JP2003153851A - Endoscope - Google Patents

Endoscope

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JP2003153851A
JP2003153851A JP2001356055A JP2001356055A JP2003153851A JP 2003153851 A JP2003153851 A JP 2003153851A JP 2001356055 A JP2001356055 A JP 2001356055A JP 2001356055 A JP2001356055 A JP 2001356055A JP 2003153851 A JP2003153851 A JP 2003153851A
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forceps
auxiliary water
channel
endoscope
direction
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JP2001356055A
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JP4010797B2 (en )
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Masaru Takeshige
勝 竹重
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Pentax Corp
ペンタックス株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide an endoscope with which a procedure and sub-water supply work can be easily carried out parallel and the sub-water supply work can be stably carried out.
SOLUTION: This endoscope is formed by opening a forceps protruding opening 21 of a forceps channel 2 and a sub-water supply hole 31 of a sub-water supply channel 30 at the distal end of an internal insertion portion 11 and is set with the direction of the sub-water supply hole 31 in a direction intersecting with the extension direction of the forceps protruding opening 21.
COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】 【0001】 【技術分野】本発明は、鉗子チャンネルと副送水チャンネルを有する内視鏡に関する。 BACKGROUND OF THE INVENTION [0001] TECHNICAL FIELD The present invention relates to an endoscope having a forceps channel and auxiliary water channel. 【0002】 【従来技術及びその問題点】内視鏡では、各種鉗子を挿入部先端から突出させるための鉗子チャンネルと、洗浄液や染色液を供給するための副送水チャンネルとを両方備えたタイプがある。 2. Description of the Related Art In endoscope, a forceps channel for protruding various forceps from the insertion tip, the type comprising both a auxiliary water channel for supplying a cleaning liquid and staining solution is there. このような内視鏡では、挿入部先端面に、鉗子チャンネルの鉗子突出開口と副送水チャンネルの副送水穴(出口部)とが独立に設けられ、洗浄液や染色液は、副送水穴から鉗子チャンネルの軸線と略平行な方向に向かって噴出されるのが一般的である。 In such an endoscope, the insertion portion distal end surface, auxiliary water hole of the forceps projecting opening and auxiliary water channel of the forceps channel and (outlet) is provided independently, the cleaning solution and stain, forceps from auxiliary water hole it is generally jetted toward a direction substantially parallel to the axis of the channel. 【0003】ところで、内視鏡手術や臨床検査では、図8のように鉗子突出開口21'から突出させた高周波スネア23'を用いて体内組織を切除するとき、処置部位の出血を伴う場合がある。 [0003] In endoscopic surgery and clinical examination, when ablating body tissue using 'high-frequency snare 23 which projects from the' forceps protruding opening 21 as shown in FIG. 8, may involve bleeding treatment site is there. この場合には、副送水穴3 In this case, auxiliary water holes 3
1'から洗浄液を噴出して出血部を洗浄し、処置部位を観察しやすい状態にして処置を進めることが好ましい。 And ejecting the washing liquid from 1 'to wash the bleeding portion, it is preferable to proceed with the action in the state of easily observing the treatment site.
