JPH0956666A - Endoscope - Google Patents
EndoscopeInfo
- Publication number
- JPH0956666A JPH0956666A JP7213435A JP21343595A JPH0956666A JP H0956666 A JPH0956666 A JP H0956666A JP 7213435 A JP7213435 A JP 7213435A JP 21343595 A JP21343595 A JP 21343595A JP H0956666 A JPH0956666 A JP H0956666A
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- channel
- endoscope
- distal end
- tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば、体腔内に
挿入部を挿入し、その挿入部に設けたチャンネルの先端
開口部より、パピロトミーナイフを突き出し、十二指腸
乳頭を切開するのに好適な内視鏡に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for, for example, inserting an insertion portion into a body cavity, and projecting a papillotomy knife through the tip opening of a channel provided in the insertion portion to incise the duodenal papilla. Regarding the endoscope.
【０００２】[0002]
【従来の技術】乳頭切開を行う場合、従来から例えば実
公平７−４００４号公報に示すような側視タイプの内視
鏡が用いられている。このための内視鏡は先端構成部の
側面にチャンネル開口部を設けており、このチャンネル
開口部よりパピロトミーナイフを突き出し、同じくその
チャンネル開口部に設けた処置具起上機構によってパピ
ロトミーナイフの誘導方向を操作するようになってい
る。2. Description of the Related Art In the case of performing a nipple incision, a side-viewing type endoscope as shown in Japanese Utility Model Publication No. 7-4004 has been used. An endoscope for this is provided with a channel opening on the side surface of the distal end forming portion, a papillotomy knife is projected from this channel opening, and the treatment instrument raising mechanism also provided in the channel opening of the papillotomy knife It is designed to operate the guidance direction.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
内視鏡を用いて十二指腸乳頭の切開を行うには、その内
視鏡の挿入部を十二指腸内に宙に浮かせた状態にして、
挿入部の先端に設けた観察光学系を十二指腸乳頭の方向
に向け、それから内視鏡のチャンネルにパピロトミーナ
イフを挿入し、さらに、鉗子起上機構を用いてパピロト
ミーナイフを乳頭に挿入する操作を行い、そのパピロト
ミーナイフに通電するといった非常に複雑な操作が必要
だった。十二指腸側から乳頭へパピロトミーナイフを挿
入する操作を行うため、内視鏡の湾曲操作を、鉗子起上
操作、パピロトミーナイフの挿脱と同時に行う必要性が
あり、かなりの熟練を要していた。そこで、本発明では
例えば、十二指腸乳頭へのパピロトミーナイフの挿通が
簡単に行え、乳頭切開が容易にできる内視鏡を提供する
ことを目的とする。However, in order to perform an incision of the duodenal papilla using the conventional endoscope, the insertion portion of the endoscope is suspended in the duodenum,
An operation in which the observation optical system provided at the tip of the insertion part is directed toward the duodenal papilla, and then a papillotomy knife is inserted into the channel of the endoscope, and further, the papillotomy knife is inserted into the papilla using the forceps raising mechanism. Then, a very complicated operation such as energizing the papillotomy knife was required. Since the operation of inserting the papillotomy knife from the duodenum side into the papilla is performed, it is necessary to perform the bending operation of the endoscope at the same time as the forceps raising operation and the insertion / extraction of the papillotomy knife, which requires considerable skill. It was Therefore, it is an object of the present invention to provide, for example, an endoscope in which a papillotomy knife can be easily inserted into a duodenal papilla and a papillotomy can be easily performed.
【０００４】[0004]
【課題を解決するための手段】本発明は、挿入部の先端
側に湾曲部を有し、その湾曲部の先端に、観察光学系お
よび照明光学系を有する先端構成部を設け、前記挿入部
には処置具を挿通するチャンネルを有した内視鏡におい
て、前記チャンネルの先端側チャンネル開口部を前記湾
曲部の後方部位に位置させて設け、前記湾曲部を湾曲さ
せたとき、前記先端構成部における観察光学系および照
明光学系が、前記チャンネル開口部に向け得る構成とし
た。本発明の内視鏡は、湾曲部を湾曲させたときに、先
端構成部の対物光学系と照明光学系が、チャンネル開口
部側に向く。According to the present invention, a bending portion is provided on the distal end side of an insertion portion, and a distal end forming portion having an observation optical system and an illumination optical system is provided at the distal end of the bending portion. In an endoscope having a channel through which a treatment tool is inserted, a distal end side channel opening of the channel is provided at a position rearward of the bending portion, and when the bending portion is bent, the distal end forming portion is formed. The observation optical system and the illumination optical system in 1) can be directed to the channel opening. In the endoscope of the present invention, when the bending portion is bent, the objective optical system and the illumination optical system of the tip forming portion face the channel opening side.
