JP3992134B2

JP3992134B2 - 2-channel endoscope

Info

Publication number: JP3992134B2
Application number: JP2001333745A
Authority: JP
Inventors: 直久矢作; 真一松野
Original assignee: ペンタックス株式会社; 直久矢作
Priority date: 2001-10-31
Filing date: 2001-10-31
Publication date: 2007-10-17
Anticipated expiration: 2021-10-31
Also published as: JP2003135377A

Description

【０００１】
【発明の属する技術分野】
この発明は、二つの処置具挿通路が挿入部内に配置された二チャンネル内視鏡に関する。
【０００２】
【従来の技術】
内視鏡は一般に、遠隔操作によって屈曲する湾曲部が挿入部の先端付近に設けられて、湾曲部の先端に連結された先端部本体に観察窓が配置され、二チャンネル内視鏡の場合には、二つの処置具挿通路の出口が先端部本体に並んで配置されている。
【０００３】
【発明が解決しようとする課題】
図４は、上述のような従来の二チャンネル内視鏡によって、体内の切除すべき病変部１００の根部にマーキング処置を行っている様子を示しており、１は挿入部可撓管、２は湾曲部、３は先端部本体、４は観察窓、５は照明窓、１１ａと１２ａは各々処置具出口である。
【０００４】
マーキング処置は、一方の処置具出口１１ａから突出させた把持鉗子５１で病変部１００をできるだけ持ち上げた状態で、他方の処置具出口１２ａから突出させたヒートプローブ５２等で、病変部１００の根部にマーク１０１をつけるようにして行われる。
【０００５】
しかし、一方の処置具出口１１ａから突出させた把持鉗子５１で病変部１００をできるだけ持ち上げると、必然的に他方の処置具出口１２ａから突出されるヒートプローブ５２の突出長が長くなるので、観察窓４がマーク１０１を付すべき位置から遠く離れてしまい、正確な位置にマーキングをするのが困難になる場合がある。
【０００６】
そこで本発明は、二つの処置具を同時に用いてマーキング処置等を正確かつ容易に行うことができる二チャンネル内視鏡を提供することを目的とする。
【０００７】
【課題を解決するための手段】
上記の目的を達成するため、本発明の二チャンネル内視鏡は、遠隔操作によって屈曲する湾曲部が挿入部の先端付近に設けられて、湾曲部の先端に連結された先端部本体に観察窓が配置され、処置具を案内するための二つの処置具挿通路が挿入部内に配置された二チャンネル内視鏡において、二つの処置具挿通路の一方の出口を先端部本体に配置し、他方の出口を湾曲部の後端付近に配置したものである。
【０００８】
【発明の実施の形態】
図面を参照して本発明の実施例を説明する。
図１は二チャンネル内視鏡の全体構成を示し、図２はその挿入部の先端部分を示している。
【０００９】
挿入部可撓管１の先端には、操作部６からの遠隔操作によって屈曲する湾曲部２が設けられ、観察窓４等が配置された先端部本体３が湾曲部２の先端に連結されている。５は照明窓、７は湾曲操作ノブである。
【００１０】
挿入部可撓管１内には、処置具類を案内するための例えば四フッ化エチレン樹脂チューブ等からなる二本の処置具挿通路１１，１２が並んで挿通配置されている。
【００１１】
そして第１の処置具挿通路１１の出口である第１の処置具出口１１ａは挿入部可撓管１と湾曲部２との連結部付近に配置され、第２の処置具挿通路１２の出口である第２の処置具出口１２ａは観察窓４と並んで先端部本体３に配置されている。
【００１２】
第１と第２の処置具挿通路１１，１２の入口１１ｂ，１２ｂは、共に挿入部可撓管１と操作部６との連結部付近に斜め上方に向けて配置されており、第１の処置具挿通路１１の入口１１ｂから挿入された処置具（把持鉗子）５１が第１の処置具出口１１ａから突出され、第２の処置具挿通路１２の入口１２ｂから挿入された処置具（ヒートプローブ）５２が第２の処置具出口１２ａから突出される。
【００１３】
このような構成により、図３に示されるように、第１の処置具出口１１ａから突出させた把持鉗子５１により病変部１００を摘んでできるだけ大きく持ち上げた時、第２の処置具出口１２ａとそれに並んで配置されている観察窓４を、病変部１００の根部に対して適度の距離に位置させることができる。
【００１４】
その結果、第２の処置具出口１２ａから突出させたヒートプローブ５２によって、病変部１００の根部の正確な位置に容易にマーク１０１を付すことができる。
【００１５】
なお、本発明は上記実施例に限定されるものではなく、本発明をマーキング以外の各種の内視鏡的処置に適用して、二つの処置具を同時に使用する際の処置操作を容易に行うことができる。
【００１６】
【発明の効果】
本発明によれば、二つの処置具挿通路の一方の出口を先端部本体に配置し、他方の出口を湾曲部の後端付近に配置したことにより、二つの処置具を同時に用いてマーキング処置等を適切な距離から正確かつ容易に行うことができる。
【図面の簡単な説明】
【図１】本発明の実施例の二チャンネル内視鏡の全体構成を示す斜視図である。
【図２】本発明の実施例の二チャンネル内視鏡の挿入部の先端部分の斜視図である。
【図３】本発明の実施例の二チャンネル内視鏡によるマーキング処置の状態を示す略示図である。
【図４】従来の二チャンネル内視鏡によるマーキング処置の状態を示す略示図である。
【符号の説明】
１挿入部可撓管
２湾曲部
３先端部本体
４観察窓
１１，１２処置具挿通路
１１ａ，１２ａ処置具出口
１１ｂ，１２ｂ入口
５１処置具（把持鉗子）
５２処置具（ヒートプローブ）
１０１マーク[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a two-channel endoscope in which two treatment instrument insertion passages are arranged in an insertion portion.
[0002]
[Prior art]
In the case of a two-channel endoscope, an endoscope is generally provided with a bending portion that is bent by a remote operation in the vicinity of the distal end of the insertion portion, and an observation window is disposed on the distal end main body connected to the distal end of the bending portion. Are arranged such that the outlets of the two treatment instrument insertion passages are arranged side by side with the distal end body.
[0003]
[Problems to be solved by the invention]
