JP3365820B2 - Endoscope device with endoscope cover - Google Patents
Endoscope device with endoscope coverInfo
- Publication number
- JP3365820B2 JP3365820B2 JP14234193A JP14234193A JP3365820B2 JP 3365820 B2 JP3365820 B2 JP 3365820B2 JP 14234193 A JP14234193 A JP 14234193A JP 14234193 A JP14234193 A JP 14234193A JP 3365820 B2 JP3365820 B2 JP 3365820B2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- endoscope
- insertion portion
- optical system
- transparent window
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Endoscopes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内視鏡の挿入部が体液
等によって汚染されるのを防止する内視鏡カバーを備え
た内視鏡カバー方式の内視鏡装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope cover type endoscope apparatus having an endoscope cover for preventing the insertion portion of the endoscope from being contaminated by body fluid or the like.
【０００２】[0002]
【従来の技術】体腔内を観察するための内視鏡は、各種
疾患を発見したり、患部を治療する等に大きな役割を果
たしている。この内視鏡は、体腔内にその挿入部を挿入
して使用するものであるため、同一内視鏡を別の被検体
に使用する場合は事前に洗浄、殺菌する必要がある。2. Description of the Related Art Endoscopes for observing the inside of body cavities play a major role in discovering various diseases and treating affected areas. Since this endoscope is used by inserting its insertion portion into a body cavity, it is necessary to wash and sterilize it in advance when using the same endoscope for another subject.
【０００３】しかし、内視鏡の洗浄、殺菌を十分に行う
には長時間を要するので、医療現場での内視鏡使用の効
率性には多くの問題があった。However, since it takes a long time to sufficiently clean and sterilize the endoscope, there are many problems in the efficiency of using the endoscope in the medical field.
【０００４】そこで、近年、内視鏡観察に必要な送気管
路、送水管路、吸引管路、鉗子チャンネル等を備え、か
つ洗浄、殺菌が充分に施された使い捨て型のカバーを、
光学的要素のみを備えた内視鏡に装着して使用すること
が提案されている。この場合、カバーは使い捨てとされ
るものであるため、内視鏡自体への衛生上の配慮は不要
となる。Therefore, in recent years, a disposable cover provided with an air supply conduit, a water supply conduit, a suction conduit, a forceps channel, etc., necessary for endoscopic observation, and which has been sufficiently washed and sterilized,
It has been proposed to be used by mounting on an endoscope having only optical elements. In this case, since the cover is disposable, it is not necessary to consider the hygiene of the endoscope itself.
【０００５】ところで、内視鏡の観察光学系窓外面とカ
バーの透明窓内面との間隔は、光学性能を考慮すると極
力少ない方がよく、できればぴったり密着している方が
良い。そこで、従来、実公昭６３−３３２０９号公報に
開示されているようなカバーとなる可撓性薄膜を遮光突
起でぴんと張って使用するものや、特開平３−１９３０
２３号公報または特開平４−３５９２１８号公報に開示
されているような観察窓をカバーの透明窓に密着させて
使用するものが提案されている。By the way, the distance between the outer surface of the observation optical system window of the endoscope and the inner surface of the transparent window of the cover is preferably as small as possible in view of optical performance, and it is preferable that they are closely attached to each other. Therefore, conventionally, a flexible thin film serving as a cover as disclosed in Japanese Utility Model Publication No. 63-33209, which is stretched with a light-shielding protrusion, is used, and JP-A-3-1930.
It has been proposed to use an observation window in close contact with the transparent window of the cover, as disclosed in Japanese Patent Laid-Open No. 23 or No. 4-359218.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、前述の
従来例のうち前者のカバーとして可撓性薄膜を用いたも
のは、開示されているように突起状のもので張設しない
としわが生じて鮮明な観察視野が得られなかったが、突
起が鋭いと薄膜がすぐに裂けて損傷してしまうという欠
点があり実現性に劣しいものであった。However, among the above-mentioned conventional examples, the former one using a flexible thin film as the cover has a projection-like shape as disclosed, and wrinkles are clearly generated unless it is stretched. However, if the projections were sharp, the thin film would be easily torn and damaged, resulting in poor feasibility.
【０００７】後者の観察窓をカバーの透明窓に密着させ
るものは、カバーの透明窓の材質に関してはアクリル等
という記載はあるが、透明窓に突き当てる内視鏡の観察
光学系窓に関してはまったく考慮されていなかった。そ
のため、同種の材料または透明窓よりも軟らかい材料が
使われる可能性が高かった。Regarding the latter one that adheres the observation window to the transparent window of the cover, although there is a description that the material of the transparent window of the cover is acrylic or the like, there is no description regarding the observation optical system window of the endoscope that abuts against the transparent window. Was not considered. Therefore, it is more likely that the same kind of material or a material softer than the transparent window is used.
【０００８】カバーは使い捨て型のため、内視鏡の挿入
部先端に突き当てることによって内面がわずかに損傷し
ても裂けて開口せずに１回の検査に支障をきたさなけれ
ば問題ないが、カバーと組み合わせて使うカバー用内視
鏡は高価であり繰り返し使用されるリユース型のため、
特に観察光学系窓が損傷すると次回から鮮明な観察視野
を維持することができなくなってしまう。Since the cover is a disposable type, even if the inner surface is slightly damaged by abutting against the distal end of the insertion portion of the endoscope, there is no problem as long as it does not open because it does not open without breaking. The cover endoscope used in combination with the cover is expensive and is a reuse type that can be used repeatedly,
In particular, if the observation optical system window is damaged, it will not be possible to maintain a clear observation field from the next time.
【０００９】したがって、従来のものでは観察光学系窓
が損傷しないように細心の注意を払ってカバーを挿入部
先端に突き当てる必要があったが、長尺な挿入部を持っ
た内視鏡において挿入部のほぼ全長にカバーを被せるタ
イプのものでは、挿入時にカバー手元開口部から強く押
し込んでいく必要があり、どうしても突き当て時にカバ
ーの透明窓内面と内視鏡の観察光学系窓外面とが強く接
触し、観察光学系窓外面が損傷する危険性を有してい
た。Therefore, in the conventional art, it was necessary to meticulously abut the cover on the tip of the insertion portion so as not to damage the observation optical system window. However, in an endoscope having a long insertion portion, In the case of a type in which the cover covers almost the entire length of the insertion part, it is necessary to push it strongly from the opening part of the cover at the time of insertion. There was a risk of strong contact and damage to the outer surface of the observation optical system window.
【００１０】本発明は、これらの事情に鑑みてなされた
もので、内視鏡カバーを内視鏡挿入部に被せる際に、内
視鏡カバーの透明窓に内視鏡の観察光学系窓が強く接触
しても繰り返し使用される内視鏡の観察光学系窓が損傷
することなく、鮮明な観察視野を維持することができる
内視鏡カバー方式の内視鏡装置を提供することを目的と
している。The present invention has been made in view of these circumstances, and when the endoscope cover is put on the endoscope insertion portion, a transparent window of the endoscope cover is provided with an observation optical system window of the endoscope. With the object of providing an endoscope cover-type endoscope device capable of maintaining a clear observation field of view without damaging the observation optical system window of the endoscope that is repeatedly used even when strongly contacted. There is.
