JP2009028222A - Reinforcement structure for treatment tool outlet opening of strabismus-type ultrasonic endoscope - Google Patents

Reinforcement structure for treatment tool outlet opening of strabismus-type ultrasonic endoscope Download PDF

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JP2009028222A
JP2009028222A JP2007194523A JP2007194523A JP2009028222A JP 2009028222 A JP2009028222 A JP 2009028222A JP 2007194523 A JP2007194523 A JP 2007194523A JP 2007194523 A JP2007194523 A JP 2007194523A JP 2009028222 A JP2009028222 A JP 2009028222A
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treatment instrument
outlet opening
ultrasonic endoscope
resin
hard member
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JP4996382B2 (en
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Tetsuya Tarumoto
哲也 樽本
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Hoya Corp
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Hoya Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcement structure for a treatment tool outlet opening of a strabismus-type ultrasonic endoscope which prevents the front end of the outlet opening from being scraped by a treatment tool when projecting the treatment tool to the outside from the outlet opening formed on a tilted surface of a resin part. <P>SOLUTION: The resin part 25 has the tilted surface 26. The outlet opening 30 of a treatment tool insertion channel 27 that penetrates through the resin part is formed on the tilted surface. A fitting concave part 31 is formed on the front end and at the periphery of the outlet opening, and a metal hard member 32 is fitted and fixed to the fitting concave part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、斜視型超音波内視鏡に関し、特に斜視型超音波内視鏡の傾斜面に形成した処置具挿通路の出口開口の補強構造に関する。   The present invention relates to a perspective type ultrasonic endoscope, and more particularly to a reinforcing structure of an outlet opening of a treatment instrument insertion passage formed on an inclined surface of a perspective type ultrasonic endoscope.

斜視型の超音波内視鏡の従来例としては、例えば図７に記載したものがある。
この超音波内視鏡０１は、挿入部０２の先端部にコンベックス型の超音波プローブ０３を備えており、超音波プローブ０３の直後は合成樹脂からなる樹脂部０４となっている。樹脂部０４の先端部には挿入部０２（樹脂部０４）の軸線に対して傾斜する傾斜面０５が形成してあり、この傾斜面０５に図示を省略した対物レンズや照明用レンズを設けている。
さらに、樹脂部０４の内部には樹脂部０４を貫通する処置具挿通路０６が形成してあり、処置具挿通路０６の出口開口０７は傾斜面０５において開口している。さらに、この処置具挿通路０６には挿入部０２の内部空間に配設され、その基端部が挿入部０２の基端部側に設けた処置具挿入用開口（鉗子口）に接続する可撓性を有する処置具挿通用チューブ０８の先端部が嵌合固定してある。
従って、処置具挿入用開口から処置具０９を処置具挿通用チューブ０８に挿入すると、処置具０９は傾斜面０５に形成した出口開口０７から傾斜面０５の前方に突出する。
特開２００４−２０９０４４号公報 As a conventional example of a perspective-type ultrasonic endoscope, there is one shown in FIG.
The ultrasonic endoscope 01 includes a convex ultrasonic probe 03 at the distal end of the insertion portion 02, and immediately after the ultrasonic probe 03 is a resin portion 04 made of a synthetic resin. An inclined surface 05 that is inclined with respect to the axis of the insertion portion 02 (resin portion 04) is formed at the distal end portion of the resin portion 04, and an objective lens and an illumination lens (not shown) are provided on the inclined surface 05. Yes.
Further, a treatment instrument insertion path 06 that penetrates the resin section 04 is formed inside the resin section 04, and an outlet opening 07 of the treatment instrument insertion path 06 is opened at the inclined surface 05. Further, the treatment instrument insertion path 06 is disposed in the internal space of the insertion section 02, and its proximal end portion can be connected to a treatment instrument insertion opening (forceps opening) provided on the proximal end side of the insertion section 02. The distal end portion of the treatment instrument insertion tube 08 having flexibility is fitted and fixed.
Accordingly, when the treatment instrument 09 is inserted into the treatment instrument insertion tube 08 from the treatment instrument insertion opening, the treatment instrument 09 projects forward of the inclined surface 05 from the outlet opening 07 formed in the inclined surface 05.
JP 2004-209044 A

