JP3967562B2 - Ultrasound endoscope tip - Google Patents

Ultrasound endoscope tip Download PDF

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Publication number
JP3967562B2
JP3967562B2 JP2001150340A JP2001150340A JP3967562B2 JP 3967562 B2 JP3967562 B2 JP 3967562B2 JP 2001150340 A JP2001150340 A JP 2001150340A JP 2001150340 A JP2001150340 A JP 2001150340A JP 3967562 B2 JP3967562 B2 JP 3967562B2
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JP
Japan
Prior art keywords
distal end
ultrasonic
passage hole
constricted
arrangement
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
Application number
JP2001150340A
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Japanese (ja)
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JP2002336257A (en
Inventor
慎介 岡田
Original Assignee
ペンタックス株式会社
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by ペンタックス株式会社 filed Critical ペンタックス株式会社
Priority to JP2001150340A priority Critical patent/JP3967562B2/en
Publication of JP2002336257A publication Critical patent/JP2002336257A/en
Application granted granted Critical
Publication of JP3967562B2 publication Critical patent/JP3967562B2/en
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Expired - Fee Related legal-status Critical Current

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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】
超音波内視鏡の先端部は一般に、挿入部の先端に連結された先端部本体に、超音波信号を発受信走査するための超音波プローブと光学観察をするための対物光学系とが併設され、超音波プローブに接続された信号ケーブルが先端部本体に形成されたケーブル通過孔を通過して挿入部内に引き通された構成になっている。
【0003】
【発明が解決しようとする課題】
超音波内視鏡の先端部本体には、超音波プローブの信号ケーブルだけでなく 、光学繊維束や配管類など各種配置物を配置するための配置孔を形成する必要がある。
【0004】
しかし、超音波プローブの信号ケーブルは他の配置物と比較して最も太い部類のものなので、ケーブル通過孔を信号ケーブルの形に合わせて形成すると、他の配置物の配置孔のためのスペース確保が大きな制約を受け、内視鏡としての十分な性能を得るのが困難であった。
【0005】
そこで本発明は、超音波プローブに接続された信号ケーブル以外の配置物を通すための配置孔を先端部本体にできる限り太く形成して内視鏡として必要かつ十分な性能を確保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。
【0006】
【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、挿入部の先端に連結された先端部本体に、超音波信号を発受信走査するための超音波プローブと光学観察をするための対物光学系とが併設され、超音波プローブに接続された信号ケーブルが先端部本体に形成されたケーブル通過孔を通過して挿入部内に引き通された超音波内視鏡の先端部において、先端部本体のケーブル通過孔の周囲には、他の配置物を配置するための各種配置孔が形成されていて、ケーブル通過孔は、配置孔が形成されていない部分の形状に合わせて途中で断面形状を変化させて形成されているものである。
【0007】
【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3は超音波内視鏡の先端部の平面図、図4はそのIV−IV断面図であり、挿入部可撓管の先端に連結された先端部本体1の先側半部には、超音波信号により先端部本体1の側方をセクタスキャンするためのコンベックスタイプの超音波プローブ2が配置されている。
【0008】
そして、先端部本体1の先側半部と後側半部の間の偏平状に括れた部分には、図示されていないバルーンを緊縛部材などで取り付けるためのバルーン取付溝12が形成されている。
【0009】
その先端部本体1の後側半部に形成された斜面には、観察窓3と照明窓4が配置されている。そして図4に示されるように、照明窓4の奥には、照明用ライトガイド8の射出端部が配置され、観察窓3の奥に配置された対物光学系5による被写体の投影位置に固体撮像素子6が配置されている。7は、撮像信号等を伝送するための撮像信号線である。
【0010】
また、図3に示されるように、観察窓3及び照明窓4と並んで先端部本体1の後側半部に形成された処置具突出口9内には、図示されていない操作部から操作ワイヤ13を進退操作することによって揺動する処置具起上片14が配置されている。
【0011】
図5と図6は先端部本体1の後側を部分的に切断して示している。図5は平面断面図、図6は側面断面図であり、超音波プローブ2に入出力される電気信号を伝送するための信号ケーブル15が、先端部本体1の先側半部から後側半部内を通ってその後方の挿入部可撓管内に引き通されている。
【0012】
信号ケーブル15は、先端部本体1の長手方向に穿設されたケーブル通過孔10a,10b内に挿通配置されている。そして、図5に示されるように、ケーブル通過孔10a,10bの側方位置には、図示されていないバルーンに脱気水を出し入れするための通水孔16(配置孔)が先端部本体1に穿設されていて、通水接続管18の先端が通水孔16に後方から接続固着されている。
【0013】
また、図6に示されるように、ケーブル通過孔の後半部分10bの上方位置には、処置具を案内するための処置具挿通チャンネル20の先端部分が差し込まれたチャンネル接続管21が配置されていて、そのチャンネル接続管21が、先端部本体1に形成された孔(配置孔)に挿入固着されている。チャンネル接続管21は、斜め向きに配置されていて、後方位置になるほどケーブル通過孔10bに接近する配置になっている。
【0014】
また、図6におけるI−I断面を図示する図1に示されるように、ケーブル通過孔の後半部分10bの側方位置(通水接続管18と逆側)には、照明用ライトガイド8が、先端部本体1に形成された孔(配置孔)に挿通固着されている。二点鎖線は、先端部本体1の最後端部におけるチャンネル接続管21の位置を示している。
【0015】
ケーブル通過孔の後半部分10bは、信号ケーブル15の本来の断面形状である円形には形成されておらず、まずチャンネル接続管21、通水接続管18及び照明用ライトガイド8など各種配置物が配置された配置孔を必要かつ十分な大きさに形成し、その残余のスペースに合わせてケーブル通過孔の後半部分10bの断面形状が円形と矩形の中間的な異形状に形成されている。
【0016】
また、図6におけるII−II断面を図示する図2に示されるように、ケーブル通過孔の前半部分10aは、通水孔16と干渉しない位置に、偏平状に細く括れたバルーン取付溝12部分の断面形状に合わせて偏平な長円形の断面形状に形成されている。
【0017】
このように構成することにより、超音波プローブ2に接続された信号ケーブル15の断面形状を先端部本体1内で変化させて、信号ケーブル15以外の配置物を通す配置孔を必要かつ十分な大きさに形成することができる。
【0018】
【発明の効果】
本発明によれば、超音波プローブに接続された信号ケーブル以外の配置物を通すための配置孔を、先端部本体に無駄なスペースができないようにできる限り太く形成することができるので、内視鏡として必要かつ十分なレベルの性能を確保することができる。
【図面の簡単な説明】
【図1】本発明の実施例の超音波内視鏡の先端部の図6におけるI−I断面図である。
【図2】本発明の実施例の超音波内視鏡の先端部の図6におけるII−II断面図である。
【図3】本発明の実施例の超音波内視鏡の先端部の平面図である。
【図4】本発明の実施例の超音波内視鏡の先端部の図3におけるIV−IV断面図である。
【図5】本発明の実施例の超音波内視鏡の先端部の平面部分断面図である。
【図6】本発明の実施例の超音波内視鏡の先端部の側面部分断面図である。
【符号の説明】
1 先端部本体
2 超音波プローブ
3 観察窓
10a,10b ケーブル通過孔
15 信号ケーブル
8 照明用ライトガイド(配置物)
18 通水接続管(配置物)
21 チャンネル接続管(配置物)
[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]