【０００５】そこで、例えば、あらかじめ外科的に切開
しておいた胆嚢管より内視鏡の挿入部を挿入し、胆嚢管
から総胆管を経て挿入部を入れていく。そして、挿入部
先端の湾曲部を肝臓側から十二指腸側に向けて、十二指
腸乳頭から突き出す。このとき、チャンネル開口部は胆
管内で十二指腸乳頭の手前に位置している。この状態
で、パピロトミーナイフを十二指腸側に乳頭より押し出
す。それから内視鏡の湾曲部を湾曲させ、十二指腸乳頭
側に対物光学系と照明光学系を向け、パピロトミーナイ
フの観察下で、そのパピロトミーナイフを操作し、乳頭
切開を行うことができる。Therefore, for example, the insertion portion of the endoscope is inserted from the gallbladder duct that has been surgically incised in advance, and the insertion portion is inserted from the gallbladder duct through the common bile duct. Then, the curved portion at the tip of the insertion portion is protruded from the duodenal papilla toward the duodenum side from the liver side. At this time, the channel opening is located in front of the duodenal papilla in the bile duct. In this state, a papillotomy knife is pushed out toward the duodenum from the papilla. Then, the bending portion of the endoscope is bent, the objective optical system and the illumination optical system are directed to the duodenal papilla side, and the papillotomy knife can be operated under observation of the papillotomy knife to perform a papillotomy.
【０００６】[0006]
＜第１の実施形態＞図１から図４を参照して、本発明の
第１の実施形態を説明する。 （構成）図１は、この実施形態に係る内視鏡の挿入部を
体腔内に挿入している使用状態を示している。内視鏡１
は操作部２と挿入部３を有する。挿入部３はその先端側
に湾曲部４を有した挿入チューブ５とチャンネルチュー
ブ６を並列に隣接して配置してなる。湾曲部４は挿入チ
ューブ５の先端から延出されている。湾曲部４の先端に
は直視型の観察手段を組み込んだ先端構成部７が設けら
れている。<First Embodiment> A first embodiment of the present invention will be described with reference to FIGS. (Structure) FIG. 1 shows a usage state in which the insertion portion of the endoscope according to this embodiment is inserted into a body cavity. Endoscope 1
Has an operation part 2 and an insertion part 3. The insertion portion 3 is formed by arranging an insertion tube 5 having a curved portion 4 on its distal end side and a channel tube 6 in parallel and adjacently. The curved portion 4 extends from the tip of the insertion tube 5. A tip forming section 7 incorporating a direct-viewing type observation means is provided at the tip of the bending section 4.
【０００７】図２で示すように、先端構成部７にはその
中心位置に観察光学系８が配設され、この観察光学系８
はその最先端位置に対物レンズ群９を配置し、この対物
レンズ群９にはイメージガイドバンドル１０が連結され
ている。観察光学系８の周囲には、照明光学系１１が配
置されており、その照明光学系１１は最先端部位に光透
過接着剤１２を有し、その光透過接着剤１２に対してラ
イトガイドバンドル１３の先端が接着されている。As shown in FIG. 2, an observation optical system 8 is arranged at the center of the tip forming section 7, and the observation optical system 8 is provided.
The objective lens group 9 is arranged at the most advanced position thereof, and the image guide bundle 10 is connected to the objective lens group 9. An illumination optical system 11 is arranged around the observation optical system 8, and the illumination optical system 11 has a light transmitting adhesive 12 at the most distal end portion, and the light transmitting bundle 12 has a light guide bundle. The tip of 13 is glued.
【０００８】イメージガイドバンドル１０とライトガイ
ドバンドル１３は、挿入部３の先端構成部７から湾曲部
４および挿入チューブ５の各内部を通じて内視鏡１の操
作部２に導かれる。そして、イメージガイドバンドル１
０は、操作部２の接眼部１４に接続されている。また、
ライトガイドバンドル１３は、ライトガイドケーブル１
５内を通じて導かれ、そのライトガイドケーブル１５の
延出先端に設けた図示しないコネクタを介して同じく図
示しない内視鏡用光源装置に接続されるようになってい
る。The image guide bundle 10 and the light guide bundle 13 are guided from the distal end forming portion 7 of the insertion portion 3 to the operation portion 2 of the endoscope 1 through the insides of the bending portion 4 and the insertion tube 5. And image guide bundle 1
0 is connected to the eyepiece unit 14 of the operation unit 2. Also,
The light guide bundle 13 is the light guide cable 1
The light guide cable 15 is guided through the inside of the light guide cable 5, and is connected to an endoscope light source device (not shown) through a connector (not shown) provided at the extending tip of the light guide cable 15.