しかしながら、副送水穴31'の噴出方向が鉗子チャンネル20'の軸線と平行な方向であると、処置を行なっている状態で洗浄液を噴出しても洗浄液が出血部に当たらず、処置しながら出血部を洗浄することができなかった。 However, when the auxiliary water hole 31 'ejection direction of the forceps channel 20' is a direction parallel to the axis of the cleaning liquid even when ejecting the cleaning liquid while doing the treatment without hitting the bleeding part, while treating bleeding Department was not able to clean the. このため、出血部を洗浄する場合には、その都度、 Therefore, when cleaning the bleeding portion, each time,
処置を一時中断して洗浄液が出血部に当たるように挿入部11'の先端位置を調整する必要があり、迅速な対応がとれなかった。 Washings were suspended the treatment may need to adjust the end position of the insertion portion 11 'strike the bleeding part, rapid response is not taken. 【0004】また従来では、副送水穴の配置に関して特別な問題は指摘されていなかったが、副送水穴が挿入部先端面の外周近傍に配置されていると、以下の問題があることが判明した。 [0004] In the past, the special problems have not been pointed out with regard to the arrangement of the auxiliary water hole, the auxiliary water holes are disposed near the outer periphery of the insertion portion distal end face, turned out that the following problems did. すなわち、図9のように挿入部1 That is, the insertion section 1 as shown in FIG. 9
1'を体腔内壁に接近させた状態で副送水作業したとき、副送水穴31'から噴出された液体が体腔内壁の隆起部分によって遮られてしまうおそれがある。 'When were auxiliary water working in a state of being close to the inner wall of the body cavity, auxiliary water hole 31' first liquid ejected from to lead to blocked by the raised portion of the inner wall of the body cavity. 【0005】 【発明の目的】本発明は、以上の問題意識に鑑み、処置と副送水作業とを容易に併行することができ、且つ、安定して副送水作業のできる内視鏡を得ることを目的とする。 [0005] SUMMARY OF THE INVENTION The present invention has been made in view of the consciousness above problems, the treatment and auxiliary water work can be easily parallel, and, to obtain an endoscope can be stably the auxiliary water work With the goal. 【0006】 【発明の概要】本発明は、体内挿入部の先端に、鉗子チャンネルの鉗子突出開口と副送水チャンネルの副送水穴とを開口させた内視鏡において、上記副送水チャンネルの副送水穴の方向を、鉗子チャンネルの鉗子突出開口の延長方向と交叉する方向に設定したことを特徴としている。 SUMMARY OF THE INVENTION The present invention, the tip of the body insertion portion, the endoscope is opened and the auxiliary water hole of the forceps projecting opening and auxiliary water channel of the forceps channel, auxiliary water of the auxiliary water channel the direction of the bore, and wherein the set in a direction intersecting the extending direction of the forceps projecting opening of the forceps channel. 【0007】この構成によれば、副送水穴から鉗子突出開口の前方に向かって洗浄液が噴出されるので、処置を行ないながら出血部を容易に洗浄することができる。 [0007] According to this arrangement, since the cleaning liquid toward the auxiliary water hole in front of the forceps projecting apertures is ejected, it is possible to easily wash the bleeding portion while performing treatment. これにより、作業効率が向上する結果、迅速な処置を行なえる。 Thus, the result of improving the working efficiency, allows a rapid treatment. 【0008】鉗子チャンネルとして大径鉗子チャンネルと小径鉗子チャンネルを備えた場合には、副送水穴の方向を、小径鉗子チャンネルの鉗子突出開口の延長方向と交叉する方向に設定することが好ましい。 [0008] When equipped with a large 径鉗Ko channels and a small-diameter forceps channel as forceps channel, the direction of the auxiliary water-supply holes, be set in a direction intersecting the extending direction of the forceps projecting opening of the small-diameter forceps channel preferred. 別言すれば、 In other words,
体内組織を切断する処理具を挿通する鉗子チャンネルのほうが小径であるので、副送水穴の方向を、該小径鉗子チャンネルの鉗子口の延長方向に設定することが好ましい。 Since more of the forceps channel for inserting a treatment tool for cutting the body tissues is a small diameter, the direction of the auxiliary water-supply holes, it is preferable to set the extending direction of the forceps port of the small 径鉗Ko channel. 【0009】副送水チャンネルの副送水穴の延長方向と、鉗子チャンネルの鉗子突出開口の延長方向とは、対物光学系の最良ピント位置近傍で交叉することが好ましい。 [0009] and the extending direction of the auxiliary water holes of auxiliary water channel, and the extending direction of the forceps projecting opening of the forceps channel, it is preferred to intersect at best focus position near the objective optical system. この構成によれば、対物光学系の最良ピント位置近傍に洗浄液が供給されるので、良好な状態で観察しながら出血部を洗浄することができる。 According to this arrangement, since the cleaning liquid is supplied to the best focus position near the objective optical system, it is possible to clean the bleeding part while observing in good condition. 【0010】副送水チャンネルの副送水穴は、該副送水穴から噴出した液体が体腔内の隆起部分によって遮られることがないように、体内挿入部の先端端面において、 [0010] auxiliary water holes of auxiliary water channel, so as not to liquid ejected from the sub water feed hole is blocked by the raised portion of the body cavity, at the tip end face of the body insertion portion,
