JP3927204B2 - Endoscope - Google Patents

Endoscope Download PDF

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JP3927204B2
JP3927204B2 JP2004216356A JP2004216356A JP3927204B2 JP 3927204 B2 JP3927204 B2 JP 3927204B2 JP 2004216356 A JP2004216356 A JP 2004216356A JP 2004216356 A JP2004216356 A JP 2004216356A JP 3927204 B2 JP3927204 B2 JP 3927204B2
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treatment instrument
endoscope
treatment
swinging
distal end
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JP2006034457A (en
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高嗣 山谷
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Olympus Corp
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Olympus Corp
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Priority to JP2004216356A priority Critical patent/JP3927204B2/en
Priority to DE602005026124T priority patent/DE602005026124D1/en
Priority to PCT/JP2005/013571 priority patent/WO2006009280A1/en
Priority to EP05761727A priority patent/EP1772095B1/en
Publication of JP2006034457A publication Critical patent/JP2006034457A/en
Priority to US11/652,276 priority patent/US20070112249A1/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064Constructional details of the endoscope body
    • A61B1/00071Insertion part of the endoscope body
    • A61B1/0008Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00098Deflecting means for inserted tools

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  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)

Description

この発明は、内視鏡挿入部の処置具挿通チャンネルに処置具を挿入し、その処置具挿通チャンネルのチャンネル開口から導出された処置具を揺動させる処置具揺動台を備えた内視鏡に関する。   The present invention provides an endoscope provided with a treatment instrument swinging base for inserting a treatment instrument into a treatment instrument insertion channel of an endoscope insertion portion and swinging the treatment instrument derived from the channel opening of the treatment instrument insertion channel. About.

近年、内視鏡の細長の挿入部を体腔内に挿入して体腔内を観察すると共に、必要に応じて内視鏡に設けられている処置具挿通チャンネルに処置具を挿通させ、病変部を広範囲に一括切除する治療手技が用いられている。   In recent years, an elongated insertion part of an endoscope is inserted into a body cavity to observe the inside of the body cavity, and if necessary, a treatment tool is inserted into a treatment tool insertion channel provided in the endoscope to Therapeutic techniques to remove a large area at once are used.

この内視鏡の処置具挿通チャンネルに挿通される処置具として、高周波ナイフが用いられる。この高周波ナイフは、内視鏡の湾曲操作や捻り操作によって左右に振り、病変粘膜の下層を切開する手技が広く行なわれている。この手技をより確実に実行するために、内視鏡挿入部の先端部に挿通された処置具を左右及び上下に振ることができる処置具揺動台が設けられている。また、患部の洗滌などのために前方送水口が設けられている。   A high-frequency knife is used as a treatment tool inserted into the treatment tool insertion channel of the endoscope. This high-frequency knife is widely used in a technique of swinging left and right by bending or twisting an endoscope and incising the lower layer of a lesioned mucosa. In order to perform this procedure more reliably, a treatment instrument swinging table is provided that can swing the treatment instrument inserted through the distal end portion of the endoscope insertion portion left and right and up and down. In addition, a front water supply port is provided for cleaning the affected area.

この内視鏡挿入部の先端に処置具揺動台、及び前方送水口を有する内視鏡は、例えば、特許文献1に提案されている。この特許文献1に提案されている内視鏡は、挿入部の先端部の先端面に、観察窓、照明窓、送水送気ノズル、第1の処置具挿通チャンネルに連通したチャンネル開口に設けられた第1の処置具揺動台、第2の処置具挿通チャンネルに連通したチャンネル開口に設けられた第2の処置具揺動台、及び前方送水口が設けられている。   An endoscope having a treatment instrument swing base and a front water supply port at the tip of the endoscope insertion portion is proposed in, for example, Patent Document 1. The endoscope proposed in Patent Document 1 is provided on the distal end surface of the distal end portion of the insertion portion at a channel opening communicating with an observation window, an illumination window, a water / air supply nozzle, and a first treatment instrument insertion channel. In addition, a first treatment instrument swinging base, a second treatment instrument swinging base provided in a channel opening communicating with the second treatment instrument insertion channel, and a front water supply port are provided.

この内視鏡の第1の処置具揺動台は、第1の処置具挿通チャンネルから挿通された処置具を上下方向に揺動し、第2の処置具揺動台は、第2処置具挿通チャンネルから挿通された処置具を左右方向に揺動させる。   The first treatment instrument swinging table of the endoscope swings the treatment tool inserted from the first treatment tool insertion channel in the vertical direction, and the second treatment tool swinging table is the second treatment tool swinging base. The treatment instrument inserted from the insertion channel is swung in the left-right direction.

この粘膜切開において、粘膜に付着している粘液や切開時の出血等を前方送水口からの送水により洗い流して観察窓からの切開対象の粘膜の観察をしやすくしている。
特開2003−305001号公報
In this mucosal incision, mucus adhering to the mucous membrane and bleeding at the time of incision are washed away by water supply from the front water supply port to facilitate observation of the mucosa to be incised from the observation window.
JP 2003-305001 A

従来の処置具揺動台を有する内視鏡の処置具挿通チャンネルに挿通させた高周波ナイフを用いて粘膜下層を切開する手技において、高周波ナイフを繰り返し揺動させて粘膜下層を切開する際に、切開した粘膜の組織が高周波ナイフの刃先に付着する。この高周波ナイフの刃先に付着した粘膜の組織は、すぐに炭化して高周波ナイフの切れ味が悪くなるという不具合があった。   In the procedure of incising the submucosa using a high-frequency knife inserted through a treatment instrument insertion channel of an endoscope having a conventional treatment instrument swinging base, when the high-frequency knife is repeatedly swung to incise the submucosa, The incised mucosal tissue adheres to the cutting edge of the high-frequency knife. The tissue of the mucous membrane adhering to the cutting edge of the high-frequency knife was immediately carbonized, resulting in a problem that the sharpness of the high-frequency knife deteriorated.

このため、高周波ナイフの刃先に粘膜の組織が付着すると、切開手技中の高周波ナイフを内視鏡から一度抜き取り、高周波ナイフに付着した粘膜の組織をきれいに取り除いた後、再度内視鏡に挿入仕直して粘膜の切開を継続させることが1つの症例において何度も繰り返さなければならず、非常に切開処置の効率が悪かった。   For this reason, if mucosal tissue adheres to the cutting edge of the high-frequency knife, the high-frequency knife in the incision procedure is once removed from the endoscope, the mucosal tissue adhering to the high-frequency knife is removed cleanly, and then inserted into the endoscope again. Repairing and continuing the mucosal incision had to be repeated many times in one case, and the incision procedure was very inefficient.

本発明は、上記事情に鑑みてなされたものであり、内視鏡挿入部の先端部の処置具揺動台から突出させた高周波ナイフによる粘膜切除において、高周波ナイフを処置具挿通チャンネルから引き抜くことなく、高周波ナイフに付着した粘膜の組織を効果的に除去し、粘膜の切除行為を継続して実行できる切開処置の効率の優れた内視鏡を提供することを目的とする。   The present invention has been made in view of the above circumstances, and in high-frequency knife mucosal resection with a high-frequency knife protruded from a treatment instrument swinging table at the distal end of an endoscope insertion portion, the high-frequency knife is extracted from the treatment instrument insertion channel. It is another object of the present invention to provide an endoscope with an excellent efficiency of incision treatment that can effectively remove mucosal tissue adhering to a high-frequency knife and can continuously perform excision of the mucosa.

本発明の第1の内視鏡は、内視鏡挿入部の先端に設けられた観察手段と、前記内視鏡挿入部に設けられた処置具挿通チャンネルと、この処置具挿通チャンネルに挿入されて前記内視鏡挿入部の先端部から導出された処置具を前記観察手段によって得られた内視鏡画像の画面の略左右方向、または略上下方向に揺動させる処置具揺動台と、前記内視鏡挿入部の先端部にて開口し、前記処置具揺動台により揺動される前記処置具の手元側から先端側により形成される揺動領域内を貫通する方向に向かって、前記処置具揺動台により揺動された該処置具を洗浄可能に揺動領域内に流体を送出する流体送出通路と、を備えたことを特徴とする。 The first endoscope of the present invention is inserted into the observation means provided at the distal end of the endoscope insertion section, the treatment instrument insertion channel provided in the endoscope insertion section, and the treatment instrument insertion channel. A treatment instrument swinging table for swinging the treatment tool derived from the distal end portion of the endoscope insertion portion in a substantially horizontal direction or a substantially vertical direction of a screen of an endoscopic image obtained by the observation means; opens in the endoscope insertion portion of the tip, in the direction passing through the swing area formed by the distal end side from the proximal side of the treatment instrument to be swung by the treatment instrument swing table, And a fluid delivery passage for delivering fluid into the swinging region so that the treatment tool swung by the treatment tool swinging table can be cleaned .

また、本発明の第2の内視鏡は、内視鏡挿入部の先端に設けられた観察手段と、前記内視鏡挿入部に設けられた第1の処置具挿通用チャンネルを介して導出される第1の処置具を第1の方向に揺動する第1の処置具揺動台と、前記内視鏡挿入部に設けられた第2の処置具挿通用チャンネルを介して導出される第2の処置具を第2の方向に揺動する第2の処置具揺動台と、前記内視鏡挿入部の先端部にて開口し、前記第1の処置具揺動台による前記第1の処置具の揺動方向の延長線と、前記第2の処置具揺動台による前記第2の処置具の揺動方向の延長線とが交叉する領域に向けて、前記第1、及び第2の処置具揺動台により揺動される、それぞれの前記第1、及び第2の処置具を洗浄可能に流体を送出するように配置された流体送出通路と、を備えたことを特徴とする。 Further, the second endoscope of the present invention is led out through the observation means provided at the distal end of the endoscope insertion portion and the first treatment instrument insertion channel provided in the endoscope insertion portion. is derived through the first and the first treatment instrument controlling base which swings the treatment tool in a first direction, the second treatment tool insertion channel provided in the endoscope insertion portion to be A second treatment instrument oscillating base that oscillates the second treatment instrument in the second direction and an opening at a distal end portion of the endoscope insertion portion, and the first treatment instrument oscillating base configured to perform the first operation . and an extension line of the swinging direction of the first treatment instrument, and an extension line of the swinging direction of the second treatment tool according to the second treatment instrument controlling base is towards the region intersecting the first and, is swung by the second treatment instrument swing table, and a fluid delivery passageway arranged to deliver fluid cleanable each of the first and the second treatment tool, Characterized by comprising.

本発明の内視鏡は、高周波ナイフ等の処置具を用いた粘膜切除の行為中において、流体送出通路からの流体により高周波ナイフ等の処置具の刃先に付着した粘膜の組織を除去することができるために、高周波ナイフ等の処置具の切れ味の悪化や、治療を一時中断して内視鏡から高周波ナイフ等の処置具を引き抜き、付着物の掃除後の再挿入などの手間も省け、切開処置の効率が向上する効果を有している。   The endoscope of the present invention can remove mucosal tissue adhering to the cutting edge of a treatment tool such as a high-frequency knife by the fluid from the fluid delivery passage during the action of mucosal resection using a treatment tool such as a high-frequency knife. In order to do so, the sharpness of treatment tools such as high-frequency knives is deteriorated, treatment is temporarily suspended, the treatment tools such as high-frequency knives are withdrawn from the endoscope, and there is no need for re-insertion after cleaning the deposits. It has the effect of improving the efficiency of treatment.

また、前方送水を行いながら高周波ナイフ等の処置具を揺動させると、その流体の前方送出が処置具の表面を伝わって広範囲に送出が行なえるために、広範囲な患部の洗滌を内視鏡挿入部の湾曲部の湾曲操作を行うことなく実行できるために、患部の洗滌操作も簡単で、効率が向上する効果を有している。   In addition, when a treatment instrument such as a high-frequency knife is swung while performing forward water supply, the fluid can be forwardly transmitted through the surface of the treatment instrument, so that a wide range of delivery can be performed. Since it can perform without performing the bending operation of the bending part of an insertion part, the washing operation of an affected part is also easy and has the effect of improving efficiency.

