JP4142403B2 - Ultrasound endoscope tip - Google Patents

Ultrasound endoscope tip Download PDF

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Publication number
JP4142403B2
JP4142403B2 JP2002322141A JP2002322141A JP4142403B2 JP 4142403 B2 JP4142403 B2 JP 4142403B2 JP 2002322141 A JP2002322141 A JP 2002322141A JP 2002322141 A JP2002322141 A JP 2002322141A JP 4142403 B2 JP4142403 B2 JP 4142403B2
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Japan
Prior art keywords
ultrasonic
treatment
treatment instrument
probe
ultrasound
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Expired - Fee Related
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JP2002322141A
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Japanese (ja)
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JP2004154300A (en
Inventor
慎介 岡田
裕幸 神田
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Hoya Corp
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Hoya Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments 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
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00098—Deflecting means for inserted tools

Description

【０００１】
【発明の属する技術分野】
この発明は、光学観察をしながら体内に挿入されて超音波断層像を得ることができる超音波内視鏡の先端部に関する。
【０００２】
【従来の技術】
超音波内視鏡は一般に、挿入部の先端部分から超音波信号を発受信してセクタスキャンするための超音波プローブと、超音波信号によって走査される方向を光学観察するための光学観察窓と、超音波信号によって走査される方向に処置具を突出させるための処置具突出口とが配置されている（例えば、特許文献１）。
【０００３】
【特許文献１】
特開平３−１３１２４３号公報
【０００４】
【発明が解決しようとする課題】
超音波内視鏡は一般に、光学観察をしながら挿入部を体内の目標位置に誘導したら、超音波断層像を観察しながら処置具である注射針を粘膜面の奥にある臓器や患部に突き刺して、通常の内視鏡では行うことができない独特の処置を行うことができる。
【０００５】
しかし、そのようにして注射針を用いた処置は、薬液や体液の注入又は排出しか行うことができず、それと同時に超音波断層像観察下に他の処置具を使用することができないので、術者にとっては手技が限定されてしまって思い通りの処置を行えない場合があった。
【０００６】
そこで本発明は、複数の処置具を超音波断層像観察下に同時に使用可能にすることにより、術者が症例に適した手技を選択して思い通りの処置を行うことができる超音波内視鏡の先端部を提供することを目的とする。
【０００７】
【課題を解決するための手段】
上記の目的を達成するため、本発明の超音波内視鏡の先端部は、挿入部の先端部分から超音波信号を発受信してセクタスキャンするための超音波プローブと、超音波信号によって走査される方向を光学観察するための光学観察窓と、超音波信号によって走査される方向に処置具を突出させるための処置具突出口とが配置された超音波内視鏡の先端部において、処置具突出口として、超音波プローブから発受信される超音波信号が走査される平面に沿って処置具を突出させるための複数の処置具突出口を並べて配置したものである。
【０００８】
なお、複数の処置具突出口の少なくとも一つに、そこから突出される処置具の突出方向を平面に沿って変化させるための処置具起上片が配置されていると、一方の処置具突出口から突出される処置具の突出角度を他方の処置具突出口から突出される処置具に対して任意に変化させて所望の処置に都合のよい状態にすることができる。
【０００９】
【発明の実施の形態】
図面を参照して本発明の実施例を説明する。
図１、図２及び図３は、本発明の第１の実施例の超音波内視鏡の先端部の斜視図、平面図及び側面断面図（図２におけるIII−III断面図）である。ただし、処置具突出口６，７から処置具１００，２００が突出した状態は図３のみに記載されている。
【００１０】
フレキシブルな挿入部１の先端に連結された先端部本体２の先側半部には、先端部本体２の側方をセクタスキャン（扇形走査）するように超音波信号を発受信するコンベックスタイプの超音波プローブ３が取り付けられている。
【００１１】
超音波プローブ３による超音波走査範囲Ｕは、先端部本体２の軸線に沿う平面上（即ち、先端部本体２の軸線をそっくり含むか、或いは軸線に対して近接して平行な平面上）にあり、一点鎖線は、その平面が超音波プローブ３の表面と交差する位置を示している（以下、平面Ａという）。
【００１２】
先端部本体２の後側半部には、超音波プローブ３の超音波走査範囲Ｕの方に向いた斜面２０が形成されていて、超音波走査範囲Ｕの方向を光学観察するための光学観察窓４と、その観察範囲を照明するための照明窓５がその斜面２０に並んで配置されている。
【００１３】
また、先端部本体２の斜面２０には、超音波走査範囲Ｕの方向に処置具を突出させるための第１の処置具突出口６と第２の処置具突出口７が、平面Ａとの交叉線上に二つ並んで配置されている。
【００１４】
第１の処置具突出口６と第２の処置具突出口７には、挿入部１内に挿通配置された第１の処置具挿通チャンネル６０と第２の処置具挿通チャンネル７０各先端が、先端部本体２の後端位置で接続されている。
【００１５】
そして、各処置具挿通チャンネル６０，７０内に通された第１の処置具（例えば注射針）１００と第２の処置具（例えば鉗子）２００の先端部分が、平面Ａに沿って超音波走査範囲Ｕ内に各処置具突出口６，７から突出される。
【００１６】
したがって、術者は複数の処置具１００，２００をモニタで超音波断層像中に観察しながら同時に使用することができるので、その症例に適した手技を選択して思い通りの処置を行うことができる。
【００１７】
図４及び図５は、本発明の第２の実施例の超音波内視鏡の先端部の平面図と側面断面図（図４におけるＶ−Ｖ断面図）であり、処置具突出口６，７から処置具１００，２００が突出した状態は図５のみに記載されている。
【００１８】
この実施例においては、第１の処置具突出口６から突出される第１の処置具１００の突出方向を超音波走査範囲Ｕ内において平面Ａに沿って変化させるための処置具起上片８が、第１の処置具突出口６部分に配置されている。
【００１９】
処置具起上片８は支軸９によって先端部本体２に回転自在に支持されており、挿入部１の基端に連結された操作部（図示せず）からの操作によって軸線方向に進退する操作ワイヤ１０の先端が処置具起上片８に連結されている。
【００２０】
したがって、操作ワイヤ１０を介した遠隔操作により処置具起上片８を支軸９を中心に動かすことによって、第１の処置具突出口６から突出される第１の処置具１００の突出角度を第２の処置具突出口７から突出される第２の処置具２００に対して超音波走査範囲Ｕ内において平面Ａに沿って任意に変化させることができる。なお、処置具起上片８を第２の処置具突出口７側に配置してもよく、第１の処置具突出口６と第２の処置具突出口７の両方に配置してもよい。
【００２１】
なお、本発明は上記の各実施例に限定されるものではなく、例えば処置具突出口を三つ以上配置してもよい。
【００２２】
【発明の効果】
本発明によれば、処置具突出口として、超音波プローブから発受信される超音波信号が走査される平面に沿って処置具を突出させるための複数の処置具突出口を並べて配置したことにより、複数の処置具を超音波断層像観察下に同時に使用することができるので、術者が症例に適した手技を選択して思い通りの処置を行うことができる。
【図面の簡単な説明】
【図１】本発明の第１の実施例の超音波内視鏡の先端部の斜視図である。
【図２】本発明の第１の実施例の超音波内視鏡の先端部の平面図である。
【図３】本発明の第１の実施例の超音波内視鏡の先端部の側面断面図（図２におけるIII−III断面図）である。
【図４】本発明の第２の実施例の超音波内視鏡の先端部の平面図である。
【図５】本発明の第１の実施例の超音波内視鏡の先端部の側面断面図（図４におけるＶ−Ｖ断面図）である。
【符号の説明】
１ 挿入部
２ 先端部本体
３ 超音波プローブ
４ 光学観察窓
５ 照明窓
６ 第１の処置具突出口
７ 第２の処置具突出口
８ 処置具起上片
２０ 斜面
１００，２００ 処置具
Ａ 超音波信号が走査される平面
Ｕ 超音波走査範囲[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a distal end portion of an ultrasonic endoscope that can be inserted into a body and obtain an ultrasonic tomographic image while performing optical observation.
[0002]
[Prior art]