The distal end portion of an ultrasonic endoscope is generally provided with an ultrasonic probe for transmitting and receiving ultrasonic signals and an objective optical system for optical observation at the distal end body connected to the distal end of the insertion portion. In addition, the signal cable connected to the ultrasonic probe passes through the cable passage hole formed in the main body of the distal end portion and is led into the insertion portion.
[0003]
[Problems to be solved by the invention]
It is necessary to form an arrangement hole for arranging various arrangement objects such as an optical fiber bundle and piping as well as a signal cable of the ultrasonic probe in the distal end body of the ultrasonic endoscope.
[0004]
However, since the signal cable of the ultrasonic probe is the thickest compared to other arrangements, if the cable passage hole is formed in accordance with the shape of the signal cable, a space is secured for the arrangement hole of the other arrangement. However, it is difficult to obtain sufficient performance as an endoscope due to significant restrictions.
[0005]
Accordingly, the present invention can ensure the necessary and sufficient performance as an endoscope by forming the arrangement hole for passing an arrangement other than the signal cable connected to the ultrasonic probe as thick as possible in the distal end body. It aims at providing the front-end | tip part of an ultrasonic endoscope.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the distal end portion of the ultrasonic endoscope according to the present invention includes an ultrasonic probe and an optical observation for transmitting and receiving an ultrasonic signal on the distal end body connected to the distal end of the insertion portion. And the distal end of the ultrasonic endoscope in which the signal cable connected to the ultrasonic probe passes through the cable passage hole formed in the main body of the distal end portion and is passed through the insertion portion. In the portion, various arrangement holes for arranging other arrangement objects are formed around the cable passage hole of the tip body, and the cable passage hole is adapted to the shape of the portion where the arrangement hole is not formed. In the middle, the cross-sectional shape is changed.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
3 is a plan view of the distal end portion of the ultrasonic endoscope, and FIG. 4 is a IV-IV sectional view thereof. In the front half of the distal end portion main body 1 connected to the distal end of the insertion portion flexible tube, A convex type ultrasonic probe 2 for sector scanning the side of the distal end main body 1 by an ultrasonic signal is disposed.
[0008]
A balloon attachment groove 12 for attaching a balloon (not shown) with a binding member or the like is formed in a flat portion between the front half and the rear half of the tip body 1. .
[0009]
An observation window 3 and an illumination window 4 are arranged on the slope formed in the rear half of the tip body 1. As shown in FIG. 4, the exit end of the illumination light guide 8 is disposed in the back of the illumination window 4, and the object is projected at the object projection position by the objective optical system 5 disposed in the back of the observation window 3. An image sensor 6 is arranged. Reference numeral 7 denotes an imaging signal line for transmitting an imaging signal or the like.
[0010]
In addition, as shown in FIG. 3, the treatment instrument protrusion 9 formed in the rear half of the distal end main body 1 along with the observation window 3 and the illumination window 4 is operated from an operation unit (not shown). A treatment instrument raising piece 14 that swings when the wire 13 is advanced and retracted is disposed.
[0011]
5 and 6 show the rear side of the tip body 1 partially cut away. 5 is a plan cross-sectional view, and FIG. 6 is a side cross-sectional view. A signal cable 15 for transmitting an electrical signal input to and output from the ultrasonic probe 2 is connected from the front half to the rear half. It passes through the inside of the part and is passed through the insertion part flexible tube behind it.
[0012]