以下、図面を参照して本発明の実施の形態について詳細に説明する。本発明の内視鏡の第1の実施形態について、図1乃至図11を用いて説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A first embodiment of the endoscope of the present invention will be described with reference to FIGS. 1 to 11.

図1は本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部を示す平面図、図2は本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部を示す斜視図、図3は本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部の電気絶縁性カバーの正面を除いた先端構成部を示す平面図、図4は本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部に設ける第1の処置具揺動台を示す斜視図、図5は本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部を示し、図1のB−B’切断線から切断した断面図、図6は本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部を示し、図1のA−A’切断線から切断した断面図、図7は本発明の内視鏡の第1の実施形態である内視鏡による内視鏡画像における処置具の揺動状態を説明する説明図、図8は本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部から突出した処置具による粘膜切開操作を説明する説明図、図9は本発明に係る内視鏡の全体構成を示す斜視図、図10は本発明に係る内視鏡の操作状態を説明する説明図、図11は本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部の洗滌状態を示す断面図である。   FIG. 1 is a plan view showing a distal end portion of an endoscope insertion portion which is a first embodiment of the endoscope of the present invention, and FIG. 2 is an endoscope which is the first embodiment of the endoscope of the present invention. FIG. 3 is a perspective view showing the distal end portion of the insertion portion, and FIG. 3 shows the distal end configuration portion excluding the front surface of the electrically insulating cover at the distal end portion of the endoscope insertion portion which is the first embodiment of the endoscope of the present invention. FIG. 4 is a plan view, FIG. 4 is a perspective view showing a first treatment instrument swinging table provided at the distal end portion of the endoscope insertion portion which is the first embodiment of the endoscope of the present invention, and FIG. FIG. 6 is a cross-sectional view showing the distal end portion of the endoscope insertion portion which is the first embodiment of the endoscope, cut from the BB ′ cutting line of FIG. 1, and FIG. 6 is a first embodiment of the endoscope of the present invention. FIG. 7 is a cross-sectional view showing the distal end portion of the endoscope insertion portion which is a form, cut along the AA ′ cutting line of FIG. 1, and FIG. 7 is an endoscope according to the first embodiment of the endoscope of the present invention. Processing in endoscopic images FIG. 8 is an explanatory view for explaining the swinging state of the instrument, and FIG. 8 is an explanatory view for explaining the mucosal incision operation by the treatment instrument protruding from the distal end portion of the endoscope insertion portion as the first embodiment of the endoscope of the present invention 9 is a perspective view showing the overall configuration of the endoscope according to the present invention, FIG. 10 is an explanatory diagram for explaining the operation state of the endoscope according to the present invention, and FIG. 11 is a first view of the endoscope according to the present invention. It is sectional drawing which shows the washing | cleaning state of the front-end | tip part of the endoscope insertion part which is this embodiment.

最初に、図9を用いて本発明に係る内視鏡の全体構成について説明する。本発明に係る内視鏡1は、挿入部2と、この挿入部2の基端に設けられた操作部3と、及びこの操作部3に接続されたライトガイド等が内挿されたユニバーサルコード4からなる。   Initially, the whole structure of the endoscope which concerns on this invention is demonstrated using FIG. The endoscope 1 according to the present invention includes a universal cord in which an insertion portion 2, an operation portion 3 provided at the proximal end of the insertion portion 2, and a light guide connected to the operation portion 3 are inserted. It consists of four.

挿入部2は、基端から順に細長な可撓性部材で形成された可撓管部12、上下左右方向に湾曲する湾曲部14、及び先端部5からなっている。この先端部5には、観察手段6、2つの照明窓7,7、観察手段6に対して送気送水するための送気送水用ノズル8、流体送出通路9、第1の処置具揺動台10、及び第2の処置具揺動台11が設けられている。   The insertion portion 2 includes a flexible tube portion 12 formed of an elongated flexible member in order from the base end, a bending portion 14 that bends in the vertical and horizontal directions, and a distal end portion 5. The distal end portion 5 has an observation means 6, two illumination windows 7, 7, an air / water supply nozzle 8 for supplying and supplying air to the observation means 6, a fluid delivery passage 9, and a first treatment instrument swing. A table 10 and a second treatment instrument swing table 11 are provided.

挿入部2の内部には、図示していないが第1の処置具挿通チャンネル15と、第2の処置具挿通チャンネル16が設けられている。第1の処置具挿通チャンネル15の先端側は、先端部5に設けられた第1の処置具揺動台10に開口しており、後端側は、操作部3に設けられている第1の開口部17に連通している。第2の処置具挿通チャンネル16の先端側は、先端部5に設けられた第2の処置具揺動台11に開口しており、後端側は、操作部3に設けられた第2の開口部18に連通している。   Although not shown, a first treatment instrument insertion channel 15 and a second treatment instrument insertion channel 16 are provided inside the insertion portion 2. The distal end side of the first treatment instrument insertion channel 15 is open to the first treatment instrument swinging base 10 provided in the distal end portion 5, and the rear end side is provided in the operation portion 3. Is communicated with the opening 17. The distal end side of the second treatment instrument insertion channel 16 is open to the second treatment instrument swing base 11 provided at the distal end portion 5, and the rear end side is the second treatment instrument provided at the operation portion 3. It communicates with the opening 18.

操作部3は、第1の処置具揺動台10を遠隔操作する挿入部3の基端側に設けられた第1の揺動台操作ノブ21と、この第1の揺動台操作ノブ21を操作すると第1の処置具揺動台10を揺動させる処置具揺動台操作機構が内蔵された第1の揺動台操作部19、この第1の揺動台操作部19になるべく接近させ、かつ、第1の揺動台操作部19の図中上側に設けられ第1の開口部17と第2の開口部18、この第1と第2の開口部17,18の図中上側に設けられ、操作部3を術者が把持する把持部50、この把持部50の図中上側に設けられ、第2の処置具揺動台11を遠隔操作する図示していない第2の揺動台操作機能が内蔵されており、その第2の揺動台操作機能の一部である第2の揺動台操作ノブ45が外部に設けられている。   The operation unit 3 includes a first rocking table operation knob 21 provided on the proximal end side of the insertion unit 3 for remotely operating the first treatment instrument rocking table 10, and the first rocking table operation knob 21. Is operated, the first oscillating table operating unit 19 incorporating the treatment instrument oscillating table operating mechanism for oscillating the first treatment instrument oscillating table 10 is as close as possible to the first oscillating table operating unit 19. And the first opening 17 and the second opening 18 which are provided on the upper side of the first swinging base operation unit 19 in the figure, and the upper sides of the first and second openings 17 and 18 in the figure. A grasping portion 50 that the operator grasps the operation portion 3, and a second swinging device (not shown) that is provided on the upper side of the grasping portion 50 and that remotely operates the second treatment instrument swinging table 11. A moving base operation function is built in, and a second swing base operation knob 45 which is a part of the second swing base operation function is provided outside.

この第2の揺動台操作ノブ45が設けられた操作部3の外部には、送気送水制御ボタン46、吸引制御ボタン47、画像記録ボタン48、及び湾曲部操作ノブ49等が設けられている。第2の揺動台操作ノブ45は、把持部50を把持する術者の左手親指で操作されるようになっており、第1の揺動台操作ノブ21は、湾曲操作ノブ49が設けられた同じ面側の第1の開口部17になるべく近接して設けられている。なお、第1の揺動台操作ノブは、通常は、右手により操作される。   An air / water supply control button 46, a suction control button 47, an image recording button 48, a bending portion operation knob 49, and the like are provided outside the operation unit 3 provided with the second swinging table operation knob 45. Yes. The second swing base operation knob 45 is operated by the left thumb of the surgeon holding the grip portion 50, and the first swing base operation knob 21 is provided with a bending operation knob 49. The first openings 17 on the same surface side are provided as close as possible. Note that the first swing base operation knob is normally operated with the right hand.

この内視鏡1は、図10に示すように、術者の左手Lにより操作部3の把持部50を把持して、第2の処置具揺動台11を遠隔操作する第2の揺動台操作ノブ22を操作しながら、送気送水制御ボタン46、吸引制御ボタン47、画像記録ボタン48、湾曲部操作ノブ49の操作を行なう。また、術者の右手Rは、第1の開口部17と第2の開口部18から第1の処置具挿通チャンネル15と第2の処置具挿通チャンネル16に挿通した第1処置具54と第2処置具56の進退操作、第1の揺動台操作ノブ21の操作、及び挿入部2の進退や捻り操作を行う。   As shown in FIG. 10, the endoscope 1 holds the grasping portion 50 of the operation portion 3 with the left hand L of the surgeon and remotely operates the second treatment instrument swinging table 11. While operating the table operation knob 22, the air / water supply control button 46, the suction control button 47, the image recording button 48, and the bending portion operation knob 49 are operated. Further, the right hand R of the surgeon has the first treatment instrument 54 and the first treatment instrument 54 inserted through the first treatment instrument insertion channel 15 and the second treatment instrument insertion channel 16 from the first opening 17 and the second opening 18. 2 The advancement / retraction operation of the treatment instrument 56, the operation of the first swinging base operation knob 21, and the advancement / retraction and twisting operation of the insertion portion 2 are performed.

このような内視鏡1の先端部5の先端面の構成について図1を用いて説明する。先端部5の先端面には、前述したように、正面の略中央部分に観察手段6、この観察手段6を挟むように設けた2つの照明窓7、7、観察手段6に対して送気送水する送気送水ノズル8、先端部5から前方に対して水や空気等の流体を送出する流体送出通路9、第1の処置具揺動台10、及び第2の処置具揺動台11が設けられている。   The configuration of the distal end surface of the distal end portion 5 of the endoscope 1 will be described with reference to FIG. As described above, air is supplied to the front end surface of the front end portion 5 with respect to the observation means 6, the two illumination windows 7 and 7 provided so as to sandwich the observation means 6, and the observation means 6. An air supply / water supply nozzle 8 for supplying water, a fluid delivery passage 9 for sending a fluid such as water or air from the front end portion 5 to the front, a first treatment instrument swing base 10 and a second treatment instrument swing base 11 Is provided.

本実施の形態における観察手段6は、観察光学系と、この観察光学系の焦点位置に配置された固体撮像素子によって構成され、その固体撮像素子により撮像された観察部位の撮像信号を基に、図示してないモニターに表示される内視鏡画像の画面の上方向が図中の矢印P方向である。   The observation means 6 in the present embodiment is composed of an observation optical system and a solid-state imaging device arranged at the focal position of the observation optical system, and based on an imaging signal of an observation site imaged by the solid-state imaging device. The upward direction of the endoscopic image displayed on the monitor (not shown) is the direction of arrow P in the figure.

第1の処置具揺動台10は、第1の処置具挿通チャンネル15と連通して、2本の操作ワイヤ32a、32bにより図中左右方向に揺動される。第2の処置具揺動台11は、第2の処置具挿通チャンネル16と連通して、1本の操作ワイヤ32cにより図中上下方向に揺動されるようになっている。第1の処置具揺動台10と第2の処置具揺動台11は、先端部5の先端面の正面から側面にかけて設けられた開口に収納されている。また、先端部5の側面の開口については、揺動する処置具、または第2の処置具揺動台11と干渉しない程度の最小限の大きさで開口されている。なお、第1の処置具揺動台10には、第1の処置具挿通チャンネル15から挿入された処置具を挿通する第1の処置具挿通部40が設けられ、第2の処置具揺動台11にも第2の処置具挿通チャンネル16から挿入された処置具が挿通される処置具挿通部が形成されている。   The first treatment instrument swinging base 10 communicates with the first treatment instrument insertion channel 15 and is swung in the left-right direction in the figure by the two operation wires 32a and 32b. The second treatment instrument swinging base 11 communicates with the second treatment instrument insertion channel 16 and swings in the vertical direction in the figure by a single operation wire 32c. The first treatment instrument swing base 10 and the second treatment instrument swing base 11 are housed in an opening provided from the front surface to the side surface of the distal end surface of the distal end portion 5. The opening on the side surface of the distal end portion 5 is opened with a minimum size that does not interfere with the oscillating treatment instrument or the second treatment instrument oscillating base 11. The first treatment instrument swinging base 10 is provided with a first treatment instrument insertion portion 40 through which the treatment instrument inserted from the first treatment instrument insertion channel 15 is inserted. A treatment instrument insertion portion through which a treatment instrument inserted from the second treatment instrument insertion channel 16 is inserted is also formed on the table 11.

