JPH09108172A - Tip connection part for endoscope - Google Patents
Tip connection part for endoscopeInfo
- Publication number
- JPH09108172A JPH09108172A JP7272162A JP27216295A JPH09108172A JP H09108172 A JPH09108172 A JP H09108172A JP 7272162 A JP7272162 A JP 7272162A JP 27216295 A JP27216295 A JP 27216295A JP H09108172 A JPH09108172 A JP H09108172A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- holes
- lumen tube
- peripheral surface
- distal end
- 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】この発明は、挿入部可撓管の
少なくとも先端側の部分がマルチルーメンチューブによ
って形成された内視鏡の先端連結部に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distal end connecting portion of an endoscope in which at least a distal end side portion of a flexible tube of an insertion portion is formed by a multi-lumen tube.
【０００２】[0002]
【従来の技術】図３は、そのような従来の内視鏡の先端
連結部を示しており、挿入部可撓管の先端部分が、内蔵
物を通すための複数の貫通孔５２，５３が可撓性のある
棒状部材に軸線と平行方向に穿設されたマルチルーメン
チューブ５１によって形成されている。2. Description of the Related Art FIG. 3 shows a distal end connecting portion of such a conventional endoscope, in which a distal end portion of a flexible tube of an insertion portion has a plurality of through holes 52, 53 for passing a built-in object. It is formed by a multi-lumen tube 51 formed in a flexible rod member in a direction parallel to the axis.
【０００３】先端部本体５５には、マルチルーメンチュ
ーブ５１側の複数の貫通孔５２，５３と同軸に複数の孔
５６，５７が穿設されていて、一つの孔５６内には対物
光学系５９が内蔵され、もう一つの孔５７は処置具挿通
孔として用いられている。A plurality of through holes 52 and 53 on the side of the multi-lumen tube 51 are coaxially formed in the tip end main body 55, and a plurality of holes 56 and 57 are formed coaxially therewith. And the other hole 57 is used as a treatment tool insertion hole.
【０００４】その他にも、ライトガイドファイバを通す
孔等があるが、その図示は省略されている。６１ａは、
イメージガイドファイババンドル６１の先端口金、６２
は、処置具挿通孔の接続管である。There are other holes for passing the light guide fiber, but the illustration thereof is omitted. 61a is
Image guide fiber bundle 61 tip cap, 62
Is a connection pipe for the treatment instrument insertion hole.
【０００５】マルチルーメンチューブ５１の最先端部分
は、少し細く形成されて、筒状に形成された先端部本体
の後端部内周に嵌挿されていて、その嵌合部Ａにおいて
マルチルーメンチューブ５１と先端部本体５５とが接
合、連結されている。The most distal portion of the multi-lumen tube 51 is formed to be slightly thin and is fitted and inserted into the inner periphery of the rear end portion of the tip body formed in a tubular shape. And the tip portion main body 55 are joined and connected.
【０００６】[0006]
【発明が解決しようとする課題】しかし、そのようにマ
ルチルーメンチューブ５１と先端部本体５５とを連結部
で嵌合させるには、その部分でマルチルーメンチューブ
５１と先端部本体５５とを径方向に重ね合わせる必要が
あるので、その部分の外径が太くなって体腔内における
挿入性が低下してしまう。また、マルチルーメンチュー
ブ５１と先端部本体５５とを嵌合させるようにする機械
加工も面倒である。However, in order to fit the multi-lumen tube 51 and the tip portion main body 55 at the connecting portion in such a manner, the multi-lumen tube 51 and the tip portion main body 55 are radially joined at that portion. However, the outer diameter of the portion is increased, and the insertability in the body cavity is reduced. Further, the machining for fitting the multi-lumen tube 51 and the tip end main body 55 together is troublesome.