An ultrasonic endoscope generally includes an ultrasonic probe for transmitting and receiving an ultrasonic signal from the distal end portion of an insertion portion and performing sector scanning, and an optical observation window for optically observing a direction scanned by the ultrasonic signal. A treatment instrument protrusion for projecting the treatment instrument in the direction scanned by the ultrasonic signal is disposed (for example, Patent Document 1).
[0003]
[Patent Document 1]
JP-A-3-131243
[Problems to be solved by the invention]
In general, an ultrasonic endoscope guides an insertion portion to a target position in the body while performing optical observation, and then punctures an organ or an affected part deep inside the mucosal surface while observing an ultrasonic tomographic image. Thus, a unique treatment that cannot be performed with a normal endoscope can be performed.
[0005]
However, the treatment using the injection needle in such a manner can only inject or discharge the drug solution or body fluid, and at the same time, other treatment tools cannot be used under the observation of the ultrasonic tomographic image. For some people, the procedure was limited and it was not possible to perform the treatment as intended.
[0006]
Accordingly, the present invention provides an ultrasonic endoscope that enables a surgeon to select a procedure suitable for a case and perform a desired treatment by enabling a plurality of treatment tools to be used simultaneously while observing an ultrasonic tomogram. It aims at providing the front-end | tip part.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the distal end portion of the ultrasonic endoscope of the present invention is scanned by an ultrasonic probe for transmitting and receiving an ultrasonic signal from the distal end portion of the insertion portion and performing sector scanning, and the ultrasonic signal. In the distal end portion of the ultrasonic endoscope in which an optical observation window for optically observing the direction to be measured and a treatment instrument projection port for projecting the treatment instrument in the direction scanned by the ultrasonic signal are disposed A plurality of treatment instrument projection openings for projecting the treatment instrument along a plane in which an ultrasonic signal transmitted and received from the ultrasound probe is scanned are arranged as the instrument projection openings.
[0008]
In addition, when at least one of the plurality of treatment instrument protrusions is provided with a treatment instrument raising piece for changing the projection direction of the treatment instrument projected therefrom along the plane, one treatment instrument protrusion The protrusion angle of the treatment tool protruding from the mouth can be arbitrarily changed with respect to the treatment tool protruding from the other treatment tool protrusion port, so that a state convenient for the desired treatment can be obtained.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
1, 2 and 3 are a perspective view, a plan view and a side sectional view (III-III sectional view in FIG. 2) of the distal end portion of the ultrasonic endoscope according to the first embodiment of the present invention. However, the state in which the treatment tools 100 and 200 protrude from the treatment tool protrusions 6 and 7 is described only in FIG.
[0010]
Convex type that emits and receives ultrasonic signals so that the side of the tip portion main body 2 is sector-scanned (fan-shaped scan) in the front half of the tip portion main body 2 connected to the tip of the flexible insertion portion 1. An ultrasonic probe 3 is attached.
[0011]
The ultrasonic scanning range U by the ultrasonic probe 3 is on a plane along the axis of the tip end main body 2 (that is, on the plane that includes the axis of the tip end main body 2 or is close to and parallel to the axis). Yes, an alternate long and short dash line indicates a position where the plane intersects the surface of the ultrasonic probe 3 (hereinafter referred to as plane A).
[0012]
An inclined surface 20 facing the ultrasonic scanning range U of the ultrasonic probe 3 is formed on the rear half of the tip body 2, and optical observation for optical observation of the direction of the ultrasonic scanning range U is performed. A window 4 and an illumination window 5 for illuminating the observation range are arranged side by side on the slope 20.
[0013]
Further, on the inclined surface 20 of the distal end portion main body 2, a first treatment instrument projection port 6 and a second treatment instrument projection port 7 for projecting the treatment instrument in the direction of the ultrasonic scanning range U are provided with a plane A. Two are arranged side by side on the crossing line.