鉗子チャンネルの鉗子突出開口よりも中心側に配置されていることが好ましい。 It is preferably arranged in the center side of the forceps projecting opening of the forceps channel. より具体的には、副送水穴から対物光学系の観察窓までの距離が、鉗子チャンネルの鉗子突出開口から観察窓までの距離よりも短くなるように設定されるとよい。 More specifically, may the distance from auxiliary water hole to the observation window of the objective optical system is set to be shorter than the distance to the observation window from the forceps projecting opening of the forceps channel. 【0011】 【発明の実施の形態】図1は、本発明の一実施形態である医療用の内視鏡10を示している。 DETAILED DESCRIPTION OF THE INVENTION Figure 1 shows an endoscope 10 for medical which is an embodiment of the present invention. 内視鏡10は、可撓性を有する体内挿入部11と、操作者が把持する把持操作部12と、把持操作部12から延設されたユニバーサルチューブ13と、ユニバーサルチューブ13の先端に設けたコネクタ部14とを有し、コネクタ部14を介してビデオプロセッサ2に着脱可能である。 The endoscope 10, a flexible-vivo insertion portion 11 having a gripping operation unit 12 by the operator gripping a universal tube 13 which extends from the gripping operation unit 12, provided at the tip of the universal tube 13 and a connector portion 14 is detachably attached to the video processor 2 via the connector portion 14. 体内挿入部11の先端面11aには、図2に示すように、観察窓1 The distal end surface 11a of the body insertion portion 11, as shown in FIG. 2, observation window 1
5、照明窓16、送気・送水ノズル17、鉗子突出開口(鉗子チャンネル出口部)21及び副送水穴(副送水チャンネル出口部)31等が配置されている。 5, an illumination window 16, gas supply and water supply nozzle 17, a forceps projecting opening (forceps channel outlet) 21 and the auxiliary water-supply hole (auxiliary water channel outlet portion) 31 and the like are arranged. 観察窓15 The observation window 15
の後方には不図示の対物レンズが配置されていて、対物レンズによる像は不図示の撮像手段によって電子画像化され、ビデオプロセッサ2を介してモニタ3上で観察することができる。 In the rear have been arranged objective lens (not shown), an image by the objective lens is electronically imaged by the imaging means, not shown, can be observed on the monitor 3 via the video processor 2. 照明窓16の後方には不図示の配光レンズが配置されていて、この配光レンズに、コネクタ部14からユニバーサルチューブ13、把持操作部12及び体内挿入部11内を通るライトガイドを介して、ビデオプロセッサ2が備えた不図示の光源からの照明光が与えられる。 Behind the illumination window 16 are arranged a light distribution lens (not shown), the light distribution lens, Universal tube 13 from the connector unit 14, via the light guide through the gripping operation unit 12 and the body insertion portion 11 , illumination light from a light source (not shown) that the video processor 2 with given. 送気・送水ノズル17は、観察窓15の洗浄用ノズルである。 Gas supply and water supply nozzle 17 is a cleaning nozzle of the observation window 15. 【0012】把持操作部12には、体内挿入部11の先端部近傍を上下方向または左右方向に湾曲操作するための湾曲操作ノブ18が設けられ、この把持操作部12と体内挿入部11との間の連結部分には、鉗子突出開口2 [0012] grip operation portion 12, the bending operation knob 18 for bending operation of the vicinity of the front end portion of the body insertion portion 11 in the vertical or horizontal direction is provided, between the gripping operation portion 12 and the insertion into the body portion 11 the connecting portion between forceps projecting opening 2
1に通じる鉗子挿入突起(鉗子チャンネル入口部)22 Forceps insertion protrusion leading to 1 (forceps channel inlet portion) 22
が設けられている。 It is provided. また、コネクタ部14には、副送水穴31に通じる副送水注入口(副送水チャンネル入口部)32が設けられている。 Further, the connector portion 14, the sub water supply inlet (auxiliary water channel inlet portion) 32 is provided in communication with the auxiliary water hole 31. 副送水注入口32には、副送水チューブ4を介して、洗浄液や染色液等を内視鏡1 The auxiliary water inlet 32, via the auxiliary water-supply tube 4, the endoscope 1 of the washing solution and dyeing solution, etc.
