JP4694042B2 - Ultrasound endoscope tip - Google Patents

Ultrasound endoscope tip Download PDF

Info

Publication number
JP4694042B2
JP4694042B2 JP2001172155A JP2001172155A JP4694042B2 JP 4694042 B2 JP4694042 B2 JP 4694042B2 JP 2001172155 A JP2001172155 A JP 2001172155A JP 2001172155 A JP2001172155 A JP 2001172155A JP 4694042 B2 JP4694042 B2 JP 4694042B2
Authority
JP
Japan
Prior art keywords
ultrasonic
distal end
balloon
end portion
probe
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
JP2001172155A
Other languages
Japanese (ja)
Other versions
JP2002360577A (en
Inventor
哲也 樽本
弘幸 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoya Corp
Original Assignee
Hoya Corp
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.)
Filing date
Publication date
Application filed by Hoya Corp filed Critical Hoya Corp
Priority to JP2001172155A priority Critical patent/JP4694042B2/en
Publication of JP2002360577A publication Critical patent/JP2002360577A/en
Application granted granted Critical
Publication of JP4694042B2 publication Critical patent/JP4694042B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Ultra Sonic Daignosis Equipment (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、挿入部の先端に光学観察のための観察窓と超音波プローブとが併設された超音波内視鏡の先端部に関する。
【０００２】
【従来の技術】
図６は従来の超音波内視鏡の先端部を示しており、挿入部１の先端に配置された先端部本体２の先側半部２ａに、側方をセクタスキャンするコンベックスタイプの超音波プローブ３が配置され、その先側半部２ａを囲んで、脱気水等を注入することによる膨らまされるバルーン４が取り付けられている。
【０００３】
先端部本体２の後側半部２ｂに形成された斜面１０には観察窓１１と照明窓１２が並んで配置され、その横に並んで、処置具１００を突出させるための処置具突出口１３が配置されている。１４は処置具起上片である。
【０００４】
【発明が解決しようとする課題】
上述のように構成された超音波内視鏡の先端部において、処置具突出口１３から突出される例えば内視鏡用注射具又はドレナージチューブ等のような処置具１００の先端部分が、曲がり癖によって、図６に示されるように側方に曲がって突出される場合がある。
【０００５】
すると、処置具１００が超音波プローブ３による超音波走査領域Ｕから外れて、処置具１００を超音波断層像中にほとんど捉えることができない状態になってしまい、穿刺処置や留置処置等を安全に行うことができない。
【０００６】
そこで本発明は、処置具突出口から処置具類が側方に曲がって突出された場合でも、処置具突出口から突出した処置具類を超音波走査領域中に捉えて安全に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、挿入部の先端に連結された先端部本体に、光学観察のための観察窓と、超音波信号により先端部本体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と、超音波プローブを囲む状態で膨縮自在なバルーンと、超音波プローブによる超音波走査領域内に後方から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、超音波プローブを、バルーン及び処置具突出口に対して独立して、挿入部の手元側から先端部本体の軸線と同方向の中心軸線の周りに回転させることができるようにしたものである。
【０００８】
【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、超音波内視鏡の挿入部の先端部分を示しており、細長い可撓管状の挿入部１の先端に連結された先端部本体２の先側半部２ａに、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３が配置されている。４は膨縮自在なバルーン、１００は処置具である。
【０００９】
先端部本体２の先側半部２ａは、後側半部２ｂとの境界線２ｃより後側の後側半部２ｂに対して、矢印Ｂで示されるように、先端部本体２の軸線と同方向の中心軸線Ｙの周りに回転自在であり、バルーン４は、先端部本体２の後側半部２ｂ側に取り付けられているので回転しない。
【００１０】
図４は、超音波内視鏡の先端部の平面図であり、ここでは、先端部本体２の先側半部２ａが正面よりある程度側方に回転した状態が示されている。５は、バルーン４を先端部本体２に取り付けているＯリングである。
【００１１】
先端部本体２の後側半部２ｂに斜め前方に向けて形成された斜面１０には、観察窓１１と照明窓１２が並んで配置されており、その横に並んで形成された処置具突出口１３内には、処置具突出口１３から突出される処置具１００の突出方向（ただし、上下方向）を制御するために、起上片操作ワイヤ１５を介して遠隔操作される処置具起上片１４が配置されている。
【００１２】
図１と図２は、先端部本体２の先側半部２ａを回転させるための回転機構を含む超音波内視鏡の先端部の側面断面図と平面部分断面図であり、図１に示されるように、先側半部２ａから後方の挿入部１内に、超音波プローブ３に入出力される信号を伝送する信号ケーブル６が引き通されている。１６は、処置具通路管である。
【００１３】
先端部本体２の後側半部２ｂの先端付近には、例えばかさ歯車等のように回転運動を垂直に向きを変えて伝達するための歯車２０が、回転軸Ｘを中心に回転自在に配置されて、先端部本体２の後側半部２ｂに軸支されている。
【００１４】
そして、挿入部１の基端に連結された図示されていない操作部からの遠隔操作によって押し引き操作されるプローブ回転操作ワイヤ２１が歯車２０に直結されており、プローブ回転操作ワイヤ２１の軸線方向移動によって歯車２０が回転する。
【００１５】
先端部本体２の先側半部２ａと後側半部２ｂとは、先端部本体２の軸線と同方向の中心軸線Ｙの周りに回転自在に連結されており、その回転嵌合面にはシール用のＯリング８が装着されている。
【００１６】
一方、先端部本体２の先側半部２ａの後端面には、歯車２０の歯と噛み合うかさ歯７が形成されている。９は、バルーン４内の位置で先端部本体２の後側半部２ｂの外面に開口する送排水口である。
【００１７】
このような構成により、挿入部１の基端に連結された操作部からプローブ回転操作ワイヤ２１を進退操作することにより歯車２０が回転し、それによって超音波プローブ３が配置された先端部本体２の先側半部２ａが回転して、超音波走査方向が中心軸線Ｙの周りに回転する。
【００１８】
すると、図４に示されるように、先端部本体２の後側半部２ｂ側に配置されている観察窓１１や処置具突出口１３はもちろん、Ｏリング５によって後側半部２ｂ側に取り付けられているバルーン４も回転せず、それらとは独立して超音波プローブ３がバルーン４内で回転する。
【００１９】
したがって、体内に挿入された超音波内視鏡の先端部の姿勢等を何ら変えることなく、超音波走査領域Ｕだけが先端部本体２の軸線と同方向の中心軸線Ｙの周りに回転するので、図４に示されるように、処置具突出口１３から突出する処置具１００の先端部分が側方に曲がっていても、それを超音波走査領域Ｕの都合のよい任意の位置に捉えて超音波断層像として観察することができ、穿刺或いは留置等の処置を安全かつ容易に行うことができる。
【００２０】
なお、本発明は上記実施例に限定されるものではなく、例えば図５に示されるように、送排水口９はバルーン４内に開口していればよいので、先端部本体２の先側半部２ａ側に配置されていても差し支えない。
【００２１】
【発明の効果】
本発明によれば、超音波プローブを、バルーン及び処置具突出口に対して独立して、挿入部の手元側から先端部本体の軸線と同方向の中心軸線の周りに回転させることができるようにしたことにより、処置具突出口から処置具類が側方に曲がって突出された場合でも、体内に挿入された超音波内視鏡の先端部の姿勢等を全く変えることなく、処置具突出口から突出した処置具類を超音波走査領域中の任意の位置に捉えて安全に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側面断面図である。
【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部分断面図である。
【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図である。
【図４】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５】本発明の第２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】従来の超音波内視鏡の先端部の平面図である。
【符号の説明】
１ 挿入部
２ 先端部本体
２ａ 先側半部
２ｂ 後側半部
３ 超音波プローブ
４ バルーン
７ かさ歯
１１ 観察窓
１３ 処置具突出口
２０ 歯車
２１ プローブ回転操作ワイヤ
１００ 処置具
Ｕ 超音波走査領域
Ｘ 回転軸
Ｙ 中心軸線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a distal end portion of an ultrasonic endoscope in which an observation window for optical observation and an ultrasonic probe are provided at the distal end of an insertion portion.