【００１１】[0011]
【課題を解決するための手段】本発明による第１の内視
鏡カバー方式の内視鏡装置は、細長の挿入部の先端支持
部に観察窓を具備したカバー用内視鏡と、このカバー用
内視鏡の挿入部を覆い、少なくとも前記観察窓に対応す
る位置に透明窓を設けた内視鏡カバーとを備えた内視鏡
カバー方式の内視鏡装置において、前記内視鏡カバーの
透明窓の少なくとも内面を、前記カバー用内視鏡の観察
窓外面の硬度よりも軟らかく、かつ、観察窓外面を強く
押しつけて接触させても変形しない程度の硬度を有する
硬質材料により構成したことを特徴とする。 また、本発
明による第２の内視鏡カバー方式の内視鏡装置は、前記
第１の内視鏡カバー方式の内視鏡装置において、前記カ
バー用内視鏡の観察窓として、該観察窓外面の硬度がヌ
ープ硬さ［Ｈｋ］３級（２５０以上）以上のガラス材料
を用い、また、前記内視鏡カバーの透明窓として、該透
明窓の少なくとも内面の硬度がヌープ硬さ［Ｈｋ］２級
（２５０未満）以下のガラス材料または鉛筆硬度３Ｈ以
下の硬質プラスチック材料を用いたことを特徴とする。 SUMMARY OF THE INVENTION A first endoscope cover type endoscope apparatus according to the present invention is a cover endoscope having an observation window in a distal end supporting portion of an elongated insertion portion, and this cover. In the endoscope device of the endoscope cover system, which covers the insertion portion of the endoscope for endoscopes and includes an endoscope cover having a transparent window at least at a position corresponding to the observation window, At least the inner surface of the transparent window is softer than the outer surface of the observation window of the cover endoscope , and the outer surface of the observation window is strong.
Has a hardness that does not deform even when pressed and brought into contact.
It is characterized by being made of a hard material. Also,
The second endoscopic cover type endoscope apparatus according to Ming is
In the endoscope apparatus of the first endoscope cover system,
As the observation window of the bar endoscope, the hardness of the outer surface of the observation window is
Glass material with Boop hardness [Hk] third grade (250 or higher)
Is used as the transparent window of the endoscope cover.
The hardness of at least the inner surface of the light window is Knoop hardness [Hk] Class 2
Glass material (less than 250) or less or pencil hardness of 3H or more
It is characterized by using the lower hard plastic material.
【００１２】[0012]
【実施例】以下、図面を参照して本発明の実施例を説明
する。図１ないし図３は本発明の第１実施例に係り、図
１はカバー用内視鏡を接続した状態の内視鏡装置の全体
構成を示す斜視図、図２は内視鏡カバーの挿入部カバー
部にカバー用内視鏡を装着した状態の構成を示す断面
図、図３はカバー先端部にカバー用内視鏡の先端支持部
を完全に装着した状態を示す光学系の拡大断面図であ
る。Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 relate to a first embodiment of the present invention. FIG. 1 is a perspective view showing the overall configuration of an endoscope apparatus with a cover endoscope connected, and FIG. 2 is an endoscope cover insertion. FIG. 3 is a cross-sectional view showing a configuration in which the cover endoscope is attached to the cover portion, and FIG. 3 is an enlarged cross-sectional view of an optical system showing a state in which the tip support portion of the cover endoscope is completely attached to the cover tip portion. Is.
【００１３】図１に示す本実施例の内視鏡カバー方式の
内視鏡装置において、カート１には、光源装置２、ビデ
オプロセッサ３、流体制御装置４、内視鏡カバー拡張器
５、モニタ６等の周辺機器が収納されている。光源装置
２には、カバー用内視鏡７がユニバーサルコード８を介
して接続されている。このカバー用内視鏡７には、その
挿入部の先端近傍に設けられた後述する撮像素子部から
出力された信号をビデオプロセッサ３に入力させるケー
ブル９が接続されている。In the endoscope cover type endoscope apparatus of the present embodiment shown in FIG. 1, the cart 1 includes a light source device 2, a video processor 3, a fluid control device 4, an endoscope cover extender 5, and a monitor. Peripheral devices such as 6 are stored. A cover endoscope 7 is connected to the light source device 2 via a universal cord 8. A cable 9 is connected to the cover endoscope 7 for inputting a signal output from an image pickup device section, which will be described later, provided near the distal end of the insertion section to the video processor 3.
【００１４】また、カバー用内視鏡７には、カバー用内
視鏡７を覆う内視鏡カバー１０（以下、カバーと略称す
る）が被覆されている。このカバー１０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る。また、内視鏡カバー拡
張器５には、拡張チューブ１４が設けられている。内視
鏡カバー拡張器５は、挿入部カバー部１１にカバー用内
視鏡の挿入部を装着しやすくするために、挿入部カバー
部１１に空気を送り込むなどしてカバーを拡張するため
の装置（インフレータ）である。そして、拡張チューブ
１４は、このような内視鏡カバー拡張器５と挿入部カバ
ー部１１とを接続するために用いるチューブ（インフレ
ータチューブ）である。The cover endoscope 7 is covered with an endoscope cover 10 (hereinafter referred to as a cover) that covers the cover endoscope 7. The cover 10 includes an insertion section cover section 11, an operation section cover 12, and a universal cord cover 13. Further, the endoscope cover expander 5 is provided with an expansion tube 14. The endoscope cover expander 5 is a device for expanding the cover by, for example, sending air to the insertion portion cover portion 11 in order to easily attach the insertion portion of the cover endoscope to the insertion portion cover portion 11. (Inflator). The expansion tube 14 is a tube (inflator tube) used to connect the endoscope cover expander 5 and the insertion section cover 11 as described above.
【００１５】カバー１０にカバー用内視鏡７を装着する
際には、挿入部カバー部１１はカバー保持具１５を介し
て保持され、内視鏡カバー拡張器５によって挿入部カバ
ー部１１を拡張した状態でカバー用内視鏡７を内部の内
視鏡挿入チャンネルに挿入するようになっている。When the cover endoscope 7 is mounted on the cover 10, the insert cover portion 11 is held via the cover holder 15, and the insert cover portion 11 is expanded by the endoscope cover expander 5. In this state, the cover endoscope 7 is inserted into the internal endoscope insertion channel.
【００１６】図２は、カバー用内視鏡７を挿入部カバー
部１１に装着した状態を示す断面図である。挿入部カバ
ー部１１のカバー先端部１６は、後述する照明光学系、
観察光学系に対応する位置に設けられた透明な窓（レン
ズカバー）１７を有し、この透明窓１７の近傍には透明
窓１７に向かって開口した送気・送水ノズル１８が設け
られている。FIG. 2 is a sectional view showing a state in which the cover endoscope 7 is mounted on the insertion portion cover portion 11. The cover distal end portion 16 of the insertion portion cover portion 11 includes an illumination optical system, which will be described later,
A transparent window (lens cover) 17 is provided at a position corresponding to the observation optical system, and an air / water feeding nozzle 18 opening toward the transparent window 17 is provided near the transparent window 17. .
