。At least one of an illumination window holding frame that holds the illumination window and an observation window holding frame that holds the observation window is arranged so as to protrude from the distal end surface of the insertion portion, and the annular light-shielding portion is provided on the distal end surface of the frame. The tip of the pollution prevention endoscope according to claim 1, wherein the portion is pressed.
JP2002196861A 2002-07-05 2002-07-05 The tip of an anti-contamination endoscope Expired - Fee Related JP4083484B2 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1030539C2 (en) * 2005-11-28 2007-05-30 Intellectual Property Mvm B V Shielding sleeve as well as an optical measuring device in which this shielding sleeve can be used.
JP2008237790A (en) * 2007-03-29 2008-10-09 Olympus Medical Systems Corp Endoscope
WO2013054753A1 (en) * 2011-10-12 2013-04-18 オリンパスメディカルシステムズ株式会社 Endoscope
US8545400B2 (en) 2006-04-24 2013-10-01 Olympus Medical Systems Corp. Endoscope
JP2017012554A (en) * 2015-07-02 2017-01-19 オリンパス株式会社 Endoscope
US11478128B2 (en) * 2017-03-07 2022-10-25 Qioptiq Photonics Gmbh & Co. Kg Endoscope with cover at distal end of cannula
KR20230010507A (en) * 2021-07-12 2023-01-19 계명대학교 산학협력단 Endoscope cover assembly

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1030539C2 (en) * 2005-11-28 2007-05-30 Intellectual Property Mvm B V Shielding sleeve as well as an optical measuring device in which this shielding sleeve can be used.
WO2007061309A3 (en) * 2005-11-28 2007-09-07 Intellectual Property Mvm B V Covering sheath, and an optical measuring device to use said sheath with
US8545400B2 (en) 2006-04-24 2013-10-01 Olympus Medical Systems Corp. Endoscope
JP2008237790A (en) * 2007-03-29 2008-10-09 Olympus Medical Systems Corp Endoscope
JP4704386B2 (en) * 2007-03-29 2011-06-15 オリンパスメディカルシステムズ株式会社 Endoscope
WO2013054753A1 (en) * 2011-10-12 2013-04-18 オリンパスメディカルシステムズ株式会社 Endoscope
JP5298260B1 (en) * 2011-10-12 2013-09-25 オリンパスメディカルシステムズ株式会社 Endoscope
US8777847B2 (en) 2011-10-12 2014-07-15 Olympus Medical Systems Corp. Endoscope with distal end cover
JP2017012554A (en) * 2015-07-02 2017-01-19 オリンパス株式会社 Endoscope
US11478128B2 (en) * 2017-03-07 2022-10-25 Qioptiq Photonics Gmbh & Co. Kg Endoscope with cover at distal end of cannula
KR20230010507A (en) * 2021-07-12 2023-01-19 계명대학교 산학협력단 Endoscope cover assembly
KR102582686B1 (en) * 2021-07-12 2023-09-22 계명대학교 산학협력단 Endoscope cover assembly

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