【０００９】前記湾曲部４はその軸方向へ複数の節輪１
６を連結した湾曲用芯材が設けられている。また、操作
ワイヤ１７が湾曲部４および挿入チューブ５内に挿通さ
れ、その先端は先端構成部７に連結されている。そし
て、前記操作部２に設けたアングルノブ１８により操作
ワイヤ１７を牽引することによって湾曲部４をその牽引
方向へ湾曲するように構成されている。また、湾曲部４
は観察光学系８および照明光学系１１を設けた先端構成
部７を後述するチャンネル開口へ向け得る湾曲角度以上
に大きく湾曲できるように構成されている。The bending portion 4 has a plurality of node rings 1 in the axial direction thereof.
A bending core material in which 6 are connected is provided. Further, the operation wire 17 is inserted into the bending portion 4 and the insertion tube 5, and the tip thereof is connected to the tip forming portion 7. Then, the bending portion 4 is bent in the pulling direction by pulling the operation wire 17 by the angle knob 18 provided on the operation portion 2. Also, the bending portion 4
Is configured to be able to be bent to a larger angle than a bending angle at which the tip forming portion 7 provided with the observation optical system 8 and the illumination optical system 11 can be directed to a channel opening described later.
【００１０】一方、挿入チューブ５の先端とチャンネル
チューブ６の先端は保持部材２１に取着されることによ
り並列に隣接する配置状態で固定されている。挿入チュ
ーブ５とチャンネルチューブ６は実質的に内接する状態
に配置されているが、ここでは保持部材２１に一対の孔
２２，２３を設け、これらの孔２２，２３に対して対応
する挿入チューブ５の先端部分とチャンネルチューブ６
の先端部分をそれぞれ個別的に嵌入し、接着等により固
定している。On the other hand, the distal end of the insertion tube 5 and the distal end of the channel tube 6 are attached to the holding member 21 so that they are fixed in parallel and adjacently arranged. Although the insertion tube 5 and the channel tube 6 are arranged so as to be substantially inscribed, a pair of holes 22 and 23 are provided in the holding member 21 and the insertion tube 5 corresponding to these holes 22 and 23 is provided. Tip of the tube and channel tube 6
The respective tip portions of the are individually fitted and fixed by adhesion or the like.
【００１１】挿入チューブ５の先端部分を嵌入した孔２
２には、前記湾曲部４の基端部が嵌入され、その湾曲部
４の基端と挿入チューブ５の先端が突き合わされて同軸
的に連結されている。また、チャンネルチューブ６の先
端部分を嵌入した孔２３にはガイド部材２４の一部が嵌
入され、その嵌入部２５の先端とチャンネルチューブ６
の先端が突き合わされて連結されている。ガイド部材２
４はチャンネルチューブ６のチャンネル孔２６と同軸的
に連通して前方へ開口する円形の孔からなるチャンネル
開口部２７が形成されている。Hole 2 into which the tip portion of the insertion tube 5 is fitted
A base end portion of the bending portion 4 is fitted in 2, and a base end of the bending portion 4 and a distal end of the insertion tube 5 are butted and coaxially connected to each other. Further, a part of the guide member 24 is fitted into the hole 23 into which the distal end portion of the channel tube 6 is fitted, and the distal end of the fitting portion 25 and the channel tube 6 are fitted.
The tips of are joined together. Guide member 2
A channel opening portion 4 is formed by a circular hole 4 which communicates with the channel hole 26 of the channel tube 6 coaxially and opens forward.
【００１２】図１および図２で示すように、ガイド部材
２４の先端部外周は前記湾曲部４の基端部の外周に向か
って縮径するようにテーパ状に形成されることにより傾
斜端面２８が形成されている。チャンネル開口部２７は
その傾斜端面２８に前方へ向かって開口されるため、斜
めに切除された長孔状に開口している。また、チャンネ
ル開口部２７は湾曲部４の後方端部位に位置して配置さ
れる。As shown in FIGS. 1 and 2, the outer periphery of the distal end portion of the guide member 24 is formed in a tapered shape so as to decrease in diameter toward the outer periphery of the proximal end portion of the curved portion 4, thereby forming the inclined end surface 28. Are formed. Since the channel opening 27 is opened forward in the inclined end face 28, it is opened in the shape of a long hole obliquely cut. Further, the channel opening 27 is arranged at the rear end portion of the bending portion 4.