[0002]
[Prior art]
FIG. 6 shows a distal end portion of a conventional ultrasonic endoscope. A convex-type ultrasonic wave that performs sector scanning on the side of the distal half 2a of the distal end main body 2 disposed at the distal end of the insertion portion 1 is shown. A probe 3 is disposed, and a balloon 4 that is inflated by injecting deaerated water or the like is attached around the front half 2a.
[0003]
An observation window 11 and an illumination window 12 are arranged side by side on the inclined surface 10 formed in the rear half 2b of the distal end main body 2, and a treatment instrument projection port 13 for projecting the treatment instrument 100 is arranged side by side. Is arranged. Reference numeral 14 denotes a treatment instrument raising piece.
[0004]
[Problems to be solved by the invention]
At the distal end portion of the ultrasonic endoscope configured as described above, the distal end portion of the treatment instrument 100 such as an endoscope injection tool or a drainage tube that projects from the treatment instrument projection port 13 is bent. May be bent sideways and protruded as shown in FIG.
[0005]
Then, the treatment tool 100 is out of the ultrasonic scanning region U by the ultrasonic probe 3, and the treatment tool 100 can hardly be captured in the ultrasonic tomographic image, so that the puncture treatment, indwelling treatment, and the like can be performed safely. I can't do it.
[0006]
Therefore, the present invention can safely treat a treatment tool protruding from the treatment tool protrusion in the ultrasonic scanning region even when the treatment tool is bent sideways and protrudes from the treatment tool protrusion. An object of the present invention is to provide a distal end portion of an ultrasonic endoscope capable of performing
[0007]
[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 a distal end portion body connected to the distal end of the insertion portion, an observation window for optical observation, and a distal end portion body by ultrasonic signals. Convex type ultrasonic probe for sector scanning of the side of the probe, a balloon that can be expanded and contracted in a state surrounding the ultrasonic probe, and a treatment tool for projecting the treatment tool from behind in the ultrasonic scanning area by the ultrasonic probe At the distal end portion of the ultrasonic endoscope in which the treatment instrument protruding port is arranged, the ultrasonic probe is placed on the same axis as the axis of the distal end body from the proximal side of the insertion portion independently of the balloon and the treatment tool protruding port. It can be rotated around the central axis of the direction.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 3 shows a distal end portion of the insertion portion of the ultrasonic endoscope, and a sector is placed on the side of the distal half 2a of the distal end main body 2 connected to the distal end of the elongated flexible tubular insertion portion 1. A convex type ultrasonic probe 3 for scanning is disposed. 4 is an inflatable balloon, and 100 is a treatment instrument.
[0009]
The front half 2a of the tip main body 2 is arranged with respect to the axis of the tip main body 2 as indicated by an arrow B with respect to the rear half 2b behind the boundary 2c with the rear half 2b. The balloon 4 is rotatable around the central axis Y in the same direction, and the balloon 4 does not rotate because it is attached to the rear half 2b side of the distal end portion main body 2.
[0010]
FIG. 4 is a plan view of the distal end portion of the ultrasonic endoscope. Here, a state in which the front half 2a of the distal end portion body 2 is rotated to some extent from the front is shown. Reference numeral 5 denotes an O-ring that attaches the balloon 4 to the tip body 2.
[0011]
An observation window 11 and an illumination window 12 are arranged side by side on the slope 10 formed obliquely forward in the rear half 2b of the distal end main body 2, and the treatment tool protrusion formed side by side is arranged. In the mouth 13, the treatment tool raising which is remotely operated via the raising piece operation wire 15 is performed in order to control the protruding direction (however, the vertical direction) of the treatment tool 100 protruding from the treatment tool protruding opening 13. A piece 14 is arranged.
[0012]
1 and 2 are a side sectional view and a plane partial sectional view of the distal end portion of the ultrasonic endoscope including a rotation mechanism for rotating the front half portion 2a of the distal end portion main body 2, which are shown in FIG. As shown, a signal cable 6 for transmitting a signal input / output to / from the ultrasonic probe 3 is passed from the front half 2a into the insertion portion 1 at the rear. Reference numeral 16 denotes a treatment instrument passage tube.