0に送出する副送水装置5が接続可能である。 Auxiliary water system 5 to be transmitted to 0 can be connected. このように副送水注入口32がコネクタ部14に設けられていると、把持操作部12に副送水注入口を設けた場合に比して副送水チューブ4が短くて済み、内視鏡操作時に副送水チューブ4が操作の邪魔にならない。 With such auxiliary water-supply inlet 32 ​​is provided in the connector portion 14, as compared with the case where the grip operation portion 12 provided with the auxiliary water-supply inlet be short by-water supply tube 4, at the time of endoscope operation secondary water supply tube 4 does not interfere with the operation. 【0013】以上の内視鏡10には、鉗子挿入突起22 [0013] The endoscope 10 or more, forceps insertion projection 22
に挿入された処置具を鉗子突出開口21まで導く鉗子チャンネル20と、副送水注入口32に供給された液体を副送水穴31まで流通させる副送水チャンネル30とが備えられている。 In the forceps channel 20 for guiding the inserted treatment instrument to the forceps projecting opening 21, and the auxiliary water channel 30 for circulating the auxiliary water-supply inlet 32 ​​is supplied to the liquid to the sub water supply hole 31 is provided. 図3に示すように副送水チャンネル3 Auxiliary water channel 3, as shown in FIG. 3
0は、鉗子チャンネル20の軸線の延長方向に徐々に接近する方向に傾斜していて、副送水穴31が鉗子突出開口21の延長方向と交叉する方向(図3の矢印方向)に開口している。 0 is inclined in a direction to gradually approach the extending direction of the axis of the forceps channel 20, auxiliary water hole 31 is opened in the direction crossing the extending direction of the forceps projecting openings 21 (arrow direction in FIG. 3) there. 副送水装置5から副送水チャンネル30 Auxiliary water channel from the secondary water-supply unit 5 30
に送出された液体は、副送水穴31から鉗子突出開口2 Dispatched liquid is forceps projecting opening 2 from auxiliary water hole 31
1の延長方向と交叉する方向へ噴出され、鉗子突出開口21の前方へ供給される。 Ejected in a direction intersecting the first direction of extension, it is supplied to the front of the forceps projecting openings 21. 処置具を用いて処置を行なうとき、鉗子突出開口21から突出した処置具が位置する鉗子突出開口21の前方(鉗子突出開口21の延長方向)が通常、処置部位となっている。 When performing treatment using a treatment instrument, which is in front of the forceps projecting openings 21 the treatment instrument projecting from the forceps projecting opening 21 is located (the extending direction of the forceps projecting opening 21) is normal, the treatment site. よって、処置部位から出血があった場合には、副送水穴31から洗浄液を噴出することで出血部を容易に洗浄でき、洗浄作業のために処置を中断する必要がない。 Therefore, when there is bleeding from the treatment site, can be easily cleaned bleeding portion by the auxiliary water-supply holes 31 for ejecting a cleaning liquid, there is no need to interrupt the treatment because of the cleaning operation. このように処置と副送水作業とを併行して行えると、作業能率が向上し、迅速な処置が可能となる。 When performed by concurrently and thus treat the auxiliary water work, improve work efficiency, it is possible to quickly treat. なお、図3は、高周波スネア23 Incidentally, FIG. 3, the high-frequency snare 23
を処置具として用いた場合を示している。 It shows the case of using as a treatment tool a. 【0014】上記副送水穴31は、図4に示すように、 [0014] The auxiliary water holes 31, as shown in FIG. 4,
鉗子突出開口21よりも観察窓15の近傍に配置されている。 It is disposed in the vicinity of the observation window 15 than the forceps projecting opening 21. すなわち、観察窓15から副送水穴31までの距離R1(中心間距離)が、観察窓15から鉗子突出開口21までの距離R2(中心間距離)よりも短くなるように設定されている。 That is, the distance from the observation window 15 to the auxiliary water-supply holes 31 R1 (center distance) is set to be shorter than the distance R2 from the observation window 15 to the forceps projecting opening 21 (center distance). このように副送水穴31が鉗子突出開口21よりも先端面11aの中心側に配置されていると、体内挿入部11を体腔内壁に接近させて副送水作業を行なう場合に、副送水穴31から噴出された液体が体腔内壁の隆起部分によって遮られることがなく、安定した副送水作業を行なえる。 With such auxiliary water hole 31 is disposed at the center side of the front end surface 11a than the forceps projecting opening 21, the insertion into the body portion 11 in the case where the auxiliary water-supply work is brought closer to the inner wall of the body cavity, auxiliary water hole 31 without liquid ejected is blocked by the raised portion of the inner wall of the body cavity from, allows stable auxiliary water work. 【0015】図5及び図6は、本発明による内視鏡の第2の実施形態を示している。 [0015] Figures 5 and 6 show a second embodiment of the endoscope according to the present invention. この実施形態の内視鏡は、 The endoscope of this embodiment,