また、この先端部5は、金属部材により硬質的に形成された先端構成部51であり、この先端構成部51の外表面は、電気絶縁部材にて形成された電気絶縁性カバー52によってほぼ全体に亘って覆われている。なお、この電気絶縁性カバー52は、第1の処置具揺動台10が揺動した際に、接触しないように部分的に外側に膨れた形状に形成されている。   The tip 5 is a tip component 51 that is rigidly formed of a metal member. The outer surface of the tip component 51 is substantially entirely covered by an electrically insulating cover 52 formed of an electrically insulating member. Covered. The electrically insulating cover 52 is formed in a shape that partially bulges outward so that it does not come into contact when the first treatment instrument swinging base 10 swings.

更に、観察手段6の視野の左右を等分する中心線Qと、第1の処置具揺動台10の揺動中心Rは、先端部5の正面から見た際に左右方向で一致させないで離れた状態、あるいは、ほぼ一致するような状態のいずれかの状態に観察手段6と第1の処置具揺動台10が配置されている。   Furthermore, the center line Q that equally divides the left and right sides of the visual field of the observation means 6 and the swing center R of the first treatment instrument swing base 10 do not coincide with each other when viewed from the front of the distal end portion 5. The observation means 6 and the first treatment instrument swinging table 10 are arranged in either a separated state or a state where they substantially coincide with each other.

先端部5の前方の観察方向に流体を送出する流体送出通路9は、第1の処置具揺動台10の図中右側で、第2の処置具揺動台11の図中下側に配置されている。この流体送出通路9の送出方向は、図2に示すように、先端部5の正面から見て、第1の処置具揺動台10の図中左右方向の揺動方向と略平行であり、観察手段6の視野の左右を等分する中心線Qに向かうように形成されている。   A fluid delivery passage 9 for delivering a fluid in the observation direction in front of the distal end portion 5 is arranged on the right side of the first treatment instrument swing base 10 in the drawing and on the lower side of the second treatment instrument swing base 11 in the drawing. Has been. As shown in FIG. 2, the delivery direction of the fluid delivery passage 9 is substantially parallel to the swinging direction of the first treatment instrument swinging table 10 in the horizontal direction as viewed from the front of the distal end portion 5. The observation means 6 is formed so as to be directed toward a center line Q that equally divides the left and right sides of the visual field.

この流体送出通路9の開口位置と、特に第1の処置具揺動台10の揺動方向に対する図中垂直方向の上下関係について、図2を併用して詳述すると、第1の処置具揺動台10の揺動方向に対して略垂直な方向の流体送出通路9の開口幅L1は、第1の処置具揺動台10から突出された処置具が左右方向に揺動された際の処置具の上下方向の揺動域の幅、すなわち、第1の処置具揺動台10の第1処置具挿通部40の上下幅L2内に配置されている。   The opening position of the fluid delivery passage 9 and the vertical relationship in the vertical direction in the figure with respect to the swinging direction of the first treatment instrument swinging base 10 will be described in detail with reference to FIG. The opening width L1 of the fluid delivery passage 9 in a direction substantially perpendicular to the swinging direction of the moving table 10 is such that the treatment tool protruding from the first treatment tool swinging table 10 is swung in the left-right direction. The width of the swinging range of the treatment tool in the vertical direction, that is, the vertical width L2 of the first treatment tool insertion portion 40 of the first treatment tool swinging base 10 is arranged.

また、流体送出通路9の送出方向は、第1の処置具揺動台10の第1処置具挿通部40から突出された処置具を左右方向に揺動させた際の図中斜線で示す処置具揺動域内を通過して観察手段6による観察視野の左右を等分する中心線Qに向かう送水方向ラインSとなるように設定されている。すなわち、先端部5の正面から見て、流体送出通路9からの送出方向ラインSは、先端部5の先端面から前方に処置具の揺動領域を投影した投影面積(図中の斜線部分)内に収まるように送出方向が設定されている。   In addition, the delivery direction of the fluid delivery passage 9 is indicated by a diagonal line in the figure when the treatment tool protruding from the first treatment instrument insertion portion 40 of the first treatment instrument swinging base 10 is swung in the left-right direction. It is set to be a water supply direction line S that passes through the device swinging region and is directed to a center line Q that equally divides the observation field of view by the observation means 6. That is, when viewed from the front of the distal end portion 5, the delivery direction line S from the fluid delivery passage 9 is a projection area (shaded portion in the drawing) in which the swing region of the treatment instrument is projected forward from the distal end surface of the distal end portion 5. The sending direction is set so as to be within the range.

なお、図1の図中の破線Gは、後述する第1のチャンネル開口53を正面から見た形状であり、図中の上下方向よりも左右方向に長い長円形状をしている。   A broken line G in FIG. 1 is a shape of a first channel opening 53 to be described later when viewed from the front, and has an oval shape that is longer in the left-right direction than in the vertical direction in the figure.

次に、先端部5の先端構成部51への第1の処置具揺動台10と第2の処置具揺動台11の収納について、図3を用いて説明する。この図3は、図1に示されている先端硬質部51の正面を覆っている電気絶縁性カバー52を除去した状態の平面図である。   Next, storage of the first treatment instrument swing base 10 and the second treatment instrument swing base 11 in the distal end configuration portion 51 of the distal end portion 5 will be described with reference to FIG. FIG. 3 is a plan view showing a state in which the electrically insulating cover 52 covering the front surface of the hard tip 51 shown in FIG. 1 is removed.

先端構成部51には、第1の処置具揺動台10を収納させる第1収納室28と、第2の処置具揺動台11を収納する第2収納室29が設けられている。この第1収納室28と第2収納室29は、流体送出通路9の近傍の図中Cの部分は連結されている。この第1収納室28と第2収納室29をC部分で連結されていることで、第1と第2の処置具揺動台10,10の後述する洗滌方法により洗滌が容易となる。   The distal end configuration portion 51 is provided with a first storage chamber 28 for storing the first treatment instrument swinging base 10 and a second storage chamber 29 for storing the second treatment instrument swinging base 11. The first storage chamber 28 and the second storage chamber 29 are connected to a portion C in the drawing in the vicinity of the fluid delivery passage 9. Since the first storage chamber 28 and the second storage chamber 29 are connected at the portion C, cleaning is facilitated by a cleaning method described later of the first and second treatment instrument swinging bases 10 and 10.

次に、第1の処置具揺動台10の構成について、図4を用いて説明する。この第1の処置具揺動台10は、全体形状が略円柱、楕円柱、あるいは一辺を円弧状に形成された角柱等の形状の部材に、操作部3の第1の開口部17から挿入され、第1の処置具挿通チャンネル15を挿通した処置具が導出される第1処置具挿通部40が形成されている。この第1の処置具揺動台10の下面41の中央部には、図示していない回転軸が装着される回転軸穴42が形成されている。この第1の処置具揺動台10の下面41と上面43には、互いに異なる方向に切り欠いた切り欠き面が形成されている。この切り欠き面の一方には、操作ワイヤ32aのワイヤ端末部材44aが回動自在に装着され、切り欠き面の他方には、操作ワイヤー32bのワイヤ端末部材44bが回動自在装着されている。つまり、2本の操作ワイヤ32a,32bを牽引することで、第1の処置具揺動台10は、回転軸穴42を基準に図中左から右、又は右から左へと回動させることができる。   Next, the configuration of the first treatment instrument swing base 10 will be described with reference to FIG. The first treatment instrument swing base 10 is inserted from a first opening 17 of the operation unit 3 into a member having an overall shape such as a substantially cylindrical shape, an elliptical column, or a rectangular column having one side formed in an arc shape. A first treatment instrument insertion portion 40 is formed through which the treatment instrument inserted through the first treatment instrument insertion channel 15 is led out. A rotation shaft hole 42 to which a rotation shaft (not shown) is attached is formed at the center of the lower surface 41 of the first treatment instrument swing base 10. The lower surface 41 and the upper surface 43 of the first treatment instrument swing base 10 are formed with notched surfaces that are notched in different directions. A wire terminal member 44a of the operation wire 32a is rotatably mounted on one of the cutout surfaces, and a wire terminal member 44b of the operation wire 32b is rotatably mounted on the other of the cutout surfaces. That is, by pulling the two operation wires 32a and 32b, the first treatment instrument swinging base 10 is rotated from the left to the right or from the right to the left in the drawing with respect to the rotation shaft hole 42. Can do.

なお、第2の処置具揺動台11は、第1の処置具揺動台10と略同じ構成で、操作ワイヤ32cにより図中上下方向に回転させることができるようになっている。   The second treatment instrument swing base 11 has substantially the same configuration as the first treatment instrument swing base 10 and can be rotated in the vertical direction in the figure by the operation wire 32c.

次に、この第1の処置具揺動台10と第1の処置具挿通チャンネル15に挿通された処置具の関係について、図5を用いて説明する。この図5は、図1に示す切断線B−B’から切断し、図中の矢印方向から見た断面図である。   Next, the relationship between the first treatment instrument swinging base 10 and the treatment instrument inserted through the first treatment instrument insertion channel 15 will be described with reference to FIG. FIG. 5 is a cross-sectional view taken along the cutting line B-B ′ shown in FIG. 1 and viewed from the direction of the arrows in the figure.

第1の処置具揺動台10は、操作部3の第1の開口部17に連通し、挿入部2の可撓管部12、湾曲部14、及び先端部5へと内蔵されている第1の処置具挿通チャンネル15の先端に接続された第1のチャンネル開口53が設けられ、この第1のチャンネル開口53の先端側近傍に図示していない回転軸を回転軸穴42に装着することで回動自在に取り付けられている。この第1のチャンネル開口53の幅W1は、第1の処置具挿通チャンネル15の内径W2よりも広く形成されている。   The first treatment instrument swinging base 10 communicates with the first opening 17 of the operation unit 3 and is built into the flexible tube part 12, the bending part 14, and the distal end part 5 of the insertion part 2. A first channel opening 53 connected to the distal end of one treatment instrument insertion channel 15 is provided, and a rotation shaft (not shown) is mounted in the rotation shaft hole 42 in the vicinity of the distal end side of the first channel opening 53. It is attached so that it can rotate freely. The width W1 of the first channel opening 53 is formed wider than the inner diameter W2 of the first treatment instrument insertion channel 15.

第1の開口部17から挿入され、第1の処置具挿通チャンネル15と第1のチャンネル開口53を挿通した第1の処置具54は、第1の処置具揺動台10の処置具挿通部40を介して先端部5の前方に位置する体腔内の病変部位へと突出される。この第1の処置具54を突出した第1の処置具揺動台10の操作ワイヤ32a、32bを遠隔操作によって牽引すると、図中2点鎖線で示す範囲を第1の処置具54が左右方向に揺動する。   The first treatment instrument 54 inserted from the first opening 17 and inserted through the first treatment instrument insertion channel 15 and the first channel opening 53 is a treatment instrument insertion portion of the first treatment instrument swinging base 10. It is projected through 40 to a lesion site in the body cavity located in front of the tip 5. When the operation wires 32a and 32b of the first treatment instrument swinging base 10 projecting from the first treatment instrument 54 are pulled by remote operation, the first treatment instrument 54 moves in the left-right direction within a range indicated by a two-dot chain line in the figure. Rocks.