FIG. 4 shows a state in which a marking treatment is performed on the root of a lesion 100 to be excised in the body using the conventional two-channel endoscope as described above. A curved portion, 3 is a tip body, 4 is an observation window, 5 is an illumination window, and 11a and 12a are treatment instrument outlets.
[0004]
The marking treatment is performed at the root of the lesioned part 100 with the heat probe 52 or the like projected from the other treatment tool outlet 12a in a state where the lesioned part 100 is lifted as much as possible with the grasping forceps 51 projected from one treatment tool outlet 11a. This is done so that the mark 101 is attached.
[0005]
However, if the lesioned part 100 is lifted as much as possible with the grasping forceps 51 protruding from one treatment instrument outlet 11a, the projection length of the heat probe 52 protruding from the other treatment instrument outlet 12a is inevitably increased. 4 is far away from the position where the mark 101 should be attached, and it may be difficult to mark the correct position.
[0006]
In view of the above, an object of the present invention is to provide a two-channel endoscope that can perform marking treatment and the like accurately and easily using two treatment tools simultaneously.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the two-channel endoscope of the present invention has an observation window on a distal end portion main body connected to the distal end of the bending portion, wherein the bending portion bent by remote operation is provided near the distal end of the insertion portion. In the two-channel endoscope in which two treatment instrument insertion passages for guiding the treatment instrument are arranged in the insertion portion, one outlet of the two treatment instrument insertion passages is arranged in the distal end body, and the other Is arranged near the rear end of the curved portion.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the overall configuration of a two-channel endoscope, and FIG. 2 shows the distal end portion of the insertion portion.
[0009]
A bending portion 2 that is bent by a remote operation from the operation portion 6 is provided at the distal end of the insertion portion flexible tube 1, and a distal end portion body 3 on which an observation window 4 and the like are arranged is connected to the distal end of the bending portion 2. Yes. Reference numeral 5 denotes an illumination window, and 7 denotes a bending operation knob.
[0010]
In the insertion portion flexible tube 1, two treatment instrument insertion paths 11 and 12 made of, for example, a tetrafluoroethylene resin tube for guiding treatment instruments are inserted and arranged side by side.
[0011]
The first treatment instrument outlet 11a, which is the outlet of the first treatment instrument insertion passage 11, is disposed near the connecting portion between the insertion portion flexible tube 1 and the bending portion 2, and the outlet of the second treatment instrument insertion passage 12 is provided. The second treatment instrument outlet 12 a is arranged in the distal end portion body 3 along with the observation window 4.
[0012]
