JPH07184837A - Cover type endoscope - Google Patents
Cover type endoscopeInfo
- Publication number
- JPH07184837A JPH07184837A JP5331839A JP33183993A JPH07184837A JP H07184837 A JPH07184837 A JP H07184837A JP 5331839 A JP5331839 A JP 5331839A JP 33183993 A JP33183993 A JP 33183993A JP H07184837 A JPH07184837 A JP H07184837A
- Authority
- JP
- Japan
- Prior art keywords
- cover
- endoscope
- optical system
- tip
- lens
- 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.)
- Withdrawn
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、観察光学系及び照明光
学系を備えたカバー用内視鏡と、このカバー用内視鏡を
覆う内視鏡カバーとを備えるカバー式内視鏡に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover type endoscope having a cover endoscope having an observation optical system and an illumination optical system, and an endoscope cover for covering the cover endoscope.
【０００２】[0002]
【従来の技術】近年、内視鏡は工業分野・医療分野等に
おいて広く利用されている。特に、医療分野で使用する
内視鏡は、患者の体腔内に挿入した際、挿入部や先端部
に体液等が付着するため、一度使用した内視鏡を他の患
者に使用するときには、洗浄・滅菌処理等を十分に行い
内視鏡を介しての感染症等を確実に防ぐ必要があった。2. Description of the Related Art In recent years, endoscopes have been widely used in industrial fields, medical fields, and the like. In particular, endoscopes used in the medical field, when inserted into the body cavity of a patient, have body fluid and the like attached to the insertion part and the tip, so when using the endoscope once used for other patients, wash it. -It was necessary to thoroughly prevent sterilization, etc., and prevent infections, etc. through the endoscope.
【０００３】このため、最近、内視鏡自体をカバー（以
下内視鏡カバーと記載）で覆い体腔内に挿入し、床例毎
にこの内視鏡カバーを交換・廃棄することで使用後の内
視鏡の洗浄・消毒を簡略化するようにした、いわゆる、
カバー式内視鏡が採用されている。For this reason, recently, after the endoscope itself is covered with a cover (hereinafter referred to as an endoscope cover) and inserted into the body cavity, and the endoscope cover is replaced or discarded for each floor example, after use. The so-called, which is designed to simplify the cleaning and disinfection of endoscopes,
A cover-type endoscope is used.
【０００４】このカバー式内視鏡は、患者の体腔内に開
口する処置具挿通用チャンネル及び各種チャンネルや先
端の開口を光学部材で密閉し内視鏡挿通用チャンネルを
設けた内視鏡カバーと、患者の体腔内で開口させる必要
のない観察手段及び照明手段を設けたカバー用内視鏡と
を組合せて使用するように構成したものである。[0004] This cover-type endoscope includes a treatment instrument insertion channel that opens into the body cavity of a patient and an endoscope cover that is provided with an endoscope insertion channel by sealing various channels and the opening of the tip with an optical member. It is configured to be used in combination with a cover endoscope provided with an illuminating unit and an observing unit that does not need to be opened in the body cavity of the patient.
【０００５】前記カバー式内視鏡で再使用されるカバー
用内視鏡は、従来のカバー無しで用いられるタイプの内
視鏡（以下一般タイプ内視鏡と記載）とほぼ同構造であ
り、このカバー用内視鏡を内視鏡カバーに装着した際、
カバー用内視鏡の観察光学系及び照明光学系が内視鏡カ
バーに配設された光学部材（以下レンズカバーと記載）
に対設するようになっている。The cover endoscope to be reused in the cover type endoscope has almost the same structure as a conventional endoscope without a cover (hereinafter referred to as a general type endoscope), When this cover endoscope is attached to the endoscope cover,
An optical member in which the observation optical system and the illumination optical system of the cover endoscope are arranged in the endoscope cover (hereinafter referred to as a lens cover)
It is designed to be opposed to.
【０００６】しかし、上述のように構成されるカバー式
内視鏡ではカバー用内視鏡の照明光学系から出射した照
明光が内視鏡カバーに配設したレンズカバーの内側面に
反射し、レンズカバー内側面とカバー用内視鏡の先端面
との間で反射を繰り返し、最終的に反射光がカバー用内
視鏡の観察光学系に飛び込み、観察画像のフレア・ゴー
ストとなって観察に支障をきたしていた。However, in the cover-type endoscope constructed as described above, the illumination light emitted from the illumination optical system of the cover endoscope is reflected on the inner surface of the lens cover arranged in the endoscope cover, Reflection is repeated between the inner surface of the lens cover and the front end surface of the cover endoscope, and the reflected light eventually jumps into the observation optical system of the cover endoscope and becomes a flare ghost of the observation image for observation. I was having trouble.
【０００７】このため、特開平３−２６４０３７号公報
にはカバー用内視鏡の先端面の観察光学系と照明光学系
との間に遮光部を設け、この遮光部を対設するレンズカ
バーに密着させて、フレア・ゴーストを防止するように
したものが示されている。Therefore, in JP-A-3-264037, a light-shielding portion is provided between the observation optical system and the illumination optical system on the tip end surface of the cover endoscope, and a lens cover opposite to this light-shielding portion is provided. It is shown in close contact to prevent flare ghosts.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、前記特
開平３―２６４０３７号公報に示される構造では、カバ
ー用内視鏡に設けた遮光部が常にレンズカバーに密着す
るので負荷がかかり、レンズカバーの破損や脱落、或
は、光学部材と先端カバー部との接合部を損傷させて水
密性を損なう等の虞れがあった。However, in the structure disclosed in Japanese Unexamined Patent Publication No. 3-264037, the light-shielding portion provided in the cover endoscope is always brought into close contact with the lens cover, and thus a load is applied to the lens cover. There is a risk of damage, dropout, or damage to the joint between the optical member and the tip cover portion, impairing water tightness.
【０００９】本発明は上記事情に鑑みてなされたもので
あり、光学部材（レンズカバー）の破損や脱落の虞れの
無い、検査中良好な観察視野が得られるカバー式内視鏡
を提供することを目的としている。The present invention has been made in view of the above circumstances, and provides a cover-type endoscope capable of obtaining a good observation visual field during inspection without the risk of damage or drop-off of an optical member (lens cover). Is intended.
【００１０】[0010]
【課題を解決するための手段】本発明によるカバー式内
視鏡は、先端構成部に観察光学系及び照明光学系を配設
したカバー用内視鏡と、前記カバー用内視鏡の観察光学
系及び照明光学系に対設する透明な光学部材をカバー先
端部材に配設した内視鏡カバーとを組み合わせるカバー
式内視鏡であって、前記内視鏡カバーのカバー先端部材
の他部材との当接部を内視鏡カバーのカバー先端部材に
配設した光学部材以外のカバー先端部材に設けている。SUMMARY OF THE INVENTION A cover-type endoscope according to the present invention comprises a cover endoscope having an observation optical system and an illumination optical system at its distal end portion, and an observation optical system for the cover endoscope. A cover-type endoscope in which a transparent optical member that opposes the optical system and the illumination optical system is combined with an endoscope cover that is disposed in the cover tip member, and is a cover tip member of the endoscope cover and another member. Is provided on the cover tip member other than the optical member disposed on the cover tip member of the endoscope cover.