【０００７】そこで本発明は、挿入部可撓管を構成する
マルチルーメンチューブと先端部本体とを、連結部が太
くならないようにしかも簡単に連結することができる内
視鏡の先端連結部を提供することを目的とする。Therefore, the present invention provides a distal end connecting portion of an endoscope capable of easily connecting the multi-lumen tube forming the flexible tube of the insertion portion and the main body of the distal end portion so that the connecting portion does not become thick. The purpose is to do.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の内視鏡の先端連結部は、挿入部可撓管の少
なくとも先端側の部分が、可撓性のある棒状部材に複数
の貫通孔が軸線と平行方向に穿設されたマルチルーメン
チューブによって形成され、対物光学系が内蔵されて上
記マルチルーメンチューブの複数の貫通孔と同軸に連通
する複数の孔が穿設された先端部本体が、上記マルチル
ーメンチューブの先端に連結された内視鏡の先端連結部
において、上記マルチルーメンチューブの複数の貫通孔
内と上記先端部本体の複数の孔内とにまたがって挿通さ
れた部材の外周面を上記貫通孔の内周面と上記孔の内周
面とに接合することによって、上記マルチルーメンチュ
ーブと上記先端部本体とを連結したことを特徴とする。In order to achieve the above object, in the distal end coupling portion of the endoscope of the present invention, at least the distal end side portion of the flexible tube of the insertion portion is formed of a flexible rod member. A plurality of through-holes are formed by a multi-lumen tube that is bored in a direction parallel to the axis, and an objective optical system is built in, and a plurality of holes that are coaxial with the plurality of through-holes of the multi-lumen tube are bored. The tip portion main body is inserted into the plurality of through-holes of the multi-lumen tube and the plurality of holes of the tip portion main body at the tip connecting portion of the endoscope connected to the tip of the multi-lumen tube. The multi-lumen tube and the tip portion main body are connected to each other by joining the outer peripheral surface of the member to the inner peripheral surface of the through hole and the inner peripheral surface of the hole.
【０００９】なお、上記貫通孔内と孔内とにまたがって
挿通された部材の外周面が、上記貫通孔の内周面と上記
孔の内周面とに各々水密状態に接合されているとよい。If the outer peripheral surface of the member inserted through the through hole and the inside of the hole is water-tightly joined to the inner peripheral surface of the through hole and the inner peripheral surface of the hole, respectively. Good.
【００１０】[0010]
【発明の実施の形態】図面を参照して本発明の実施の形
態を説明する。図１は内視鏡の先端連結部付近の断面を
示しており、図２は、それと異なる切断面における断面
を示している。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a cross section in the vicinity of the distal end connecting portion of the endoscope, and FIG. 2 shows a cross section at a different cutting plane.
【００１１】挿入部可撓管は、少なくともその先端部分
が、例えばシリコンゴムや四フッ化エチレン等からなる
弾力性と可撓性のある棒状部材に複数の貫通孔２，３，
４が穿設されたマルチルーメンチューブ１によって形成
されている。At least the tip portion of the flexible tube of the insertion portion is made of, for example, a flexible and flexible rod-shaped member made of silicon rubber, tetrafluoroethylene or the like, and a plurality of through holes 2, 3, 3.
4 is formed by a multi-lumen tube 1 having a hole.
【００１２】各貫通孔２，３，４はマルチルーメンチュ
ーブ１の軸線と平行方向に穿設されていて、その第１の
貫通孔２内にはイメージガイドファイババンドル１１が
挿通され、第２の貫通孔３は処置具挿通孔として利用さ
れ、第３の貫通孔４内にはライトガイドファイバ１３が
挿通されている。Each of the through holes 2, 3 and 4 is bored in a direction parallel to the axis of the multi-lumen tube 1, and the image guide fiber bundle 11 is inserted into the first through hole 2 and the second through hole 2 is formed. The through hole 3 is used as a treatment tool insertion hole, and the light guide fiber 13 is inserted into the third through hole 4.
【００１３】金属製の先端部本体５には、マルチルーメ
ンチューブ１側の複数の貫通孔２，３，４と同軸に複数
の孔６，７，８が穿設されていて、第１の貫通孔２と連
通する孔６内には先端側に対物光学系９が内蔵されてい
る。９ａはレンズ枠、９ｂは絞りである。A plurality of holes 6, 7, and 8 are formed in the metal tip body 5 coaxially with the plurality of through holes 2, 3, and 4 on the multi-lumen tube 1 side, and the first through hole is formed. An objective optical system 9 is built into the hole 6 communicating with the hole 2 on the tip side. Reference numeral 9a is a lens frame, and 9b is a diaphragm.
【００１４】また、イメージガイドファイババンドル１
１の先端口金１１ａが、その孔６と第１の貫通孔２とに
またがって嵌め込まれていて、その外周面が孔６の内周
面と第１の貫通孔２の内周面とに接着されている。接着
部は太線で図示されており、水分が通過できないよう
に、水密状態に接合されている（以下同じ）。Further, the image guide fiber bundle 1
The tip cap 11a of No. 1 is fitted over the hole 6 and the first through hole 2, and its outer peripheral surface is bonded to the inner peripheral surface of the hole 6 and the inner peripheral surface of the first through hole 2. Has been done. The adhesive portion is shown by a thick line and is joined in a watertight state so that moisture cannot pass through (the same applies hereinafter).