この第1の処置具54の先端部5の先端面からの突出量Pは、病変部位の観察性と処置性に適した距離、例えば、15〜25mm程度ある。この第1の処置具54の突出量Pにおいて、この第1の処置具揺動台10による左右方向の揺動範囲は、揺動される第1の処置具54の先端が、観察手段6に設けられた観察光学系の視野範囲Fを超えないようにする。また、流体送出通路9は、前述したように、観察手段6の観察視野の左右を等分する中心線Qに向けて設けた送出方向Sとなるように形成されて、先端部5の先端面から図中の後方の距離Eの位置に開口されている。なお、電気絶縁性カバー52の側面は、第1の処置具54が揺動した際に、当接しないように、切り欠け部30が設けられている。   The protrusion amount P from the distal end surface of the distal end portion 5 of the first treatment instrument 54 is a distance suitable for the observation and treatment properties of the lesion site, for example, about 15 to 25 mm. With respect to the protrusion amount P of the first treatment instrument 54, the rocking range in the left-right direction by the first treatment instrument swinging base 10 is such that the tip of the swinging first treatment instrument 54 is placed on the observation means 6. The visual field range F of the provided observation optical system is not exceeded. Further, as described above, the fluid delivery passage 9 is formed so as to be in the delivery direction S provided toward the center line Q that equally divides the observation visual field of the observation means 6, and the distal end surface of the distal end portion 5. To the position of the distance E in the rear in the figure. The side surface of the electrically insulating cover 52 is provided with a notch 30 so as not to contact when the first treatment instrument 54 swings.

次に、第2の処置具揺動台11と第2の処置具挿通チャンネル16に挿通された処置具の関係について、図6を用いて説明する。この図6は、図1に示す切断線A−A’から切断し、図中の矢印方向から見た断面図である。   Next, the relationship between the second treatment instrument swing base 11 and the treatment instrument inserted through the second treatment instrument insertion channel 16 will be described with reference to FIG. 6 is a cross-sectional view taken along the cutting line A-A ′ shown in FIG. 1 and viewed from the direction of the arrow in the drawing.

第2の処置具揺動台11は、第2の処置具挿通チャンネル16が接続された第2のチャンネル開口55の先端側近傍に回動自在に取り付けられている。この第2の処置具揺動台11の中心には、第2処置具56が挿通される第2処置具挿通部57が形成され、この第2処置具挿通部57を挿通して、先端部5の先端面から体腔内に突出された第2処置具56は、操作ワイヤ32cを遠隔操作することにより、図中2点鎖線で示した範囲まで上下方向に揺動する。この第2の処置具56の先端部5の先端面からの突出量Uは、病変部位の観察性/処置性に適した距離、例えば15〜25mmであり、この第2処置具56の先端の上下方向の揺動は、観察手段6の上下方向の観察視野範囲Yを超えないようにしている。   The second treatment instrument swinging base 11 is rotatably attached in the vicinity of the distal end side of the second channel opening 55 to which the second treatment instrument insertion channel 16 is connected. A second treatment instrument insertion portion 57 through which the second treatment instrument 56 is inserted is formed at the center of the second treatment instrument swinging base 11, and the distal end portion is inserted through the second treatment instrument insertion portion 57. The second treatment tool 56 projected from the distal end surface 5 into the body cavity swings up and down to a range indicated by a two-dot chain line in the figure by remotely operating the operation wire 32c. The protrusion amount U from the distal end surface of the distal end portion 5 of the second treatment instrument 56 is a distance suitable for observability / treatment performance of the lesion site, for example, 15 to 25 mm. The swing in the vertical direction does not exceed the observation field range Y in the vertical direction of the observation means 6.

なお、第2の処置具揺動台11を完全に倒置させた際に、第2処置具56の先端が第1処置具54の左右方向の揺動の高さには達しないに設定されている。つまり、第2の処置具揺動台11を完全に倒置させて、第2の処置具56を先端部5の軸方向と真っ直ぐ突出させた状態で、第1の処置具揺動台10により第1の処置具54を左右方向に揺動しても第1の処置具54が第2の処置具56と当接しない位置関係に設定されている。   It should be noted that when the second treatment instrument swinging table 11 is completely inverted, the tip of the second treatment instrument 56 is set so as not to reach the height of the first treatment instrument 54 swinging in the left-right direction. Yes. In other words, the second treatment instrument swinging table 11 is completely inverted and the second treatment instrument 56 is projected straight from the axial direction of the distal end portion 5 by the first treatment instrument swinging table 10. The positional relationship is set such that the first treatment instrument 54 does not contact the second treatment instrument 56 even if the first treatment instrument 54 is swung in the left-right direction.

このような構成の内視鏡を用いて、体腔内の内視鏡観察の基で、処置具による病変部位の粘膜切開処置について、図7と図8を用いて説明する。   A mucosal incision treatment of a lesion site using a treatment tool based on endoscopic observation in a body cavity using the endoscope having such a configuration will be described with reference to FIGS.

図7は、観察手段6から観察される内視鏡画像を示し、この内視鏡画像に図5と図6を用いて説明した第1の処置具揺動台10と第2の処置具揺動台11により揺動された第1の処置具54と第2の処置具56の先端が図中の矢印の範囲内で揺動し、及び流体送出通路9からの送出が前方送出ラインSとして内視鏡画像に映し出される。   FIG. 7 shows an endoscopic image observed from the observation means 6, and the first treatment instrument swinging table 10 and the second treatment instrument shake described with reference to FIGS. 5 and 6 are added to the endoscopic image. The distal ends of the first treatment instrument 54 and the second treatment instrument 56 swung by the moving table 11 swing within the range of the arrow in the figure, and the delivery from the fluid delivery passage 9 is the front delivery line S. Projected on an endoscopic image.

この第1の処置具54と第2の処置具56の揺動、及び前方送出ラインSが映し出された内視鏡画像による観察の基で、体腔内の病変粘膜を切開する操作について、図8を用いて説明する。   FIG. 8 shows the operation of incising the lesion mucous membrane in the body cavity based on the swing of the first treatment tool 54 and the second treatment tool 56 and the observation by the endoscopic image in which the front delivery line S is projected. Will be described.

最初に、体腔内の病変部近傍まで挿入された内視鏡挿入部2の第1の処置具挿通チャンネル15に注射針を備えた処置具を挿通させて、病変粘膜の下層に生理食塩水などの薬液を注入し、病変粘膜を含む粘膜層全体を***させる。   First, a treatment instrument having an injection needle is inserted into the first treatment instrument insertion channel 15 of the endoscope insertion part 2 inserted to the vicinity of the lesion part in the body cavity, and physiological saline or the like is placed below the lesion mucous membrane. The whole liquid mucosa layer including the lesioned mucosa is raised.

次に、図中点線で示すように、第2の処置具挿通チャンネル16から突出させた第2処置具56である把持鉗子39を用いて、病変粘膜又はその周辺を把持して、第2の処置具揺動台11により把持鉗子39を、図中実線で示すように起上操作して病変部を含む粘膜を吊り上げる。   Next, as shown by the dotted line in the figure, the lesioned mucosa or its periphery is grasped using the grasping forceps 39 that is the second treatment instrument 56 protruding from the second treatment instrument insertion channel 16, The grasping forceps 39 is raised by the treatment instrument swinging base 11 as shown by a solid line in the figure to lift the mucous membrane including the lesioned part.

次に、第1の処置具挿通チャンネル15に第1処置具54である高周波ナイフ37に入れ換えて挿通し、第1の処置具揺動台10を左右に揺動操作して、把持鉗子39により吊り上げた病変粘膜の麓または粘膜下層を高周波ナイフ37を当接させて左右方向に揺動させながら通電して切開する。 Next, the first treatment instrument insertion channel 15 is replaced with the high-frequency knife 37 that is the first treatment instrument 54, and the first treatment instrument swinging base 10 is swung left and right, and the grasping forceps 39 is used. An incision is made by energizing the fold or submucosa of the suspended lesioned mucosa with the high-frequency knife 37 in contact with the left-right direction and swinging in the left-right direction.

この第1の処置具54である高周波ナイフ37により病変粘膜の下層を通電切開時の患部の洗滌は、流体送出通路9から前方へ送出された洗滌水により行い、その洗滌後の洗滌水は、第1の処置具挿通チャンネル15を用いて図示していない吸引ポンプを用いて外部へと吸引する。   Washing of the affected area at the time of energization incision of the lower layer of the lesioned mucosa with the high-frequency knife 37 as the first treatment instrument 54 is performed by washing water sent forward from the fluid delivery passage 9, and the washing water after washing is The first treatment instrument insertion channel 15 is used to suck outside using a suction pump (not shown).

また、上述したように、一般に高周波ナイフ37により病変粘膜を切開する際に、高周波ナイフ37の刃先に粘膜の組織が付着する。その組織の付着した状態により切開処置をを続けると、付着した粘膜が炭化して高周波ナイフ37の切れ味が低下する。   Further, as described above, when the lesioned mucosa is generally incised by the high-frequency knife 37, the mucosal tissue adheres to the cutting edge of the high-frequency knife 37. If the incision treatment is continued with the tissue attached, the attached mucosa is carbonized and the sharpness of the high-frequency knife 37 is reduced.

そこで、高周波ナイフ37に切開した粘膜の組織が付着すると、第1の処置具揺動台10により高周波ナイフ37を流体送出通路9の前方送出ラインS方向に移動させて、流体送出通路9から洗滌水、または空気等の流体を送出する。この流体送出通路9の前方送出ラインSの位置に移動された高周波ナイフ37に対して、流体送出通路9からの流体によって高周波ナイフ37に付着した粘膜の組織を除去することができるようになる。   Therefore, when the cut mucosal tissue adheres to the high-frequency knife 37, the high-frequency knife 37 is moved in the direction of the front delivery line S of the fluid delivery passage 9 by the first treatment instrument swinging base 10, and washing is performed from the fluid delivery passage 9. Deliver water or fluid such as air. With respect to the high-frequency knife 37 moved to the position of the front delivery line S of the fluid delivery passage 9, the mucosal tissue attached to the high-frequency knife 37 can be removed by the fluid from the fluid delivery passage 9.

つまり、前方送水光9の送出方向を観察手段6の視野の左右を等分する中心線Qとし、かつ、第1の処置具揺動台10による揺動領域内を貫通する前方送出ラインSに設定したことで、この前方送出ラインSに第1の処置具54である高周波ナイフ37を移動させることで、前方送出された流体による高周波ナイフ37の洗滌が可能となる。   That is, the transmission direction of the forward water-feeding light 9 is set to the center line Q that equally divides the visual field of the observation means 6 into the left and right, and the forward delivery line S that penetrates the swing region by the first treatment instrument swing base 10. By setting, the high-frequency knife 37 that is the first treatment instrument 54 is moved to the front delivery line S, so that the high-frequency knife 37 can be washed with the fluid delivered forward.

これにより、高周波ナイフ37を第1の処置具挿通チャンネル15に挿入させた状態で、粘膜切開と洗滌を交互に繰り返しながら切開行為が行えるようになるので、切開操作の効率が向上する。   Accordingly, incision action can be performed while the high-frequency knife 37 is inserted into the first treatment instrument insertion channel 15 while alternately repeating mucosal incision and washing, thereby improving the efficiency of the incision operation.