【００１１】[0011]
【作用】この構成によれば、カバー用内視鏡の先端構成
部の一部や他部材がカバー先端部材の光学部材を配設し
た以外のカバー先端部材に当接することによって、光学
部材に直接負荷がかからないので、光学部材の損傷や光
学部材とカバー先端部材との接合部の損傷が無くなる。According to this structure, a part of the distal end forming portion of the cover endoscope or another member comes into direct contact with the optical member by contacting the cover distal member other than the optical member of the cover distal member. Since no load is applied, damage to the optical member and damage to the joint between the optical member and the cover tip member are eliminated.
【００１２】[0012]
【実施例】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４は本発明の第１実施例に係り、図１は内
視鏡装置の概略構成を示す斜視図、図２はカバー式内視
鏡の先端部の構成を示す説明図、図３はカバー先端部材
の概略構成を示す説明図、図４はレンズカバーと先端構
成部材との関係を示す操作部側から見た図である。Embodiments of the present invention will be described with reference to the drawings.
1 to 4 relate to a first embodiment of the present invention, FIG. 1 is a perspective view showing a schematic configuration of an endoscope apparatus, and FIG. 2 is an explanatory view showing a configuration of a tip portion of a cover-type endoscope. 3 is an explanatory view showing a schematic configuration of a cover tip member, and FIG. 4 is a view showing a relationship between the lens cover and the tip constituting member as seen from the operation section side.
【００１３】図１に示すように内視鏡装置１は、カバー
式内視鏡２を有しており、このカバー式内視鏡２は送気
・送水・処置具チャンネルなどの各種チャンネルを設け
た内視鏡カバー３と、この内視鏡カバー３によって覆わ
れるカバー用内視鏡４との組み合わせから構成されてい
る。As shown in FIG. 1, the endoscope apparatus 1 has a cover-type endoscope 2, and this cover-type endoscope 2 is provided with various channels such as air supply, water supply, and treatment tool channels. The endoscope cover 3 and the cover endoscope 4 covered by the endoscope cover 3 are combined.
【００１４】内視鏡装置１は、カバー式内視鏡２に接続
される各種周辺機器を内設したカート５と、カバー式内
視鏡２を保持するカバー保持具６とを備えている。The endoscope apparatus 1 is provided with a cart 5 in which various peripheral devices connected to the cover-type endoscope 2 are installed, and a cover holder 6 for holding the cover-type endoscope 2.
【００１５】カート５には、例えば、光源装置７，ビデ
オプロセッサ８，流体制御装置９，内視鏡カバー拡張器
（以下拡張器と途略）１０などが収納され、カート５の
上面にはビデオプロセッサ８からの映像信号を受けて内
視鏡画像を表示するモニタ１１が載置されている カバー用内視鏡４は、細長の内視鏡挿入部１２の手元側
基端部に太径の把持部を兼ねた操作部１３を連設し、こ
の操作部１３の側部からユニバーサルコード１４を延出
している。このユニバーサルコード１４の端部には光源
装置７に接続するためのコネクタ１５が設けられてい
る。The cart 5 accommodates, for example, a light source device 7, a video processor 8, a fluid control device 9, an endoscope cover extender (hereinafter abbreviated as an extender) 10, and the like. The cover endoscope 4, on which a monitor 11 that receives an image signal from the processor 8 and displays an endoscope image is placed, has a large diameter at the proximal end of the elongated endoscope insertion portion 12 on the proximal side. The operating portion 13 also serving as a grip portion is continuously provided, and the universal cord 14 extends from the side portion of the operating portion 13. A connector 15 for connecting to the light source device 7 is provided at an end of the universal cord 14.
【００１６】光源装置７は、コネクタ１５を介してカバ
ー用内視鏡４と着脱自在に接続され、カバー用内視鏡４
に内設した照明光学系に照明光を供給して体腔内を照明
するようになっている。The light source device 7 is detachably connected to the cover endoscope 4 via the connector 15, and the cover endoscope 4 is attached.
Illumination light is supplied to an illumination optical system installed inside the body to illuminate the inside of the body cavity.
【００１７】ビデオプロセッサ８は、前記コネクタ１５
の側部から延出する信号ケーブル１６を介してカバー用
内視鏡４と着脱自在に接続され、カバー用内視鏡４に内
蔵した撮像手段の駆動及び、この撮像手段から出力され
た信号の信号処理を行い、標準的な映像信号に変換して
モニタ１１へ出力するようになっている。The video processor 8 has the connector 15
Is detachably connected to the cover endoscope 4 through a signal cable 16 extending from the side portion of the cover, and drives the image pickup means built in the cover endoscope 4 and outputs signals output from the image pickup means. Signal processing is performed, the signal is converted into a standard video signal and output to the monitor 11.
【００１８】拡張器１０は、拡張チューブ１７を介して
内視鏡カバー内に空気送り込むためのものであり、この
内視鏡カバー３に空気を送り込んで拡張することによっ
て、カバー用内視鏡４の内視鏡カバー３への装着、或
は、抜去が容易に行えるようになっている。このカバー
用内視鏡４に内視鏡カバー３を装着、或は、抜去する際
にはカバー保持具６を用い、このカバー保持具６によっ
て内視鏡カバー３の基端側が保持されるようになってい
る。The dilator 10 is for feeding air into the endoscope cover through the dilation tube 17, and by feeding air into the endoscope cover 3 to expand the endoscope, the cover endoscope 4 is expanded. Can be easily attached to or removed from the endoscope cover 3. When the endoscope cover 3 is attached to or detached from the cover endoscope 4, a cover holder 6 is used so that the base end side of the endoscope cover 3 is held by the cover holder 6. It has become.
【００１９】内視鏡カバー３は、軟性の挿入部カバー部
１８と、薄肉で軟性な、例えば塩化ビニル等の高分子材
料で形成された操作部カバー１９及びユニバーサルコー
ドカバー２０とを備えており、カバー用内視鏡４の内視
鏡挿入部１２、操作部１３、ユニバーサルコード１４を
それぞれ覆う構成となっている。The endoscope cover 3 is provided with a flexible insertion portion cover portion 18, a thin and flexible operation portion cover 19 and a universal cord cover 20 which are made of a polymer material such as vinyl chloride. The endoscope insertion section 12, the operation section 13, and the universal cord 14 of the cover endoscope 4 are respectively covered.
【００２０】なお、挿入部カバー部１８には挿入長を示
す長さ指標と、挿入部カバー部１８と内視鏡挿入部１２
のねじれを知るための指標となる長手方向への直線が挿
入部カバー部１８を押しつぶすなどして印刷されてい
る。また、印刷する代わりに挿入部カバー部１８の内部
に丸棒、或は、平板を挿入して挿入長を確認するように
してもよい。さらに、挿入部カバー部１８を内視鏡挿入
部１２に装着する際、挿入部カバー部１８は引き延ばさ
れて装着されるので、装着された時正規のの挿入長を示
すように予め間隔を短くして印刷してある。The insertion portion cover portion 18 has a length index indicating the insertion length, the insertion portion cover portion 18 and the endoscope insertion portion 12.
A straight line in the longitudinal direction, which serves as an index for knowing the twist, is printed by crushing the insertion portion cover portion 18. Further, instead of printing, a round bar or a flat plate may be inserted into the insertion portion cover portion 18 to check the insertion length. Further, when the insertion section cover section 18 is attached to the endoscope insertion section 12, the insertion section cover section 18 is extended and attached. Is printed short.