図７に示すように、処置具挿通路０６の先端部は樹脂部０４（挿入部０２）の軸線に対して傾斜しているので、処置具０９を出口開口０７から傾斜面０５の前方に突出させる際に処置具０９の周面が出口開口０７の前端部に擦れ易い。そのため、処置具０９の周面が硬質材料（例えば、金属、ＰＥＥＫ材など）により成形されている場合には、処置具０９によって出口開口０７の前端部が削られてしまうおそれがある。   As shown in FIG. 7, since the distal end portion of the treatment instrument insertion path 06 is inclined with respect to the axis of the resin portion 04 (insertion portion 02), the treatment instrument 09 projects from the outlet opening 07 to the front of the inclined surface 05. When this is done, the peripheral surface of the treatment instrument 09 tends to rub against the front end of the outlet opening 07. Therefore, when the peripheral surface of the treatment instrument 09 is formed of a hard material (for example, metal, PEEK material, etc.), the front end portion of the outlet opening 07 may be scraped by the treatment instrument 09.

本発明は、処置具を樹脂部の傾斜面に形成した出口開口から外部に突出させる際に処置具によって出口開口の前端部が削られることのない斜視型超音波内視鏡における処置具用出口開口の補強構造を提供することを目的とする。   The present invention relates to a treatment tool outlet in a perspective ultrasonic endoscope in which the front end portion of the outlet opening is not scraped by the treatment tool when the treatment tool is projected outside from the outlet opening formed on the inclined surface of the resin portion. It aims at providing the reinforcement structure of an opening.

本発明の斜視型超音波内視鏡における処置具用出口開口の補強構造は、挿入部に、該挿入部の先端部に形成した超音波プローブの直後に位置する樹脂製の樹脂部を形成し、該樹脂部の外面に形成した該樹脂部の軸線に対して傾斜する傾斜面に対物レンズを設けた斜視型の超音波内視鏡において、上記樹脂部の内部を貫通するように形成した処置具挿通路の出口開口を上記傾斜面に形成し、該出口開口の周縁部の前端部に嵌合凹部を形成し、該嵌合凹部に金属製の硬質部材を嵌合固定したことを特徴としている。   The reinforcing structure of the outlet opening for the treatment instrument in the perspective type ultrasonic endoscope of the present invention is formed by forming a resin-made resin portion located immediately after the ultrasonic probe formed at the distal end portion of the insertion portion at the insertion portion. In a perspective type ultrasonic endoscope in which an objective lens is provided on an inclined surface inclined with respect to the axis of the resin portion formed on the outer surface of the resin portion, a treatment formed so as to penetrate the inside of the resin portion The outlet opening of the instrument insertion passage is formed on the inclined surface, a fitting recess is formed at the front end of the peripheral edge of the outlet opening, and a metal hard member is fitted and fixed to the fitting recess. Yes.

上記処置具挿通路内に、処置具が挿通する処置具挿通用チューブの先端部を配設し、該処置具挿通用チューブの先端部で上記硬質部材の表面を押さえるのが好ましい。   It is preferable that a distal end portion of a treatment instrument insertion tube through which the treatment instrument is inserted is disposed in the treatment instrument insertion passage, and the surface of the hard member is pressed by the distal end portion of the treatment instrument insertion tube.

上記硬質部材の表面の後端部に係合凹部を形成し、上記処置具挿通用チューブの先端部の一部を上記係合凹部に係合させるのが好ましい。   It is preferable that an engagement recess is formed at the rear end portion of the surface of the hard member, and a part of the distal end portion of the treatment instrument insertion tube is engaged with the engagement recess.

本発明では処置具挿通路の出口開口の周縁部の前端部を金属製の硬質部材によって構成している。そのため、処置具を処置具挿通路の出口開口から傾斜面の前方に突出させる際に処置具の周面が出口開口の周縁部の前端部に接触しても、出口開口の周縁部の前端部が処置具によって削られることはない。   In this invention, the front-end part of the peripheral part of the exit opening of a treatment tool insertion path is comprised with the metal hard member. Therefore, even when the peripheral surface of the treatment instrument contacts the front end of the peripheral edge of the outlet opening when the treatment instrument protrudes from the outlet opening of the treatment instrument insertion path to the front of the inclined surface, the front end of the peripheral edge of the outlet opening Is not scraped by the treatment tool.