【００１３】チャンネルチューブ６の基端は操作部２に
設けられた処置具挿入口２９に接続されている。そし
て、この処置具挿通口２９からチャンネルチューブ６内
のチャンネルに各種処置具を挿通できるようになってい
る。図１においては処置具としてパピロトミーナイフ３
０を挿入した状態を示している。The base end of the channel tube 6 is connected to a treatment instrument insertion port 29 provided in the operation section 2. Then, various treatment tools can be inserted into the channel in the channel tube 6 from the treatment tool insertion port 29. In FIG. 1, a papillotomy knife 3 is used as a treatment tool.
This shows a state where 0 is inserted.
【００１４】図４は前記内視鏡１の湾曲部４とチャンネ
ル開口部２７から突き出す処置具が、いわゆる「α」の
位置関係の状態を示している。つまり、湾曲部４を湾曲
して先端構成部７をチャンネル開口部２７へ向けたとき
の先端構成部７とチャンネル開口部２７との間の距離を
Ｌ1 、チャンネル開口部２７から突き出した処置具の可
動部の長さ（前記パピロトミーナイフ３０の場合にはそ
のナイフ部３０ａの湾曲部の長さ）をＬ2 としたとき、
Ｌ1 ＞Ｌ2 の関係式が成り立つように設定される関係
を示す。 （作用）この内視鏡１の使用法としてはその挿入部３を
経皮的に胆嚢管３１に設けた孔３２に挿入し、さらに総
胆管３３まで挿入し、ファータ氏乳頭３４より十二指腸
３５側へ突き出した湾曲部４にファータ氏乳頭３４側へ
向ける湾曲をかける。また、チャンネル開口部２７はフ
ァータ氏乳頭３４の手前の位置に配置し、そこの位置か
らパピロトミーナイフ３０の先端部を、ファータ氏乳頭
３４から十二指腸３５側へ突き出す。内視鏡１でパピロ
トミーナイフ３０を観察しながら、そのパピロトミーナ
イフ３０を湾曲・通電させて、ファータ氏乳頭３４の切
開を行う。 （効果）この処置によれば、パピロトミーナイフ３０を
ファータ氏乳頭３４から突き出す操作が容易で確実とな
り、ファータ氏乳頭の切開が容易に行える。また、湾曲
部４を湾曲するにあたって、前述したＬ1 ＞Ｌ2 の寸法
関係により、いわゆる「α」の位置状態が容易に得ら
れ、常に処置具、つまり、パピロトミーナイフ３０の状
態を見ながら処置を行えるので安全性が高い。さらに、
総胆管３３から十二指腸３５側へ湾曲部４を突き出すの
で、内視鏡１の挿入部３や湾曲部４の姿勢が安定し、パ
ピロトミーナイフ３０の処置操作を確実かつ容易に行う
ことができる。 ＜第２の実施形態＞図５および図６を参照して、本発明
の第２の実施形態を説明する。 （構成）この実施形態では挿入チューブ５とチャンネル
チューブ６を別々に設けることなく、その挿入チューブ
５の中にチャンネルチューブ６を内蔵し、またはチャン
ネルを形成するようにしたものである。その他は前述し
た第１実施形態に同じである。この場合において、挿入
チューブ５の外形は、図６（ａ）や図６（ｂ）のような
形態を選択できる。図６（ａ）では挿入チューブ５の断
面形状が異形の楕円であり、その中に配設する部材のイ
メージガイドバンドル１０やライトガイドバンドル１３
やチャンネルチューブ６を密に配置するようにした。図
６（ｂ）では挿入チューブ５の断面形状が円形で、その
中に配設する部材を比較的ゆとりをもって配設するよう
にしたものである。 （効果）この実施形態によれば、チャンネルが挿入チュ
ーブ５に内蔵されているので、そのチャンネルの部分が
座屈等の起こる心配がなく、それのメンテナンスが省略
できる。図６（ａ）のものでは挿入チューブ５の断面積
がより小さいので、さらに挿入しやすい。 ＜第３の実施形態＞図７を参照して、本発明の第３の実
施形態を説明する。 （構成）この実施形態では、内視鏡１の先端構成部７に
組み込む観察光学系が側視型としたものであり、その先
端構成部７には側視用観察光学系３７と側視用照明光学
系３８を有している。この他は前述した第１実施形態と
同じである。 （効果）この実施形態の内視鏡１における観察光学系が
側視型なので、前述した第１実施形態の場合に比べて、
湾曲部４が、約９０％少ない湾曲角で、チャンネル開口
部２７を観察できる。第１実施形態より湾曲部４を短く
できる。従って、十二指腸等の管腔で湾曲操作がしやす
く、適用範囲も広くなる。 ＜第４の実施形態＞図８を参照して、本発明の第４の実
施形態を説明する。 （構成）この実施形態での内視鏡１はその先端構成部７
に組み込む観察光学系が斜視型としたものであり、その
先端構成部７には斜視用観察光学系４１と斜視用照明光
学系４２を有している。さらに前方斜視用観察光学系光
軸４３と挿入軸４４との成す角度をαとすると、αは
０＜α＜９０° の範囲内で設定される。この他は前述
した第１実施形態と同じである。 （効果）この実施形態によれば、前述した第１実施形態
よりは少ない湾曲部４の湾曲角で、先端構成部７をチャ
ンネル開口部２７に向けられる。従って、十二指腸等の
管腔での湾曲操作がしやすく、適用範囲も広くなる。 ＜第５の実施形態＞図９を参照して、本発明の第５の実
施形態を説明する。 （構成）この実施態様での内視鏡１はその先端構成部７
に後方斜視用観察光学系４５と後方斜視用照明光学系４
６を有している。そして、後方斜視用観察光学系光軸４
７と挿入軸４８とのなす角度をβとすると、βは、９０
°＜β＜１８０° の範囲内で設定される。この他は前
述した第１実施形態と同じである。 （効果）この実施態様によれば、湾曲部４を湾曲させな
くても、処置具を観察でき、また湾曲部４を短く構成で
きるので、操作性が向上する。 ［付記］前述した実施形態によれば、次のような事項が
少なくとも得られる。 １．挿入部の先端側に湾曲部を有し、その湾曲部の先端
に、観察光学系および照明光学系を有する先端構成部を
設け、前記挿入部には処置具を挿通するチャンネルを有
した内視鏡において、前記チャンネルの先端側チャンネ
ル開口部を前記湾曲部の後方部位に位置させて設け、前
記湾曲部を湾曲させたとき、前記先端構成部における観