【００２１】流体制御装置９には挿入部カバー部１８か
ら延出している送気管路２４，送水管路２５、吸引管路
２６がそれぞれ接続されており、症例中、必要時に鉗子
挿入口２７から内視鏡カバー３に設けた鉗子チャンネル
内にレーザープローブ２８などを挿入して治療処置等を
行うことができるようにレーザー装置２９ａを備えてい
る。なお、符号２９ｂはレーザー光の照射をオン・オフ
するフットスイッチである。The fluid control device 9 is connected with an air supply pipe line 24, a water supply pipe line 25 and a suction pipe line 26 extending from the insertion portion cover part 18, respectively, and from the forceps insertion port 27 when necessary during a case. A laser device 29a is provided so that a laser probe 28 or the like can be inserted into a forceps channel provided in the endoscope cover 3 to perform a medical treatment or the like. The reference numeral 29b is a foot switch for turning on / off the irradiation of the laser beam.
【００２２】また、内視鏡挿入部１２の体腔内への挿入
性を向上させるためカバーの可撓性を以下のようにして
いる。内視鏡挿入部１２の先端側２０cmから４０cmを柔
かく手元側を比較的硬く構成すると共に、先端側の弾発
性を高く構成している。また、内視鏡挿入部１２の外皮
を金属螺旋板、鋼管、樹脂などで形成し、樹脂で形成す
る場合には肉厚を先端側で薄く手元側で厚くし、金属螺
旋管で形成する場合には肉厚、板幅、巻ピッチを変えた
り、螺旋を先端側で二重、手元側で三重に構成し、鋼管
で形成する場合には偏角を変えて密度を変化させてい
る。さらに、外皮の代わりに信号線等の内蔵物を被覆す
るチューブ肉厚、硬度、材質を変えたり、チューブやコ
イル等を内蔵させてもよい。又、先端側の弾発性を上げ
るために管路の先端側のみにコイルを被覆したり、外皮
の成形温度を長手方向で変化させて硬さを変えるなどす
ることもできる。更に、カバー用内視鏡と内視鏡カバー
とのクリアランスを先端側で大きくしても良く、内視鏡
カバーをマルチルーメンチューブで形成し先端側のルー
メンの数を増やしたり、ルーメンの大きさを変えて硬度
を変化させるようにしてもよい。尚、硬さを変化される
のは湾曲部と挿入部の間でも良く、同様の方法で実施す
ることができる。The flexibility of the cover is set as follows in order to improve the insertability of the endoscope insertion portion 12 into the body cavity. The distal end side 20 cm to 40 cm of the endoscope insertion portion 12 is soft and the proximal side is relatively hard, and the distal end side is highly resilient. When the outer cover of the endoscope insertion portion 12 is formed of a metal spiral plate, steel pipe, resin, or the like, and when it is formed of resin, the wall thickness is thin on the distal end side and thick on the proximal side, and is formed on the metal spiral pipe. The thickness, plate width and winding pitch are changed, and the helix is doubled on the tip side and triple on the hand side, and when it is formed of a steel pipe, the declination is changed to change the density. Further, instead of the outer cover, the wall thickness, hardness, and material of the tube that covers the internal material such as the signal line may be changed, or the tube, the coil, or the like may be incorporated. Further, in order to improve the elasticity of the tip side, the coil may be coated only on the tip side of the conduit, or the hardness may be changed by changing the molding temperature of the outer cover in the longitudinal direction. Further, the clearance between the cover endoscope and the endoscope cover may be increased on the distal end side, and the endoscope cover may be formed of a multi-lumen tube to increase the number of lumens on the distal end side or the size of the lumen. May be changed to change the hardness. The hardness may be changed between the bending portion and the insertion portion, and the same method can be used.
【００２３】図２（ｂ）に示すようにカバー用内視鏡４
の内視鏡挿入部１２の先端部分には先端構成部材４１が
配設されている。この先端構成部材４１には観察光学系
４２と照明光学系４４とが設けられている。そして、前
記観察光学系４２によって被写体像が結像する位置には
画像を伝達する観察画像伝達系（不図示）が設けられて
おり、前記照明光学系４４にはライトガイド（不図示）
が臨まれている。なお、観察画像伝達系及びライトガイ
ドは、内視鏡挿入部１２，操作部１３，ユニバーサルコ
ード１４を介して前記ビデオプロセッサ８，光源装置７
にそれぞれ接続されるようになっている。As shown in FIG. 2B, the cover endoscope 4 is used.
A tip forming member 41 is provided at the tip of the endoscope insertion portion 12. An observation optical system 42 and an illumination optical system 44 are provided on the tip constituent member 41. An observation image transmission system (not shown) for transmitting an image is provided at a position where a subject image is formed by the observation optical system 42, and a light guide (not shown) is provided for the illumination optical system 44.
Is facing. The observation image transmission system and the light guide are connected to the video processor 8 and the light source device 7 via the endoscope insertion portion 12, the operation portion 13 and the universal cord 14.
Are connected to each.
【００２４】一方、図３及び図２（ａ）に示すように内
視鏡カバー３の挿入部カバー部１８の先端部分に配設さ
れるカバー先端部材３１は、変性ＰＰＯ、硬質塩ビ等の
硬質で不透明なプラスチック材料で形成され、前記カバ
ー用内視鏡４に配設されている観察光学系４２及び照明
光学系４４に対設する位置にカバー先端部材３１の先端
側に向かって漸次内径が広くなるように傾斜面ｃを形成
した観察光学系用透孔３４及び照明光学系用透孔３３を
形成している。そして、この観察光学系用透孔３４及び
照明光学系用透孔３３の前面に形成したレンズカバー嵌
合用段部３２ａにアクリル，ポリカーボネート等の透明
プラスチック材料で形成した０．２ｍｍないし０．７ｍ
ｍ厚の平行平板のレンズカバー３２が配設されるように
なっている。なお、前記観察光学系用透孔３４及び照明
光学系用透孔３３の孔の外径寸法は、カバー先端部材３
１の手元側面３１ａで各光学系の外径より大きく形成さ
れている。また、符号３５は送気・送水ノズルであり、
符号３６は鉗子用開口（吸引用開口）である。On the other hand, as shown in FIGS. 3 and 2A, the cover tip member 31 provided at the tip portion of the insertion portion cover portion 18 of the endoscope cover 3 is made of a hard material such as modified PPO or hard PVC. Is formed of an opaque plastic material and has a gradual inner diameter toward the tip side of the cover tip member 31 at a position opposed to the observation optical system 42 and the illumination optical system 44 arranged in the cover endoscope 4. The observation optical system through hole 34 and the illumination optical system through hole 33, which are formed with the inclined surface c so as to be wide, are formed. The lens cover fitting step 32a formed on the front surface of the observation optical system through hole 34 and the illumination optical system through hole 33 is made of a transparent plastic material such as acrylic or polycarbonate and has a thickness of 0.2 mm to 0.7 m.
An m-thick parallel plate lens cover 32 is arranged. The outer diameters of the observation optical system through hole 34 and the illumination optical system through hole 33 are the same as those of the cover tip member 3.
The first side surface 31a is formed larger than the outer diameter of each optical system. Further, reference numeral 35 is an air / water feeding nozzle,
Reference numeral 36 is a forceps opening (suction opening).
