JP3450730B2 - Ultrasound endoscope tip - Google Patents
Ultrasound endoscope tipInfo
- Publication number
- JP3450730B2 JP3450730B2 JP36383998A JP36383998A JP3450730B2 JP 3450730 B2 JP3450730 B2 JP 3450730B2 JP 36383998 A JP36383998 A JP 36383998A JP 36383998 A JP36383998 A JP 36383998A JP 3450730 B2 JP3450730 B2 JP 3450730B2
- Authority
- JP
- Japan
- Prior art keywords
- treatment instrument
- ultrasonic
- transducer array
- ultrasonic transducer
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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】[0001]
【発明の属する技術分野】この発明は、ラジアル走査を
行うための環状の超音波振動子アレイが挿入部先端に配
置された超音波内視鏡の先端部に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distal end portion of an ultrasonic endoscope in which an annular ultrasonic transducer array for performing radial scanning is arranged at the distal end of an insertion portion.
【０００２】[0002]
【従来の技術】超音波内視鏡の先端部の挿入部先端に
は、光学観察を行うための部材と、超音波走査を行うた
めの部材と、注射具等の処置具を突出させるための部材
とが併設されるので、一般の内視鏡より大型になって患
者に与える苦痛も大きなものになる。2. Description of the Related Art At the distal end of the insertion portion of the distal end of an ultrasonic endoscope, a member for performing optical observation, a member for performing ultrasonic scanning, and a treatment tool such as an injection tool are projected. Since the member and the member are provided side by side, the size of the endoscope is larger than that of a general endoscope, and the pain caused to the patient is also great.
【０００３】そこで、挿入部先端を比較的小型化するた
めの一つの方策として、ラジアル走査を行うための環状
の超音波振動子アレイが用いられており、環状に配置さ
れた超音波振動子間の継ぎ目に光学部材や処置具突出口
を配置していた（特開平２−２６５５３３号）。Therefore, as one measure for making the tip of the insertion portion relatively small, an annular ultrasonic transducer array for performing radial scanning is used, and between ultrasonic transducers arranged in a circular shape. An optical member and a treatment tool projecting port were arranged at the joint (Japanese Patent Laid-Open No. 2-265533).
【０００４】[0004]
【発明が解決しようとする課題】超音波信号は空気中に
おける伝達性がよくないので、体腔内から超音波走査を
行う場合には、脱気水等が充填されたバルーンで超音波
振動子アレイを囲み、バルーンを体内粘膜に押し付けた
状態で超音波信号の発受信を行うとよい。Since ultrasonic signals do not have good transmissibility in the air, when ultrasonic scanning is performed from the inside of a body cavity, an ultrasonic transducer array is used with a balloon filled with deaerated water or the like. It is advisable to perform ultrasonic signal transmission / reception in a state in which the balloon is pressed against the mucous membrane in the body.
【０００５】しかし、上述のように超音波振動子間の継
ぎ目に処置具突出口が配置されていると、そこから突出
される注射具等の処置具によってバルーンが突き破られ
てしまうので、バルーンを用いた良好な超音波観察を行
うことができない。However, when the treatment instrument projecting port is arranged at the joint between the ultrasonic transducers as described above, the balloon is ruptured by the treatment instrument such as an injection instrument projecting from the projecting port. It is not possible to perform good ultrasonic observation using the.
【０００６】そこで本発明は、ラジアル走査を行うため
の環状の超音波振動子アレイが用いられた超音波内視鏡
において、バルーンを処置具で破損する恐れのない状態
に取り付けて良好な超音波観察をすることができる超音
波内視鏡の先端部を提供することを目的とする。In view of this, the present invention provides an ultrasonic endoscope using an annular ultrasonic transducer array for performing radial scanning, in which the balloon is mounted in a state where there is no risk of damage to the treatment tool, and good ultrasonic waves are obtained. An object of the present invention is to provide a distal end portion of an ultrasonic endoscope that can be observed.
【０００７】[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、ラジアル走査を
行うための環状の超音波振動子アレイが挿入部先端に軸
線周りに配置され、処置具挿通チャンネルに通された処
置具の先端部分を突出させるための処置具突出口が上記
超音波振動子アレイより先側の上記挿入部先端の側面に
配置されていることを特徴とする。In order to achieve the above object, the distal end portion of the ultrasonic endoscope of the present invention has an annular ultrasonic transducer array for performing radial scanning around the axis line at the distal end of the insertion portion. And a treatment instrument projecting port for projecting the tip portion of the treatment instrument passed through the treatment instrument insertion channel is disposed on the side surface of the tip of the insertion section, which is ahead of the ultrasonic transducer array. Characterize.