察光学系および照明光学系が、前記チャンネル開口部に
向け得る構成としたことを特徴とする内視鏡。FIG. 4 shows a state in which the bending portion 4 of the endoscope 1 and the treatment tool projecting from the channel opening 27 have a so-called "α" positional relationship. That is, when the bending portion 4 is bent to direct the tip forming portion 7 toward the channel opening 27, the distance between the tip forming portion 7 and the channel opening 27 is L 1 , and the treatment tool protruding from the channel opening 27. When the length of the movable part (the length of the curved part of the knife part 30a in the case of the papillotomy knife 30) is L 2 ,
L 1> shows the relationship of the equation L 2 is set to true. (Operation) As a method of using the endoscope 1, the insertion portion 3 is percutaneously inserted into the hole 32 provided in the gallbladder duct 31, and further up to the common bile duct 33. The bending portion 4 protruding toward is bent toward the side of Mr. Ferta's nipple 34. Further, the channel opening 27 is arranged at a position in front of Mr. Ferta's teat 34, and from this position, the tip of the papillotomy knife 30 is projected from Mr. Ferta's papilla 34 toward the duodenum 35. While observing the papillotomy knife 30 with the endoscope 1, the papillotomy knife 30 is bent and energized to make an incision on Mr. Ferta's papilla 34. (Effect) According to this treatment, the operation of ejecting the papillotomy knife 30 from the Mr. Ferta's teat 34 is easy and reliable, and the incision of Mr. Ferta's teat can be easily performed. Further, when the bending portion 4 is bent, the so-called “α” position state can be easily obtained due to the dimensional relationship of L 1 > L 2 described above, and the treatment tool, that is, the state of the papillotomy knife 30 is constantly observed. Highly safe because it can be treated. further,
Since the bending portion 4 is projected from the common bile duct 33 toward the duodenum 35, the postures of the insertion portion 3 and the bending portion 4 of the endoscope 1 are stable, and the treatment operation of the papillotomy knife 30 can be performed reliably and easily. <Second Embodiment> A second embodiment of the present invention will be described with reference to FIGS. (Structure) In this embodiment, the insertion tube 5 and the channel tube 6 are not separately provided, but the channel tube 6 is built into the insertion tube 5 or a channel is formed. Others are the same as those in the first embodiment described above. In this case, the outer shape of the insertion tube 5 can be selected from the forms shown in FIGS. 6 (a) and 6 (b). In FIG. 6A, the cross-sectional shape of the insertion tube 5 is an elliptical shape with an irregular shape, and the image guide bundle 10 and the light guide bundle 13 of the members to be arranged therein.