【００２５】上述のように構成したカバー式内視鏡の作
用を説明する。内視鏡カバー３にカバー用内視鏡４を挿
入していくとカバー用内視鏡４の先端構成部材４１が内
視鏡カバー３のカバー先端部材３１に近接し、図４に示
すように先端構成部材４１の先端面４１ａがカバー先端
部材３１の手元側面３１ａに当接（図中ハッチング部）
して位置決めを終了する。The operation of the cover type endoscope configured as described above will be described. When the cover endoscope 4 is inserted into the endoscope cover 3, the tip constituent member 41 of the cover endoscope 4 comes close to the cover tip member 31 of the endoscope cover 3, and as shown in FIG. The front end surface 41a of the front end forming member 41 contacts the proximal side surface 31a of the cover front end member 31 (hatched portion in the figure).
Then the positioning is completed.
【００２６】この状態で光源装置７より照射された照明
光は、ライトガイド及び照明光学系４４を介して体腔内
に出射し、照明光によって照らされた体腔内を観察光学
系４２でとらえモニタ画面上に内視鏡画像を表示する。The illumination light emitted from the light source device 7 in this state is emitted into the body cavity through the light guide and the illumination optical system 44, and the observation optical system 42 captures the interior of the body cavity illuminated by the illumination light to monitor the screen. Display the endoscopic image on top.
【００２７】なお、照明光学系４４から出射された照明
光は、先端構成部材４１の先端面４１ａとカバー先端部
材３１の手元側面３１ａとが当接しているので、直接、
観察光学系４２に入射すること無く、カバーレンズ３２
から出射されている。The illuminating light emitted from the illuminating optical system 44 directly contacts the tip end surface 41a of the tip forming member 41 and the hand side surface 31a of the cover tip member 31.
The cover lens 32 does not enter the observation optical system 42.
Is emitted from.
【００２８】このように、内視鏡カバーのカバー先端部
材にカバーレンズを配設するレンズカバー嵌合用段部を
形成すると共に、このカバーレンズのカバー用内視鏡の
各光学系が対設する位置に光学系の外径より大きめな観
察光学系用透孔及び照明光学系用透孔を形成することに
よって、直接レンズカバーにカバー用内視鏡を当接させ
ることなく、カバー用内視鏡の先端構成部材の先端面を
内視鏡カバーのカバー先端部材の手元側面に当接させて
位置決め固定することができ、カバーガラスの破損や脱
落の虞れの無いカバー式内視鏡が得られる。As described above, the lens cover fitting step portion for disposing the cover lens is formed on the cover tip member of the endoscope cover, and each optical system of the cover endoscope of the cover lens is provided oppositely. By forming a through hole for the observation optical system and a through hole for the illumination optical system that are larger than the outer diameter of the optical system at the position, the cover endoscope does not directly contact the lens cover. The front end surface of the distal end constituent member can be positioned and fixed by abutting on the proximal side surface of the cover front end member of the endoscope cover, and a cover-type endoscope in which there is no risk of damage or falling of the cover glass is obtained. .
【００２９】また、カバー先端部材と先端構成部材とが
当接すると共に、レンズカバーと各光学系が観察光学系
用孔及び照明光学系用孔を介して対設することにより、
観察光学系の観察視野と対物光学系の照明領域とを完全
に仕切ることでいわゆるケラレ現象を防止することがで
きる。Further, the cover front end member and the front end constituting member are brought into contact with each other, and the lens cover and each optical system are provided so as to face each other through the observation optical system hole and the illumination optical system hole.
A so-called vignetting phenomenon can be prevented by completely partitioning the observation visual field of the observation optical system and the illumination area of the objective optical system.
【００３０】なお、レンズカバーは、前述のように平行
平板でもよいが、照明光学系より照射された照明光がレ
ンズカバーの内部で反射を繰り返し、最終的に観察光学
系に飛び込むのを防ぐため、図５に示すようにレンズカ
バー３２′の外側面の観察光学系４２と照明光学系４４
との間の領域に、ノコ刃状に形成した溝からなる反射光
散乱部５１を設けることによって、レンズカバー内に入
ってきた照明光を反射光散乱部５１で反射を繰り返えさ
せて減衰させ、反射光が観察光学系４２に入射すること
がなくなる。The lens cover may be a parallel plate as described above, but in order to prevent the illumination light emitted from the illumination optical system from repeatedly reflecting inside the lens cover and finally jumping into the observation optical system. As shown in FIG. 5, the observation optical system 42 and the illumination optical system 44 on the outer surface of the lens cover 32 '.
By providing the reflected light scattering portion 51 composed of a groove formed in the shape of a saw blade in a region between and, the illumination light entering the lens cover is repeatedly reflected by the reflected light scattering portion 51 and attenuated. Then, the reflected light does not enter the observation optical system 42.
【００３１】また、レンズカバー内での照明光の反射に
よる観察光学系への入射を防ぐため図６に示すように観
察光学系用のレンズカバー３２Ａと照明光学系用のレン
ズカバー３２Ｂとをそれぞれ別々に設けてもよく、また
図７に示すようにレンズカバー３２の観察光学系４２と
照明光学系４４との間に反射光の通過を妨げる遮光孔５
２を設けてもよい、さらに、図８に示すようにレンズカ
バー３２の形状を反射光の通過を妨げるように凹部５３
を形成した形状にしてもよい。Further, as shown in FIG. 6, a lens cover 32A for the observation optical system and a lens cover 32B for the illumination optical system are respectively provided to prevent the illumination light from reflecting inside the lens cover from entering the observation optical system. They may be provided separately, or as shown in FIG. 7, the light blocking hole 5 between the observation optical system 42 and the illumination optical system 44 of the lens cover 32 that blocks the passage of reflected light.
2 may be provided. Further, as shown in FIG. 8, the shape of the lens cover 32 is formed into a recess 53 so as to prevent passage of reflected light.
You may make it the shape which formed.
【００３２】なお、前記図６ないし図８においてハッチ
ングした部分は先端構成部材４１とカバー先端部材３１
との当接部である。その他の構成及び作用・効果は前記
実施例と同様であり、同部材には同符号を付して説明を
省略する。The hatched portions in FIGS. 6 to 8 are the tip constituting member 41 and the cover tip member 31.
And the contact portion. Other configurations, operations, and effects are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.
【００３３】一方、カバー先端部材３１の観察光学系用
透孔３４及び照明光学系用透孔３３以外の手元側面３１
ａに当接する当接部を以下のように先端構成部材４１と
別体に設けることもできる。On the other hand, the side surface 31 of the cover front end member 31 other than the observation optical system through hole 34 and the illumination optical system through hole 33.
The contact portion that contacts a can be provided separately from the tip forming member 41 as follows.
【００３４】すなわち、図９及び図１０に示すように本
実施例においてはカバー用内視鏡３の先端構成部材３１
にカバー先端部材３１の手元側面３１ａに当接する遮光
仕切り部材６１を設けている。遮光仕切り部材６１は、
に厚さ０．１ないし０．３mm程度の真鍮、ステンレス等
の金属表面を黒処理したり、不透明樹脂部材で形成され
た硬質部材である。That is, as shown in FIGS. 9 and 10, in the present embodiment, the distal end constituent member 31 of the cover endoscope 3 is used.
Further, a light shielding partition member 61 that comes into contact with the side surface 31a of the cover front end member 31 is provided. The light shielding partition member 61 is
It is a hard member having a thickness of about 0.1 to 0.3 mm, which is made of an opaque resin member, such as a metal surface of brass, stainless steel, or the like, which is black-treated.