【００１７】また、カバー先端部１６には、カバー用内
視鏡７の挿入部１９を外部環境から隔離するための軟性
材料からなる挿入部カバー外皮２０が気密的に接続され
ている。また、挿入部カバー外皮２０の術者手元側に
は、鉗子挿入口２１、さらに内視鏡カバー拡張器５に設
けられた拡張チューブ１４を接続する拡張チューブ口体
２２等を有する内視鏡操作部固定用口体部２３が設けら
れ、挿入部カバー外皮２０と気密的に接続されている。An insert cover 20 which is made of a soft material for isolating the insert 19 of the cover endoscope 7 from the external environment is hermetically connected to the cover tip 16. Further, an endoscope operation including a forceps insertion port 21 and an extension tube mouth 22 for connecting the extension tube 14 provided in the endoscope cover dilator 5 and the like on the operator's hand side of the insertion portion cover outer skin 20. A mouthpiece 23 for fixing the portion is provided and is hermetically connected to the outer cover 20 of the insertion portion.
【００１８】内視鏡操作部固定用口体部２３の術者手元
側には、カバー用に設けられた内視鏡挿入チャンネル２
４の開口部２５が形成され、さらに、一端がカバー先端
部１６の送気・送水ノズル１８に連通した送気管路２
６，送水管路２７、及び吸引管路２８等の管路が突出し
ている。An endoscope insertion channel 2 provided for a cover is provided on the operator's hand side of the mouthpiece portion 23 for fixing the endoscope operation portion.
4 has an opening 25 formed therein, and one end thereof communicates with the air / water supply nozzle 18 of the cover front end 16 and the air supply conduit 2
6. Pipe lines such as the water supply pipe line 27 and the suction pipe line 28 project.
【００１９】カバー用内視鏡７の挿入部１９は、先端支
持部２９がカバー先端部１６の内側凹部に嵌合するよう
に挿入部カバー部１１内に挿入されるようになってい
る。The insertion portion 19 of the cover endoscope 7 is designed to be inserted into the insertion portion cover portion 11 so that the tip support portion 29 fits into the inner recess of the cover tip portion 16.
【００２０】図３は、カバー先端部１６にカバー用内視
鏡７の先端支持部２９を完全に装着した状態を示す光学
系の拡大断面図である。カバー先端部１６の透明窓１７
は、１枚もののプラスチック成形加工品で厚さが約０．
３mm、鉛筆硬度のＨと同等の硬度の非晶質ポリオレフィ
ンを用いて構成されている。また、この透明窓１７にぴ
ったり密着させる観察光学系３０の第１面レンズ３１
は、ヌープ硬さ（Ｈｋ）が６級のＢＳＬ７のガラス硝材
の加工品を用いて構成されている。FIG. 3 is an enlarged sectional view of the optical system showing a state in which the front end support portion 29 of the cover endoscope 7 is completely attached to the front end portion 16 of the cover. Transparent window 17 of cover tip 16
Is a single plastic molded product with a thickness of about 0.
It is composed of an amorphous polyolefin having a hardness of 3 mm and a pencil hardness of H. In addition, the first surface lens 31 of the observation optical system 30 that is closely attached to the transparent window 17
Is made of a processed glass material of BSL7 having a Knoop hardness (Hk) of grade 6.
【００２１】また、照明光学系３２の第１面レンズ３３
は、観察光学系３０の第１面レンズ３１より軟らかいヌ
ープ硬さ（Ｈｋ）が４級のガラス硝材の加工品を用いて
構成されている。Further, the first surface lens 33 of the illumination optical system 32
Is made of a processed glass glass material having a Knoop hardness (Hk) of grade 4 which is softer than the first surface lens 31 of the observation optical system 30.
【００２２】したがって、透明窓１７は、観察光学系３
０の第１面レンズ３１、照明光学系３２の第１面レンズ
３３の硬度より軟らかい材質で構成されている。Therefore, the transparent window 17 is provided with the observation optical system 3
The first surface lens 31 of 0 and the first surface lens 33 of the illumination optical system 32 are made of a material softer than the hardness.
【００２３】観察光学系３０は、第１面レンズ３１を含
む対物レンズ群３４と、固体撮像素子、信号ケーブル等
から構成される撮像素子部３５とから構成され、照明光
学系３２は、第１面レンズ３３である照明レンズとライ
トガイドファイバ３６とから構成されており、それぞれ
図１のビデオプロセッサ３，光源装置２に接続され、内
視鏡画像をモニタ６に表示できるようになっている。The observation optical system 30 is composed of an objective lens group 34 including a first surface lens 31, and an image pickup device section 35 formed of a solid-state image pickup device, a signal cable, etc., and the illumination optical system 32 is a first optical system. It is composed of an illumination lens which is a surface lens 33 and a light guide fiber 36, which are respectively connected to the video processor 3 and the light source device 2 of FIG. 1 so that an endoscopic image can be displayed on the monitor 6.
【００２４】観察光学系３０及び照明光学系３２の第１
面レンズ３１，３３には、外周部に面取り３７が施さ
れ、面取り３７の周囲には遮光性塗料入り接着剤等の遮
光材３８が塗布されていて、照明光が側方から対物レン
ズ群３４に飛び込むのを防いでいる。また、カバー先端
部１６と先端支持部２９との間には、これらが完全に装
着した状態でわずかなすき間３９ができるように各部寸
法が設定されている。First of the observation optical system 30 and the illumination optical system 32
The surface lenses 31 and 33 are chamfered 37 on their outer peripheral portions, and a light shielding material 38 such as an adhesive containing a light shielding paint is applied around the chamfers 37 so that the illumination light is laterally applied to the objective lens group 34. It prevents you from jumping into. Further, the dimensions of the respective parts are set between the cover front end portion 16 and the front end support portion 29 so that a slight gap 39 can be formed when these are completely mounted.
【００２５】次に、本実施例の内視鏡装置の作用につい
て説明する。カバー用内視鏡７にカバー１０を装着する
際には、まず挿入部カバー部１１をカバー保持具１５に
装着し、拡張チューブ口体２２に拡張チューブ１４を装
着して内視鏡カバー拡張器５より空気等を送り込んで内
視鏡挿入チャンネル２４内を拡張させる。次に、カバー
用内視鏡７の挿入部１９を開口部２５から内視鏡挿入チ
ャンネル２４の先端まで押し込んでいく。Next, the operation of the endoscope apparatus of this embodiment will be described. When the cover 10 is attached to the cover endoscope 7, first, the insertion portion cover portion 11 is attached to the cover holder 15, the extension tube 14 is attached to the extension tube mouth 22, and the endoscope cover extender is attached. Air or the like is sent from 5 to expand the inside of the endoscope insertion channel 24. Next, the insertion portion 19 of the cover endoscope 7 is pushed from the opening 25 to the tip of the endoscope insertion channel 24.