ところで、従来、流体送出通路9からの前方に送出した洗滌水により広い患部範囲を洗滌する場合には、挿入部2の湾曲部14を湾曲操作させながら前方送水させていたが、本発明の内視鏡では、流体送出通路9から洗滌水を前方送水しながら、第1の処置具揺動台10により第1の処置具54を揺動させると、流体送出通路9から送水された洗滌水が第1処置具54の表面を伝わって送水されるために、流体送出通路9から狭い前方送出ラインSで送水され洗滌水が第1の処置具54で拡散されて広範囲の洗滌が可能となる。この結果、従来のように湾曲操作を行わずに処置具の揺動操作のみによる簡素な操作で広範囲の洗滌が可能となる。   By the way, conventionally, when washing a wide affected area with washing water sent forward from the fluid delivery passage 9, water is fed forward while bending the bending portion 14 of the insertion portion 2. In the endoscope, when the first treatment instrument 54 is swung by the first treatment instrument swinging table 10 while the washing water is being fed forward from the fluid delivery passage 9, the washing water fed from the fluid delivery path 9 is washed away. Since water is transmitted along the surface of the first treatment instrument 54, water is fed from the fluid delivery passage 9 through the narrow forward delivery line S, and the washing water is diffused by the first treatment instrument 54, so that a wide range of washing is possible. As a result, a wide range of washing can be performed with a simple operation only by a swinging operation of the treatment instrument without performing a bending operation as in the prior art.

なお、本発明の内視鏡の第1の処置具揺動台10には、図5を用いて説明したように、第1の処置具挿通チャンネル15の先端には第1のチャンネル開口53が接続されている。この第1のチャンネル開口は、図1の図中の破線Gで示すように正面から見て図中の上下方向よりも左右方向に長い長円形状をしている。このため、第1処置具54が第1の処置具揺動台10と先端構成部51に挟まれることなく広角に揺動できて第1の処置具54による切開作業の効率が向上する。また、この第1のチャンネル開口53の揺動方向の開口幅W1は、第1の処置具挿通チャンネルの15の内径W2よりも大きくしたことにより、第1の処置具揺動台10により揺動された第1の処置具54の第1のチャンネル開口53内での撓みが大きくとれることから第1の処置具54の揺動範囲を大きくすることができる。また、この第1のチャンネル開口53の垂直方向の開口幅は、揺動方向より狭くしても第1の処置具54の揺動に影響がないため先端部5の外径を細くすることが可能となる。   As described with reference to FIG. 5, the first treatment instrument swinging base 10 of the endoscope of the present invention has the first channel opening 53 at the distal end of the first treatment instrument insertion channel 15. It is connected. The first channel opening has an oval shape that is longer in the left-right direction than the up-down direction in the figure as seen from the front, as indicated by a broken line G in the figure of FIG. For this reason, the first treatment instrument 54 can be swung at a wide angle without being sandwiched between the first treatment instrument swinging base 10 and the distal end constituting portion 51, and the efficiency of the incision work by the first treatment instrument 54 is improved. Further, the opening width W1 of the first channel opening 53 in the swinging direction is made larger than the inner diameter W2 of the first treatment instrument insertion channel 15, so that the first treatment instrument swinging base 10 swings. Since the bending of the first treatment instrument 54 in the first channel opening 53 can be increased, the swing range of the first treatment instrument 54 can be increased. Further, even if the opening width in the vertical direction of the first channel opening 53 is narrower than the swinging direction, the swinging of the first treatment instrument 54 is not affected. Therefore, the outer diameter of the distal end portion 5 can be reduced. It becomes possible.

更に、第1の処置具揺動台10が収納された第1収納室28の開口部は、電気絶縁性カバー52が一部異形にして、切り欠き部30が設けられているため、第1処置具54や第1の処置具揺動台10が電気絶縁性カバー52に当接することなく、第1処置具54を広角に揺動できる。すなわち、先端部5の外径を極力大きくすることなく広範囲な切開が可能な内視鏡を提供できる。   Furthermore, the opening of the first storage chamber 28 in which the first treatment instrument swinging base 10 is stored is partially modified by the electrically insulating cover 52 and the notch 30 is provided. The first treatment instrument 54 can be swung at a wide angle without the treatment instrument 54 and the first treatment instrument swinging table 10 coming into contact with the electrically insulating cover 52. That is, it is possible to provide an endoscope that can perform a wide range of incisions without increasing the outer diameter of the distal end portion 5 as much as possible.

更にまた、流体送出通路9の開口位置を先端部5の先端面から距離Eの位置に設けたために、先端部5が粘膜に密着、もしくは近接した状態で前方送出して流体送出通路9の開口端と粘膜間の最低距離Eが確保できるために、粘膜に対する送水圧を低くすることができる。   Furthermore, since the opening position of the fluid delivery passage 9 is provided at a distance E from the distal end surface of the distal end portion 5, the fluid delivery passage 9 is forwardly delivered while the distal end portion 5 is in close contact with or close to the mucous membrane. Since the minimum distance E between the end and the mucous membrane can be secured, the water supply pressure to the mucous membrane can be lowered.

ところで、内視鏡は、体腔内の観察や処置具を用いた治療処置が終了すると洗滌する必要がある。この内視鏡の洗滌において、洗滌ブラシを用いて処置具揺動台が設けられた形状や構造が複雑な内視鏡挿入部2の先端構成部51を洗滌する際に、複雑な形状と構造の隅々まで洗滌するには、多くの手間がかかっている。また、処置具揺動台が複数設けられると一層形状構造が複雑化して、洗滌ブラシが届きにくい部分ができてしまい、洗滌に多くの労力と細心の注意を払わなければならなかった。   By the way, the endoscope needs to be washed when the observation inside the body cavity and the therapeutic treatment using the treatment tool are completed. In the cleaning of the endoscope, when the distal end constituting portion 51 of the endoscope insertion portion 2 having a complicated shape or structure provided with the treatment instrument swinging table is cleaned using a cleaning brush, the complicated shape and structure are used. It takes a lot of work to wash every corner of the house. In addition, when a plurality of treatment instrument swinging stands are provided, the shape structure is further complicated, and a portion where the cleaning brush is difficult to reach is formed, and much labor and great care must be taken in cleaning.

そこで、処置具揺動台が挿入部の先端部に設けられた内視鏡の洗滌を簡単に、確実に行える内視鏡を提供する。図3を用いて上述したように、内視鏡挿入部2の先端部5の先端構成部52には、第1の処置具揺動台10と第2の処置具揺動台11を収納する第1収納室28と第2収納室29が図中C部分で連結して形成している。   Therefore, there is provided an endoscope in which a treatment instrument swinging table can easily and reliably clean an endoscope provided at the distal end portion of an insertion portion. As described above with reference to FIG. 3, the first treatment instrument swing base 10 and the second treatment instrument swing base 11 are housed in the distal end configuration portion 52 of the distal end portion 5 of the endoscope insertion portion 2. The first storage chamber 28 and the second storage chamber 29 are formed by being connected at a portion C in the drawing.

このような形状構造の先端構成部52の外周を覆っている電気絶縁性カバー52の外周と先端面に、図11に示すように、洗滌用キャップ33aを装着可能とする。この洗滌用キャップ33aは、ゴム等の弾性材によって形成され、先端部5の先端面と先端面側の外周に着脱自在に装着可能である。   As shown in FIG. 11, a washing cap 33a can be attached to the outer periphery and the front end surface of the electrically insulating cover 52 covering the outer periphery of the tip structure portion 52 having such a shape structure. The washing cap 33a is formed of an elastic material such as rubber, and can be detachably attached to the distal end surface of the distal end portion 5 and the outer periphery on the distal end surface side.

先端部5の洗滌時に、洗滌用キャップ33aを装着された後、流体送出通路9から洗滌水を送水すると、その洗滌水は、図中矢印で示すように、洗滌用キャップ33aにより跳ね返り、第1の処置具揺動台10の第1収納室28へと循環し、かつ、第1収納室28から第2の処置具揺動台11が収納されている第2収納室29へとCの連結部分から循環する。   When washing water is supplied from the fluid delivery passage 9 after the washing cap 33a is attached at the time of washing the front end portion 5, the washing water bounces back by the washing cap 33a as shown by an arrow in the drawing, and the first Circulates to the first storage chamber 28 of the treatment instrument swing base 10 and connects the C from the first storage chamber 28 to the second storage chamber 29 in which the second treatment instrument swing base 11 is stored. Cycle from the part.

すなわち、洗滌用キャップ33aを先端部5の先端面側に装着して、流体送出通路9から洗滌水を送水すると、その洗滌水が洗滌キャップ33aにより第1と第2の処置具揺動台10,11が収納された第1と第2収納室28,29へと循環されて、第1と第2の処置具揺動台10,11を確実に洗滌できる。   That is, when the cleaning cap 33a is attached to the distal end surface side of the distal end portion 5 and washing water is fed from the fluid delivery passage 9, the washing water is fed by the washing cap 33a to the first and second treatment instrument swing bases 10. , 11 are circulated to the first and second storage chambers 28, 29 in which the first and second treatment instrument swing bases 10, 11 are reliably washed.

なお、その第1と第2の処置具揺動台10,11を洗滌した洗滌水は、第1と第2処置具挿通チャンネル15,16を用いて排水する。   In addition, the washing water which wash | cleaned the 1st and 2nd treatment tool rocking | fluctuation bases 10 and 11 is drained using the 1st and 2nd treatment tool penetration channels 15 and 16. FIG.

図11では、洗滌用キャップ33aは、先端部5の先端面全面を覆っているが、少なくとも流体送出通路9からの前方送水された洗滌水を跳ね返す位置、つまり、前方送出ラインS上の洗滌水を跳ね返す壁が設けられているば良く、それ以外の部分は一部開口がある形状でも良い。このような形状であると第1と第2収納室28,29内を洗滌した洗滌水は、一部開口から外部に流出させることができるために、洗滌済みの洗滌水を先端部5の他の管路内に入り込みにくくすることができる。   In FIG. 11, the washing cap 33 a covers the entire tip surface of the tip portion 5, but at least the position where the washing water fed forward from the fluid delivery passage 9 bounces back, that is, the washing water on the forward delivery line S. It is only necessary to provide a wall that rebounds, and the other part may have a shape with a partial opening. With such a shape, the washing water that has been washed in the first and second storage chambers 28 and 29 can flow out of the opening from a part of the opening. It is possible to make it difficult to enter the pipe line.

次に、本発明の第2の実施形態の内視鏡について、図12乃至図15を用いて説明する。図12は本発明の第2の実施形態の内視鏡の先端部の構成を示す平面図、図13は本発明の第2の実施形態の内視鏡の先端部の構成を示し、図12に示す切断線U−Uから切断した断面図、図14は本発明の第2の実施形態の内視鏡の先端部の構成を示し、図12に示す切断線Z−Zから切断した断面図、図15は本発明の第2の実施形態の内視鏡の先端部の洗滌作用を説明する断面図である。なお、上述した図1乃至図11と同一部分は、同一符号を付して詳細説明は省略する。   Next, an endoscope according to a second embodiment of the present invention will be described with reference to FIGS. 12 is a plan view showing the configuration of the distal end portion of the endoscope according to the second embodiment of the present invention, and FIG. 13 shows the configuration of the distal end portion of the endoscope according to the second embodiment of the present invention. FIG. 14 is a cross-sectional view taken along the cutting line U-U shown in FIG. 14, and FIG. 14 is a cross-sectional view taken along the cutting line ZZ shown in FIG. FIG. 15 is a cross-sectional view illustrating the cleaning action of the distal end portion of the endoscope according to the second embodiment of the present invention. The same parts as those in FIGS. 1 to 11 described above are denoted by the same reference numerals, and detailed description thereof is omitted.

この第2の実施形態の内視鏡の先端部5’は、上述した第1の実施形態の先端部5に設けられている流体送出通路9の開口形状、及び前方送水方向が異なっている。この第2の実施形態の先端部5’に設けられる流体送出通路9の開口位置は、図12に示すように、上述した第1の実施形態と同様に、第1の処置具揺動台10の揺動方向に対して略垂直な方向の流体送出通路9の開口幅L1は、第1の処置具揺動台10から突出された処置具が左右方向に揺動された際の処置具の上下方向の揺動域の幅、すなわち、第1の処置具揺動台10の第1処置具挿通部40の上下幅L2内に配置されている。   The distal end portion 5 'of the endoscope according to the second embodiment is different in the opening shape of the fluid delivery passage 9 provided in the distal end portion 5 of the first embodiment and the forward water feeding direction. As shown in FIG. 12, the opening position of the fluid delivery passage 9 provided in the distal end portion 5 ′ of the second embodiment is the same as that of the first embodiment described above, as in the first embodiment. The opening width L1 of the fluid delivery passage 9 in a direction substantially perpendicular to the swinging direction of the treatment tool is that of the treatment tool when the treatment tool protruding from the first treatment tool swinging base 10 is swung in the left-right direction. The width of the swinging area in the vertical direction, that is, the vertical width L2 of the first treatment instrument insertion portion 40 of the first treatment instrument swinging base 10 is arranged.