【００３５】なお、当接部はレンズカバー３２の外側領
域となっている。この遮光仕切り部材５０の形状はハッ
チング部分で示す通りであり、観察光学系４２及び照明
光学系４４を含む領域に観察光学系用透孔３４′及び照
明光学系用透孔３３′を設け、この観察光学系用透孔３
４′と照明光学系用透孔３３′との間に遮光部６２を形
成している。レンズカバー３２と遮光部６２との間隙
は、０．１ｍｍないし０．２mm程度が望ましいが、カバ
ー先端部材３１の手元側面３１ａと面一致であってもよ
い。このとき、先端カバー部材３１には遮光仕切り部材
６１の押圧力がかかっているので、遮光部６２がレンズ
カバー３２を押圧することが無い。その他の構成は前記
実施例と同様であり、同部材には同符号を付して説明を
省略する。The contact portion is located outside the lens cover 32. The shape of the light shielding partition member 50 is as shown by the hatched portion, and an observation optical system through hole 34 'and an illumination optical system through hole 33' are provided in a region including the observation optical system 42 and the illumination optical system 44. Through hole 3 for observation optical system
A light shielding portion 62 is formed between 4'and the illumination optical system through hole 33 '. The gap between the lens cover 32 and the light shielding portion 62 is preferably about 0.1 mm to 0.2 mm, but may be flush with the proximal side surface 31 a of the cover tip member 31. At this time, since the pressing force of the light shielding partition member 61 is applied to the tip cover member 31, the light shielding portion 62 does not press the lens cover 32. Other configurations are the same as those of the above-described embodiment, the same members are designated by the same reference numerals, and description thereof will be omitted.
【００３６】このように、カバー先端部材と先端構成部
材とは別体、且つ、遮光部材と当接部材とを兼ねる薄肉
高硬度板で遮光仕切り部材を形成することによって、カ
バー式内視鏡の外径を太径にすることなくレンズカバー
内面と観察光学系及び照明光学系の外表面との間隔を狭
ばめることができ光学性能を向上させることができる。
その他の効果は前記実施例と同様である。As described above, the cover front end member and the front end constituent member are separate bodies, and the light shielding partition member is formed of a thin high-hardness plate that also serves as the light shielding member and the contact member. The distance between the inner surface of the lens cover and the outer surfaces of the observation optical system and the illumination optical system can be narrowed without increasing the outer diameter, and the optical performance can be improved.
Other effects are the same as those in the above-mentioned embodiment.
【００３７】図１１は前記図９及び図１０の応用例であ
り、遮光仕切り部材６１を硬質部材で形成する代わり
に、金属あるいは樹脂等の硬質部６５ａとゴムあるいは
軟質樹脂等の軟質部６５ｂの二層構造で構成している。
なお、硬質部６５ａ及び軟質部６５ｂは共に無光沢黒色
の表面状態となっている。その他の構成は前記実施例と
同様であり、同部材には同符号を付して説明を省略す
る。FIG. 11 is an application example of FIGS. 9 and 10, wherein instead of forming the light shielding partition member 61 with a hard member, a hard portion 65a made of metal or resin and a soft portion 65b made of rubber or soft resin are used. It has a two-layer structure.
The hard portion 65a and the soft portion 65b are both in a matte black surface state. Other configurations are the same as those of the above-described embodiment, the same members are designated by the same reference numerals, and description thereof will be omitted.
【００３８】このように、遮光仕切り部材を硬質部と軟
質部とで構成することにより、軟質部の密着性が増して
内視鏡カバー内部でのカバー用内視鏡のずれを防ぐこと
ができる。また、カバー先端部材に先端構成部材から突
発的に過大な負荷がかかるような状況において軟質部が
その衝撃を柔らげる効果がある。その他の作用及び効果
は前記実施例と同様である。As described above, by constructing the light-shielding partition member with the hard portion and the soft portion, the adhesion of the soft portion is increased, and the cover endoscope can be prevented from being displaced inside the endoscope cover. . Further, the soft portion has an effect of softening the impact in a situation where an excessive load is suddenly applied to the cover tip member from the tip constituent member. Other functions and effects are similar to those of the above-mentioned embodiment.
【００３９】さらに、図１２は前記図１１の変形例であ
り、図に示すにように先端構成部材３１の先端側に弾性
材からなる遮光仕切り部材６５′を装着したカバー用内
視鏡４を内視鏡カバー３に挿入してカバー式内視鏡２を
構成するようにしている。その他の構成は前記実施例と
同様であり、同部材には同符号を付して説明を省略す
る。Further, FIG. 12 shows a modified example of FIG. 11, in which the cover endoscope 4 having a light-shielding partition member 65 'made of an elastic material attached to the front end side of the front end constituting member 31 as shown in FIG. The cover type endoscope 2 is configured to be inserted into the endoscope cover 3. Other configurations are the same as those of the above-described embodiment, the same members are designated by the same reference numerals, and description thereof will be omitted.
【００４０】このように、先端構成部材に遮光仕切り部
材を装着できるようにすることにより、カバー用内視鏡
を内視鏡カバーに装着する作業が容易になると共に、こ
の弾性材からなる遮光部材の外径をカバー先端部材の内
径よりわずかに大きく形成することによって、カバー用
内視鏡と内視鏡カバーとを確実に接続固定する固定部材
としての機能を兼用することができる。その他の作用及
び効果は前記実施例と同様である。By allowing the light-shielding partition member to be attached to the distal end constituent member in this manner, the work of attaching the cover endoscope to the endoscope cover is facilitated and the light-shielding member made of this elastic material is used. By forming the outer diameter of the cover slightly larger than the inner diameter of the cover tip member, the cover endoscope and the endoscope cover can also function as a fixing member for surely connecting and fixing the cover endoscope and the endoscope cover. Other functions and effects are similar to those of the above-mentioned embodiment.
【００４１】ところで、内視鏡カバーとカバー用内視鏡
との間の抵抗が大きいと挿抜がやり難かったり、湾曲性
を低下させるという不具合があった。そこで以下のよう
にカバー式内視鏡を構成することによって上記不具合を
解説することができる。By the way, if the resistance between the endoscope cover and the cover endoscope is large, there are problems that it is difficult to insert and remove, and the bendability is reduced. Therefore, the above-mentioned inconvenience can be explained by configuring the cover type endoscope as follows.
【００４２】図１３に示すように内視鏡カバー３の挿入
部は、軟質で、且つ、気密なウレタンや塩ビ等のチュー
ブ素材からなる外側シース７１の内側に、滑り性が良好
で軟質なチューブ素材からなるカバー用内視鏡４を挿通
するための内視鏡挿通用チューブ７２を備えている。こ
の内視鏡挿通用チューブ７２は、挿通されるカバー用内
視鏡４の外径寸法よりもやや大きい内径を有するチュー
ブ素材から形成されている。As shown in FIG. 13, the insertion portion of the endoscope cover 3 has a soft and soft tube inside the outer sheath 71 made of a soft and airtight tube material such as urethane or PVC. An endoscope insertion tube 72 for inserting the cover endoscope 4 made of a material is provided. The endoscope insertion tube 72 is formed of a tube material having an inner diameter slightly larger than the outer diameter dimension of the cover endoscope 4 to be inserted.