請求項２のように構成すれば、処置具挿通用チューブの先端部が、硬質部材を嵌合凹部側に押圧するので、硬質部材と嵌合凹部の固定状態が強固になる。   If comprised like Claim 2, since the front-end | tip part of the treatment tool penetration tube presses a hard member to a fitting recessed part side, the fixed state of a hard member and a fitting recessed part will become strong.

請求項３のように構成すれば、処置具挿通用チューブの先端部が硬質部材をより確実に嵌合凹部側に押圧するので、硬質部材と嵌合凹部の固定状態がより強固になる。   If comprised like Claim 3, since the front-end | tip part of the tube for treatment tool penetration will press a hard member more reliably to the fitting recessed part side, the fixed state of a hard member and a fitting recessed part will become stronger.

以下、本発明の一実施形態を図１から図６を参照しながら説明する。なお、以下の説明中の前後方向は、超音波内視鏡１０の挿入部１３の先端部側を「前方」、挿入部１３の基端部側を「後方」と定義している。
図１に示す斜視型の超音波内視鏡１０は、操作部１１と、操作部１１から前方に延びるとともに周面の大部分を外皮材１２で覆った挿入部１３と、共に操作部１１から挿入部１３と反対側に延びるライトガイド用チューブ１４及び超音波画像伝送用チューブ１５と、を備え、ライトガイド用チューブ１４と超音波画像伝送用チューブ１５の端部には光源用コネクタ１６と超音波画像用コネクタ１７がそれぞれ設けてある。
挿入部１３の先端部近傍をなす湾曲部１９は、操作部１１に設けた湾曲操作レバー２０の回転操作に応じて上下及び左右方向に湾曲する。
図１及び図２に示すように、挿入部１３の先端部にはコンベックス型の超音波プローブ２２が設けてある。超音波プローブ２２の前後２箇所には超音波プローブ２２に装着するバルーン（図示略）を超音波プローブ２２を固定する弾性リング（図示略）を嵌合するための環状溝２３、環状溝２４が凹設してある。
超音波画像用コネクタ１７に接続された超音波診断装置（図示略）に設けられた超音波スイッチ（図示略）を押すと、超音波プローブ２２の表面から被検部に向けて超音波が発信され、被検部によって反射された超音波を超音波プローブ２２が受信する。さらに、挿入部１３（樹脂部２５）、操作部１１及び超音波画像伝送用チューブ１５の内部には、前端が超音波プローブ２２に接続し後端が超音波画像用コネクタ１７に接続する超音波画像伝送用ケーブルＵＣが設けてある（図２参照）。従って、超音波画像用コネクタ１７を超音波診断装置に接続した状態で超音波プローブ２２から被検部に向けて超音波を発信すると、超音波プローブ２２で得られた超音波画像が超音波診断装置（図示略）により電気的に処理された上でＣＲＴモニタに表示される。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following description, the front-rear direction defines the distal end side of the insertion portion 13 of the ultrasonic endoscope 10 as “front” and the proximal end side of the insertion portion 13 as “rearward”.
A perspective-type ultrasonic endoscope 10 shown in FIG. 1 includes an operation unit 11, an insertion unit 13 that extends forward from the operation unit 11 and covers most of the peripheral surface with an outer skin material 12, and the operation unit 11. A light guide tube 14 and an ultrasonic image transmission tube 15 extending on the opposite side of the insertion portion 13, and the light guide tube 14 and the ultrasonic image transmission tube 15 are connected to the light source connector 16 and super A sonic image connector 17 is provided.
The bending portion 19 in the vicinity of the distal end portion of the insertion portion 13 is bent in the vertical and horizontal directions in accordance with the rotation operation of the bending operation lever 20 provided in the operation portion 11.
As shown in FIGS. 1 and 2, a convex ultrasonic probe 22 is provided at the distal end portion of the insertion portion 13. An annular groove 23 and an annular groove 24 for fitting a balloon (not shown) attached to the ultrasonic probe 22 to an elastic ring (not shown) for fixing the ultrasonic probe 22 are provided at two positions before and after the ultrasonic probe 22. It is recessed.
When an ultrasonic switch (not shown) provided in an ultrasonic diagnostic apparatus (not shown) connected to the ultrasonic image connector 17 is pressed, an ultrasonic wave is transmitted from the surface of the ultrasonic probe 22 toward the test portion. Then, the ultrasonic probe 22 receives the ultrasonic wave reflected by the test part. Further, inside the insertion portion 13 (resin portion 25), the operation portion 11 and the ultrasonic image transmission tube 15, an ultrasonic wave having a front end connected to the ultrasonic probe 22 and a rear end connected to the ultrasonic image connector 17 is provided. An image transmission cable UC is provided (see FIG. 2). Therefore, when an ultrasonic wave is transmitted from the ultrasonic probe 22 to the test portion with the ultrasonic image connector 17 connected to the ultrasonic diagnostic apparatus, the ultrasonic image obtained by the ultrasonic probe 22 is ultrasonically diagnosed. After being electrically processed by a device (not shown), it is displayed on a CRT monitor.