体内組織を把持する処置具を挿通するための大径鉗子チャンネル24と、体内組織を切断する処置具を挿通するための小径鉗子チャンネル25を備えている。 Large 径鉗Ko channel 24 for inserting the treatment tool for gripping the body tissue, and a small-diameter forceps channel 25 for inserting the treatment tool to cut the body tissue. 体内挿入部11の先端面11aには、図5に示すように、観察窓15、照明窓16及び送気・送水ノズル17に加えて、 The distal end surface 11a of the body insertion portion 11, as shown in FIG. 5, the observation window 15, in addition to the illumination window 16 and the gas supply and water supply nozzle 17,
大径鉗子チャンネル24の出口部である大径鉗子突出開口24aと、小径鉗子チャンネル25の出口部である小径鉗子突出開口25aと、副送水チャンネル30の副送水穴31とが設けられている。 A large 径鉗Ko projecting opening 24a is an outlet portion of the large 径鉗Ko channel 24, and the small-diameter forceps projecting opening 25a is an outlet portion of the small-diameter forceps channel 25, and the auxiliary water hole 31 of the auxiliary water channel 30 is provided. 副送水穴31は、体腔内壁に隆起部分があっても安定して送液できるように、大径鉗子突出開口24a及び小径鉗子突出開口25aよりも、先端面11aの中心側に配置されている。 Auxiliary water hole 31, there is a raised portion on the inner wall of the body cavity so as to be stable liquid feed is also lower than the atmospheric 径鉗Ko projecting openings 24a and the small-diameter forceps projecting openings 25a, it is arranged on the center side of the distal end face 11a . 【0016】本実施形態の副送水チャンネル30は、小径鉗子チャンネル25の軸線の延長方向に徐々に接近する方向に傾斜していて、副送水穴31が小径鉗子突出開口25aの延長方向と交叉する方向(図6の矢印方向) The auxiliary water channel 30 of the present embodiment is inclined in a direction to gradually approach the extending direction of the axis of the small-diameter forceps channel 25, auxiliary water hole 31 intersects the extension direction of the small-diameter forceps projected opening 25a direction (arrow direction in FIG. 6)
に開口している。 It is open to. すなわち、副送水装置5から副送水チャンネル30に供給された液体は、副送水穴31から小径鉗子突出開口25aの延長方向と交叉する方向へ噴出され、小径鉗子突出開口25aの前方へ供給される。 That is, auxiliary water device 5 is supplied to the auxiliary water channel 30 the liquid is ejected from the auxiliary water holes 31 in a direction intersecting the extending direction of the small-diameter forceps projecting opening 25a, is supplied to the front of the small-diameter forceps projected opening 25a . よって、処置部位から出血があった場合には、副送水穴3 Therefore, when there is bleeding from the treatment site, auxiliary water holes 3
1から洗浄液を噴出することで出血部を容易に洗浄でき、洗浄作業のために処置を中断する必要がない。 1 can be easily cleaned bleeding part by ejecting a cleaning liquid from, it is not necessary to interrupt the treatment because of the cleaning operation. 以上のように複数の鉗子チャンネルを備えた内視鏡においては、体内組織を切断する処置具を挿通する鉗子チャンネルの鉗子突出開口の前方に送液できるよう副送水穴の方向を設定することで、処置と副送水作業とを併行して行なうことができる。 Or in the endoscope having a plurality of forceps channels as, by setting the direction of the auxiliary water-supply holes can be fed to the front of the forceps projecting opening of the forceps channel for inserting a treatment instrument to cut the body tissue it can be carried out concurrently with the treatment and auxiliary water work. 【0017】図7は、本発明による内視鏡の第3の実施形態を示している。 [0017] Figure 7 shows a third embodiment of the endoscope according to the present invention. この実施形態は、副送水チャンネル30の副送水穴31の延長方向と、鉗子チャンネル20 This embodiment is an extension direction of the auxiliary water hole 31 of the auxiliary water channel 30, the forceps channel 20