【０００８】なお、上記処置具突出口から突出される処
置具の突出方向を遠隔操作によって調整するための処置
具起上片が上記処置具突出口内に配置されていてもよ
い。また、上記超音波振動子アレイ部分を囲んで、液体
の充填によって膨らませられるバルーンが取り付けられ
ていてもよい。[0008] A treatment instrument raising piece for remotely adjusting the projecting direction of the treatment instrument projected from the treatment instrument projecting port may be arranged in the treatment instrument projecting port. Further, a balloon that is inflated by filling with a liquid may be attached so as to surround the ultrasonic transducer array portion.
【０００９】そして、上記処置具突出口と並んで光学観
察窓が配置されていてもよく、上記超音波振動子アレイ
が上記挿入部先端の斜め前方に向けてラジアル走査する
ように配置されていてもよい。An optical observation window may be arranged side by side with the treatment tool projecting opening, and the ultrasonic transducer array is arranged so as to perform radial scanning diagonally forward of the tip of the insertion portion. Good.
【００１０】[0010]
【発明の実施の形態】図面を参照して本発明の実施の形
態を説明する。図１と図２は、本発明の第１の実施の形
態の超音波内視鏡の先端部の側面断面略示図と平面略示
図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. 1 and 2 are a schematic side sectional view and a schematic plan view of a distal end portion of an ultrasonic endoscope according to a first embodiment of the present invention.
【００１１】挿入部１の先端に連結された先端部本体２
の最先端部分の側面には、図２に示されるように、光学
観察窓３と処置具突出口４とが軸線をはさんで並んで配
置されており、それより後方位置に、ラジアル走査を行
うための円環状の超音波振動子アレイ５が配置されてい
る。３０は、光学観察範囲を照明するための照明窓であ
る。A tip portion main body 2 connected to the tip of the insertion portion 1
As shown in FIG. 2, an optical observation window 3 and a treatment instrument projecting port 4 are arranged side by side with the axis line on the side of the most distal end of the, and a radial scan is performed at a position rearward of the optical observation window 3. An annular ultrasonic transducer array 5 for performing the operation is arranged. Reference numeral 30 is an illumination window for illuminating the optical observation range.
【００１２】超音波振動子アレイ５は、先端部本体２の
軸線に対して傾けて配置されている。その結果、図１に
示されるように、超音波走査方向Ａは先端部本体２の軸
線に対して垂直ではなく斜め方向に向いている。The ultrasonic transducer array 5 is arranged so as to be inclined with respect to the axis of the tip end main body 2. As a result, as shown in FIG. 1, the ultrasonic scanning direction A is not perpendicular to the axis of the tip body 2 but is oblique.
【００１３】超音波振動子アレイ５は、円筒状に配置さ
れた超音波振動子を放射状に多数に分割して、それらが
超音波の発受信を順次行うように設けられており、いわ
ゆるラジアル走査による超音波走査が行われる。The ultrasonic transducer array 5 is provided so that a plurality of ultrasonic transducers arranged in a cylindrical shape are radially divided and the ultrasonic transducers sequentially transmit and receive ultrasonic waves, so-called radial scanning. Ultrasonic scanning is performed.
【００１４】超音波振動子アレイ５の表面はその配置上
から光学観察窓３の表面より少し凹んでいるので、その
凹み部分には超音波がよく通過する例えばポリメチルペ
ンテン６等が充填されている。Since the surface of the ultrasonic transducer array 5 is slightly recessed from the surface of the optical observation window 3 due to its arrangement, the recessed portion is filled with, for example, polymethylpentene 6 which allows ultrasonic waves to pass therethrough. There is.
【００１５】光学観察窓３と処置具突出口４は、超音波
走査方向Ａが斜め前方に向いている位置の超音波振動子
アレイ５の前方位置に配置されており、光学観察方向
は、超音波走査方向Ａに合わせて前方斜視にしてもよい
し、側方視にしてもよい。The optical observation window 3 and the treatment instrument projecting port 4 are arranged in front of the ultrasonic transducer array 5 at a position where the ultrasonic scanning direction A is directed obliquely forward, and the optical observation direction is It may be a front perspective view or a side view according to the sound wave scanning direction A.
【００１６】処置具突出口４内には、突出される処置具
１００の先端部分の突出方向を調整するための処置具起
上片１１が、支軸１２を中心に揺動自在に配置されてお
り、その奥には、挿入部１内に全長にわたって挿通配置
された処置具挿通チャンネル１４の先端部分が接続され
ている。In the treatment instrument projecting port 4, a treatment instrument raising piece 11 for adjusting the projecting direction of the tip portion of the treatment instrument 100 to be projected is disposed so as to be swingable around a support shaft 12. The distal end portion of the treatment instrument insertion channel 14 that is inserted and arranged over the entire length in the insertion portion 1 is connected to the inside thereof.