[0013]
In the vicinity of the tip of the rear half 2b of the tip body 2, a gear 20 such as a bevel gear for transmitting the rotational motion in a vertical direction is rotatably arranged around the rotation axis X. Thus, it is pivotally supported by the rear half 2 b of the tip body 2.
[0014]
A probe rotation operation wire 21 that is pushed and pulled by a remote operation from an operation unit (not shown) connected to the proximal end of the insertion unit 1 is directly connected to the gear 20, and the axial direction of the probe rotation operation wire 21 is The gear 20 is rotated by the movement.
[0015]
The front half 2a and the rear half 2b of the tip body 2 are rotatably connected around a central axis Y in the same direction as the axis of the tip body 2, and the rotation fitting surface includes An O-ring 8 for sealing is attached.
[0016]
On the other hand, bevel teeth 7 that mesh with the teeth of the gear 20 are formed on the rear end surface of the front half 2 a of the tip body 2. Reference numeral 9 denotes a water supply / drainage port that opens to the outer surface of the rear half 2 b of the distal end main body 2 at a position in the balloon 4.
[0017]
With such a configuration, when the probe rotating operation wire 21 is advanced or retracted from the operation unit connected to the proximal end of the insertion unit 1, the gear 20 is rotated, whereby the distal end body 2 on which the ultrasonic probe 3 is disposed. The front half part 2a of the head rotates and the ultrasonic scanning direction rotates around the central axis Y.
[0018]
Then, as shown in FIG. 4, the observation window 11 and the treatment instrument protrusion 13 arranged on the rear half 2 b side of the distal end body 2 are attached to the rear half 2 b side by the O-ring 5. The balloon 4 is not rotated, and the ultrasonic probe 3 is rotated in the balloon 4 independently of them.
[0019]
Accordingly, only the ultrasonic scanning region U rotates around the central axis Y in the same direction as the axis of the distal end body 2 without changing the posture or the like of the distal end of the ultrasonic endoscope inserted into the body. As shown in FIG. 4, even if the distal end portion of the treatment instrument 100 protruding from the treatment instrument protrusion 13 is bent to the side, it is superposed by capturing it at any convenient position in the ultrasonic scanning region U. It can be observed as a sonic tomogram, and treatment such as puncture or indwelling can be performed safely and easily.
[0020]
The present invention is not limited to the above-described embodiment. For example, as shown in FIG. 5, the water supply / drainage port 9 only needs to be opened in the balloon 4. Even if it arrange | positions at the part 2a side, it does not interfere.
[0021]
【The invention's effect】
According to the present invention, the ultrasonic probe can be rotated around the central axis in the same direction as the axis of the distal end body from the proximal side of the insertion portion independently of the balloon and the treatment instrument protrusion. As a result, even if the treatment tool is bent sideways and protrudes from the treatment tool protrusion port, the treatment tool protrudes without changing the posture of the tip of the ultrasonic endoscope inserted into the body at all. It is possible to safely perform treatment by grasping the treatment tool protruding from the mouth at an arbitrary position in the ultrasonic scanning region.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a distal end portion of an ultrasonic endoscope according to a first embodiment of the present invention.
FIG. 2 is a partial 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 view 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 the distal end portion of the ultrasonic endoscope according to the first embodiment of the present invention.
FIG. 5 is a plan partial sectional view of a distal end portion of an ultrasonic endoscope according to a second embodiment of the present invention.
FIG. 6 is a plan view of a distal end portion of a conventional ultrasonic endoscope.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insertion part 2 Front-end | tip part main body 2a Front side half part 2b Rear side half part 3 Ultrasonic probe 4 Balloon 7 Cave tooth 11 Observation window 13 Treatment tool protrusion 20 Gear 21 Probe rotation operation wire 100 Treatment tool U Ultrasonic scanning area X Rotation axis Y Center axis