【００２６】図３に示すように透明窓１７に観察光学系
３０及び照明光学系３２の第１面レンズ３１，３３が突
き当たった状態で、図示しない手元側の連結部材により
挿入部カバー部１１をカバー用内視鏡７に固定する。As shown in FIG. 3, in a state where the first surface lenses 31 and 33 of the observation optical system 30 and the illumination optical system 32 are abutted against the transparent window 17, the insertion portion cover portion 11 is fixed by a connecting member on the near side not shown. It is fixed to the cover endoscope 7.
【００２７】そして、操作部カバー１２，ユニバーサル
コードカバー１３を装着し、カバー用内視鏡７へカバー
１０を全て装着した後、内視鏡を被検体へ挿入して検査
を行う。Then, after the operation section cover 12 and the universal cord cover 13 are attached and the cover 10 is completely attached to the cover endoscope 7, the endoscope is inserted into the subject to perform an inspection.
【００２８】検査終了後、装着時と逆の手順でカバー用
内視鏡７よりカバー１０を外し、カバー１０全てをゴミ
箱等に廃棄する。After the inspection is completed, the cover 10 is removed from the cover endoscope 7 in the reverse order of the mounting, and the entire cover 10 is discarded in a trash box or the like.
【００２９】次の検査があるときは、カバー用内視鏡７
はそのまま用い別の新しいカバー１０を装着する。When there is the next inspection, the endoscope for cover 7
Is used as it is and another new cover 10 is attached.
【００３０】１日の検査終了後、カバー用内視鏡７を洗
浄、消毒し、図示しない内視鏡保管ハンガーに掛けて保
管する。After the completion of the inspection for one day, the cover endoscope 7 is washed and sterilized, and stored on an endoscope storage hanger (not shown).
【００３１】本実施例では、観察光学系３０の第１面レ
ンズ３１を透明窓１７よりも硬度の十分硬い材料によっ
て構成し、さらに照明光学系３２の第１面レンズ３３も
透明窓１７よりも硬度の十分硬い材料を用いたので、透
明窓１７にぴったり密着させるために挿入部１９の先端
支持部２９を強く押し込んでも、第１面レンズ３１，３
３が透明窓１７に接触した際に損傷することはない。よ
って、繰り返し使用される内視鏡において鮮明な観察視
野を維持することができる。In this embodiment, the first surface lens 31 of the observing optical system 30 is made of a material having a hardness sufficiently higher than that of the transparent window 17, and the first surface lens 33 of the illumination optical system 32 is also made more transparent than the transparent window 17. Since a material having a sufficiently high hardness is used, even if the tip end support portion 29 of the insertion portion 19 is strongly pushed in order to closely fit the transparent window 17, the first surface lenses 31, 3
When 3 touches the transparent window 17, it is not damaged. Therefore, a clear observation field of view can be maintained in the endoscope that is repeatedly used.
【００３２】また、１枚もののプラスチック成形品で構
成された透明窓を用いたので、安価で精度のよいカバー
が提供できる。また円形でなく略半円形等の異形形状も
容易に形成することができる。Further, since the transparent window made of one plastic molded product is used, an inexpensive and accurate cover can be provided. Further, it is possible to easily form an irregular shape such as a substantially semicircular shape instead of a circular shape.
【００３３】さらに、カバー用内視鏡７の第１面レンズ
３１，３３の外径よりもカバー１０の透明窓１７が大き
い形状をしているので、透明窓１７の角部等のエッジで
第１面レンズ３１，３３が損傷することもない。Furthermore, since the transparent window 17 of the cover 10 has a shape larger than the outer diameter of the first surface lenses 31, 33 of the cover endoscope 7, the transparent window 17 has a corner at the edge of the transparent window 17 or the like. The one-sided lenses 31 and 33 are not damaged.
【００３４】また、第１面レンズ３１，３３の周囲に遮
光材３８を設けたので、側方からの照明光によるフレア
ー，ゴースト等の不具合も生じにくい。Further, since the light shielding material 38 is provided around the first surface lenses 31, 33, it is less likely that defects such as flare and ghost due to illumination light from the side will occur.
【００３５】図４は本発明の第２実施例に係る内視鏡装
置において内視鏡カバー先端部にカバー用内視鏡の先端
支持部を完全に装着した状態を示す光学系の拡大断面図
である。FIG. 4 is an enlarged cross-sectional view of the optical system showing a state in which the distal end support portion of the cover endoscope is completely attached to the distal end portion of the endoscope cover in the endoscope apparatus according to the second embodiment of the present invention. Is.
【００３６】第２実施例は第１実施例の変形例であり、
内視鏡の挿入部先端部の光学系及び内視鏡カバーの先端
部の構成を変更したものである。第１実施例と異なる部
分のみ説明する。The second embodiment is a modification of the first embodiment,
The configuration of the optical system at the tip of the insertion portion of the endoscope and the configuration of the tip of the endoscope cover are changed. Only parts different from the first embodiment will be described.
【００３７】図４に示すように、本実施例ではカバー先
端部１６には透明窓１７が観察光学系用の透明窓１７ａ
と照明光学系用の透明窓１７ｂの２つに分かれて設けら
れ、それぞれ別個に固定されていて、透明窓１７ａ，１
７ｂの境界に内側へ突出した遮光突起４０が配設されて
いる。この透明窓１７は、ヌープ硬さ（Ｈｋ）が２級以
下のガラス硝材の加工品により構成され、円形の形状を
している。As shown in FIG. 4, in this embodiment, a transparent window 17 is provided at the cover tip portion 16 and a transparent window 17a for the observation optical system.
And a transparent window 17b for the illumination optical system, which are separately provided and fixed separately.
A light-shielding protrusion 40 protruding inward is arranged at the boundary of 7b. This transparent window 17 is made of a processed glass glass material having a Knoop hardness (Hk) of grade 2 or lower, and has a circular shape.
【００３８】一方、カバー用内視鏡７の先端支持部２９
には、第１面レンズ３１よりもわずかに突出したフレア
ーシボリも兼ねる金属筒状のレンズ枠４１が固定されて
いて、レンズ枠４１内には、対物レンズ群３４，撮像素
子部３５からなる観察光学系３０が固定されている。On the other hand, the tip support portion 29 of the cover endoscope 7
A metal cylindrical lens frame 41 that also serves as a flare sinking and slightly protrudes from the first surface lens 31 is fixed to the inside of the lens frame 41. The lens frame 41 includes an objective lens group 34 and an imaging device section 35 for observation. The optical system 30 is fixed.
【００３９】また、照明レンズ３３の周囲には、リング
状の遮光突起４２が先端支持部２９から突出しており、
前記遮光突起４０及び４２により照明光が対物レンズ群
３４に入り込むのを完全に防いでいる。A ring-shaped light-shielding protrusion 42 projects from the tip support portion 29 around the illumination lens 33.
The light-shielding protrusions 40 and 42 completely prevent the illumination light from entering the objective lens group 34.