挿入部１３における超音波プローブ２２の直後をなす部分は、合成樹脂によって形成された弾性変形不能な樹脂部２５により構成されている。図示するように、樹脂部２５の前端部近傍には樹脂部２５（及び挿入部１３）の軸線に対して傾斜する傾斜面２６が形成してある。
図３に示すように、傾斜面２６には照明レンズＬ１と対物レンズＬ２が設けてある。照明レンズＬ１には、挿入部１３（樹脂部２５）、操作部１１、ライトガイド用チューブ１４及び光源用コネクタ１６内に配設されたライトガイドファイバ（図示略）の前端が接続しているので、光源用コネクタ１６を光源装置ＬＳに接続すると、光源装置ＬＳで発生した光がライトガイドファイバを通って照明レンズＬ１から外部に照射される。また、対物レンズＬ２には、挿入部１３（樹脂部２５）、及び操作部１１内に配設されたイメージガイドファイバ（図示略）の前端が接続しており、イメージガイドファイバの後端は操作部１１の後端部に設けた接眼部１８に接続しているので、術者は対物レンズＬ２を介して得られた画像を接眼部１８から観察できる。 The portion immediately after the ultrasonic probe 22 in the insertion portion 13 is configured by a resin portion 25 that is made of synthetic resin and cannot be elastically deformed. As shown in the figure, an inclined surface 26 that is inclined with respect to the axis of the resin portion 25 (and the insertion portion 13) is formed in the vicinity of the front end portion of the resin portion 25.
As shown in FIG. 3, the inclined surface 26 is provided with an illumination lens L1 and an objective lens L2. Since the front end of a light guide fiber (not shown) disposed in the insertion portion 13 (resin portion 25), the operation portion 11, the light guide tube 14, and the light source connector 16 is connected to the illumination lens L1. When the light source connector 16 is connected to the light source device LS, the light generated by the light source device LS is irradiated from the illumination lens L1 to the outside through the light guide fiber. Further, the insertion portion 13 (resin portion 25) and the front end of an image guide fiber (not shown) disposed in the operation portion 11 are connected to the objective lens L2, and the rear end of the image guide fiber is operated. Since it is connected to the eyepiece 18 provided at the rear end of the part 11, the operator can observe the image obtained through the objective lens L2 from the eyepiece 18.