Claims (1)

挿入部の先端に連結された先端部本体に、光学観察のための観察窓と、超音波信号により上記先端部本体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と、上記超音波プローブを囲む状態で膨縮自在なバルーンと、上記超音波プローブによる超音波走査領域内に後方から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、
上記超音波プローブを、上記バルーン及び上記処置具突出口に対して独立して、上記挿入部の手元側から上記先端部本体の軸線と同方向の中心軸線の周りに回転させることができるようにして、上記挿入部の手元側から、上記バルーンを回転させることなく、上記バルーン内で上記超音波プローブを回転させてその向きを変えることができるようにしたことを特徴とする超音波内視鏡の先端部。An observation window for optical observation, a convex type ultrasonic probe for sector-scanning the side of the distal end body by an ultrasonic signal, and an ultrasonic wave At the distal end portion of the ultrasonic endoscope in which a balloon that is inflatable / contractible in a state of surrounding the probe and a treatment instrument projecting port for projecting the treatment instrument from behind in the ultrasonic scanning region by the ultrasonic probe are arranged ,
The ultrasonic probe can be rotated around the central axis in the same direction as the axis of the distal end portion main body from the proximal side of the insertion portion independently of the balloon and the treatment instrument projection port. An ultrasonic endoscope characterized in that the direction of the ultrasonic probe can be changed by rotating the ultrasonic probe in the balloon without rotating the balloon from the proximal side of the insertion portion. The tip of the.
JP2001172155A 2001-06-07 2001-06-07 Ultrasound endoscope tip Expired - Fee Related JP4694042B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001172155A JP4694042B2 (en) 2001-06-07 2001-06-07 Ultrasound endoscope tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001172155A JP4694042B2 (en) 2001-06-07 2001-06-07 Ultrasound endoscope tip