【００４０】レンズ枠４１の先端は透明窓１７に突き当
たっているが、照明レンズ３３及び遮光突起４２は透明
窓１７に突き当たらないように各部寸法が設定されてい
る。よって、内視鏡の先端支持部２９において透明窓１
７に当接する部位はレンズ枠４１のみとなっている。ま
た、透明窓１７の内外面には、反射防止用のマルチコー
ティングが施されている。その他の構成は第１実施例と
同様である。Although the front end of the lens frame 41 abuts on the transparent window 17, the dimensions of each part are set so that the illumination lens 33 and the light-shielding protrusion 42 do not abut on the transparent window 17. Therefore, the transparent window 1 is provided in the distal end support portion 29 of the endoscope.
Only the lens frame 41 is in contact with 7. Further, the inner and outer surfaces of the transparent window 17 are provided with anti-reflection multi-coating. Other configurations are similar to those of the first embodiment.
【００４１】本実施例の構成では、カバーの透明窓１７
が観察光学系用と照明光学系用の別個に分かれていて間
が完全に遮光されているので、照明光フレアを第１実施
例以上に完全に防ぐことができる。In the structure of this embodiment, the transparent window 17 of the cover is used.
Since the observation optical system and the illumination optical system are separately separated and completely shielded from each other, the illumination light flare can be completely prevented more than in the first embodiment.
【００４２】また、透明窓１７に突き当たるレンズ枠４
１は薄肉のもので変形しやすい構成となっているが、透
明窓１７の材質が軟らかいので変形することがない。Further, the lens frame 4 which abuts the transparent window 17
1 is thin and has a structure that is easily deformed, but it is not deformed because the material of the transparent window 17 is soft.
【００４３】図５は本発明の第３実施例に係る内視鏡装
置において内視鏡カバーにカバー用内視鏡を装着した状
態の構成を示す一部切り欠き断面図である。FIG. 5 is a partially cutaway sectional view showing the structure of the endoscope apparatus according to the third embodiment of the present invention in which the cover endoscope is mounted on the endoscope cover.
【００４４】第３実施例は、カバー用内視鏡として側視
型の硬性鏡を用いた例である。The third embodiment is an example in which a side-viewing type rigid endoscope is used as the cover endoscope.
【００４５】図５に示すように、カバー用内視鏡は、伝
送光学系としてリレーレンズ４３を組み合わせたものを
有し、側視の観察光学系４４を具備した腹腔鏡等の硬性
鏡４５によって構成されている。また、内視鏡カバー
は、硬性鏡４５の挿入部を覆うために全て透明で先端側
が閉塞し手元側が開口している袋状に形成された硬性シ
ース４６によって構成されている。As shown in FIG. 5, the cover endoscope has a combination of a relay lens 43 as a transmission optical system, and is provided with a rigid endoscope 45 such as a laparoscope having a side-viewing observation optical system 44. It is configured. Further, the endoscope cover is formed of a bag-shaped hard sheath 46 which is transparent and covers the insertion portion of the rigid endoscope 45, is closed at the distal end side, and is open at the proximal side.
【００４６】硬性シース４６は、ＰＭＰ（ポリメチルペ
ンテン）またはＰＥＴ（ポリエチレンテレフタレート）
等の鉛筆硬度のＨとほぼ同程度の硬度の軟らかいプラス
チックによって構成されている。The hard sheath 46 is made of PMP (polymethylpentene) or PET (polyethylene terephthalate).
It is made of soft plastic having a hardness almost equal to H of pencil hardness.
【００４７】硬性鏡４５の基端部には、照明光供給用の
ライトガイドケーブル４７が着脱可能に設けられると共
に観察するための接眼部４８が配設されている。At the base end of the rigid endoscope 45, a light guide cable 47 for supplying illumination light is detachably provided and an eyepiece 48 for observation is arranged.
【００４８】硬性シース４６の手元側には、弾性ゴム等
からなる固定ひも４９が取り付けられており、ライトガ
イドケーブル４７を接続する際に固定ひも４９をライト
ガイドケーブル４７に引っ掛けて固定できるようになっ
ている。A fixed string 49 made of elastic rubber or the like is attached to the proximal side of the hard sheath 46 so that the fixed string 49 can be hooked and fixed to the light guide cable 47 when the light guide cable 47 is connected. Has become.
【００４９】また、硬性鏡４５において、観察用第１面
レンズ５０と照明用第１面レンズ５１とは、共にオート
クレーブ可能でヌープ硬さが６級のＢＳＬ７のガラス硝
材の加工品を用いて構成されている。Further, in the rigid endoscope 45, both the observation first surface lens 50 and the illumination first surface lens 51 are constructed by using a processed product of a glass glass material of BSL7 having a Knoop hardness of 6th grade which can be autoclaved. Has been done.
【００５０】このように、本実施例では内視鏡カバーと
して全て透明なプラスチック材料の成形品からなる硬性
シース４６を用いたので、内視鏡カバーを安価に構成す
ることができる。As described above, in this embodiment, since the hard sheath 46 made of a molded product of transparent plastic material is used as the endoscope cover, the endoscope cover can be constructed at a low cost.
【００５１】ところで、第１実施例のカバー方式の内視
鏡装置において、内視鏡カバー拡張器５を使用しなくと
も容易にカバー用内視鏡７の挿入部１９をカバー１０の
挿入部カバー部１１に装着可能にすることもできる。こ
のようなカバー装着時に内視鏡カバー拡張器を不要とし
たカバー方式の内視鏡装置の構成例を以下に示す。By the way, in the cover type endoscope apparatus of the first embodiment, the insertion portion 19 of the cover endoscope 7 can be easily covered without using the endoscope cover expander 5. It can also be made attachable to the part 11. An example of the configuration of a cover type endoscope apparatus that does not require an endoscope cover extender when the cover is attached is shown below.
【００５２】図６はカバー装着時に内視鏡カバー拡張器
を不要としたカバー方式の内視鏡装置の第１の構成例を
示したものである。FIG. 6 shows a first configuration example of a cover type endoscope apparatus which does not require an endoscope cover extender when the cover is attached.
【００５３】図６（ａ）は装着前のカバーを示した断面
図であり、挿入部カバー部は、内側に突起５２を有した
透明なプラスチック材料からなる硬質のカバー先端部５
３と、カバー先端部５３に気密的に接続されるカバー外
皮である内径が内視鏡の挿入部１９より細い軟性の弾性
ゴムシース５４と、挿入部カバー部の両端部に接続され
カバーの全長を規制する規制ワイヤ５５と、弾性ゴムシ
ース５４の手元側に接続された硬質の手元リング５６
と、手元リング５６の後端側を覆うように接続された伸
縮性のよい弾性ゴムシート５７とから構成されている。FIG. 6 (a) is a cross-sectional view showing the cover before mounting. The insert cover portion is a hard cover tip portion 5 made of a transparent plastic material having a protrusion 52 inside.