The channel tubes 6 were arranged densely. In FIG. 6 (b), the insertion tube 5 has a circular cross-sectional shape, and members arranged therein are arranged with a relatively large space. (Effect) According to this embodiment, since the channel is built in the insertion tube 5, there is no concern that the channel portion will buckle and the maintenance thereof can be omitted. In the case of FIG. 6A, the insertion tube 5 has a smaller cross-sectional area, which makes insertion easier. <Third Embodiment> A third embodiment of the present invention will be described with reference to FIG. (Structure) In this embodiment, the observation optical system incorporated in the distal end configuration section 7 of the endoscope 1 is of a side-view type, and the distal end configuration section 7 has a side-view observation optical system 37 and a side-view observation system. It has an illumination optical system 38. The other points are the same as those in the first embodiment described above. (Effect) Since the observation optical system in the endoscope 1 of this embodiment is a side-view type, compared to the case of the above-described first embodiment,
The bending portion 4 can observe the channel opening 27 at a bending angle of about 90% less. The bending portion 4 can be made shorter than in the first embodiment. Therefore, it is easy to perform a bending operation in a lumen such as the duodenum, and the applicable range is widened. <Fourth Embodiment> A fourth embodiment of the present invention will be described with reference to FIG. (Structure) The endoscope 1 according to this embodiment has a distal end constituent portion 7 thereof.
The observing optical system incorporated in is a perspective type, and the distal end constituting section 7 has a observing observing optical system 41 and a illuminating illuminating optical system 42 for observing. Further, when the angle formed by the optical axis 43 of the observation optical system for front perspective and the insertion axis 44 is α, α is
It is set within the range of 0 <α <90 °. The other points are the same as those in the first embodiment described above. (Effect) According to this embodiment, the tip forming portion 7 can be directed to the channel opening 27 with a smaller bending angle of the bending portion 4 than in the above-described first embodiment. Therefore, the bending operation in the lumen of the duodenum or the like is easy, and the applicable range is wide. <Fifth Embodiment> A fifth embodiment of the present invention will be described with reference to FIG. (Structure) The endoscope 1 in this embodiment has a distal end constituent portion 7 thereof.
The rear squint observation optical system 45 and the rear squint illumination optical system 4
6. Then, the rear oblique viewing optical system optical axis 4
If the angle between 7 and the insertion shaft 48 is β, β is 90
It is set within the range of ° <β <180 °. The other points are the same as those in the first embodiment described above. (Effect) According to this embodiment, the treatment tool can be observed without bending the bending portion 4 and the bending portion 4 can be configured to be short, so that operability is improved. [Additional Remarks] According to the above-described embodiment, at least the following matters can be obtained. 1. An endoscope having a curved portion on the distal end side of the insertion portion, a distal end component having an observation optical system and an illumination optical system is provided at the distal end of the curved portion, and the insertion portion has a channel through which a treatment tool is inserted. In the mirror, a tip side channel opening portion of the channel is provided at a position rearward of the bending portion, and when the bending portion is bent, the observation optical system and the illumination optical system in the tip forming portion have the channel opening. An endoscope having a configuration capable of being directed to a portion.