The inlets 11b and 12b of the first and second treatment instrument insertion passages 11 and 12 are both disposed obliquely upward in the vicinity of the connecting portion between the insertion portion flexible tube 1 and the operation portion 6, A treatment instrument (gripping forceps) 51 inserted from the inlet 11b of the treatment instrument insertion path 11 protrudes from the first treatment instrument outlet 11a and is inserted from the inlet 12b of the second treatment instrument insertion path 12 (heat). Probe) 52 protrudes from the second treatment instrument outlet 12a.
[0013]
With this configuration, as shown in FIG. 3, when the lesioned part 100 is picked up by the grasping forceps 51 protruding from the first treatment instrument outlet 11a and lifted as much as possible, the second treatment instrument outlet 12a and the The observation windows 4 arranged side by side can be positioned at an appropriate distance from the root of the lesioned part 100.
[0014]
As a result, the mark 101 can be easily attached to the accurate position of the root of the lesioned part 100 by the heat probe 52 protruding from the second treatment instrument outlet 12a.
[0015]
In addition, this invention is not limited to the said Example, Applying this invention to various endoscopic treatments other than marking, and easily performs treatment operation at the time of using two treatment tools simultaneously. be able to.
[0016]
【The invention's effect】
According to the present invention, one of the two treatment instrument insertion passages is disposed at the distal end portion main body, and the other outlet is disposed near the rear end of the curved portion. Etc. can be accurately and easily performed from an appropriate distance.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an overall configuration of a two-channel endoscope according to an embodiment of the present invention.
FIG. 2 is a perspective view of a distal end portion of an insertion portion of a two-channel endoscope according to an embodiment of the present invention.
FIG. 3 is a schematic view showing a state of marking treatment by the two-channel endoscope according to the embodiment of the present invention.
FIG. 4 is a schematic view showing a state of marking treatment by a conventional two-channel endoscope.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insertion part flexible tube 2 Bending part 3 Tip part main body 4 Observation window 11,12 Treatment tool insertion path 11a, 12a Treatment tool outlet 11b, 12b Inlet 51 Treatment tool (gripping forceps)
52 Treatment tool (heat probe)
101 mark

Claims

Two treatment instrument insertion passages for guiding a treatment instrument, wherein a bending part that is bent by remote operation is provided in the vicinity of the distal end of the insertion part, an observation window is arranged in the distal end body connected to the distal end of the bending part In the two-channel endoscope disposed in the insertion portion,
The outlet of one treatment instrument insertion path of the two treatment instrument insertion paths is arranged in the distal end body, and the outlet of the other treatment instrument insertion path is arranged near the rear end of the curved portion,
The outlet of the other treatment instrument insertion passage is formed on the outer peripheral surface of the insertion section so that the treatment instrument protruding therefrom advances straight forward in the entire area on the side of the curved section diagonally forward. A two-channel endoscope characterized by