【００１７】処置具起上片１１は、挿入部１の手元側端
部に連結された操作部（図示せず）からの遠隔操作によ
って進退操作される操作ワイヤ１３によって揺動され、
それによって、処置具挿通チャンネル１４内に挿通され
た処置具１００の先端部分の突出方向が変化する。The treatment instrument raising piece 11 is swung by an operation wire 13 that is operated to move back and forth by a remote operation from an operation portion (not shown) connected to the proximal end of the insertion portion 1,
As a result, the protruding direction of the distal end portion of the treatment instrument 100 inserted into the treatment instrument insertion channel 14 changes.
【００１８】なお、処置具挿通チャンネル１４、操作ワ
イヤ１３、光学観察像伝達部材（イメージガイド又は撮
像信号伝送ケーブル）及び照明用ライトガイド等は超音
波振動子アレイ５の内側の空間を通過する状態に配置さ
れている。The treatment instrument insertion channel 14, the operation wire 13, the optical observation image transmission member (image guide or image pickup signal transmission cable), the illumination light guide, and the like pass through the space inside the ultrasonic transducer array 5. It is located in.
【００１９】１６は、弾力性のある薄いゴム材によって
膨縮自在に形成されたバルーンであり、超音波振動子ア
レイ５を囲むように、Ｏリング状のゴム製のバンド１７
によって挿入部１に着脱自在に取り付けられている。Reference numeral 16 is a balloon formed of a thin elastic rubber material so as to be expandable and contractible, and an O-ring-shaped rubber band 17 is formed so as to surround the ultrasonic transducer array 5.
It is detachably attached to the insertion part 1.
【００２０】バルーン１６内には、挿入部１内に挿通配
置された送水チューブ１８を介して脱気水等が出し入れ
され、バルーン１６はそのような液体の充填によって膨
らませられる。Degassed water or the like is put into or taken out of the balloon 16 through the water supply tube 18 which is inserted and arranged in the insertion portion 1, and the balloon 16 is inflated by filling with such liquid.
【００２１】したがって、バルーン１６を体腔内粘膜に
押し付けることによって、途中に空気層の介在しない良
好な超音波断層像を得ることができる。そして、処置具
１００はバルーン１６より先側から斜め前方に向かって
突出されるので、処置具１００でバルーン１６を突き破
る恐れがない。Therefore, by pressing the balloon 16 against the mucous membrane in the body cavity, a good ultrasonic tomographic image without an air layer in the middle can be obtained. Since the treatment tool 100 projects from the front side of the balloon 16 obliquely forward, there is no risk of the treatment tool 100 breaking through the balloon 16.
【００２２】超音波走査位置に対して処置具１００の先
端を向ける際には、処置具起上片１１を操作して、処置
具突出口４から突出した処置具１００の先端部分を後方
に起上させる。ただし、超音波操作方向Ａが斜め前方を
向いていることにより、処置具１００の先端を極端に後
方に戻す必要がないので、処置具１００の挿脱抵抗が軽
減されている。When the tip of the treatment instrument 100 is directed to the ultrasonic scanning position, the treatment instrument raising piece 11 is operated to raise the tip portion of the treatment instrument 100 protruding from the treatment instrument projecting port 4 rearward. Let it go up. However, since the ultrasonic operation direction A is directed obliquely forward, it is not necessary to return the distal end of the treatment instrument 100 extremely rearward, so that the insertion / removal resistance of the treatment instrument 100 is reduced.
【００２３】[0023]
【００２４】[0024]
【００２５】[0025]
【発明の効果】本発明によれば、ラジアル走査を行うた
めの環状の超音波振動子アレイを挿入部先端に軸線周り
に配置し、処置具挿通チャンネルに通された処置具の先
端部分を突出させるための処置具突出口を超音波振動子
アレイより先側の挿入部先端の側面に配置したことによ
り、超音波振動子アレイを囲むようにバルーンを取り付
けても処置具でバルーンを破損する恐れなく、良好な超
音波観察をすることができる。According to the present invention, an annular ultrasonic transducer array for performing radial scanning is arranged around the axis at the tip of the insertion portion, and the distal end portion of the treatment instrument passed through the treatment instrument insertion channel is projected. By disposing the treatment tool projecting port for the treatment on the side surface of the tip of the insertion portion that is ahead of the ultrasonic transducer array, even if the balloon is attached so as to surround the ultrasonic transducer array, the balloon may be damaged by the treatment tool. Therefore, good ultrasonic observation can be performed.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の第１の実施の形態の超音波内視鏡の先
端部の側面断面略示図である。FIG. 1 is a schematic side sectional view of a distal end portion of an ultrasonic endoscope according to a first embodiment of the present invention.