の鉗子突出開口21の延長方向とが、観察窓15後方に位置する対物レンズ19の最良ピント位置近傍で交叉するように設定した実施形態である。 And the extending direction of the forceps projecting opening 21 of an embodiment in which set to intersect at the best focus position near the objective lens 19 is located in the observation window 15 behind. すなわち、副送水装置5から副送水チャンネル30に供給された液体は、副送水穴31から鉗子突出開口21の延長方向と交叉する方向へ噴出され、鉗子突出開口21の前方であって、且つ、対物レンズ19の最良ピント位置近傍に供給される。 That is, auxiliary water supplied device from 5 to auxiliary water channel 30 the liquid is ejected from the auxiliary water holes 31 in a direction intersecting the extending direction of the forceps projecting opening 21, a front of the forceps projecting opening 21, and, It is supplied to the best focus position near the objective lens 19. このように副送水が対物レンズ19の最良ピント位置近傍に供給されると、モニタ3を良好な状態で観察しながら処置部位を洗浄することができ、操作性が向上する。 With such auxiliary water is supplied to the best focus position near the objective lens 19, it can be washed treatment site while observing the monitor 3 in good condition, thereby improving the operability. この場合にも、処置と副送水作業とは併行して行うことができる。 In this case, it can be carried out concurrently in the treatment and auxiliary water work. なお、対物レンズ19の後方には撮像手段(CCD)が配設されるが、図7では簡略化のため省略してある。 Incidentally, in the rear of the objective lens 19 is image pickup means (CCD) is disposed, it is omitted for simplicity in FIG. 【0018】以上、図示実施形態を参照して本発明を説明したが、本発明の内視鏡は図示実施形態に限定されるものではない。 [0018] Although the invention has been described with reference to the illustrated embodiment, the endoscope of the present invention is not limited to the illustrated embodiment. 例えば、本発明は、撮像手段(CCD) For example, the present invention relates to an imaging device (CCD)
の代わりに光学ファイバや接眼レンズを用いた光学内視鏡にも適用可能である。 It can also be applied to an optical endoscope using an optical fiber or eyepiece in place of. 【0019】 【発明の効果】本発明によれば、処置と副送水作業とを容易に併行することができ、安定して副送水作業できる内視鏡を得ることができる。 According to the present invention, it is possible to easily parallel the treatment and auxiliary water work, it is possible to obtain an endoscope can be stably auxiliary water work.

【図面の簡単な説明】 【図1】本発明による内視鏡の第1の実施形態を示す概略構成図である。 It is a schematic diagram showing a first embodiment of the endoscope according to the drawings: Figure 1 of the present invention. 【図2】同内視鏡の体内挿入部の先端面を示す斜視図である。 2 is a perspective view showing a distal end surface of the body insertion portion of the endoscope. 【図3】図2に示す副送水穴の方向を説明する模式図である。 3 is a schematic view illustrating the direction of the auxiliary water-supply holes shown in FIG. 【図4】同副送水穴の配置を説明する模式図である。 4 is a schematic view for explaining the arrangement of the auxiliary water hole. 【図5】第2の実施形態における内視鏡の体内挿入部の先端面を示す斜視図である。 5 is a perspective view showing a distal end surface of the body insertion portion of the endoscope in the second embodiment. 【図6】図5に示す副送水穴の方向を説明する模式図である。 6 is a schematic view illustrating the direction of the auxiliary water-supply holes shown in FIG. 【図7】第3の実施形態における内視鏡が備えた副送水穴の方向を説明する模式図である。 7 is a schematic view illustrating the direction of the auxiliary water-supply holes endoscope equipped in the third embodiment. 【図8】従来の内視鏡に備えられた副送水穴の問題点を説明する模式図である。 8 is a schematic view of the problems explained in the auxiliary water-supply holes provided in the conventional endoscope. 【図9】従来の内視鏡に備えられた副送水穴の別の問題点を説明する模式図である。 9 is a schematic view illustrating another problem of the auxiliary water holes provided in the conventional endoscope. 