3, a flexible elastic rubber sheath 54 having an inner diameter, which is a cover outer skin airtightly connected to the cover distal end portion 53 and is thinner than the insertion portion 19 of the endoscope, and the entire length of the cover connected to both end portions of the insertion portion cover portion. A restricting wire 55 for restricting and a hard hand ring 56 connected to the hand side of the elastic rubber sheath 54
And an elastic rubber sheet 57 with good elasticity that is connected so as to cover the rear end side of the hand ring 56.
【００５４】弾性ゴムシース５４及び規制ワイヤ５５
は、カバー先端部５３と手元リング５６とに固定されて
おり、弾性ゴムシート５７により手元リング５６が水密
に密封されている。一方、カバー用内視鏡７の挿入部１
９の先端には、カバー先端部５３の突起５２に対応する
位置に凹部５８が設けられている。この凹部５８は、挿
入部１９の先端部に設けられる図示しない観察光学系の
第１面レンズがカバー先端部内面に密着するのを妨げな
い程度のわずかな凹みとなっている。Elastic rubber sheath 54 and regulating wire 55
Is fixed to the cover tip portion 53 and the hand ring 56, and the hand ring 56 is watertightly sealed by an elastic rubber sheet 57. On the other hand, the insertion portion 1 of the cover endoscope 7
A recess 58 is provided at the tip of the cover 9 at a position corresponding to the protrusion 52 of the cover tip 53. The recess 58 is a slight recess that does not prevent the first surface lens of the observation optical system (not shown) provided at the tip of the insertion section 19 from closely contacting the inner surface of the tip of the cover.
【００５５】図６（ｂ）は装着途中のカバー及び内視鏡
挿入部を示し、図６（ｃ）は装着後のカバー及び内視鏡
挿入部を示した断面図である。FIG. 6 (b) is a sectional view showing the cover and the endoscope insertion portion during the mounting, and FIG. 6 (c) is a sectional view showing the cover and the endoscope insertion portion after the mounting.
【００５６】挿入部カバー部内に内視鏡の挿入部１９を
挿入して装着する際には、弾性ゴムシート５７の部分に
挿入部１９の先端を当接し、図６（ｂ）に示すように、
挿入部１９の先端部で弾性ゴムシート５７を押し込むこ
とにより、弾性ゴムシース５４が膨張し摩擦力なくスム
ーズにカバー先端まで挿入部１９を挿入できる。このと
き、弾性ゴムシース５４は、挿入部カバー部内の容積が
変わらないため膨張するが、規制ワイヤ５５により挿入
軸方向への伸びが規制され径方向に膨張する。When the insertion portion 19 of the endoscope is inserted and mounted in the insertion portion cover portion, the tip of the insertion portion 19 is brought into contact with the elastic rubber sheet 57, as shown in FIG. 6 (b). ,
By pushing the elastic rubber sheet 57 at the tip of the insertion portion 19, the elastic rubber sheath 54 expands and the insertion portion 19 can be smoothly inserted to the tip of the cover without frictional force. At this time, the elastic rubber sheath 54 expands because the volume inside the insertion section cover does not change, but the restriction wire 55 restricts the expansion in the insertion axis direction and expands in the radial direction.
【００５７】そして、図６（ｃ）に示すように挿入部１
９の先端がカバー先端部５３に達すると、突起５２と挿
入部１９の凹部５８とが係合して突起５２により弾性ゴ
ムシート５７が破れ、弾性ゴムシース５４が収縮して挿
入部１９に密着する。これにより、挿入部カバー部を挿
入部１９の全長にわたりぴったり固定できる。このよう
に挿入部カバー部と内視鏡の挿入部１９とを装着した状
態で被検体へ挿入して検査を行う。Then, as shown in FIG. 6C, the insertion portion 1
When the tip of 9 reaches the cover tip 53, the projection 52 and the recess 58 of the insertion portion 19 are engaged with each other, the elastic rubber sheet 57 is broken by the projection 52, and the elastic rubber sheath 54 contracts and comes into close contact with the insertion portion 19. . Thereby, the insertion portion cover portion can be fixed exactly over the entire length of the insertion portion 19. In this manner, the insertion portion cover portion and the insertion portion 19 of the endoscope are attached to the subject for inspection.
【００５８】検査終了後、弾性ゴムシース５４の手元側
に切れ目を入れて引き裂いてカバーを挿入部１９から外
し廃棄する。その他の構成、作用は第１実施例と同様で
ある。After the inspection is completed, a cut is made on the proximal side of the elastic rubber sheath 54 and the tear is made, and the cover is removed from the insertion portion 19 and discarded. Other configurations and operations are similar to those of the first embodiment.
【００５９】本例では、第１実施例と異なり挿入部カバ
ー部に開口部がないので、カバー単体での水密チェック
がやりやすくカバー内面が汚染されることもない。In this embodiment, unlike the first embodiment, since there is no opening in the insertion portion cover portion, it is easy to check the watertightness of the cover alone and the inner surface of the cover is not contaminated.
【００６０】また、カバー拡張器５やカバーに設ける拡
張チューブ口体２２等が不要となり、内視鏡カバー及び
システム全体を安価に構成することができる。Further, the cover expander 5 and the expansion tube mouth 22 provided on the cover are not required, and the endoscope cover and the entire system can be constructed at low cost.
【００６１】さらに、カバー装着後に吸引装置等を使わ
なくても挿入部カバー部がカバー用内視鏡７の挿入部１
９に全長にわたりぴったり密着するので、検査時にカバ
ー先端部５３がずれて観察に支障をきたすことも防止で
きる。Further, even after the cover is attached, the insertion portion cover portion is the insertion portion 1 of the cover endoscope 7 without using a suction device or the like.
It is also possible to prevent the cover tip portion 53 from being deviated during inspection so as to obstruct the observation because the cover 9 is closely attached over its entire length.
【００６２】また、カバー先端部を一体の透明なプラス
チックで構成したので、カバーを安価に構成できる。Further, since the front end portion of the cover is made of one-piece transparent plastic, the cover can be constructed at low cost.
【００６３】図７はカバー装着時に内視鏡カバー拡張器
を不要としたカバー方式の内視鏡装置の第２の構成例を
示したものである。FIG. 7 shows a second example of the configuration of a cover type endoscope apparatus which does not require an endoscope cover extender when the cover is attached.
【００６４】本例は第１の構成例の変形例であり、挿入
部カバー部は、規制ワイヤ５５を設ける代わりに、半硬
性の軸方向全長に渡って切り欠きを有するチューブ体５
９と、このチューブ体５９の切り欠きを全長に渡って覆
う軟性の弾性ゴム等からなるシート体６０とにより構成
されている。その他の部分は前記第１の構成例と同様に
構成されている。This example is a modification of the first configuration example, and the insertion section cover section has a tube body 5 having a notch over the entire length in the semi-rigid axial direction, instead of providing the regulation wire 55.
9 and a sheet body 60 made of soft elastic rubber or the like for covering the notch of the tube body 59 over the entire length. The other parts are configured similarly to the first configuration example.