[0014]
The distal ends of the first treatment instrument insertion channel 60 and the second treatment instrument insertion channel 70, which are inserted and arranged in the insertion portion 1, are provided at the first treatment instrument protrusion 6 and the second treatment instrument protrusion 7, respectively. The tip end body 2 is connected at the rear end position.
[0015]
Then, the distal end portions of the first treatment tool (for example, injection needle) 100 and the second treatment tool (for example, forceps) 200 passed through the treatment tool insertion channels 60 and 70 are ultrasonically scanned along the plane A. It protrudes from each treatment instrument protrusion port 6 and 7 in the range U.
[0016]
Therefore, the surgeon can use the plurality of treatment tools 100 and 200 simultaneously while observing them in the ultrasonic tomographic image with the monitor, and can select the procedure suitable for the case and perform the desired treatment. .
[0017]
4 and 5 are a plan view and a side cross-sectional view (cross-sectional view taken along line VV in FIG. 4) of the distal end portion of the ultrasonic endoscope according to the second embodiment of the present invention. The state in which the treatment tools 100 and 200 protrude from 7 is shown only in FIG.
[0018]
In this embodiment, the treatment tool raising piece 8 for changing the protruding direction of the first treatment tool 100 protruding from the first treatment tool protrusion 6 along the plane A within the ultrasonic scanning range U. However, it is arrange | positioned at the 1st treatment tool protrusion port 6 part.
[0019]
The treatment instrument raising piece 8 is rotatably supported by the distal end portion body 2 by a support shaft 9, and advances and retreats in the axial direction by an operation from an operation portion (not shown) connected to the proximal end of the insertion portion 1. The distal end of the operation wire 10 is connected to the treatment instrument raising piece 8.
[0020]
Therefore, by moving the treatment instrument raising piece 8 around the support shaft 9 by remote operation via the operation wire 10, the protrusion angle of the first treatment instrument 100 protruding from the first treatment instrument protrusion 6 is changed. The second treatment tool 200 protruding from the second treatment tool protrusion 7 can be arbitrarily changed along the plane A within the ultrasonic scanning range U. The treatment instrument raising piece 8 may be disposed on the second treatment instrument protrusion 7 side, or may be disposed on both the first treatment instrument protrusion 6 and the second treatment instrument protrusion 7. .
[0021]
In addition, this invention is not limited to said each Example, For example, you may arrange | position three or more treatment tool protrusions.
[0022]
【The invention's effect】
According to the present invention, a plurality of treatment instrument protrusions for projecting a treatment instrument along a plane in which an ultrasonic signal transmitted and received from an ultrasonic probe is scanned are arranged side by side as treatment instrument protrusions. Since a plurality of treatment tools can be used at the same time while observing an ultrasonic tomographic image, the surgeon can select a procedure suitable for the case and perform a desired treatment.
[Brief description of the drawings]
FIG. 1 is a perspective view of a distal end portion of an ultrasonic endoscope according to a first embodiment of the present invention.
FIG. 2 is a plan view of the distal end portion of the ultrasonic endoscope according to the first embodiment of the present invention.
FIG. 3 is a side cross-sectional view (III-III cross-sectional view in FIG. 2) of the distal end portion of the ultrasonic endoscope according to the first embodiment of the present invention.
FIG. 4 is a plan view of a distal end portion of an ultrasonic endoscope according to a second embodiment of the present invention.
FIG. 5 is a side sectional view (a VV sectional view in FIG. 4) of the distal end portion of the ultrasonic endoscope according to the first embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insertion part 2 Tip part main body 3 Ultrasound probe 4 Optical observation window 5 Illumination window 6 1st treatment tool protrusion 7 Second treatment tool protrusion 8 Treatment tool raising piece 20 Slope 100,200 Treatment tool A Ultrasound Plane U ultrasonic scanning range in which signal is scanned