【００１５】第２の貫通孔３と連通する孔７は、処置具
挿通孔として用いられている。そして、金属製の接続管
１２がその孔７と第２の貫通孔３とにまたがって嵌め込
まれていて、その外周面が孔７の内周面と第２の貫通孔
３の内周面とに接着されている。この部分は、特に水密
性に気を付けて接着されている。The hole 7 communicating with the second through hole 3 is used as a treatment tool insertion hole. A metallic connecting pipe 12 is fitted over the hole 7 and the second through hole 3, and the outer peripheral surface of the connecting pipe 12 is the inner peripheral surface of the hole 7 and the inner peripheral surface of the second through hole 3. Is glued to. This part is adhered with particular attention to watertightness.
【００１６】第３の貫通孔４と連通する孔８内には、ラ
イトガイドファイバ１３の先端部分が嵌め込まれてい
て、そこから射出される照明光の配光角を広げるための
凹レンズ１０が孔８の先端部分に取り付けられている。
そして、ライトガイドファイバ１３の外周面が、孔８の
内周面と第３の貫通孔４の内周面とに接着されている。A tip portion of a light guide fiber 13 is fitted in a hole 8 communicating with the third through hole 4, and a concave lens 10 for expanding a light distribution angle of illumination light emitted from the light guide fiber 13 is formed in the hole. It is attached to the tip portion of No. 8.
The outer peripheral surface of the light guide fiber 13 is bonded to the inner peripheral surface of the hole 8 and the inner peripheral surface of the third through hole 4.
【００１７】マルチルーメンチューブ１と先端部本体５
とは、両者の接続部Ｂに段差ができないようにほぼ同じ
外径寸法に形成されて、単純に突き当てて配置されてい
て、その突き当て面は水密に接着されている。Multi-lumen tube 1 and tip body 5
Means that the connecting portions B of both are formed to have substantially the same outer diameter dimension so that there is no step, and are simply abutted to each other, and the abutting surfaces are watertightly bonded.
【００１８】したがって、マルチルーメンチューブ１と
先端部本体５とは、イメージガイドファイバ先端口金１
１ａと処置具挿通孔接続管１２とライトガイドファイバ
バンドル１３とが、マルチルーメンチューブ１の複数の
貫通孔２，３，４の内周面と先端部本体５の複数の孔
６，７，８の内周面とにまたがって挿通接着されること
によって連結固定されている。Therefore, the multi-lumen tube 1 and the tip portion main body 5 are the same as those of the image guide fiber tip base 1.
1a, the treatment instrument insertion hole connecting tube 12, and the light guide fiber bundle 13 are provided on the inner peripheral surfaces of the plurality of through holes 2, 3, 4 of the multi-lumen tube 1 and the plurality of holes 6, 7, 8 of the distal end body 5. It is connected and fixed by being inserted and bonded across the inner peripheral surface of the.
【００１９】また、マルチルーメンチューブ１と先端部
本体５との接続部Ｂの突き当て面が水密状態に接着さ
れ、さらに上述の各部材１１ａ，１２，１３が各貫通孔
２，３，４から孔６，７，８にまたがって水密状態に接
着されているので、外部から接続部Ｂを通って内視鏡の
内部に水分が侵入することはない。Further, the abutting surface of the connecting portion B between the multi-lumen tube 1 and the tip portion main body 5 is adhered in a watertight state, and the above-mentioned members 11a, 12 and 13 are further inserted from the through holes 2, 3 and 4, respectively. Since the watertight adhesive is spread over the holes 6, 7, and 8, moisture does not enter from the outside to the inside of the endoscope through the connecting portion B.
【００２０】[0020]
【発明の効果】本発明によれば、挿入部可撓管を構成す
るマルチルーメンチューブの複数の貫通孔内と先端部本
体の複数の孔内とにまたがって挿通された部材の外周面
を、貫通孔の内周面と孔の内周面とに接合することによ
って、マルチルーメンチューブと先端部本体とを連結し
たことにより、マルチルーメンチューブと先端部本体と
は単に突き当てて配置すればよいので、連結部を太くす
ることなくマルチルーメンチューブと先端部本体とを簡
単に連結することができる。According to the present invention, the outer peripheral surface of a member inserted through a plurality of through-holes of a multi-lumen tube and a plurality of holes of a tip portion main body which constitute a flexible tube of an insertion portion, By joining the inner peripheral surface of the through hole and the inner peripheral surface of the hole to connect the multi-lumen tube and the distal end body, the multi-lumen tube and the distal end body may be simply butted against each other. Therefore, the multi-lumen tube and the tip portion main body can be easily connected without increasing the thickness of the connecting portion.