【００４３】また、外側シース７１と内視鏡挿通用チュ
ーブ７２の間隙部７３には鉗子用チャンネル７４，送気
管路７５及び送水管路７６が配設されている。そして、
外側シース７１の内側で、且つ、内視鏡挿通用チューブ
７２，鉗子用チャンネル７４，送気管路７５及び送水管
路７６外側空間には片栗粉やコーンスターチのような人
体に無害な潤滑剤７７が封入または塗布されている。Further, a forceps channel 74, an air supply conduit 75 and a water supply conduit 76 are provided in the gap 73 between the outer sheath 71 and the endoscope insertion tube 72. And
Inside the outer sheath 71 and inside the endoscope insertion tube 72, forceps channel 74, air supply conduit 75 and water supply conduit 76, an outer space is filled with a lubricant 77 such as potato starch or corn starch that is harmless to the human body. Or it is applied.
【００４４】このように、外側シースの内側で内視鏡挿
通用チューブ，鉗子用チャンネル，送気管路及び送水管
路外側空間に人体に無害な潤滑剤を封入することによっ
て、内視鏡カバーへのカバー用内視鏡の挿入性が向上す
る。As described above, by enclosing the endoscope insertion tube, the forceps channel, the air supply conduit and the water supply conduit outer space inside the outer sheath with a lubricant harmless to the human body, the endoscope cover is closed. The insertability of the cover endoscope is improved.
【００４５】また、外側シースの内部で各チューブ類が
潤滑剤の潤滑作用により自由に動くことが可能となるの
で、各チューブの座屈等のチューブ異常を防ぐことがで
きる。Further, since each tube can freely move inside the outer sheath by the lubricating action of the lubricant, it is possible to prevent tube abnormality such as buckling of each tube.
【００４６】ところで、内視鏡カバーに配設されるレン
ズカバーが軟質樹脂などで形成される場合、内視鏡カバ
ーがむき出しの状態だと傷などがついて観察に支障を来
す虞れがある。また、カバー式内視鏡では症例毎にカバ
ー交換を行うためその都度ホワイトバランスをとってい
た。そこで、以下のような保護部材を形成することによ
ってレンズカバーを保護すると共に、ホワイトバランス
を容易にとることができる。By the way, when the lens cover arranged on the endoscope cover is made of a soft resin or the like, if the endoscope cover is in a bare state, it may be scratched and hinder observation. . In the case of a cover-type endoscope, the cover is exchanged for each case, so white balance is taken each time. Therefore, by forming the following protective member, the lens cover can be protected and the white balance can be easily achieved.
【００４７】図１４に示すように内視鏡カバー３のカバ
ー先端部材３１に配設されるレンズカバー３２の破損を
防止するため、内視鏡カバー３のカバー先端部材３１白
色の保護キャップ８１を取り付けている。As shown in FIG. 14, in order to prevent damage to the lens cover 32 disposed on the cover tip member 31 of the endoscope cover 3, a white protective cap 81 for the cover tip member 31 of the endoscope cover 3 is provided. It is attached.
【００４８】このように、カバー先端部材に保護キャッ
プを取り付けることにより、レンズカバーの損傷を防止
することが可能となる。また、保護キャップを白色で形
成したことにより、内視鏡検査前に必ず行う固体撮像系
のホワイトバランスチェックを容易に行うことが可能と
なる。さらに、図１５に示すように保護キャップ８１を
内視鏡カバー３の保護カバー（オーバーチューブ）８２
に設けるようにしても同様の効果を得られる。As described above, by attaching the protective cap to the cover tip member, it is possible to prevent the lens cover from being damaged. Further, by forming the protective cap in white, it is possible to easily perform the white balance check of the solid-state imaging system that is always performed before the endoscopic examination. Further, as shown in FIG. 15, a protective cap 81 is attached to the protective cover (overtube) 82 of the endoscope cover 3.
The same effect can be obtained by providing the above.
【００４９】[0049]
【発明の効果】上述のように本発明によれば、レンズカ
バーの破損や脱落の虞れの無い、検査中良好な観察視野
が得られるカバー式内視鏡を提供することができる。As described above, according to the present invention, it is possible to provide a cover-type endoscope capable of obtaining a good observation visual field during an inspection without the risk of damage or dropping of the lens cover.
【図１】図１ないし図４は本発明の一実施例に係り、図
１は内視鏡装置の概略構成を示す斜視図FIG. 1 to FIG. 4 relate to an embodiment of the present invention, and FIG. 1 is a perspective view showing a schematic configuration of an endoscope apparatus.
【図２】カバー式内視鏡の先端部の構成を示す説明図FIG. 2 is an explanatory diagram showing a configuration of a tip portion of a cover-type endoscope.
【図３】カバー先端部材の概略構成を示す説明図FIG. 3 is an explanatory view showing a schematic configuration of a cover tip member.
【図４】レンズカバーと先端構成部材との関係を示す操
作部側から見た図FIG. 4 is a view showing the relationship between the lens cover and the tip end forming member as viewed from the operation section side.
【図５】レンズカバーに設けた反射光散乱部を示す図FIG. 5 is a diagram showing a reflected light scattering portion provided on a lens cover.
【図６】各光学系毎にレンズカバーを配設した状態を手
元側から見たときの図FIG. 6 is a diagram of a state in which a lens cover is provided for each optical system, as viewed from the hand side.
【図７】反射光遮光部を設けたレンズカバーを手元側か
ら見たときの図FIG. 7 is a diagram of a lens cover provided with a reflected light shielding unit as viewed from a hand side.
【図８】レンズカバーの反射光遮光部の他の例を手元側
から見たときの図FIG. 8 is a diagram of another example of the reflected light shielding portion of the lens cover when viewed from the hand side.
【図９】カバー式内視鏡の先端部に遮光仕切り部材を配
設したときの説明図FIG. 9 is an explanatory diagram when a light shielding partition member is provided at the tip of the cover-type endoscope.
【図１０】図９のカバー式内視鏡を手元側から見たとき
の図FIG. 10 is a view of the cover-type endoscope of FIG. 9 when viewed from the hand side.
【図１１】遮光仕切り部材の他の例を示す説明図FIG. 11 is an explanatory view showing another example of the light shielding partition member.
【図１２】遮光仕切り部材の別の例を示す説明図FIG. 12 is an explanatory view showing another example of the light shielding partition member.
【図１３】カバー式内視鏡の挿入部内の構成を示す図FIG. 13 is a diagram showing a configuration inside an insertion portion of a cover-type endoscope.
【図１４】カバー式内視鏡と保護キャップとの関係を示
す図FIG. 14 is a diagram showing a relationship between a cover-type endoscope and a protective cap.
【図１５】カバー式内視鏡と保護カバーと保護キャップ
との関係を示す図FIG. 15 is a diagram showing a relationship between a cover-type endoscope, a protective cover, and a protective cap.