この流体送出通路9’の先端部5’の先端面の開口形状は、先端部5’の先端面を正面から見て、図中の上下方向に長円形に形成されている。つまり、図13に示すように、流体送出通路9’の断面形状は、先端部5’の先端面側に向かって図中上下方向に広がる形状に形成されている。つまり、流体送出通路9’からの送水は、開口形状の上下に長い長円形状の送水形状となる。   The opening shape of the distal end surface of the distal end portion 5 ′ of the fluid delivery passage 9 ′ is formed in an oval shape in the vertical direction in the drawing when the distal end surface of the distal end portion 5 ′ is viewed from the front. That is, as shown in FIG. 13, the cross-sectional shape of the fluid delivery passage 9 ′ is formed so as to expand in the vertical direction in the drawing toward the distal end surface side of the distal end portion 5 ′. That is, the water supply from the fluid delivery passage 9 ′ has an oval water supply shape that is long up and down the opening shape.

この流体送出通路9’の前方送出ラインSは、図14に示すように、観察手段6の視野の左右を等分する中心線Qに送水するように設定してなく、略平行になるように設定されている。つまり、図2を用いて説明したように、第1の処置具揺動台10による揺動領域を通過させる前方送出ラインSとなるように設定されていれば良く、その揺動領域内を長円形状の水が送水させるために、第1の処置具揺動台10により揺動される第1の処置具54に付着している粘膜組織の除去と、切開処置している患部の洗滌が可能となる。   As shown in FIG. 14, the forward delivery line S of the fluid delivery passage 9 'is not set to feed water to a center line Q that equally divides the left and right sides of the visual field of the observation means 6, but is substantially parallel. Is set. That is, as described with reference to FIG. 2, it is only necessary to set the front delivery line S that allows the first treatment instrument rocking table 10 to pass through the rocking region. The removal of mucosal tissue adhering to the first treatment instrument 54 oscillated by the first treatment instrument oscillating base 10 and the washing of the affected part being incised are performed in order to feed circular water. It becomes possible.

また、この先端部5’に、図15に示すような洗滌用キャップ33bが装着可能となっている。この洗滌用キャップ33bは、先端部5’の流体送出通路9’が開口している先端面側に装着される。この洗滌用キャップ33bの内側には、先端部5’の流体送出通路9’の前方送出ラインSに対向する部分に凹部36が形成されている。この凹部36の一部は、第1の処置具揺動台10の第1収納室28にかかっている。   Further, a washing cap 33b as shown in FIG. 15 can be attached to the tip portion 5 '. The washing cap 33b is attached to the distal end surface side where the fluid delivery passage 9 'of the distal end portion 5' is open. On the inner side of the washing cap 33b, a recess 36 is formed at a portion of the tip 5 'facing the front delivery line S of the fluid delivery passage 9'. A part of the recess 36 is in the first storage chamber 28 of the first treatment instrument swing base 10.

この洗滌キャップ33bを装着して、流体送出通路9’から洗滌水を前方送水すると、その洗滌水は、洗滌キャップ33bの凹部36により跳ね返されて、第1収納室28内を循環して第1処置具揺動台10を洗滌すると共に、その洗滌水は第2収納室29への循環して第2の処置具揺動台11も洗滌する。   When the washing cap 33b is attached and washing water is fed forward from the fluid delivery passage 9 ', the washing water is rebounded by the recess 36 of the washing cap 33b and circulates in the first storage chamber 28 for the first. The treatment instrument swinging table 10 is washed, and the washing water is circulated to the second storage chamber 29 to wash the second treatment instrument swinging table 11.

次に、本発明の第3の実施形態の内視鏡について、図16乃至図18を用いて説明する。図16は本発明の第3の実施形態の内視鏡の先端部の構成を示す平面図、図17は本発明の第3の実施形態の内視鏡の内視鏡画像における処置具の揺動動作を説明する説明図、図18は本発明の第3の実施形態の内視鏡の操作を説明する説明図である。なお、図1乃至図15と同一部分は、同一符号を付して詳細説明は省略する。   Next, an endoscope according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 16 is a plan view showing the configuration of the distal end portion of the endoscope according to the third embodiment of the present invention, and FIG. 17 shows the shaking of the treatment instrument in the endoscope image of the endoscope according to the third embodiment of the present invention. FIG. 18 is an explanatory diagram for explaining the operation of the endoscope according to the third embodiment of the present invention. The same parts as those in FIGS. 1 to 15 are denoted by the same reference numerals, and detailed description thereof is omitted.

この第3の実施形態の内視鏡は、第1の処置具揺動台10’と第2の処置具揺動台11’が上述した第1の処置具揺動台10と第2の処置具揺動台11と異なる。この第3の実施形態の内視鏡は、上述した第1の実施形態の第1と第2の処置具揺動台を入れ替えた構成となっている。   In the endoscope according to the third embodiment, the first treatment instrument rocking table 10 ′ and the second treatment tool rocking table 11 ′ have the first treatment tool rocking table 10 and the second treatment described above. Different from the tool swing table 11. The endoscope according to the third embodiment has a configuration in which the first and second treatment instrument swing bases of the first embodiment described above are interchanged.

この第3の実施形態の内視鏡の先端部5”は、図16に示すように、1本の操作ワイヤ32c’により左右方向に揺動される第1の処置具揺動台10’と、2本の操作ワイヤ32a’,32b’により上下方向に揺動される第2の処置具揺動台11’が設けられている。この第1の処置具揺動台10’には、把持鉗子である第1の処置具54’を挿通させて揺動させ、第2の処置具揺動台11’には、高周波ナイフなどの切開処置具である第2の処置具56’を挿通させて揺動させる。なお、この第1と第2の処置具揺動台10’,11’以外は、第1の実施形態と同じであり、特に流体送出通路9の開口位置、及び前方送出ラインSも図2を用いて説明したと同じである。   As shown in FIG. 16, the distal end portion 5 ″ of the endoscope according to the third embodiment includes a first treatment instrument rocking table 10 ′ that is rocked in the left-right direction by a single operation wire 32c ′. A second treatment instrument oscillating base 11 ′ that is vertically oscillated by the two operation wires 32a ′ and 32b ′ is provided. The first treatment instrument 54 ′, which is a forceps, is inserted and swung, and the second treatment tool 56 ′, which is an incision treatment instrument, such as a high-frequency knife, is inserted into the second treatment instrument swinging base 11 ′. The first and second treatment instrument swinging bases 10 'and 11' are the same as those in the first embodiment, particularly the opening position of the fluid delivery passage 9 and the front delivery line. S is also the same as described with reference to FIG.

この第1の処置具揺動台10’の第1処置具挿通部40’は、挿通される図示していない把持鉗子である第1処置具54’の全周状を覆う筒状の形状をしているが、一部切り欠かれた形状でも良い。ちなみに、図中のVは、第1のチャンネル開口53であり、第1の処置具揺動台10が倒置した状態で、第1の処置具54を第1処置具挿通部40に挿通すると、第1の処置具54は、正面から見た時、流体送出通路9側に傾いて突出するようになっている。   The first treatment instrument insertion portion 40 ′ of the first treatment instrument swing base 10 ′ has a cylindrical shape that covers the entire circumference of the first treatment instrument 54 ′ that is a grasping forceps (not shown) to be inserted. However, a partially cut shape may be used. Incidentally, V in the figure is the first channel opening 53, and when the first treatment instrument 54 is inserted into the first treatment instrument insertion portion 40 in a state where the first treatment instrument swinging base 10 is inverted, The first treatment instrument 54 is inclined and protrudes toward the fluid delivery passage 9 when viewed from the front.

この先端部5”の構成の内視鏡の観察手段6により撮らえた内視鏡画像における第1の処置具揺動台10’と第2の処置具揺動台11’からそれぞれ突出される把持鉗子である第1処置具54’と高周波ナイフである第2処置具56’の揺動動作は、図17に示すように、図中矢印の範囲で揺動し、流体送出通路9から前方送水される前方送出ラインSが認識される。   Grip that protrudes from the first treatment instrument rocking table 10 'and the second treatment tool rocking table 11' in the endoscopic image taken by the observation means 6 of the endoscope having the configuration of the tip 5 ". As shown in FIG. 17, the swinging operation of the first treatment tool 54 ′ that is the forceps and the second treatment tool 56 ′ that is the high-frequency knife swings within the range indicated by the arrow in FIG. The forward delivery line S to be recognized is recognized.

前方送出ラインSは、第1処置具54’と第2の処置具56’の両方に送出する。つまり、前方送出ラインSは、第1処置具54’の揺動領域と、第2処置具56’の揺動領域との交叉する領域を貫通する向きに構成されている。   The front delivery line S delivers to both the first treatment instrument 54 'and the second treatment instrument 56'. That is, the forward delivery line S is configured to pass through a region where the swing region of the first treatment instrument 54 'and the swing region of the second treatment tool 56' intersect.

なお、第1の処置具54’と第2の処置具56’の先端部5”の先端面からの突出量は、病変部の観察性/処置性に適した距離、例えば15〜25mmである。   In addition, the protrusion amount from the distal end surface of the distal end portion 5 ″ of the first treatment instrument 54 ′ and the second treatment instrument 56 ′ is a distance suitable for the observability / treatment property of the lesioned part, for example, 15 to 25 mm. .

このように、第1の処置具揺動台と第2の処置具揺動台の構成を異ならせても、上述した第1の実施形態と同様の作用と効果が得られる。   As described above, even if the configurations of the first treatment instrument rocking table and the second treatment tool rocking table are made different from each other, the same operations and effects as those of the first embodiment described above can be obtained.

また、この先端部5”の第1の処置具揺動台10’の1本操作ワイヤ32c’は、図18に示す操作部3’の第1の揺動台操作ノブ21’を有する揺動台操作部19’によって操作され、第2の処置具揺動台11’の2本の操作ワイヤ32a’,32b’は、操作部6’の第2の揺動台操作ノブ45により操作される。   Further, the single operation wire 32c ′ of the first treatment instrument swing base 10 ′ at the distal end portion 5 ″ has a first swing base operation knob 21 ′ of the operation section 3 ′ shown in FIG. The two operation wires 32a ′ and 32b ′ of the second treatment instrument swing table 11 ′ are operated by the second swing table operation knob 45 of the operation unit 6 ′. .

ところで、一般に内視鏡の操作は、図10を用いて説明したように、左手で操作部3の把持部を把持した際に、右手で操作できる位置に第1の揺動台操作ノブ21が設けられ、左手で操作できる位置に第2の揺動台操作ノブ22が設けられている。   By the way, as described with reference to FIG. 10, in general, when the endoscope is operated with the left hand, when the gripping portion of the operation unit 3 is gripped, the first oscillating table operation knob 21 is located at a position where the operation can be performed with the right hand. A second rocking table operating knob 22 is provided at a position where it can be operated with the left hand.