【００１５】２．前記湾曲部を湾曲させたとき、チャン
ネル開口部に向けられた先端部とチャンネル開口部との
間は処置具先端の可動部分をチャンネル開口部から出し
ても接触しない距離を有することを特徴とする付記第１
項に記載の内視鏡。 ３．前記先端部の観察光学系と照明光学系は直視型であ
ることを特徴とする付記第１項に記載の内視鏡。 ４．前記先端部の観察光学系および照明光学系が側視型
であることを特徴とする付記第１項に記載の内視鏡。 ５．前記先端部の観察光学系および照明光学系が前方斜
視型であることを特徴とする付記第１項に記載の内視
鏡。2. When the bending portion is bent, there is a distance between the distal end portion facing the channel opening portion and the channel opening portion such that the movable portion of the treatment instrument distal end does not come in contact with the channel opening portion. Appendix 1
The endoscope according to the item. 3. The endoscope according to appendix 1, wherein the observation optical system and the illumination optical system of the distal end portion are direct-viewing type. 4. The endoscope according to appendix 1, wherein the observation optical system and the illumination optical system of the distal end portion are of a side-view type. 5. The endoscope according to Supplementary Note 1, wherein the observation optical system and the illumination optical system of the distal end portion are of a front perspective type.
【００１６】６．前記先端部の観察光学系および照明光
学系が後方斜視型であることを特徴とする付記第１項に
記載の内視鏡。 ７．前記チャンネルは挿入部の挿入チューブの外周に平
行に並べて設けられたチューブによって形成されている
ことを特徴とする付記第１項に記載の内視鏡。 ８．前記チャンネルは挿入部の挿入チューブの内部に形
成されていることを特徴とする付記第１項に記載の内視
鏡。6. The endoscope according to Supplementary Note 1, wherein the observation optical system and the illumination optical system of the distal end portion are rear perspective type. 7. The endoscope according to supplementary note 1, wherein the channel is formed by tubes arranged in parallel to the outer circumference of the insertion tube of the insertion section. 8. The endoscope according to claim 1, wherein the channel is formed inside the insertion tube of the insertion portion.
【００１７】[0017]
【発明の効果】以上説明したように本発明の内視鏡によ
れば、例えばパピロトミーナイフを十二指腸乳頭に挿通
する操作が安定し、かつ確実かつ容易に行うことがで
き、乳頭切開等の処置を容易に行うことができる。As described above, according to the endoscope of the present invention, the operation of inserting, for example, a papillotomy knife into the duodenal papilla can be performed stably and reliably and easily, and a procedure such as nipple incision can be performed. Can be done easily.
【図１】第１の実施形態に係る内視鏡の使用状態を示す
斜視図。FIG. 1 is a perspective view showing a usage state of an endoscope according to a first embodiment.
【図２】同じく第１の実施形態に係る内視鏡の挿入部に
おける先端付近の断面図。FIG. 2 is a sectional view of the insertion portion of the endoscope according to the first embodiment near the distal end thereof.
【図３】（ａ）は図２中Ａ−Ａ線に沿う部分の断面図、
（ｂ）は図２中Ｂ−Ｂ線に沿う部分の断面図、（ｃ）は
図２中Ｃ−Ｃ線に沿う部分の断面図。3 (a) is a sectional view of a portion taken along the line AA in FIG.
2B is a sectional view of a portion taken along the line BB in FIG. 2, and FIG. 6C is a sectional view of a portion taken along the line C-C in FIG. 2.
【図４】同じく第１の実施形態に係る内視鏡の湾曲部の
作用を示す説明図。FIG. 4 is an explanatory view showing the operation of the bending portion of the endoscope according to the first embodiment.
【図５】第２の実施形態に係る内視鏡の湾曲部の作用を
示す説明図。FIG. 5 is an explanatory diagram showing an operation of a bending portion of the endoscope according to the second embodiment.
【図６】（ａ）（ｂ）は図５中Ｘ−Ｘ線に沿う部分の異
なる形態の断面図。6 (a) and 6 (b) are cross-sectional views of different forms of a portion taken along line XX in FIG.
【図７】第３の実施形態に係る内視鏡の湾曲部の作用を
示す説明図。FIG. 7 is an explanatory view showing the action of the bending portion of the endoscope according to the third embodiment.
【図８】第４の実施形態に係る内視鏡の湾曲部の作用を
示す説明図。FIG. 8 is an explanatory view showing the action of the bending portion of the endoscope according to the fourth embodiment.
【図９】第５の実施形態に係る内視鏡の湾曲部の作用を
示す説明図。FIG. 9 is an explanatory view showing the action of the bending portion of the endoscope according to the fifth embodiment.