２…カバー式内視鏡 ３…内視鏡カバー ４…カバー用内視鏡 ３１…カバー先端部材 ３２…レンズカバー ４１…先端構成部材 ４２…観察光学系 ４４…照明光学系 2 ... Cover-type endoscope 3 ... Endoscope cover 4 ... Cover endoscope 31 ... Cover tip member 32 ... Lens cover 41 ... Tip constituent member 42 ... Observation optical system 44 ... Illumination optical system
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年２月２２日[Submission date] February 22, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２２[Name of item to be corrected] 0022
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２２】また、内視鏡挿入部１２の体腔内への挿入
性を向上させるためカバーの可撓性を以下のようにして
いる。内視鏡挿入部１２の先端側２０cmから４０cmを柔
かく手元側を比較的硬く構成すると共に、先端側の弾発
性を高く構成している。また、内視鏡挿入部１２の外皮
を金属螺旋板、網管、樹脂などで形成し、樹脂で形成す
る場合には肉厚を先端側で薄く手元側で厚くし、金属螺
旋管で形成する場合には肉厚、板幅、巻ピッチを変えた
り、螺旋を先端側で二重、手元側で三重に構成し、網管
で形成する場合には偏角を変えて密度を変化させてい
る。さらに、外皮の代わりに信号線等の内蔵物を被覆す
るチューブ肉厚、硬度、材質を変えたり、チューブやコ
イル等を内蔵させてもよい。又、先端側の弾発性を上げ
るために管路の先端側のみにコイルを被覆したり、外皮
の成形温度を長手方向で変化させて硬さを変えるなどす
ることもできる。更に、カバー用内視鏡と内視鏡カバー
とのクリアランスを先端側で大きくしても良く、内視鏡
カバーをマルチルーメンチューブで形成し先端側のルー
メンの数を増やしたり、ルーメンの大きさを変えて硬度
を変化させるようにしてもよい。尚、硬さを変化される
のは湾曲部と挿入部の間でも良く、同様の方法で実施す
ることができる。The flexibility of the cover is set as follows in order to improve the insertability of the endoscope insertion portion 12 into the body cavity. The distal end side 20 cm to 40 cm of the endoscope insertion portion 12 is soft and the proximal side is relatively hard, and the distal end side is highly resilient. Further, when the outer cover of the endoscope insertion portion 12 is formed of a metal spiral plate, a mesh tube, resin, or the like, and when it is formed of resin, the wall thickness is thin at the distal end side and thick at the proximal side, and is formed by the metal spiral tube. In this case, the wall thickness, plate width, and winding pitch may be changed, or the helix may be doubled on the tip side and triple on the hand side. When forming a net tube, the angle of deviation is changed to change the density. . Further, instead of the outer cover, the wall thickness, hardness, and material of the tube that covers the internal material such as the signal line may be changed, or the tube, the coil, or the like may be incorporated. Further, in order to improve the elasticity of the tip side, the coil may be coated only on the tip side of the conduit, or the hardness may be changed by changing the molding temperature of the outer cover in the longitudinal direction. Further, the clearance between the cover endoscope and the endoscope cover may be increased on the distal end side, and the endoscope cover may be formed of a multi-lumen tube to increase the number of lumens on the distal end side or the size of the lumen. May be changed to change the hardness. The hardness may be changed between the bending portion and the insertion portion, and the same method can be used.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２７[Name of item to be corrected] 0027
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２７】なお、照明光学系４４から出射された照明
光は、先端構成部材４１の先端面４１ａとカバー先端部
材３１の手元側面３１ａとが当接しているので、直接、
観察光学系４２に入射すること無く、レンズカバー３２
から出射されている。The illuminating light emitted from the illuminating optical system 44 directly contacts the tip end surface 41a of the tip forming member 41 and the hand side surface 31a of the cover tip member 31.
The lens cover 32 does not enter the observation optical system 42.
Is emitted from.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２８[Correction target item name] 0028
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２８】このように、内視鏡カバーのカバー先端部
材にレンズカバーを配設するレンズカバー嵌合用段部を
形成すると共に、このレンズカバーのカバー用内視鏡の
各光学系が対設する位置に光学系の外径より大きめな観
察光学系用透孔及び照明光学系用透孔を形成することに
よって、直接レンズカバーにカバー用内視鏡を当接させ
ることなく、カバー用内視鏡の先端構成部材の先端面を
内視鏡カバーのカバー先端部材の手元側面に当接させて
位置決め固定することができ、レンズカバーの破損や脱
落の虞れの無いカバー式内視鏡が得られる。[0028] Thus, to form the lens cover the recessed portion to dispose the lens cover to cover the tip member of the endoscope cover, each of the optical systems of the cover endoscope lens cover is paired set By forming a through hole for the observation optical system and a through hole for the illumination optical system that are larger than the outer diameter of the optical system at the position, the cover endoscope does not directly contact the lens cover. It is possible to obtain a cover-type endoscope in which the front end surface of the front end constituent member can be positioned and fixed by abutting on the proximal side surface of the cover front end member of the endoscope cover, and there is no risk of damage or dropout of the lens cover. .
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２９[Name of item to be corrected] 0029
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２９】また、カバー先端部材に設けられた観察光
学系用透孔及び照明光学系用透孔は、先端側に向かって
漸次内径が広くなるように傾斜面Ｃを形成していること
により、観察光学系及び照明光学系に対するいわゆるケ
ラレ現象を防止することができる。Further, the observation light provided on the tip member of the cover
For the academic system and the illumination optical system
The inclined surface C is formed so that the inner diameter gradually increases.
This makes it possible to prevent a so-called vignetting phenomenon with respect to the observation optical system and the illumination optical system .
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３５[Correction target item name] 0035
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００３５】なお、当接部はレンズカバー３２の外側領
域となっている。この遮光仕切り部材６１の形状はハッ
チング部分で示す通りであり、観察光学系４２及び照明
光学系４４を含む領域に観察光学系用透孔３４′及び照
明光学系用透孔３３′を設け、この観察光学系用透孔３
４′と照明光学系用透孔３３′との間に遮光部６２を形
成している。レンズカバー３２と遮光部６２との間隙
は、０．１ｍｍないし０．２mm程度が望ましいが、カバ
ー先端部材３１の手元側面３１ａと面一致であってもよ
い。このとき、先端カバー部材３１には遮光仕切り部材
６１の押圧力がかかっているので、遮光部６２がレンズ
カバー３２を押圧することが無い。その他の構成は前記
実施例と同様であり、同部材には同符号を付して説明を
省略する。The contact portion is located outside the lens cover 32. The shape of the light shielding partition member 61 is as shown by the hatched portion, and an observation optical system through hole 34 'and an illumination optical system through hole 33' are provided in a region including the observation optical system 42 and the illumination optical system 44. Through hole 3 for observation optical system
A light shielding portion 62 is formed between 4'and the illumination optical system through hole 33 '. The gap between the lens cover 32 and the light shielding portion 62 is preferably about 0.1 mm to 0.2 mm, but may be flush with the proximal side surface 31 a of the cover tip member 31. At this time, since the pressing force of the light shielding partition member 61 is applied to the tip cover member 31, the light shielding portion 62 does not press the lens cover 32. Other configurations are the same as those of the above-described embodiment, the same members are designated by the same reference numerals, and description thereof will be omitted.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００４１[Correction target item name] 0041
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００４１】ところで、内視鏡カバーとカバー用内視鏡
との間の抵抗が大きいと挿抜がやり難かったり、湾曲性
を低下させるという不具合があった。そこで以下のよう
にカバー式内視鏡を構成することによって上記不具合を
解決することができる。By the way, if the resistance between the endoscope cover and the cover endoscope is large, there are problems that it is difficult to insert and remove, and the bendability is reduced. Therefore, by constructing a cover-type endoscope as follows,
Can be resolved .