この第1の揺動台操作ノブ21と第2の揺動台操作ノブ22を操作して、第1の処置具揺動台10と第2の処置具揺動台11を介して、第1の処置具54と第2の処置具56を揺動させて、粘膜の切開処置を行う際に、第1の揺動台操作ノブ21により操作される第1の処置具揺動台10の第1の処置具54に切開用の処置具である高周波ナイフが用いられ、第2の揺動台操作ノブ22により操作される第2の処置具揺動台11の第2の処置具56に把持用の処置具である把持鉗子が用いられる。このために、粘膜の切開処置においては、高周波ナイフを揺動させるための第1の揺動台操作ノブ21の操作頻度が圧倒的に多くなる。   The first oscillating table operating knob 21 and the second oscillating table operating knob 22 are operated, and the first treatment instrument oscillating table 10 and the second treatment instrument oscillating table 11 are used to operate the first oscillating table operating knob 21 and the second oscillating table operating knob 22. When the treatment instrument 54 and the second treatment instrument 56 are oscillated to perform the incision treatment of the mucous membrane, the first treatment instrument oscillating base 10 of the first treatment instrument oscillating base 10 operated by the first oscillating base operating knob 21 is used. A high-frequency knife as a treatment tool for incision is used as the first treatment tool 54 and is gripped by the second treatment tool 56 of the second treatment tool swinging table 11 operated by the second swinging table operating knob 22. A grasping forceps, which is a treatment tool for use, is used. For this reason, in the mucosal incision treatment, the operation frequency of the first rocking base operation knob 21 for rocking the high-frequency knife is overwhelmingly increased.

一方、右手は、この第1の揺動台操作ノブ21の操作に加えて、挿入部3の体腔内への挿入進退及び捻り操作、及び第1の開口部17と第2の開口部18から第1の処置具挿通チャンネル15と第2の処置具挿通チャンネル16への第1の処置具54と第2の処置具56の挿入進退操作を同時に行う必要がある。   On the other hand, in addition to the operation of the first swinging base operation knob 21, the right hand moves the insertion portion 3 into and out of the body cavity and twists, and from the first opening 17 and the second opening 18. The first treatment instrument 54 and the second treatment instrument 56 need to be inserted / retracted simultaneously with respect to the first treatment instrument insertion channel 15 and the second treatment instrument insertion channel 16.

これに対して、左手は、比較的操作頻度の少ない第2の揺動台操作ノブ22の操作、送気送水制御ボタン46の操作、吸引制御ボン47の操作、画像記録ボタン48の操作、及び湾曲部操作ノブ49の操作等が行われる。このように、右手には、慎重な操作が要求されると共に、操作頻度の多い操作が強いられる。   On the other hand, the left hand operates the second swinging base operation knob 22 with relatively low operation frequency, the operation of the air / water supply control button 46, the operation of the suction control bon 47, the operation of the image recording button 48, and The bending portion operation knob 49 is operated. As described above, the right hand is required to be carefully operated and to be frequently operated.

そこで、図16を用い説明した先端部5”の第1の処置具揺動台10’を操作する1本の操作ワイヤ32c’は、図18に示す第1の揺動台操作ノブ19’が設けられた揺動台操作部19’に接続し、第2の処置具揺動台11’を操作する2本の操作ワイヤ32a’,32b’は、第2の揺動台操作ノブ22’が設けられた揺動台操作部に接続する。   Accordingly, the first operating wire 32c ′ for operating the first treatment instrument swinging table 10 ′ at the distal end portion 5 ″ described with reference to FIG. 16 has the first swinging table operating knob 19 ′ shown in FIG. The two operation wires 32a ′ and 32b ′ connected to the provided oscillating table operating unit 19 ′ and operating the second treatment instrument oscillating table 11 ′ are provided by the second oscillating table operating knob 22 ′. Connect to the provided rocking table operation unit.

これにより、内視鏡の各種操作頻度の多い右手により、第1の処置具揺動台10’による第1の処置具54’の把持鉗子による粘膜持ち上げ操作を行い、左手により第2の処置具揺動台11による第2の処置具56’の高周波ナイフの揺動操作を行う。これにより、右手は、内視鏡の挿入部2の体腔内への挿入進退と捻り操作、及び処置具の挿入進退の操作に専念でき、高周波ナイフの揺動操作を左手で行うことで、スムースな内視鏡によるに切開作業が行える。   Thereby, the mucosal lifting operation with the grasping forceps of the first treatment instrument 54 ′ by the first treatment instrument swinging base 10 ′ is performed by the right hand having a high frequency of various operations of the endoscope, and the second treatment instrument is performed by the left hand. The swinging operation of the high-frequency knife of the second treatment instrument 56 ′ by the swinging table 11 is performed. As a result, the right hand can concentrate on the insertion / retraction and twisting operation of the insertion portion 2 of the endoscope into the body cavity and the operation of inserting / retreating the treatment tool, and the high-frequency knife swinging operation can be performed smoothly with the left hand. Incision can be done with a simple endoscope.

[付記]
以上詳述した本発明の実施形態によれば、以下のごとき構成を得ることができる。
[Appendix]
According to the embodiment of the present invention described in detail above, the following configuration can be obtained.

(付記1) 内視鏡挿入部の先端に設けられた観察手段と、
前記内視鏡挿入部に設けられた処置具挿通チャンネルと、
この処置具挿通チャンネルに挿入されて前記内視鏡挿入部の先端部から導出された処置具を前記観察手段によって得られた内視鏡画像の画面の略左右方向、または略上下方向に揺動させる処置具揺動台と、
前記内視鏡挿入部の先端部に設けられ、前記処置具揺動台により揺動される処置具の揺動領域内に流体を供給する流体送出通路と、
を具備することを特徴とした内視鏡。
(Appendix 1) Observation means provided at the distal end of the endoscope insertion portion;
A treatment instrument insertion channel provided in the endoscope insertion portion;
The treatment instrument inserted into the treatment instrument insertion channel and led out from the distal end portion of the endoscope insertion portion is swung in a substantially horizontal direction or a substantially vertical direction of the screen of the endoscopic image obtained by the observation means. A treatment instrument swinging base,
A fluid delivery passage that is provided at a distal end portion of the endoscope insertion portion and supplies a fluid into a swing region of the treatment instrument that is swung by the treatment tool swinging table;
An endoscope characterized by comprising:

(付記2) 前記流体送出通路の流体の送出方向は、前記処置具揺動台により揺動される処置具の手元側から先端側により形成される揺動領域を貫通するように設定されていることを特徴した付記1記載の内視鏡。   (Supplementary Note 2) The fluid delivery direction of the fluid delivery passage is set so as to pass through a swinging region formed from the proximal side to the distal end side of the treatment tool swung by the treatment tool swinging table. The endoscope according to appendix 1, characterized by the above.

(付記3) 内視鏡挿入部の先端に設けられた観察手段と、
前記内視鏡挿入部に設けられた第1の処置具挿通用チャンネルを介して導出される処置具を第1の方向に揺動する第1の処置具揺動台と、
前記内視鏡挿入部に設けられた第2の処置具挿通用チャンネルを介して導出される処置具を第2の方向に揺動する第2の処置具揺動台と、
前記第1の処置具揺動台による処置具の揺動方向の延長線と、前記第2の処置具揺動台による処置具の揺動方向の延長線とが交叉する領域に流体を供給するように配置された流体送出通路と、
を備えたことを特徴とする内視鏡。
(Supplementary Note 3) Observation means provided at the distal end of the endoscope insertion portion;
A first treatment instrument oscillating base for oscillating a treatment instrument led out through a first treatment instrument insertion channel provided in the endoscope insertion portion in a first direction;
A second treatment instrument oscillating base for oscillating a treatment instrument derived through a second treatment instrument insertion channel provided in the endoscope insertion portion in a second direction;
Fluid is supplied to a region where an extension line in the swing direction of the treatment instrument by the first treatment instrument swing base and an extension line in the swing direction of the treatment tool by the second treatment tool swing base intersect. Fluid delivery passages arranged in such a way that
An endoscope characterized by comprising:

(付記4) 前記流体送出通路の流体の送出方向は、前記観察手段の観察光学系の視野を左右に等分する中心線に方向に設定されていることを特徴した付記1記載の内視鏡。   (Supplementary note 4) The endoscope according to supplementary note 1, wherein a fluid delivery direction of the fluid delivery passage is set to a center line that equally divides the visual field of the observation optical system of the observation unit into left and right. .

(付記5) 前記処置具揺動台は、処置具を略左右方向に揺動さらせる第1の処置具揺動台と、処置具を略上下方向に揺動させる第2の処置具揺動台とからなり、第1の処置具揺動台と第2の処置具揺動台により揺動されるそれぞれの処置具の揺動範囲が干渉しないように設定されていることを特徴とした付記1記載の内視鏡。   (Supplementary Note 5) The treatment instrument swinging table includes a first treatment tool swinging base that swings the treatment tool in a substantially horizontal direction and a second treatment tool swinging that swings the treatment tool in a substantially vertical direction. Note that the oscillating range of each treatment instrument that is oscillated by the first treatment instrument oscillating table and the second treatment instrument oscillating table is set so as not to interfere with each other. 1. The endoscope according to 1.

(付記6) 前記第1と第2の処置具揺動台は、前記内視鏡挿入部の先端部に設けられたそれぞれの収納室に配置されると共に、それぞれ収納室が連結されていることを特徴とした付記5記載の内視鏡。   (Additional remark 6) The said 1st and 2nd treatment instrument rocking | fluctuation base is arrange | positioned in each storage chamber provided in the front-end | tip part of the said endoscope insertion part, and each storage chamber is connected. The endoscope according to appendix 5, characterized by:

(付記7) 前記流体送出通路から流体を送出した際に、その流体が前記処置具の収納室に循環されるように、前記内視鏡挿入の先端部の先端面に洗滌用カバーを装着することを特徴とした付記1乃至6のいずれかに記載の内視鏡。   (Appendix 7) A washing cover is attached to the distal end surface of the distal end portion of the endoscope insertion so that when the fluid is delivered from the fluid delivery passage, the fluid is circulated to the storage chamber of the treatment instrument. The endoscope according to any one of appendices 1 to 6, characterized in that:

(付記8) 内視鏡挿入部の先端部に、観察窓からなる観察光学系と、前記観察光学系の観察方向に送水可能な前方送水口と、挿入部内に設けられた処置具挿通チャンネルを介して先端部から導出した処置具を前記観察光学系で撮らえた内視鏡画像の画面略左右方向または略上下方向に揺動させる処置具揺動台と、からなる内視鏡において、
前記前方送水口からの送水は、前記処置具揺動台で揺動される処置具の揺動領域内を通ることを特徴とする内視鏡。
(Appendix 8) At the distal end portion of the endoscope insertion portion, an observation optical system including an observation window, a front water supply port capable of supplying water in the observation direction of the observation optical system, and a treatment instrument insertion channel provided in the insertion portion An endoscope comprising: a treatment instrument swinging table that swings the treatment instrument derived from the distal end portion in a substantially horizontal direction or a substantially vertical direction of a screen of an endoscopic image captured by the observation optical system;
The endoscope is characterized in that water supply from the front water supply port passes through a swinging region of a treatment instrument swung by the treatment instrument swinging table.

(付記9) 先端面からの処置具の突出量が15〜25mmの時、前記前方送水口からの送水は、前記処置具揺動台で揺動される処置具の揺動領域内を手元側から先端側に向けて略平行に通ることを特徴とする付記8記載の内視鏡。   (Supplementary Note 9) When the amount of protrusion of the treatment instrument from the distal end surface is 15 to 25 mm, the water supply from the front water supply port is within the swing region of the treatment instrument swung by the treatment instrument swinging base. The endoscope according to appendix 8, wherein the endoscope passes substantially parallel to the distal end side.

(付記10) 内視鏡挿入部の先端部に、観察窓からなる観察光学系と、前記観察光学系の観察方向に送水可能な前方送水口と、挿入部内に設けられた処置具挿通チャンネルを介して先端部から導出した処置具を前記観察光学系で撮らえた内視鏡画像の画面略左右方向または略上下方向に揺動させる処置具揺動台と、からなる内視鏡において、
洗滌用キャップ部材を内視鏡先端部に着脱自在にするとともに、装着状態では前記前方送水口の開口部は前記処置具揺動台の収納部に連通していることを特徴とする内視鏡。
(Additional remark 10) At the front-end | tip part of an endoscope insertion part, the observation optical system which consists of an observation window, the front water supply port which can send water in the observation direction of the said observation optical system, and the treatment tool penetration channel provided in the insertion part An endoscope comprising: a treatment instrument swinging table that swings the treatment instrument derived from the distal end portion in a substantially horizontal direction or a substantially vertical direction of a screen of an endoscopic image captured by the observation optical system;
An endoscope characterized in that a washing cap member is detachably attached to the distal end portion of the endoscope, and the opening portion of the front water supply port communicates with a storage portion of the treatment instrument swinging base in a mounted state. .