【符号の説明】 2 ビデオプロセッサ3 モニタ4 副送水チューブ5 副送水装置10 内視鏡11 体内挿入部12 把持操作部13 ユニバーサルチューブ14 コネクタ部15 観察窓16 照明窓17 送気・送水ノズル18 湾曲操作ノブ19 対物レンズ20 鉗子チャンネル21 鉗子突出開口22 鉗子挿入突起23 高周波スネア24 大径鉗子チャンネル24a 大径鉗子突出開口25 小径鉗子チャンネル25a 小径鉗子突出開口30 副送水チャンネル31 副送水穴32 副送水注入口 [EXPLANATION OF SYMBOLS] 2 video processor 3 monitor 4 sub water supply tube 5 auxiliary water-supply device 10 endoscope 11 inside the insertion portion 12 gripping the operation portion 13 Universal tube 14 connector section 15 observation window 16 the illumination window 17 gas supply and water supply nozzle 18 curved the operation knob 19 objective lens 20 forceps channel 21 forceps protruding opening 22 forceps insertion projection 23 a high-frequency snare 24 large 径鉗Ko channel 24a large 径鉗Ko protruding opening 25 diameter forceps channel 25a small forceps protruding opening 30 auxiliary water channel 31 auxiliary water holes 32 auxiliary water inlet

Claims (1)

  1. 【特許請求の範囲】 【請求項1】 体内挿入部の先端に、鉗子チャンネルの鉗子突出開口と副送水チャンネルの副送水穴とを開口させた内視鏡において、 上記副送水チャンネルの副送水穴の方向を、鉗子チャンネルの鉗子突出開口の延長方向と交叉する方向に設定したことを特徴とする内視鏡。 The tip of the Claims 1] inside the insertion portion, the endoscope is opened and the auxiliary water hole of the forceps projecting opening and auxiliary water channel of the forceps channel, auxiliary water hole of the auxiliary water channel the direction, the endoscope being characterized in that set in the direction crossing the extending direction of the forceps projecting opening of the forceps channel. 【請求項2】 請求項1記載の内視鏡において、上記鉗子チャンネルは大径鉗子チャンネルと小径鉗子チャンネルが備えられ、副送水穴の方向は、小径鉗子チャンネルの鉗子突出開口の延長方向と交叉する方向に設定されている内視鏡。 2. A endoscope according to claim 1, wherein said forceps channel provided with a large 径鉗Ko channels and small diameter forceps channel, the direction of the auxiliary water hole, the extending direction of the forceps projecting opening of the small-diameter forceps channel cross an endoscope which is set in the direction of. 【請求項3】 請求項1または2記載の内視鏡において、副送水チャンネルの副送水穴の延長方向と、鉗子チャンネルの鉗子突出開口の延長方向とは、対物光学系の最良ピント位置近傍で交叉する内視鏡。 3. An apparatus according to claim 1 or 2 endoscope according, the extending direction of the auxiliary water holes of auxiliary water channel, and the extending direction of the forceps projecting opening of the forceps channel, the best focus position near the objective optical system endoscope crossing. 【請求項4】 請求項1ないし3のいずれか1項記載の内視鏡において、副送水チャンネルの副送水穴は、体内挿入部の先端端面において、鉗子チャンネルの鉗子突出開口よりも中心側に配置されている内視鏡。 4. The method of claim 1 to an endoscope according to any one of 3, auxiliary water holes of auxiliary water channel, at the tip end face of the body insertion portion, the center side of the forceps projecting opening of the forceps channel an endoscope disposed. 【請求項5】 請求項4項記載の内視鏡において、体内挿入部の先端にはさらに対物光学系の観察窓が設けられていて、副送水チャンネルの副送水穴は、該副送水穴から観察窓までの距離が鉗子チャンネルの鉗子突出開口から観察窓までの距離よりも短くなるように配置されている内視鏡。 5. The endoscope according to claim 4, wherein, at the distal end of the body insertion portion provided further observation window for the objective optical system, auxiliary water holes of auxiliary water channel, from the sub water feed hole endoscope distance to the observation window is arranged to be shorter than the distance to the observation window from the forceps projecting opening of the forceps channel.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006130076A (en) * 2004-11-05 2006-05-25 Olympus Corp Endoscope
JP2006340879A (en) * 2005-06-09 2006-12-21 Pentax Corp High frequency treatment instrument for endoscope
US8016753B2 (en) 2005-06-09 2011-09-13 Hoya Corporation Endoscope

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006130076A (en) * 2004-11-05 2006-05-25 Olympus Corp Endoscope
JP2006340879A (en) * 2005-06-09 2006-12-21 Pentax Corp High frequency treatment instrument for endoscope
JP4629507B2 (en) * 2005-06-09 2011-02-09 Hoya株式会社 Endoscopic high-frequency treatment instrument
US8016753B2 (en) 2005-06-09 2011-09-13 Hoya Corporation Endoscope

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