Claims (1)
を配設したカバー用内視鏡と、前記カバー用内視鏡の観
察光学系及び照明光学系に対設する透明な光学部材をカ
バー先端部材に配設した内視鏡カバーとを組み合わせる
カバー式内視鏡において、 前記内視鏡カバーのカバー先端部材の他部材との当接部
を内視鏡カバーのカバー先端部材に配設した光学部材以
外のカバー先端部材に設けることを特徴とするカバー式
内視鏡。1. An endoscope for a cover having an observation optical system and an illumination optical system arranged at a distal end forming portion, and a transparent optical member opposite to the observation optical system and the illumination optical system of the cover endoscope. In a cover-type endoscope that is combined with an endoscope cover provided on a cover tip member, a contact portion of the endoscope tip cover with another member of the cover tip member is provided on the cover tip member of the endoscope cover. A cover-type endoscope provided on a cover tip member other than the optical member.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5331839A JPH07184837A (en) | 1993-12-27 | 1993-12-27 | Cover type endoscope |
| US08/361,678 US5674182A (en) | 1993-02-26 | 1994-12-22 | Endoscope system including endoscope and protection cover |
| US08/467,905 US5779625A (en) | 1993-02-26 | 1995-06-06 | Endoscope system including endoscope and protection cover |
| US08/593,844 US5738630A (en) | 1993-02-26 | 1996-01-30 | Endoscope system including endoscope and protection cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5331839A JPH07184837A (en) | 1993-12-27 | 1993-12-27 | Cover type endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07184837A true JPH07184837A (en) | 1995-07-25 |
Family
ID=18248233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5331839A Withdrawn JPH07184837A (en) | 1993-02-26 | 1993-12-27 | Cover type endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07184837A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002051968A (en) * | 2000-08-11 | 2002-02-19 | Asahi Optical Co Ltd | Electronic endoscope |
| JP2003235788A (en) * | 2002-02-12 | 2003-08-26 | Olympus Winter & Ibe Gmbh | Endoscope having window covering light transmitter and image transmitter |
| JP2004261408A (en) * | 2003-03-03 | 2004-09-24 | Pentax Corp | Manufacturing method of transparent cap of endoscope with jacket sheath |
| JP2006296698A (en) * | 2005-04-20 | 2006-11-02 | Pentax Corp | Protective end cap for endoscope |
| JP2006304813A (en) * | 2005-04-26 | 2006-11-09 | Pentax Corp | Distal end protection cap for endoscope |
| JP2006325690A (en) * | 2005-05-24 | 2006-12-07 | Pentax Corp | Distal end protective cap for endoscope |
| JP2006341088A (en) * | 2005-05-13 | 2006-12-21 | Ethicon Endo Surgery Inc | Improved sheath for endoscope |
| JP2007151989A (en) * | 2005-12-08 | 2007-06-21 | Pentax Corp | Tip end protection cap for endoscope |
| JP2007313172A (en) * | 2006-05-29 | 2007-12-06 | Pentax Corp | Distal end protection cap for endoscope |
| JP2007313039A (en) * | 2006-05-26 | 2007-12-06 | Pentax Corp | Distal end protection cap of endoscope |
| JP2007330421A (en) * | 2006-06-14 | 2007-12-27 | Pentax Corp | Head end protection cap of endoscope |
| US7764304B2 (en) | 1999-11-15 | 2010-07-27 | Given Imaging Ltd. | Method for activating an image collecting process |
| US7931149B2 (en) | 2009-05-27 | 2011-04-26 | Given Imaging Ltd. | System for storing and activating an in vivo imaging capsule |
-
1993
- 1993-12-27 JP JP5331839A patent/JPH07184837A/en not_active Withdrawn
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7764304B2 (en) | 1999-11-15 | 2010-07-27 | Given Imaging Ltd. | Method for activating an image collecting process |
| JP2002051968A (en) * | 2000-08-11 | 2002-02-19 | Asahi Optical Co Ltd | Electronic endoscope |
| JP2003235788A (en) * | 2002-02-12 | 2003-08-26 | Olympus Winter & Ibe Gmbh | Endoscope having window covering light transmitter and image transmitter |
| JP2004261408A (en) * | 2003-03-03 | 2004-09-24 | Pentax Corp | Manufacturing method of transparent cap of endoscope with jacket sheath |
| JP2006296698A (en) * | 2005-04-20 | 2006-11-02 | Pentax Corp | Protective end cap for endoscope |
| JP4681928B2 (en) * | 2005-04-20 | 2011-05-11 | Ｈｏｙａ株式会社 | Endoscope protective cap |
| JP2006304813A (en) * | 2005-04-26 | 2006-11-09 | Pentax Corp | Distal end protection cap for endoscope |
| JP4681930B2 (en) * | 2005-04-26 | 2011-05-11 | Ｈｏｙａ株式会社 | Endoscope protective cap |
| JP2006341088A (en) * | 2005-05-13 | 2006-12-21 | Ethicon Endo Surgery Inc | Improved sheath for endoscope |
| JP2006325690A (en) * | 2005-05-24 | 2006-12-07 | Pentax Corp | Distal end protective cap for endoscope |
| JP2007151989A (en) * | 2005-12-08 | 2007-06-21 | Pentax Corp | Tip end protection cap for endoscope |
| JP2007313039A (en) * | 2006-05-26 | 2007-12-06 | Pentax Corp | Distal end protection cap of endoscope |
| JP4634967B2 (en) * | 2006-05-26 | 2011-02-16 | Ｈｏｙａ株式会社 | Endoscope protective cap |
| JP2007313172A (en) * | 2006-05-29 | 2007-12-06 | Pentax Corp | Distal end protection cap for endoscope |
| JP4634968B2 (en) * | 2006-05-29 | 2011-02-16 | Ｈｏｙａ株式会社 | Endoscope protective cap |
| JP2007330421A (en) * | 2006-06-14 | 2007-12-27 | Pentax Corp | Head end protection cap of endoscope |
| US7931149B2 (en) | 2009-05-27 | 2011-04-26 | Given Imaging Ltd. | System for storing and activating an in vivo imaging capsule |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7883459B2 (en) | Endoscope and method for repairing the same | |
| EP1478264B1 (en) | Miniature endoscope with imaging fiber system | |
| US7981027B2 (en) | Endoscope and front cover | |
| US20070027360A1 (en) | Endoscope | |
| US20070038031A1 (en) | Endoscope distal end part | |
| JPS63123011A (en) | Endoscope | |
| JPH07184837A (en) | Cover type endoscope | |
| JPH07148105A (en) | Endoscope with covering | |
| JP3607843B2 (en) | Endoscope | |
| JP3791910B2 (en) | Endoscope hood | |
| JPH07308283A (en) | Cover type endoscope | |
| JPH0661205U (en) | Endoscope with endoscope cover method | |
| JP2600218Y2 (en) | Cover type endoscope device | |
| JP3485648B2 (en) | Endoscope cover | |
| JP5283463B2 (en) | Endoscope | |
| JPS63286132A (en) | Rigid endoscope | |
| JP3371385B2 (en) | Cover-type endoscope | |
| JP3276712B2 (en) | Cover-type endoscope | |
| JPH08545A (en) | Cover type endoscope | |
| JPH0731582A (en) | Endoscope cover type endoscope device | |
| JPH0666606U (en) | Endoscope with channel cover system | |
| JPH06261855A (en) | Endoscope device of endoscope cover system | |
| JP3468951B2 (en) | Medical endoscope | |
| JPH0666607U (en) | Endoscope with channel cover system | |
| JPH0668706U (en) | Endoscope with channel cover system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010306 |