Claims (2)

挿入部の先端部分から超音波信号を発受信してセクタスキャンするための超音波プローブと、上記超音波信号によって走査される方向を光学観察するための光学観察窓と、上記超音波信号によって走査される方向に処置具を突出させるための処置具突出口とが配置された超音波内視鏡の先端部において、
上記処置具突出口として、上記超音波プローブから発受信される超音波信号が走査される同一平面上に複数の処置具を略平行に突出させるための複数の処置具突出口が、上記超音波プローブによる超音波走査方向に向けて上記超音波プローブの後側に隣接して形成された斜面上の上記超音波プローブによる超音波走査面との交叉線上に並べて配置されていることを特徴とする超音波内視鏡の先端部。An ultrasonic probe for transmitting and receiving an ultrasonic signal from the distal end portion of the insertion portion and performing sector scanning, an optical observation window for optically observing the direction scanned by the ultrasonic signal, and scanning by the ultrasonic signal In the distal end portion of the ultrasonic endoscope in which the treatment instrument projecting port for projecting the treatment instrument in the direction to be placed is arranged,
A plurality of treatment instrument protrusions for projecting a plurality of treatment instruments substantially in parallel on the same plane in which an ultrasound signal transmitted and received from the ultrasound probe is scanned as the treatment instrument protrusion are the ultrasound. It is arranged side by side on the crossing line with the ultrasonic scanning surface by the ultrasonic probe on the slope formed adjacent to the rear side of the ultrasonic probe toward the ultrasonic scanning direction by the probe. The tip of an ultrasound endoscope. 上記複数の処置具突出口の少なくとも一つに、そこから突出される処置具の突出方向を上記平面に沿って変化させるための処置具起上片が配置されている請求項１記載の超音波内視鏡の先端部。The ultrasonic wave according to claim 1, wherein a treatment tool raising piece for changing a protruding direction of the treatment tool protruding therefrom along the plane is disposed in at least one of the plurality of treatment tool protrusions. End of the endoscope.
JP2002322141A 2002-11-06 2002-11-06 Ultrasound endoscope tip Expired - Fee Related JP4142403B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006325780A (en) * 2005-05-25 2006-12-07 Pentax Corp Distal end of ultrasonic endoscope
JP5006591B2 (en) * 2006-07-26 2012-08-22 Ｈｏｙａ株式会社 Ultrasound endoscope
JP4864603B2 (en) * 2006-08-18 2012-02-01 Ｈｏｙａ株式会社 Ultrasound endoscope
JP5097429B2 (en) * 2007-04-04 2012-12-12 Ｈｏｙａ株式会社 The tip of the sector scan type ultrasonic endoscope
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
WO2011113258A1 (en) * 2010-03-16 2011-09-22 广州市番禺区胆囊病研究所 Integrated hard ultrasonic endoscope system
DE102011007190A1 (en) * 2011-04-12 2012-10-18 Henke-Sass, Wolf Gmbh endoscope

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