１…内視鏡、２…操作部、３…挿入部、４…湾曲部、５
…挿入チューブ、６…チャンネルチューブ、７…先端構
成部、８…観察光学系、９…対物レンズ群、１０…イメ
ージガイドバンドル、１１…照明光学系、１２…光透過
接着剤、１３…ライトガイドバンドル、１４…接眼部、
１５…ライトガイドケーブル、１６…節輪、１７…操作
ワイヤ、２１…保持部材、２４…ガイド部材、２６…チ
ャンネル孔、２７…チャンネル開口部、２９…処置具挿
入口、３１…胆嚢管、３２…孔、３３…総胆管、３４…
ファータ氏乳頭、３５…十二指腸、３０…パピロトミー
ナイフ。DESCRIPTION OF SYMBOLS 1 ... Endoscope, 2 ... Operation part, 3 ... Insertion part, 4 ... Bending part, 5
... Insertion tube, 6 ... Channel tube, 7 ... Tip configuration part, 8 ... Observation optical system, 9 ... Objective lens group, 10 ... Image guide bundle, 11 ... Illumination optical system, 12 ... Light transmissive adhesive, 13 ... Light guide Bundle, 14 ... Eyepiece,
15 ... Light guide cable, 16 ... Node ring, 17 ... Operation wire, 21 ... Holding member, 24 ... Guide member, 26 ... Channel hole, 27 ... Channel opening, 29 ... Treatment tool insertion port, 31 ... Gallbladder tube, 32 ... hole, 33 ... common bile duct, 34 ...
Ferta's teat, 35 ... duodenum, 30 ... papillotomy knife.
Claims (1)
部の先端に、観察光学系および照明光学系を有する先端
構成部を設け、前記挿入部には処置具を挿通するチャン
ネルを有した内視鏡において、 前記チャンネルの先端側チャンネル開口部を前記湾曲部
の後方部位に位置させて設け、前記湾曲部を湾曲させた
とき、前記先端構成部における観察光学系および照明光
学系が、前記チャンネル開口部に向け得る構成としたこ
とを特徴とする内視鏡。1. A channel having a curved portion on the distal end side of the insertion portion, a distal end forming portion having an observation optical system and an illumination optical system provided at the distal end of the curved portion, and a channel through which a treatment tool is inserted in the insertion portion. In the endoscope having the above, the distal end side channel opening of the channel is provided at a position rearward of the bending portion, and when the bending portion is bent, the observation optical system and the illumination optical system in the tip forming portion are provided. However, the endoscope having a structure capable of being directed to the channel opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21343595A JP3504391B2 (en) | 1995-08-22 | 1995-08-22 | Endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21343595A JP3504391B2 (en) | 1995-08-22 | 1995-08-22 | Endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0956666A true JPH0956666A (en) | 1997-03-04 |
| JP3504391B2 JP3504391B2 (en) | 2004-03-08 |
Family
ID=16639189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21343595A Expired - Fee Related JP3504391B2 (en) | 1995-08-22 | 1995-08-22 | Endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3504391B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002085329A (en) * | 2000-09-13 | 2002-03-26 | Asahi Optical Co Ltd | Endoscope |
| JP2010178766A (en) * | 2009-02-03 | 2010-08-19 | Hoya Corp | Endoscope for treatment |
| JP2010178934A (en) * | 2009-02-06 | 2010-08-19 | Hoya Corp | Endoscope for treatment |
| WO2015133434A1 (en) * | 2014-03-04 | 2015-09-11 | オリンパス株式会社 | Treatment tool for endoscope and incision system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5167275B2 (en) | 2007-01-04 | 2013-03-21 | エスケー ケミカルズ カンパニー リミテッド | Method for producing polyarylene sulfide resin excellent in brightness |
-
1995
- 1995-08-22 JP JP21343595A patent/JP3504391B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002085329A (en) * | 2000-09-13 | 2002-03-26 | Asahi Optical Co Ltd | Endoscope |
| JP2010178766A (en) * | 2009-02-03 | 2010-08-19 | Hoya Corp | Endoscope for treatment |
| JP2010178934A (en) * | 2009-02-06 | 2010-08-19 | Hoya Corp | Endoscope for treatment |
| WO2015133434A1 (en) * | 2014-03-04 | 2015-09-11 | オリンパス株式会社 | Treatment tool for endoscope and incision system |
| JP5928862B2 (en) * | 2014-03-04 | 2016-06-01 | オリンパス株式会社 | Endoscopic treatment tool and incision system |
| JPWO2015133434A1 (en) * | 2014-03-04 | 2017-04-06 | オリンパス株式会社 | Endoscopic treatment tool and incision system |
| US10045818B2 (en) | 2014-03-04 | 2018-08-14 | Olympus Corporation | Treatment tool for endoscope and incision system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3504391B2 (en) | 2004-03-08 |
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