図２及び図４に示すように、樹脂部２５内には樹脂部２５を貫通すると共に断面形状が円形をなす処置具挿通路２７が形成してあり、処置具挿通路２７の前部は樹脂部２５（挿入部１３）の軸線に対して傾斜している。処置具挿通路２７の前端部は処置具挿通路２７のその他の部分に比べて径が小さい前端小径部２８となっており、処置具挿通路２７における前端小径部２８の直後に位置する部分は後述する処置具挿通用チューブ３５の先端部を固定するためのチューブ固定部２９となっている。さらに、前端小径部２８の前端は傾斜面２６において開口する出口開口３０となっており、出口開口３０の周縁部（前端小径部２８の周面）の前端部には嵌合凹部３１が凹設してある。
この嵌合凹部３１には嵌合凹部３１と同形状の硬質部材３２が嵌合している。硬質部材３２は樹脂部２５より硬い金属であるステンレスからなるものであり、硬質部材３２と嵌合凹部３１の対向面は接着剤により互いに接着されている。図５及び図６に示すように、硬質部材３２はステンレス製の円柱を加工したものである。具体的には、その断面形状が前端小径部２８と同径（該円柱より大径）の円弧形状をなす切削具（図示略）を図６の矢印Ａ方向に直線的に移動させて該円柱の一部を切除し、さらに、その一方の端部に断面形状がチューブ固定部２９と同径（該円柱より大径）の円弧形状をなす係合凹部３３を凹設したものである。このような形状の硬質部材３２を嵌合凹部３１に嵌合すると、図２から図４に示すように係合凹部３３の表面がチューブ固定部２９と連続し、かつ硬質部材３２（係合凹部３３を除く部分）の表面が前端小径部２８と連続する。
図２及び図４に示すように、挿入部１３の内部には可撓性を有する処置具挿通用チューブ３５が挿入してあり、処置具挿通用チューブ３５の前端側は処置具挿通路２７内に位置している。図４に示すように、処置具挿通用チューブ３５の前端部はチューブ固定部２９に嵌合し、さらにその先端の一部（図２及び図４では下端部）が硬質部材３２の係合凹部３３に嵌合しているので、処置具挿通用チューブ３５の前端部によって硬質部材３２が嵌合凹部３１側に押し付けられている。さらに、処置具挿通用チューブ３５の後端部（図示略）は操作部１１の直前に設けた鉗子口３６に接続している。 As shown in FIGS. 2 and 4, a treatment instrument insertion passage 27 that penetrates the resin portion 25 and has a circular cross-section is formed in the resin portion 25, and the front portion of the treatment instrument insertion passage 27 is a resin. It is inclined with respect to the axis of the portion 25 (insertion portion 13). The front end portion of the treatment instrument insertion passage 27 is a front end small diameter portion 28 having a smaller diameter than the other portions of the treatment instrument insertion passage 27, and the portion located immediately after the front end small diameter portion 28 in the treatment instrument insertion passage 27 is A tube fixing portion 29 for fixing a distal end portion of a treatment instrument insertion tube 35 described later is provided. Further, the front end of the front end small-diameter portion 28 is an outlet opening 30 that opens at the inclined surface 26, and a fitting recess 31 is formed in the front end portion of the peripheral portion of the outlet opening 30 (the peripheral surface of the front end small-diameter portion 28). It is.
The fitting recess 31 is fitted with a hard member 32 having the same shape as the fitting recess 31. The hard member 32 is made of stainless steel, which is a metal harder than the resin portion 25, and the opposing surfaces of the hard member 32 and the fitting recess 31 are bonded to each other with an adhesive. As shown in FIGS. 5 and 6, the hard member 32 is obtained by processing a stainless steel cylinder. Specifically, a cutting tool (not shown) having an arc shape whose cross-sectional shape is the same diameter as the front end small-diameter portion 28 (larger than the cylinder) is linearly moved in the direction of arrow A in FIG. Is cut out, and an engagement recess 33 having an arc shape whose cross-sectional shape is the same diameter as the tube fixing portion 29 (larger than the cylinder) is provided at one end thereof. When the hard member 32 having such a shape is fitted into the fitting recess 31, the surface of the engagement recess 33 is continuous with the tube fixing portion 29 as shown in FIGS. The surface of the portion excluding 33 is continuous with the front end small diameter portion 28.
As shown in FIGS. 2 and 4, a treatment instrument insertion tube 35 having flexibility is inserted into the insertion portion 13, and the front end side of the treatment instrument insertion tube 35 is in the treatment instrument insertion passage 27. Is located. As shown in FIG. 4, the front end portion of the treatment instrument insertion tube 35 is fitted into the tube fixing portion 29, and further, a part of the distal end (the lower end portion in FIGS. 2 and 4) is an engagement recess of the hard member 32. 33, the hard member 32 is pressed against the fitting recess 31 side by the front end portion of the treatment instrument insertion tube 35. Further, the rear end portion (not shown) of the treatment instrument insertion tube 35 is connected to a forceps port 36 provided immediately before the operation portion 11.