【図２】本発明の第１の実施の形態の超音波内視鏡の先
端部の平面略示図である。FIG. 2 is a schematic plan view of a distal end portion of the ultrasonic endoscope according to the first embodiment of the present invention.
１ 挿入部 ２ 先端部本体 ３ 光学観察窓 ４ 処置具突出口 ５ 超音波振動子アレイ １１ 処置具起上片 １４ 処置具挿通チャンネル １６ バルーン １００ 処置具 1 Insert 2 Tip body 3 Optical observation window 4 Treatment tool protruding port 5 Ultrasonic transducer array 11 Treatment tool raising piece 14 Treatment tool insertion channel 16 balloons 100 treatment tools
フロントページの続き (56)参考文献 特開 昭62−74348（ＪＰ，Ａ) 特開 昭63−130052（ＪＰ，Ａ) 特開 平２−265534（ＪＰ，Ａ) 特開 平５−56912（ＪＰ，Ａ) 特開 平５−269133（ＪＰ，Ａ) 特開 平７−227394（ＪＰ，Ａ) 特開 平８−126644（ＪＰ，Ａ) 特開 平８−140976（ＪＰ，Ａ) 特開 平８−154940（ＪＰ，Ａ) 実開 昭48−96790（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) A61B 8/00 Continuation of the front page (56) Reference JP 62-74348 (JP, A) JP 63-130052 (JP, A) JP 2-265534 (JP, A) JP 5-56912 (JP , A) JP 5-269133 (JP, A) JP 7-227394 (JP, A) JP 8-126644 (JP, A) JP 8-140976 (JP, A) JP 8-154940 (JP, A) Actual exploitation Sho 48-96790 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) A61B 8/00
Claims (2)
に、ラジアル走査を行うための環状の超音波振動子アレ
イが上記挿入部先端の表面から出っ張らないように上記
軸線方向に対して傾けて配置され、液体の充填によって
膨らまされるバルーンが上記超音波振動子アレイ部分を
囲む状態に取り付けられると共に、超音波走査方向が斜
め前方に向いている位置の上記超音波振動子アレイの前
方位置に処置具突出口が配置されて、上記処置具突出口
から突出される処置具の突出方向を遠隔操作によって調
整するための処置具起上片が上記処置具突出口内に配置
され、上記処置具突出口から上記挿入部先端の真横に向
かって突出する処置具が、上記バルーンに触れることな
く上記超音波振動子アレイによるラジアル走査範囲に入
るようにしたことを特徴とする超音波内視鏡の先端部。1. An annular ultrasonic transducer array for performing radial scanning is tilted with respect to the axis direction of the insertion section tip having a straight axis so as not to project from the surface of the insertion section tip. Placed and filled with liquid
A balloon that is inflated will cover the ultrasonic transducer array section.
A treatment tool that is attached in a surrounding state and has a treatment tool projecting port arranged at a front position of the ultrasonic transducer array at a position where the ultrasonic scanning direction is directed obliquely forward and projecting from the treatment tool projecting port. A treatment instrument raising piece for remotely adjusting the protrusion direction of the treatment instrument is arranged in the treatment instrument protrusion opening, and is directed from the treatment instrument protrusion opening to the side of the insertion portion distal end.
Do not touch the balloon with a treatment tool that once protrudes.
Within the radial scanning range by the ultrasonic transducer array
Tip of the ultrasonic endoscope is characterized in that the so that.
置されている請求項１記載の超音波内視鏡の先端部。Wherein the distal end portion of the ultrasonic endoscope according to claim 1, wherein the optical observation window, along with the treatment instrument projection port is located.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36383998A JP3450730B2 (en) | 1998-12-22 | 1998-12-22 | Ultrasound endoscope tip |
| US09/466,918 US6338717B1 (en) | 1998-12-22 | 1999-12-20 | Tip of ultrasonic endoscope |
| DE19962209A DE19962209B4 (en) | 1998-12-22 | 1999-12-22 | Tip for an ultrasound endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36383998A JP3450730B2 (en) | 1998-12-22 | 1998-12-22 | Ultrasound endoscope tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000185043A JP2000185043A (en) | 2000-07-04 |
| JP3450730B2 true JP3450730B2 (en) | 2003-09-29 |
Family
ID=18480326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36383998A Expired - Fee Related JP3450730B2 (en) | 1998-12-22 | 1998-12-22 | Ultrasound endoscope tip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3450730B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160287210A1 (en) * | 2015-03-31 | 2016-10-06 | Boston Scientific Scimed, Inc. | Devices and methods for ultrasound imaging |
-
1998
- 1998-12-22 JP JP36383998A patent/JP3450730B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000185043A (en) | 2000-07-04 |
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