【図１】本発明の実施の形態のイメージガイドファイバ
と処置具挿通路を含む切断面における断面図である。FIG. 1 is a cross-sectional view of a section including an image guide fiber and a treatment instrument insertion passage according to an embodiment of the present invention.
【図２】本発明の実施の形態のライトガイドファイバを
含む切断面における断面図である。FIG. 2 is a cross-sectional view of a cut surface including the light guide fiber according to the embodiment of the present invention.
【図３】従来例のイメージガイドファイバと処置具挿通
路を含む切断面における断面図である。FIG. 3 is a cross-sectional view of a cut surface including an image guide fiber and a treatment instrument insertion passage of a conventional example.
１ マルチルーメンチューブ ２，３，４ 貫通孔 ５ 先端部本体 ６，７，８ 孔 ９ 対物光学系 １１ａ 先端口金 １２ 接続管 １３ ライトガイドファイバ 1 Multi-lumen tube 2, 3, 4 Through hole 5 Tip body 6, 7, 8 hole 9 Objective optical system 11a Tip base 12 Connection tube 13 Light guide fiber
Claims (2)
が、可撓性のある棒状部材に複数の貫通孔が軸線と平行
方向に穿設されたマルチルーメンチューブによって形成
され、対物光学系が内蔵されて上記マルチルーメンチュ
ーブの複数の貫通孔と同軸に連通する複数の孔が穿設さ
れた先端部本体が、上記マルチルーメンチューブの先端
に連結された内視鏡の先端連結部において、 上記マルチルーメンチューブの複数の貫通孔内と上記先
端部本体の複数の孔内とにまたがって挿通された部材の
外周面を上記貫通孔の内周面と上記孔の内周面とに接合
することによって、上記マルチルーメンチューブと上記
先端部本体とを連結したことを特徴とする内視鏡の先端
連結部。1. An objective optical system, wherein at least a portion of the insertion portion flexible tube on the distal end side is formed by a multi-lumen tube in which a plurality of through holes are formed in a flexible rod-shaped member in a direction parallel to an axis. In the distal end connecting portion of the endoscope, the distal end body having a plurality of holes bored therein and coaxially communicating with the plurality of through-holes of the multi-lumen tube, is connected to the distal end of the multi-lumen tube. The outer peripheral surface of the member inserted through the plurality of through holes of the multi-lumen tube and the plurality of holes of the tip portion main body is joined to the inner peripheral surface of the through hole and the inner peripheral surface of the hole. Thus, the multi-lumen tube and the distal end portion main body are connected to each other, the distal end coupling portion of the endoscope.
れた部材の外周面が、上記貫通孔の内周面と上記孔の内
周面とに各々水密状態に接合されている請求項１記載の
内視鏡の先端連結部。2. An outer peripheral surface of a member inserted through the inside of the through hole and the inside of the hole is water-tightly joined to an inner peripheral surface of the through hole and an inner peripheral surface of the hole. Item 1. The distal end connecting portion of the endoscope according to Item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27216295A JP3619302B2 (en) | 1995-10-20 | 1995-10-20 | End joint of endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27216295A JP3619302B2 (en) | 1995-10-20 | 1995-10-20 | End joint of endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09108172A true JPH09108172A (en) | 1997-04-28 |
| JP3619302B2 JP3619302B2 (en) | 2005-02-09 |
Family
ID=17509959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27216295A Expired - Fee Related JP3619302B2 (en) | 1995-10-20 | 1995-10-20 | End joint of endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3619302B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006326306A (en) * | 2005-05-20 | 2006-12-07 | Karl Storz Endovision | Liner for endoscope working channel |
| JP2006340878A (en) * | 2005-06-09 | 2006-12-21 | Pentax Corp | Insertion part of flexible endoscope |
| JP2011525395A (en) * | 2008-06-27 | 2011-09-22 | オリンパス・ウィンター・アンド・イベ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Endoscope having cannula and optical system |
| WO2020021718A1 (en) * | 2018-07-27 | 2020-01-30 | オリンパス株式会社 | Endoscope |
-
1995
- 1995-10-20 JP JP27216295A patent/JP3619302B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006326306A (en) * | 2005-05-20 | 2006-12-07 | Karl Storz Endovision | Liner for endoscope working channel |
| JP2006340878A (en) * | 2005-06-09 | 2006-12-21 | Pentax Corp | Insertion part of flexible endoscope |
| JP2011525395A (en) * | 2008-06-27 | 2011-09-22 | オリンパス・ウィンター・アンド・イベ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Endoscope having cannula and optical system |
| WO2020021718A1 (en) * | 2018-07-27 | 2020-01-30 | オリンパス株式会社 | Endoscope |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3619302B2 (en) | 2005-02-09 |
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