【００６５】図７において（ａ）は内視鏡挿入部を装着
前の状態を示し、（ｂ）は内視鏡挿入部の装着状態を示
した横断方向の断面図である。内視鏡の挿入部１９を挿
入部カバー部内へ挿入すると、図７（ｂ）に示すよう
に、シート体６０が伸びて挿入部カバー部は挿入軸方向
へは伸びず径方向にのみ膨張する。これにより、摩擦力
なく容易にカバー先端まで挿入部１９を挿入できる。In FIG. 7, (a) shows a state before the endoscope insertion part is attached, and (b) is a cross-sectional view in a transverse direction showing the attachment state of the endoscope insertion part. When the insertion portion 19 of the endoscope is inserted into the insertion portion cover portion, as shown in FIG. 7B, the sheet body 60 extends and the insertion portion cover portion does not extend in the insertion axis direction but expands only in the radial direction. . Thereby, the insertion portion 19 can be easily inserted up to the tip of the cover without frictional force.
【００６６】本例の構成では、第１の構成例と比較して
挿入部カバー部の長さ安定性が高くなる。In the constitution of this example, the length stability of the insertion portion cover portion becomes higher than that in the first constitution example.
【００６７】なお、第１の構成例における規制ワイヤ５
５は、複数本を対称位置に設けても良いし、ワイヤの代
わりにブレード状のものを用いても良い。また、第２の
構成例における切り欠き及びシート体は、１ヶ所だけで
なく２ヶ所以上設けても良い。The regulating wire 5 in the first configuration example
A plurality of wires 5 may be provided at symmetrical positions, or a blade-shaped wire may be used instead of the wire. Further, the notch and the sheet body in the second configuration example may be provided not only at one place but also at two or more places.
【００６８】前述したように、本実施例においては、少
なくともカバー用内視鏡の観察光学系窓に対応する位置
に設けた内視鏡カバーの透明窓を以下のように構成す
る。As described above, in this embodiment, at least the transparent window of the endoscope cover provided at a position corresponding to the observation optical system window of the cover endoscope is constructed as follows.
【００６９】（１）カバー用内視鏡またはマウスピー
ス，スライディングチューブ，トラカール等の内視鏡挿
入補助具の突起などに突き当たっても簡単には損傷しな
い程度の肉厚を有する。最低０．２mmできれば０．３〜
０．５mm位が良い。
（２）カバー用内視鏡の観察光学系窓外面、フレアシボ
リ、レンズ枠等の内視鏡先端におけるカバーへの当接部
材の硬度よりも軟らかい硬度を有する。具体的にはカバ
ー用内視鏡の観察光学系の第１面レンズにヌープ硬さ
［Ｈｋ］が３級（２５０以上）以上できれば４級（３５
０以上）以上のガラス材料を用い、カバーの透明窓にヌ
ープ硬さ［Ｈｋ］が２級以下（２５０未満）のガラス材
料または鉛筆硬度３Ｈ以下の硬度のプラスチック材料を
用いる。(1) The thickness of the cover endoscope or the mouthpiece, sliding tube, trocar or the like does not easily damage the protrusions of the endoscope insertion aid. If you can make at least 0.2mm, 0.3 ~
0.5mm is good. (2) Observing the endoscope for the cover, the hardness is softer than the hardness of a member that abuts the cover at the tip of the endoscope such as the outer surface of the optical system window, flare beam, and lens frame. Specifically, if the first surface lens of the observation optical system of the cover endoscope has a Knoop hardness [Hk] of 3rd grade (250 or more) or higher, it is 4th grade (35).
A glass material having a Knoop hardness of 2 or less (less than 250) or a plastic material having a pencil hardness of 3H or less is used for the transparent window of the cover.
【００７０】また、カバー用内視鏡の観察光学系窓の第
１面にコーティングした場合はそのコートの硬さがカバ
ーの透明窓の硬度よりも硬いものを用い、透明窓内面に
コーティングしたものは、観察光学系窓外面の硬度より
も軟らかいものを用いる。When the first surface of the observation optical system window of the endoscope for a cover is coated, the hardness of the coat is harder than that of the transparent window of the cover, and the inner surface of the transparent window is coated. Is softer than the hardness of the outer surface of the observation optical system window.
【００７１】このように構成することにより、内視鏡カ
バーの透明窓が容易に損傷することなく、かつカバー用
内視鏡の内視鏡カバーへの挿脱時に細心の注意を払わな
くても観察光学系窓が損傷することを防止できる。その
結果、鮮明な観察視野を維持することができる。With this configuration, the transparent window of the endoscope cover is not easily damaged, and even when the cover endoscope is inserted into or removed from the endoscope cover, no great care is taken. It is possible to prevent the observation optical system window from being damaged. As a result, a clear observation visual field can be maintained.
【００７２】また、内視鏡カバーの透明窓は、薄膜でな
く一定厚を有しているので、型による成形ができ、安価
で精度のよい内視鏡カバーを構成することができる。Further, since the transparent window of the endoscope cover is not a thin film but has a constant thickness, it can be molded by a mold, and an inexpensive and accurate endoscope cover can be constructed.
【００７３】なお、各構成要素の材質は前述の実施例に
限定されず、内視鏡カバーの透明窓の材料としては、Ｐ
Ｃ（ポリカーボ），ＰＳ（ポリスチレン），ＰＭＭＡ，
ＰＢＴ等を用いても良いし、内視鏡の観察光学系の第１
面レンズとしては、ヌープ硬さ３以上のいかなるガラス
硝材を用いても良く、カバーと内視鏡との組み合わせに
おいて観察光学系の第１面レンズを損傷させないように
なっていれば良い。The material of each component is not limited to the above-mentioned embodiment, and the material of the transparent window of the endoscope cover is P.
C (polycarbonate), PS (polystyrene), PMMA,
PBT or the like may be used, and the first observation optical system of the endoscope may be used.
As the surface lens, any glass glass material having a Knoop hardness of 3 or more may be used as long as it does not damage the first surface lens of the observation optical system in the combination of the cover and the endoscope.
【００７４】また、適用に関しても医療用以外にも原子
炉内等の観察に用いるために挿入部にカバーを被せて使
う工業用内視鏡においても同じ効果が得られ、適用可能
である。Further, with respect to application, the same effect can be obtained and applied to an industrial endoscope in which the insertion portion is covered with a cover for use in observing the inside of a nuclear reactor or the like other than medical use.
【００７５】また、本発明は発明の要旨を逸脱しない範
囲で種々変形実施可能であるのは言うまでもない。Needless to say, the present invention can be variously modified without departing from the scope of the invention.
【００７６】[0076]
【発明の効果】以上説明したように本発明によれば、内
視鏡カバーを内視鏡挿入部に被せる際に、内視鏡カバー
の透明窓に内視鏡の観察光学系窓が強く接触しても繰り
返し使用される内視鏡の観察光学系窓が損傷することな
く、鮮明な観察視野を維持することができる効果があ
る。As described above, according to the present invention, when the endoscope cover is put on the endoscope insertion portion, the transparent window of the endoscope cover strongly contacts the observation optical system window of the endoscope. Even if the observation optical system window of the endoscope used repeatedly is not damaged, a clear observation field of view can be maintained.