The signal cable 15 is inserted and disposed in the cable passage holes 10 a and 10 b formed in the longitudinal direction of the distal end body 1. As shown in FIG. 5, at the side positions of the cable passage holes 10 a and 10 b, there are water passage holes 16 (arrangement holes) for taking in and out deaerated water to and from the balloon (not shown). The tip of the water passage connecting pipe 18 is connected and fixed to the water passage hole 16 from the rear.
[0013]
Further, as shown in FIG. 6, a channel connection tube 21 into which the distal end portion of the treatment instrument insertion channel 20 for guiding the treatment instrument is inserted is disposed above the rear half portion 10b of the cable passage hole. The channel connection tube 21 is inserted and fixed in a hole (arrangement hole) formed in the tip body 1. The channel connection pipe 21 is arranged in an oblique direction, and is arranged so as to approach the cable passage hole 10b as it comes to the rear position.
[0014]
Further, as shown in FIG. 1 illustrating a cross section taken along the line II in FIG. 6, an illumination light guide 8 is provided at a side position of the rear half portion 10b of the cable passage hole (on the side opposite to the water connection pipe 18). In addition, it is inserted and fixed in a hole (arrangement hole) formed in the tip body 1. An alternate long and two short dashes line indicates the position of the channel connection tube 21 at the rearmost end portion of the distal end portion main body 1.
[0015]
The latter half portion 10b of the cable passage hole is not formed in a circular shape which is the original cross-sectional shape of the signal cable 15. First, various arrangements such as the channel connection pipe 21, the water passage connection pipe 18 and the lighting light guide 8 are provided. The arranged arrangement hole is formed in a necessary and sufficient size, and the cross-sectional shape of the rear half portion 10b of the cable passage hole is formed in an irregular shape between a circle and a rectangle in accordance with the remaining space.
[0016]
Further, as shown in FIG. 2 illustrating the II-II cross section in FIG. 6, the front half portion 10 a of the cable passage hole is a portion where the balloon attachment groove 12 is narrowly flattened at a position where it does not interfere with the water passage hole 16. It is formed in a flat oval cross-sectional shape in accordance with the cross-sectional shape.
[0017]
By configuring in this way, the cross-sectional shape of the signal cable 15 connected to the ultrasonic probe 2 is changed in the distal end body 1, and an arrangement hole for passing an arrangement other than the signal cable 15 is necessary and sufficiently large. Can be formed.
[0018]
【The invention's effect】
According to the present invention, the arrangement hole for passing an arrangement other than the signal cable connected to the ultrasonic probe can be formed as thick as possible so as not to create a useless space in the tip body. A necessary and sufficient level of performance as a mirror can be ensured.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view taken along the line II in FIG. 6 of a distal end portion of an ultrasonic endoscope according to an embodiment of the present invention.
2 is a cross-sectional view taken along the line II-II in FIG. 6 of the distal end portion of the ultrasonic endoscope according to the embodiment of the present invention.
FIG. 3 is a plan view of the distal end portion of the ultrasonic endoscope according to the embodiment of the present invention.
4 is a cross-sectional view taken along the line IV-IV in FIG. 3 of the distal end portion of the ultrasonic endoscope according to the embodiment of the present invention.
FIG. 5 is a partial cross-sectional plan view of a distal end portion of an ultrasonic endoscope according to an embodiment of the present invention.
FIG. 6 is a side partial cross-sectional view of the distal end portion of the ultrasonic endoscope according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tip part main body 2 Ultrasonic probe 3 Observation windows 10a and 10b Cable passage hole 15 Signal cable 8 Light guide for illumination (arrangement)
18 Water connection pipe (arrangement)
21 Channel connection pipe (arrangement)