超音波内視鏡１０の鉗子口３６にはその周面が硬質樹脂（例えばＰＥＥＫ樹脂）によって構成された穿刺針４０を挿通可能である。
穿刺針４０を鉗子口３６に挿通すると、図４に示すように穿刺針４０の先端部が処置具挿通用チューブ３５及び前端小径部２８を通って出口開口３０から傾斜面２６の前方に突出する。このとき、図４に仮想線で示したように穿刺針４０の周面が出口開口３０の周縁部（前端小径部２８の周面）の前端部を構成する硬質部材３２に接触することがあるが、硬質部材３２は穿刺針４０の周面より硬質のステンレス製なので、穿刺針４０が硬質部材３２に摺接しても硬質部材３２が穿刺針４０によって削られることはない。 A puncture needle 40 whose peripheral surface is made of a hard resin (for example, PEEK resin) can be inserted into the forceps port 36 of the ultrasonic endoscope 10.
When the puncture needle 40 is inserted through the forceps port 36, the distal end portion of the puncture needle 40 protrudes from the outlet opening 30 to the front of the inclined surface 26 through the treatment instrument insertion tube 35 and the front end small diameter portion 28 as shown in FIG. . At this time, as indicated by a virtual line in FIG. 4, the peripheral surface of the puncture needle 40 may come into contact with the hard member 32 constituting the front end portion of the peripheral portion of the outlet opening 30 (the peripheral surface of the front end small diameter portion 28). However, since the hard member 32 is made of stainless steel that is harder than the peripheral surface of the puncture needle 40, the hard member 32 is not scraped by the puncture needle 40 even if the puncture needle 40 is in sliding contact with the hard member 32.

以上、本発明を上記実施形態に基づいて説明したが、本発明は上記実施形態に限定されるものではなく様々な変形を施しながら実施可能である。
例えば、穿刺針４０を構成する金属は、穿刺針４０やその他の処置具の周面を構成する材料より硬質なものであればステンレスでなくてもよい。
また、本実施形態では処置具の周面が最も摺接し易い出口開口３０の周縁部（前端小径部２８の周面）の前端部を硬質部材３２で構成したが、出口開口３０の周縁部全周を硬質部材３２で構成してもよい。 As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to the said embodiment, It can implement, giving various deformation | transformation.
For example, the metal constituting the puncture needle 40 may not be stainless as long as it is harder than the material constituting the peripheral surface of the puncture needle 40 or other treatment instrument.
Further, in this embodiment, the front end portion of the peripheral portion of the outlet opening 30 (the peripheral surface of the front end small-diameter portion 28) where the peripheral surface of the treatment instrument is most slidably contacted is configured by the hard member 32. The circumference may be constituted by the hard member 32.

本発明の一実施形態の超音波内視鏡の全体図である。1 is an overall view of an ultrasonic endoscope according to an embodiment of the present invention. 超音波内視鏡の先端部の一部を破断して示す側面図である。It is a side view which fractures | ruptures and shows a part of front-end | tip part of an ultrasonic endoscope. 超音波内視鏡の先端部近傍の図２のIII矢線方向に見た図である。It is the figure seen in the III arrow line direction of FIG. 2 of the front-end | tip part vicinity of an ultrasonic endoscope. 図２のIV部の拡大縦断側面図である。FIG. 4 is an enlarged vertical side view of the IV part of FIG. 硬質部材の斜視図である。It is a perspective view of a hard member. 硬質部材の側面図である。It is a side view of a hard member. 従来例の超音波内視鏡の先端部の一部を破断して示す側面図である。It is a side view which fractures | ruptures and shows a part of front-end | tip part of the ultrasonic endoscope of a prior art example.

符号の説明Explanation of symbols

１０ 超音波内視鏡
１１ 操作部
１２ 外皮材
１３ 挿入部
１４ ライトガイド用チューブ
１５ 超音波画像伝送用チューブ
１６ 光源用コネクタ
１７ 超音波画像用コネクタ
１８ 接眼部
１９ 湾曲部
２０ 湾曲操作レバー
２２ 超音波プローブ
２３ ２４ 環状溝
２５ 樹脂部
２６ 傾斜面
２７ 処置具挿通路
２８ 前端小径部
２９ チューブ固定部
３０ 出口開口
３１ 嵌合凹部
３２ 硬質部材
３３ 係合凹部
３５ 処置具挿通用チューブ
３６ 鉗子口
４０ 穿刺針（処置具）
Ｌ１ 照明レンズ
Ｌ２ 対物レンズ
ＬＳ 光源装置
ＵＣ 超音波画像伝送用ケーブル DESCRIPTION OF SYMBOLS 10 Ultrasonic endoscope 11 Operation part 12 Outer material 13 Insertion part 14 Light guide tube 15 Ultrasonic image transmission tube 16 Light source connector 17 Ultrasonic image connector 18 Eyepiece part 19 Bending part 20 Bending operation lever 22 Acoustic probe 23 24 Annular groove 25 Resin portion 26 Inclined surface 27 Treatment instrument insertion path 28 Front end small diameter portion 29 Tube fixing portion 30 Exit opening 31 Fitting recess 32 Hard member 33 Engagement recess 35 Treatment instrument insertion tube 36 Forceps port 40 Puncture Needle (treatment tool)
L1 Illumination lens L2 Objective lens LS Light source device UC Ultrasonic image transmission cable