(付記11) 内視鏡挿入部の先端部に、観察窓からなる観察光学系と、挿入部内に設けられた処置具挿通チャンネルを介して先端部から導出した処置具を前記観察光学系で撮らえた内視鏡画像の画面略左右方向に揺動させる処置具揺動台と、前記処置具揺動台を手元側で遠隔操作する揺動台操作ノブと、操作部把持部と、からなる内視鏡において、
前記操作部把持部を左手で把持した状態で、前記揺動台操作ノブは左手指の届く位置に設けたことを特徴とする内視鏡。
(Supplementary Note 11) An observation optical system including an observation window and a treatment instrument derived from the distal end portion through a treatment instrument insertion channel provided in the insertion section are taken by the observation optical system at the distal end portion of the endoscope insertion section. A treatment instrument swinging table that swings the screen of the obtained endoscopic image substantially in the left-right direction; In the endoscope,
The endoscope according to claim 1, wherein the swinging base operation knob is provided at a position where the left finger can reach in a state where the operation portion gripping portion is gripped with a left hand.

(付記12) 内視鏡挿入部の先端部に、観察窓からなる観察光学系と、挿入部内に設けられた第1の処置具挿通チャンネルを介して先端部から導出した第1処置具を前記観察光学系で撮らえた内視鏡画像の画面略左右方向に揺動させる第1の処置具揺動台と、挿入部内に設けられた第2の処置具挿通チャンネルを介して先端部から導出した第2処置具を前記観察光学系で撮らえた内視鏡画像の画面略上下方向に揺動させる第2の処置具揺動台と、前記第1の処置具揺動台を手元側で遠隔操作する第1の揺動台操作ノブと、前記第2の処置具揺動台を手元側で遠隔操作する第2の揺動台操作ノブと、操作部把持部と、からなる内視鏡において、
前記操作部把持部を左手で把持した状態で、少なくとも第1の揺動台操作ノブは左手指の届く位置に設けたことを特徴とする内視鏡。
(Supplementary Note 12) The first treatment instrument led out from the distal end portion through the observation optical system including the observation window and the first treatment instrument insertion channel provided in the insertion section is provided at the distal end portion of the endoscope insertion portion. The endoscope image taken by the observation optical system is derived from the distal end portion through a first treatment instrument swinging table that swings in a substantially left-right direction of the screen and a second treatment instrument insertion channel provided in the insertion section. A second treatment instrument oscillating base for oscillating the second treatment instrument in the substantially vertical direction of the endoscopic image captured by the observation optical system, and the first treatment instrument oscillating base being remotely operated on the hand side In an endoscope comprising: a first swinging table operating knob, a second swinging table operating knob for remotely operating the second treatment instrument swinging table on the hand side, and an operation unit gripping part;
An endoscope, wherein at least the first swinging base operation knob is provided at a position where the left finger can reach in a state where the operation portion gripping portion is gripped by the left hand.

本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部を示す平面図。The top view which shows the front-end | tip part of the endoscope insertion part which is 1st Embodiment of the endoscope of this invention. 本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部を示す斜視図。The perspective view which shows the front-end | tip part of the endoscope insertion part which is 1st Embodiment of the endoscope of this invention. 本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部の電気絶縁性カバーの正面を除いた先端構成部を示す平面図。The top view which shows the front-end | tip structure part except the front of the electrically insulating cover of the front-end | tip part of the endoscope insertion part which is 1st Embodiment of the endoscope of this invention. 本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部に設ける第1の処置具揺動台を示す斜視図。The perspective view which shows the 1st treatment instrument rocking | fluctuation stand provided in the front-end | tip part of the endoscope insertion part which is 1st Embodiment of the endoscope of this invention. 本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部を示し、図1のB−B’切断線から切断した断面図。Sectional drawing which shows the front-end | tip part of the endoscope insertion part which is 1st Embodiment of the endoscope of this invention, and was cut | disconnected from the B-B 'cutting line of FIG. 本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部を示し、図1のA−A’切断線から切断した断面図。Sectional drawing which shows the front-end | tip part of the endoscope insertion part which is 1st Embodiment of the endoscope of this invention, and was cut | disconnected from the A-A 'cutting line of FIG. 本発明の内視鏡の第1の実施形態である内視鏡による内視鏡画像における処置具の揺動状態を説明する説明図。Explanatory drawing explaining the rocking | fluctuation state of the treatment tool in the endoscopic image by the endoscope which is 1st Embodiment of the endoscope of this invention. 本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部から突出した処置具による粘膜切開操作を説明する説明図。Explanatory drawing explaining mucosal incision operation by the treatment tool protruded from the front-end | tip part of the endoscope insertion part which is 1st Embodiment of the endoscope of this invention. 本発明に係る内視鏡の全体構成を示す斜視図。The perspective view which shows the whole structure of the endoscope which concerns on this invention. 本発明に係る内視鏡の操作状態を説明する説明図。Explanatory drawing explaining the operation state of the endoscope which concerns on this invention. 本発明の内視鏡の第1の実施形態である内視鏡挿入部の先端部の洗滌状態を示す断面図。Sectional drawing which shows the washing | cleaning state of the front-end | tip part of the endoscope insertion part which is 1st Embodiment of the endoscope of this invention. 本発明の第2の実施形態の内視鏡の先端部の構成を示す平面図。The top view which shows the structure of the front-end | tip part of the endoscope of the 2nd Embodiment of this invention. 本発明の第2の実施形態の内視鏡の先端部の構成を示し、図12に示す切断線U−Uから切断した断面図。Sectional drawing which showed the structure of the front-end | tip part of the endoscope of the 2nd Embodiment of this invention, and was cut | disconnected from the cutting line UU shown in FIG. 本発明の第2の実施形態の内視鏡の先端部の構成を示し、図12に示す切断線Z−Zから切断した断面図。Sectional drawing which showed the structure of the front-end | tip part of the endoscope of the 2nd Embodiment of this invention, and cut | disconnected from the cutting line ZZ shown in FIG. 本発明の第2の実施形態の内視鏡の先端部の洗滌作用を説明する断面図。Sectional drawing explaining the washing | cleaning effect | action of the front-end | tip part of the endoscope of the 2nd Embodiment of this invention. 本発明の第3の実施形態の内視鏡の先端部の構成を示す平面図。The top view which shows the structure of the front-end | tip part of the endoscope of the 3rd Embodiment of this invention. 本発明の第3の実施形態の内視鏡の内視鏡画像における処置具の揺動動作を説明する説明図。Explanatory drawing explaining rocking | fluctuation operation | movement of the treatment tool in the endoscopic image of the endoscope of the 3rd Embodiment of this invention. 本発明の第3の実施形態の内視鏡の操作を説明する説明図。Explanatory drawing explaining operation of the endoscope of the 3rd Embodiment of this invention.

符号の説明Explanation of symbols

1 内視鏡
2 挿入部
3 操作部
5 先端部
6 観察手段
7 照明窓
8 送気送水ノズル
9 流体送出通路
10 第1の処置具揺動台
11 第2の処置具揺動台
15 第1の処置具挿通チャンネル
16 第2の処置具挿通チャンネル
28 第1収納室
29 第2収納室
32 操作ワイヤ
40 第1処置具挿通部
代理人 弁理士 伊藤 進
DESCRIPTION OF SYMBOLS 1 Endoscope 2 Insertion part 3 Operation part 5 Tip part 6 Observation means 7 Illumination window 8 Air / water supply nozzle 9 Fluid delivery path 10 1st treatment instrument rocking | fluctuation base 11 2nd treatment tool rocking | fluctuation base 15 1st Treatment instrument insertion channel 16 Second treatment instrument insertion channel 28 First storage chamber 29 Second storage chamber 32 Operation wire 40 First treatment instrument insertion section Agent Patent attorney Susumu Ito

Claims (2)

内視鏡挿入部の先端に設けられた観察手段と、
前記内視鏡挿入部に設けられた処置具挿通チャンネルと、
この処置具挿通チャンネルに挿入されて前記内視鏡挿入部の先端部から導出された処置具を前記観察手段によって得られた内視鏡画像の画面の略左右方向、または略上下方向に揺動させる処置具揺動台と、
前記内視鏡挿入部の先端部にて開口し、前記処置具揺動台により揺動される前記処置具の手元側から先端側により形成される揺動領域内を貫通する方向に向かって、前記処置具揺動台により揺動された該処置具を洗浄可能に揺動領域内に流体を送出する流体送出通路と、
を備えたことを特徴とする内視鏡。
Observation means provided at the tip of the endoscope insertion portion;
A treatment instrument insertion channel provided in the endoscope insertion portion;
The treatment instrument inserted into the treatment instrument insertion channel and led out from the distal end portion of the endoscope insertion portion is swung in a substantially horizontal direction or a substantially vertical direction of the screen of the endoscopic image obtained by the observation means. A treatment instrument swinging base,
Opens in the endoscope insertion portion of the tip, in the direction passing through the swing area formed by the distal end side from the proximal side of the treatment instrument to be swung by the treatment instrument swing table, A fluid delivery passage for delivering fluid into the swinging region so that the treatment tool swung by the treatment tool swinging base can be cleaned ;
An endoscope characterized by comprising:
内視鏡挿入部の先端に設けられた観察手段と、
前記内視鏡挿入部に設けられた第1の処置具挿通用チャンネルを介して導出される第1の処置具を第1の方向に揺動する第1の処置具揺動台と、
前記内視鏡挿入部に設けられた第2の処置具挿通用チャンネルを介して導出される第2の処置具を第2の方向に揺動する第2の処置具揺動台と、
前記内視鏡挿入部の先端部にて開口し、前記第1の処置具揺動台による前記第1の処置具の揺動方向の延長線と、前記第2の処置具揺動台による前記第2の処置具の揺動方向の延長線とが交叉する領域に向けて、前記第1、及び第2の処置具揺動台により揺動される、それぞれの前記第1、及び第2の処置具を洗浄可能に流体を送出するように配置された流体送出通路と、
を備えたことを特徴とする内視鏡。
Observation means provided at the tip of the endoscope insertion portion;
A first treatment instrument swing table that swings the first treatment tool derived via the first treatment instrument insertion channel provided in the endoscope insertion portion in a first direction,
A second treatment instrument swing table to swing the second treatment tool derived through the second treatment tool insertion channel provided in the endoscope insertion portion in a second direction,
It opens in the endoscope insertion portion of the tip portion, and the extension line of the swinging direction of the first treatment instrument swing table by the first treatment tool, wherein by the second treatment instrument controlling base toward region where the extension line of the swinging direction of the second treatment tool is crossing, the first, and is swung by the second treatment instrument controlling base, each of said first and second A fluid delivery passage arranged to deliver fluid so that the treatment instrument can be cleaned ;
An endoscope characterized by comprising:
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PCT/JP2005/013571 WO2006009280A1 (en) 2004-07-23 2005-07-25 Endoscope
EP05761727A EP1772095B1 (en) 2004-07-23 2005-07-25 Endoscope
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JP5006591B2 (en) * 2006-07-26 2012-08-22 Hoya株式会社 Ultrasound endoscope
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JP5153476B2 (en) * 2008-06-24 2013-02-27 オリンパスメディカルシステムズ株式会社 Endoscope device
JP5501603B2 (en) * 2008-11-14 2014-05-28 オリンパスメディカルシステムズ株式会社 Endoscope
JP5698640B2 (en) * 2011-10-14 2015-04-08 オリンパスメディカルシステムズ株式会社 Endoscope
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