Claims (1)

挿入部の先端に連結された先端部本体の先側半部と後側半部との間に偏平状に括れた括れ部が形成されて、その括れ部の外周にバルーン取付溝が形成され、上記先端部本体の先側半部には超音波信号を発受信走査するための超音波プローブが設けられ、後側半部には上記括れ部に連なる斜面が形成されて、光学観察をするための観察窓と照明窓が上記斜面に設けられ、上記超音波プローブに接続された信号ケーブルが上記先端部本体に形成されたケーブル通過孔を通過して上記挿入部内に引き通された超音波内視鏡の先端部において、
上記先端部本体の上記ケーブル通過孔の周囲には、他の配置物を配置するための各種配置孔が形成されていて、上記ケーブル通過孔は、上記配置孔が形成されていない部分の形状に合わせて途中で断面形状を変化させて形成されて、上記括れ部の内側に位置する上記ケーブル通過孔の前半部分は偏平な長円形の断面形状に形成され、上記括れ部より後方に位置する上記ケーブル通過孔の後半部分は円形と矩形との中間的な異形状に形成されていることを特徴とする超音波内視鏡の先端部。
A constricted portion constricted in a flat shape is formed between the front half and the rear half of the distal end body connected to the distal end of the insertion portion, and a balloon attachment groove is formed on the outer periphery of the constricted portion, An ultrasonic probe for transmitting and receiving ultrasonic signals is provided in the front half of the tip body, and an inclined surface connected to the constricted part is formed in the rear half for optical observation. the observation window and the illumination window provided on the slope, signal cable connected to the ultrasonic probe, was pulled through into the insertion portion through the cable passage hole formed in the distal end portion main body ultrasonic At the tip of the endoscope,
Various arrangement holes for arranging other arrangement objects are formed around the cable passage hole of the tip body, and the cable passage hole has a shape of a portion where the arrangement hole is not formed. In addition, the first half portion of the cable passing hole located inside the constricted portion is formed in a flat oval cross-sectional shape, and the rear half portion is located behind the constricted portion. A distal end portion of an ultrasonic endoscope, characterized in that the latter half portion of the cable passage hole is formed in a different shape between a circle and a rectangle .
JP2001150340A 2001-05-21 2001-05-21 Ultrasound endoscope tip Expired - Fee Related JP3967562B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001150340A JP3967562B2 (en) 2001-05-21 2001-05-21 Ultrasound endoscope tip

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Application Number Priority Date Filing Date Title
JP2001150340A JP3967562B2 (en) 2001-05-21 2001-05-21 Ultrasound endoscope tip

Publications (2)

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JP2002336257A JP2002336257A (en) 2002-11-26
JP3967562B2 true JP3967562B2 (en) 2007-08-29

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Publication number Priority date Publication date Assignee Title
DE112018006969T5 (en) * 2018-01-29 2020-10-15 Fujifilm Corporation ULTRASONIC ENDOSCOPE AND METHOD OF MANUFACTURING THE ULTRASONIC ENDOSCOPE

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