Claims (3)

挿入部に、該挿入部の先端部に形成した超音波プローブの直後に位置する樹脂製の樹脂部を形成し、該樹脂部の外面に形成した該樹脂部の軸線に対して傾斜する傾斜面に対物レンズを設けた斜視型の超音波内視鏡において、
上記樹脂部の内部を貫通するように形成した処置具挿通路の出口開口を上記傾斜面に形成し、
該出口開口の周縁部の前端部に嵌合凹部を形成し、
該嵌合凹部に金属製の硬質部材を嵌合固定したことを特徴とする斜視型超音波内視鏡における処置具用出口開口の補強構造。 A resin-made resin part located immediately after the ultrasonic probe formed at the distal end of the insertion part is formed in the insertion part, and an inclined surface that is inclined with respect to the axis of the resin part formed on the outer surface of the resin part In a perspective type ultrasonic endoscope provided with an objective lens,
Forming the outlet opening of the treatment instrument insertion passage formed so as to penetrate the inside of the resin portion on the inclined surface;
Forming a fitting recess at the front end of the peripheral edge of the outlet opening;
A reinforcing structure of a treatment instrument outlet opening in a perspective ultrasonic endoscope, wherein a metal hard member is fitted and fixed to the fitting recess. 請求項１記載の斜視型超音波内視鏡における処置具用出口開口の補強構造において、
上記処置具挿通路内に、処置具が挿通する処置具挿通用チューブの先端部を配設し、該処置具挿通用チューブの先端部で上記硬質部材の表面を押さえた斜視型超音波内視鏡における処置具用出口開口の補強構造。 In the reinforcement structure of the exit opening for treatment tools in the perspective type ultrasonic endoscope according to claim 1,
A perspective ultrasonic endoscope in which a distal end portion of a treatment instrument insertion tube through which a treatment instrument is inserted is disposed in the treatment instrument insertion passage, and the surface of the hard member is pressed by the distal end portion of the treatment instrument insertion tube. The reinforcing structure of the exit opening for treatment tools in a mirror. 請求項２記載の斜視型超音波内視鏡における処置具用出口開口の補強構造において、
上記硬質部材の表面の後端部に係合凹部を形成し、
上記処置具挿通用チューブの先端部の一部を上記係合凹部に係合させた斜視型超音波内視鏡における処置具用出口開口の補強構造。 In the reinforcing structure of the outlet opening for the treatment instrument in the perspective ultrasonic endoscope according to claim 2,
An engagement recess is formed at the rear end of the surface of the hard member,
A reinforcing structure of an outlet opening for a treatment instrument in a perspective ultrasonic endoscope in which a part of a distal end portion of the treatment instrument insertion tube is engaged with the engagement recess.
JP2007194523A 2007-07-26 2007-07-26 Reinforcement structure of outlet opening for treatment tool in perspective type ultrasonic endoscope Active JP4996382B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2531458C1 (en) * 2013-08-14 2014-10-20 федеральное государственное бюджетное учреждение "Межотраслевой научно-технический комплекс "Микрохирургия глаза" имени академика С.Н. Федорова" Министерства здравоохранения Российской Федерации Method of treating hyperactive inferior oblique muscle of eye

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JPH07323001A (en) * 1994-05-31 1995-12-12 Olympus Optical Co Ltd Endoscope
JPH11267088A (en) * 1998-03-20 1999-10-05 Fuji Photo Optical Co Ltd Insertion portion of endoscope
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JP2005279299A (en) * 2005-06-06 2005-10-13 Olympus Corp Ultrasonic endoscope

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2531458C1 (en) * 2013-08-14 2014-10-20 федеральное государственное бюджетное учреждение "Межотраслевой научно-технический комплекс "Микрохирургия глаза" имени академика С.Н. Федорова" Министерства здравоохранения Российской Федерации Method of treating hyperactive inferior oblique muscle of eye

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