【図１】図１ないし図３は本発明の第１実施例に係り、
図１はカバー用内視鏡を接続した状態の内視鏡装置の全
体構成を示す斜視図1 to 3 relate to a first embodiment of the present invention,
FIG. 1 is a perspective view showing the entire configuration of an endoscope apparatus with a cover endoscope connected.
【図２】内視鏡カバーの挿入部カバー部にカバー用内視
鏡を装着した状態の構成を示す断面図FIG. 2 is a cross-sectional view showing a configuration in which a cover endoscope is attached to an insertion portion cover portion of the endoscope cover.
【図３】カバー先端部にカバー用内視鏡の先端支持部を
完全に装着した状態を示す光学系の拡大断面図FIG. 3 is an enlarged cross-sectional view of the optical system showing a state in which the tip support portion of the cover endoscope is completely attached to the cover tip portion.
【図４】本発明の第２実施例に係る内視鏡装置において
内視鏡カバー先端部にカバー用内視鏡の先端支持部を完
全に装着した状態を示す光学系の拡大断面図FIG. 4 is an enlarged cross-sectional view of the optical system showing a state in which the distal end support portion of the endoscope for cover is completely attached to the distal end portion of the endoscope cover in the endoscope apparatus according to the second embodiment of the present invention.
【図５】本発明の第３実施例に係る内視鏡装置において
内視鏡カバーにカバー用内視鏡を装着した状態の構成を
示す一部切り欠き断面図FIG. 5 is a partially cutaway sectional view showing the configuration of the endoscope device according to the third embodiment of the present invention in a state in which a cover endoscope is attached to an endoscope cover.
【図６】カバー装着時に内視鏡カバー拡張器を不要とし
たカバー方式の内視鏡装置の第１の構成例を示す軸方向
断面図FIG. 6 is an axial cross-sectional view showing a first configuration example of a cover type endoscope apparatus that does not require an endoscope cover extender when the cover is attached.
【図７】カバー装着時に内視鏡カバー拡張器を不要とし
たカバー方式の内視鏡装置の第２の構成例を示す横断方
向断面図FIG. 7 is a transverse cross-sectional view showing a second configuration example of a cover type endoscope apparatus which does not require an endoscope cover extender when the cover is attached.
７…カバー用内視鏡 １０…内視鏡カバー １１…挿入部カバー部 １６…カバー先端部 １７…透明窓 １９…挿入部 ２９…先端支持部 ３０…観察光学系 ３１，３３…第１面レンズ ３２…照明光学系 7 ... Cover endoscope 10 ... Endoscope cover 11 ... Insert section cover section 16 ... Tip of cover 17 ... Transparent window 19 ... Insertion part 29 ... Tip support 30 ... Observation optical system 31, 33 ... First surface lens 32 ... Illumination optical system
Claims (2)
備したカバー用内視鏡と、このカバー用内視鏡の挿入部
を覆い、少なくとも前記観察窓に対応する位置に透明窓
を設けた内視鏡カバーとを備えた内視鏡カバー方式の内
視鏡装置において、 前記内視鏡カバーの透明窓の少なくとも内面を、前記カ
バー用内視鏡の観察窓外面の硬度よりも軟らかく、か
つ、観察窓外面を強く押しつけて接触させても変形しな
い程度の硬度を有する硬質材料により構成したことを特
徴とする内視鏡カバー方式の内視鏡装置。1. An endoscope for a cover having an observation window at a tip supporting portion of an elongated insertion portion, and an insertion portion of the endoscope for a cover, and a transparent window at least at a position corresponding to the observation window. In an endoscope apparatus of an endoscope cover system provided with the provided endoscope cover, at least the inner surface of the transparent window of the endoscope cover is softer than the hardness of the observation window outer surface of the cover endoscope. , Or
The outer surface of the observation window does not deform even if pressed firmly against the outer surface.
An endoscope cover type endoscope apparatus characterized by being formed of a hard material having a certain degree of hardness .
観察窓外面の硬度がヌープ硬さ［Ｈｋ］３級（２５０以
上）以上のガラス材料を用い、また、前記内視鏡カバー
の透明窓として、該透明窓の少なくとも内面の硬度がヌ
ープ硬さ［Ｈｋ］２級（２５０未満）以下のガラス材料
または鉛筆硬度３Ｈ以下の硬質プラスチック材料を用い
たことを特徴とする請求項１に記載の内視鏡カバー方式
の内視鏡装置。 2. The observation window of the cover endoscope,
Knoop hardness [Hk] grade 3 (250 or higher)
Above) using the above glass materials, and also the endoscope cover
The hardness of at least the inner surface of the transparent window is
Glass material with a Boop hardness [Hk] of 2nd class (less than 250)
Or use a hard plastic material with a pencil hardness of 3H or less
The endoscope cover system according to claim 1, wherein
Endoscopic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14234193A JP3365820B2 (en) | 1993-06-14 | 1993-06-14 | Endoscope device with endoscope cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14234193A JP3365820B2 (en) | 1993-06-14 | 1993-06-14 | Endoscope device with endoscope cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07341A JPH07341A (en) | 1995-01-06 |
| JP3365820B2 true JP3365820B2 (en) | 2003-01-14 |
Family
ID=15313112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14234193A Expired - Fee Related JP3365820B2 (en) | 1993-06-14 | 1993-06-14 | Endoscope device with endoscope cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3365820B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12004708B2 (en) | 2020-04-30 | 2024-06-11 | Gyrus Acmi, Inc. | Insertion sheath for modular disposable endoscope components |
| US12004717B2 (en) | 2019-12-20 | 2024-06-11 | Gyrus Acmi, Inc. | Endoscope with detachable camera module |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3468952B2 (en) * | 1995-11-17 | 2003-11-25 | 株式会社町田製作所 | Medical endoscope |
| JP3468951B2 (en) * | 1995-11-17 | 2003-11-25 | 株式会社町田製作所 | Medical endoscope |
| US6416462B1 (en) * | 1999-01-19 | 2002-07-09 | Tyco Healthcare Group Lp | Sheath and applicator for surgical instrument |
| JP3689294B2 (en) | 1999-12-13 | 2005-08-31 | ペンタックス株式会社 | Endoscopic flexible tube and method for manufacturing endoscope flexible tube |
| JP2006239185A (en) * | 2005-03-04 | 2006-09-14 | Pentax Corp | Distal end part of side-viewing type endoscope |
| JP2008215742A (en) * | 2007-03-06 | 2008-09-18 | Matsushita Electric Ind Co Ltd | Ventilating device |
-
1993
- 1993-06-14 JP JP14234193A patent/JP3365820B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12004717B2 (en) | 2019-12-20 | 2024-06-11 | Gyrus Acmi, Inc. | Endoscope with detachable camera module |
| US12004708B2 (en) | 2020-04-30 | 2024-06-11 | Gyrus Acmi, Inc. | Insertion sheath for modular disposable endoscope components |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07341A (en) | 1995-01-06 |
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