Publications (2)

Publication Number Publication Date
JP2002360577A JP2002360577A (en) 2002-12-17
JP4694042B2 true JP4694042B2 (en) 2011-06-01

Family

ID=19013823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001172155A Expired - Fee Related JP4694042B2 (en) 2001-06-07 2001-06-07 Ultrasound endoscope tip

Country Status (1)

Country Link
JP (1) JP4694042B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5709317B2 (en) * 2012-06-07 2015-04-30 富士フイルム株式会社 Ultrasound endoscope
JP6594151B2 (en) * 2015-10-08 2019-10-23 Ｈｏｙａ株式会社 Ultrasound endoscope
CN105748134A (en) * 2016-02-22 2016-07-13 杨柏森 Visual integral gun for water sac midwifery

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200206U (en) * 1981-06-15 1982-12-20
JPH08126642A (en) * 1994-11-01 1996-05-21 Asahi Optical Co Ltd Apex part of ultrasonic endoscope
JP2000139926A (en) * 1998-11-17 2000-05-23 Olympus Optical Co Ltd Ultrasonic probe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200206U (en) * 1981-06-15 1982-12-20
JPH08126642A (en) * 1994-11-01 1996-05-21 Asahi Optical Co Ltd Apex part of ultrasonic endoscope
JP2000139926A (en) * 1998-11-17 2000-05-23 Olympus Optical Co Ltd Ultrasonic probe

Also Published As

Publication number Publication date
JP2002360577A (en) 2002-12-17

Similar Documents

Publication Publication Date Title
JP3221824B2 (en) Endoscope with bending section protection mechanism
US11622753B2 (en) Fully integrated endoscope with biopsy capabilities and methods of use
JP3331177B2 (en) Sector scan ultrasound probe
JPH07227394A (en) Ultrasonic diagnostic and curing system
JP5285649B2 (en) Endoscope hood
JP6723942B2 (en) Endoscope
JP2018134308A (en) Endoscope
JP6081424B2 (en) Ultrasound endoscope hood and ultrasound endoscope
JP4694042B2 (en) Ultrasound endoscope tip
JPH08131442A (en) Ultrasonic endoscope
JP5006591B2 (en) Ultrasound endoscope
JP2000126122A (en) Intracoelom diagnostic instrument
JP4142403B2 (en) Ultrasound endoscope tip
JP3438917B2 (en) Endoscope
JP4153731B2 (en) Electronic scanning ultrasound endoscope
JP3771724B2 (en) Treatment ultrasound endoscope
JP4179659B2 (en) Ultrasonic probe
JP2000185042A (en) Tip end of ultrasonic endoscope for treatment
JP3068691B2 (en) Endoscope tip
JP2004174157A (en) Fluid jet device of endoscope
JP4302292B2 (en) Ultrasound endoscope
JP3931273B2 (en) Endoscope cover
JP6230734B2 (en) Ultrasound endoscope hood and ultrasound endoscope
JP3722667B2 (en) Ultrasound endoscope
WO2021193402A1 (en) Ultrasonic endoscope

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080313

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20080430

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20101022

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101028

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101210

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110202

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110223

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140304

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees