JP4521203B2 - Endoscope curvature - Google Patents

Endoscope curvature Download PDF

Info

Publication number
JP4521203B2
JP4521203B2 JP2004049844A JP2004049844A JP4521203B2 JP 4521203 B2 JP4521203 B2 JP 4521203B2 JP 2004049844 A JP2004049844 A JP 2004049844A JP 2004049844 A JP2004049844 A JP 2004049844A JP 4521203 B2 JP4521203 B2 JP 4521203B2
Authority
JP
Japan
Prior art keywords
wire
angle rubber
endoscope
wire guide
rubber
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
JP2004049844A
Other languages
Japanese (ja)
Other versions
JP2005237556A (en
Inventor
昌行 大谷津
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.)
Fujifilm Corp
Original Assignee
Fujifilm 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 Fujifilm Corp filed Critical Fujifilm Corp
Priority to JP2004049844A priority Critical patent/JP4521203B2/en
Publication of JP2005237556A publication Critical patent/JP2005237556A/en
Application granted granted Critical
Publication of JP4521203B2 publication Critical patent/JP4521203B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)

Description

本発明は、内視鏡の湾曲部に関するものである。   The present invention relates to a bending portion of an endoscope.

一般的な内視鏡の湾曲部は、観察用レンズなどを備えた先端硬質部の後方に連続して形成され、この湾曲部を構成する複数の節輪同士を回動自在に連結し、節輪をワイヤーで操作することにより湾曲部を湾曲させていた。この節輪外周には金属の細線を筒状に編んだもの(アングルネット)をかぶせ、さらにその上にアングルゴムを被覆していた。そして、節輪(湾曲部材)の替りに超弾性合金を使用したものも知られている(特許文献1参照)。   A curved portion of a general endoscope is formed continuously behind a hard tip portion provided with an observation lens and the like, and a plurality of node rings constituting the curved portion are rotatably connected to each other. The bending portion was bent by operating the wheel with a wire. The outer circumference of this node ring was covered with a metal wire knitted into a tubular shape (angle net), and angle rubber was further coated thereon. And what used the superelastic alloy instead of the node ring (curved member) is also known (refer patent document 1).

上述したような内視鏡は、胃などに挿入される口径の太いものであり、血管、胆管、膵管、尿管などに挿入するための極細径内視鏡の湾曲部には適用が困難なものであった。
特開昭58−159719号公報(第2頁、第2図)
The endoscope as described above has a large diameter to be inserted into the stomach or the like, and is difficult to apply to the curved portion of the ultra-thin endoscope for insertion into blood vessels, bile ducts, pancreatic ducts, ureters, and the like. It was a thing.
JP 58-159719 (2nd page, Fig. 2)

上述した節輪などの湾曲部材やアングルネットを使用すると、体腔内へ挿入される湾曲部の太さを細くすること、例えば6〜7mm以下とすることはきわめて困難となり、血管などの挿入用としては、患者が苦痛を感じ、不適当なものであった。   When using a bending member such as a node ring or an angle net as described above, it is extremely difficult to reduce the thickness of the bending portion inserted into the body cavity, for example, 6 to 7 mm or less. The patient felt distress and was inappropriate.

そこで、本発明は、細径化を図り、患者の苦痛を低減することのできる内視鏡の湾曲部を提供することを目的とする。   Then, an object of this invention is to provide the curved part of the endoscope which can achieve diameter reduction and reduce a patient's pain.

上述の目的を達成するため、本発明は、内部空間の水密性を確保した内視鏡の先端硬質部の後方に連続して形成される湾曲部であって、水密部を確保するために湾曲部の外皮を構成し可撓性を有する筒状のアングルゴムの長手方向に沿ってワイヤーを取付け、このワイヤーを操作部のノブで操作してアングルゴムを湾曲させるように構成し、前記アングルゴムは外気との水密性を有し、なおかつ内周面の長手方向に沿ってワイヤー案内部を複数形成させ、最先端のワイヤー案内部にワイヤーを固定し、その他のワイヤー案内部ではワイヤーの通過、移動を可能としたものである。 In order to achieve the above-described object, the present invention is a curved portion formed continuously behind the distal end hard portion of the endoscope that secures the water tightness of the internal space, and is curved to secure the water tight portion. A wire is attached along the longitudinal direction of a flexible cylindrical angle rubber that constitutes the outer skin of the section, and the angle rubber is configured to bend by operating the wire with a knob of the operation section. Has water tightness with the outside air, and also forms a plurality of wire guide portions along the longitudinal direction of the inner peripheral surface, fixes the wires to the most advanced wire guide portions, and passes the wires in the other wire guide portions, It is possible to move .

本発明によれば、内部空間の水密性を確保した内視鏡の先端硬質部の後方に連続して形成される湾曲部であって、水密部を確保するために湾曲部の外皮を構成し可撓性を有する筒状のアングルゴムの長手方向に沿ってワイヤーを取付け、このワイヤーを操作部のノブで操作してアングルゴムを湾曲させるように構成し、前記アングルゴムは外気との水密性を有し、なおかつ内周面の長手方向に沿ってワイヤー案内部を複数形成させ、最先端のワイヤー案内部にワイヤーを固定し、その他のワイヤー案内部ではワイヤーの通過、移動を可能としたので、アングルゴムの内部に従来使用していた湾曲部材やアングルネットが不要となり、細径化を図ることができ、挿入に伴う患者の苦痛を低減することができる。 According to the present invention, the curved portion is formed continuously behind the distal end hard portion of the endoscope that secures the water tightness of the internal space, and the outer skin of the curved portion is configured to secure the water tight portion. A wire is attached along the longitudinal direction of a flexible cylindrical angle rubber, and this angle rubber is configured to bend the angle rubber by operating the knob with the knob of the operation unit. The angle rubber is watertight with the outside air. In addition, a plurality of wire guide portions are formed along the longitudinal direction of the inner peripheral surface, the wires are fixed to the most advanced wire guide portions, and the wires can be passed and moved in other wire guide portions . In addition, the curved member and the angle net that have been conventionally used are not required inside the angle rubber, the diameter can be reduced, and the patient's pain associated with insertion can be reduced.

以下に、この発明の実施形態を図面を参照にして説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図1に示す上半分を断面にした図では、内視鏡の先端硬質部1の後方に連続して湾曲部2を形成してあり、湾曲部2の後方には連続して蛇管部3を形成してある。この蛇管部3には図示しないが操作部と接眼部が連続して設けられている。先端硬質部1内には観察用レンズ及び照明用窓などが形成してある。前記湾曲部2の外皮は、可撓性を有する筒状のアングルゴム4で構成してある。このアングルゴム4は、天然ゴムや合成ゴムなどにより形成されている。このアングルゴム4の内周面には、長手方向に沿って、所定間隔をおいて、複数のワイヤー案内部5を同一素材で形成してある。そして、これら複数のワイヤー案内部5にワイヤー6を挿通し、先端側のワイヤー案内部5にこのワイヤー6の先端を固定し、ワイヤー6の基端側は図示しない操作部のノブに取付けである。そして、操作部のノブを操作することによりワイヤー6を引いたり戻したりしてアングルゴム4を湾曲させることができるように構成してある。ワイヤー6が固定されないワイヤー案内部5に対してワイヤー6が挿入され、通過、移動できるようになっている。   In the figure which made the upper half shown in FIG. 1 into a cross section, a curved portion 2 is formed continuously behind the distal end hard portion 1 of the endoscope, and a serpentine tube portion 3 is continuously formed behind the curved portion 2. It is formed. Although not shown, the serpentine tube portion 3 is provided with an operation portion and an eyepiece portion continuously. An observation lens, an illumination window, and the like are formed in the distal end hard portion 1. The outer skin of the bending portion 2 is composed of a cylindrical angle rubber 4 having flexibility. The angle rubber 4 is made of natural rubber or synthetic rubber. A plurality of wire guide portions 5 are formed of the same material on the inner peripheral surface of the angle rubber 4 at predetermined intervals along the longitudinal direction. Then, the wire 6 is inserted into the plurality of wire guides 5, the tip of the wire 6 is fixed to the wire guide 5 on the distal end side, and the proximal end side of the wire 6 is attached to the knob of the operation unit (not shown). . The angle rubber 4 can be bent by pulling or returning the wire 6 by operating the knob of the operation unit. The wire 6 is inserted into the wire guide portion 5 to which the wire 6 is not fixed, and can pass and move.

図2は図1のA−A線断面を示し、この実施形態においてはアングルゴム4の内周面4A内で少なくとも対向する長手方向の2つの列にワイヤー案内部5を形成してある。場合によっては3列ないしは4列のワイヤー案内部5を形成することもできる。図2に示すように上下2列にワイヤー案内部5を形成し、これらのワイヤー案内部5に2本のワイヤー6を挿通したとき、アングルゴム4の内周面4A内の空間は比較的広くすることができ、この空間に光学繊維束を配設したり、流体給排通路を形成したりすることができる。このアングルゴム4の外径は7mm以下が好ましく、より好ましくは3〜5mmの範囲内であって、アングルゴム4の肉厚を外径の1%以内とすることが好ましい。   2 shows a cross section taken along line AA of FIG. 1, and in this embodiment, the wire guide portions 5 are formed in at least two opposing longitudinal rows in the inner peripheral surface 4A of the angle rubber 4. FIG. In some cases, three or four rows of wire guide portions 5 can be formed. As shown in FIG. 2, when the wire guide portions 5 are formed in two upper and lower rows, and two wires 6 are inserted through these wire guide portions 5, the space in the inner peripheral surface 4A of the angle rubber 4 is relatively wide. The optical fiber bundle can be disposed in this space, and a fluid supply / discharge passage can be formed. The outer diameter of the angle rubber 4 is preferably 7 mm or less, more preferably in the range of 3 to 5 mm, and the thickness of the angle rubber 4 is preferably within 1% of the outer diameter.

図3は、アングルゴム4の肉厚をワイヤー6の太さよりも厚くし、ワイヤー6をアングルゴム4の肉厚内に挿入した実施例を示すものであり、ワイヤー6の先端側はアングルゴム4の先端側で固定されており、それ以外の個所においてワイヤー6はアングルゴム4内を移動するようになっている。このような実施形態の場合、複数に分断されたワイヤー案内部5の替りにこのワイヤー6を挿通する個所の肉厚のみを厚くしてワイヤー6を挿通しておくこともできる。すなわち、図1において複数のワイヤー案内部5が一体となったゴムの突条を形成し、この突条の内部にトンネルが形成された状態となる。ワイヤー6の先端側の固定は、図4に示すように、ワイヤー6が挿通される個所のアングルゴム4の厚さを他の部分よりも厚くし、この厚み部分の先端に固定してある。   FIG. 3 shows an embodiment in which the thickness of the angle rubber 4 is made thicker than the thickness of the wire 6 and the wire 6 is inserted into the thickness of the angle rubber 4. The wire 6 moves in the angle rubber 4 at other points. In the case of such an embodiment, instead of the wire guide portion 5 divided into a plurality of portions, only the thickness of the portion through which the wire 6 is inserted can be increased and the wire 6 can be inserted. That is, in FIG. 1, a rubber ridge formed by integrating a plurality of wire guide portions 5 is formed, and a tunnel is formed inside the ridge. As shown in FIG. 4, the wire 6 is fixed at the distal end of the thick portion by making the angle rubber 4 where the wire 6 is inserted thicker than other portions.

図5の実施形態では、ワイヤー案内部5をアングルゴム4の外周に形成した例を示し、図1に示すように複数のワイヤー案内部5であってもよいし、図4に示すようにワイヤー6が挿通される個所だけのアングルゴム4の部分の肉厚を厚くしてもよい。   In the embodiment of FIG. 5, an example in which the wire guide portion 5 is formed on the outer periphery of the angle rubber 4 is shown. The wire guide portion 5 may be a plurality of wire guide portions 5 as shown in FIG. 1, or a wire as shown in FIG. 4. The thickness of the portion of the angle rubber 4 only where the 6 is inserted may be increased.

アングルゴム4としては、その用途によって材質を変えることができるが、体腔内へ挿入するためフッ素樹脂やシリコン樹脂が好適に使用される。また、先端硬質部1を一方向にだけ湾曲させるだけであるならば、ワイヤー6を1本だけアングルゴム4に挿通したものであってもよい。また、図1や図4及び図5に示すワイヤー案内部5に長手方向に沿ったスリットを形成しておいて、このスリットを拡開してワイヤー6を挿通するようにすることもできる。   Although the material of the angle rubber 4 can be changed depending on its use, a fluororesin or a silicone resin is preferably used for insertion into the body cavity. Further, if only the distal end hard portion 1 is bent in only one direction, only one wire 6 may be inserted through the angle rubber 4. Further, a slit along the longitudinal direction may be formed in the wire guide portion 5 shown in FIGS. 1, 4, and 5, and the wire 6 may be inserted by expanding the slit.

図6は、アングルゴム4の製造例を説明する図であり、ゴムプレート40にワイヤー案内部5を一体に成形しておき、その後にゴムプレート40を丸めて両側を接着してアングルゴム4にする。   FIG. 6 is a diagram for explaining an example of manufacturing the angle rubber 4. The wire guide portion 5 is formed integrally with the rubber plate 40, and then the rubber plate 40 is rolled and bonded on both sides to form the angle rubber 4. To do.

図7及び図8は、別の製造法を示し、円筒状のアングルゴム4に複数の窓41を形成しておき、これらの窓41にワイヤー案内部5を備えたピース50を貼り付けるようにしたものである。   7 and 8 show another manufacturing method, in which a plurality of windows 41 are formed in the cylindrical angle rubber 4, and a piece 50 having the wire guide portion 5 is attached to these windows 41. It is a thing.

この発明の好適な実施形態を示す上半分を断面にした側面図。The side view which made the upper half a section showing a suitable embodiment of this invention. 図1のA−A線断面図。AA sectional view taken on the line AA of FIG. 他の実施形態を示す断面図。Sectional drawing which shows other embodiment. 図3の先端部側を示す側断面図。FIG. 4 is a side cross-sectional view showing the tip side of FIG. 3. さらに他の実施形態を示す断面図。Sectional drawing which shows other embodiment. アングルゴムの製造例を説明する図。The figure explaining the manufacture example of an angle rubber. アングルゴムとワイヤー案内部とを別個に製造する例を説明する図。The figure explaining the example which manufactures an angle rubber and a wire guide part separately. 図7の製造法により製造されたものの断面図。Sectional drawing of what was manufactured by the manufacturing method of FIG.

符号の説明Explanation of symbols

1 先端硬質部
2 湾曲部
4 アングルゴム
4A アングルゴムの内周面
5 ワイヤー案内部
6 ワイヤー
DESCRIPTION OF SYMBOLS 1 Hard end part 2 Curved part 4 Angle rubber 4A Inner peripheral surface of angle rubber 5 Wire guide part 6 Wire

Claims (3)

内部空間の水密性を確保した内視鏡の先端硬質部の後方に連続して形成される湾曲部であって、
水密部を確保するために湾曲部の外皮を構成し可撓性を有する筒状のアングルゴムの長手方向に沿ってワイヤーを取付け、
このワイヤーを操作部のノブで操作してアングルゴムを湾曲させるように構成し、
前記アングルゴムは外気との水密性を有し、なおかつ内周面の長手方向に沿ってワイヤー案内部を複数形成させ、最先端のワイヤー案内部にワイヤーを固定し、その他のワイヤー案内部ではワイヤーの通過、移動を可能としたことを特徴とする内視鏡の湾曲部。
A curved portion formed continuously behind the distal end hard portion of the endoscope that secures the water tightness of the internal space,
In order to secure the watertight part, the outer skin of the curved part is configured and the wire is attached along the longitudinal direction of the flexible tubular angle rubber,
Configure this wire to bend the angle rubber by operating the knob of the operation part ,
The angle rubber has water tightness with the outside air, and a plurality of wire guide portions are formed along the longitudinal direction of the inner peripheral surface, and the wire is fixed to the most advanced wire guide portion. A bending portion of an endoscope characterized by enabling passage and movement of the endoscope.
前記ワイヤー案内部はアングルゴムの内周面内で少なくとも長手方向の2つの列に形成されていることを特徴とする請求項に記載の内視鏡の湾曲部。 The bending portion of the endoscope according to claim 1 , wherein the wire guide portions are formed in at least two rows in the longitudinal direction within the inner peripheral surface of the angle rubber. 前記アングルゴムの外径を3mm〜5mmの範囲内、肉厚を外径の1%以内としたことを特徴とする請求項1または2に記載の内視鏡の湾曲部。 The bending portion of the endoscope according to claim 1 or 2 , wherein an outer diameter of the angle rubber is in a range of 3 mm to 5 mm and a thickness is within 1% of the outer diameter.
JP2004049844A 2004-02-25 2004-02-25 Endoscope curvature Expired - Fee Related JP4521203B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004049844A JP4521203B2 (en) 2004-02-25 2004-02-25 Endoscope curvature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004049844A JP4521203B2 (en) 2004-02-25 2004-02-25 Endoscope curvature

Publications (2)

Publication Number Publication Date
JP2005237556A JP2005237556A (en) 2005-09-08
JP4521203B2 true JP4521203B2 (en) 2010-08-11

Family

ID=35019915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004049844A Expired - Fee Related JP4521203B2 (en) 2004-02-25 2004-02-25 Endoscope curvature

Country Status (1)

Country Link
JP (1) JP4521203B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017078292A1 (en) * 2015-11-02 2017-05-11 전북대학교병원 Urethral catheter having folding part

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007196252A (en) * 2006-01-25 2007-08-09 Honda Motor Co Ltd Welding torch
CN115415640A (en) * 2022-09-20 2022-12-02 东南大学 Soft device for electric arc additive repair under space constraint condition

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53139390A (en) * 1977-05-09 1978-12-05 Olympus Optical Co Medical tube
JPH0194820A (en) * 1987-10-08 1989-04-13 Olympus Optical Co Ltd Endoscope
JPH02206420A (en) * 1989-02-06 1990-08-16 Fuji Photo Optical Co Ltd Angle apparatus for endoscope
JPH06285010A (en) * 1993-04-07 1994-10-11 Toshiba Corp Endoscope device
JPH0894941A (en) * 1994-09-27 1996-04-12 Asahi Optical Co Ltd Curving part of endoscope
JPH08160315A (en) * 1994-12-05 1996-06-21 Asahi Optical Co Ltd Curving part of endoscope
JPH09266881A (en) * 1996-04-02 1997-10-14 Terumo Corp Catheter tube
JP2003508161A (en) * 1999-09-03 2003-03-04 エイ−メド システムズ, インコーポレイテッド Guideable intravascular blood pump and related methods

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53139390A (en) * 1977-05-09 1978-12-05 Olympus Optical Co Medical tube
JPH0194820A (en) * 1987-10-08 1989-04-13 Olympus Optical Co Ltd Endoscope
JPH02206420A (en) * 1989-02-06 1990-08-16 Fuji Photo Optical Co Ltd Angle apparatus for endoscope
JPH06285010A (en) * 1993-04-07 1994-10-11 Toshiba Corp Endoscope device
JPH0894941A (en) * 1994-09-27 1996-04-12 Asahi Optical Co Ltd Curving part of endoscope
JPH08160315A (en) * 1994-12-05 1996-06-21 Asahi Optical Co Ltd Curving part of endoscope
JPH09266881A (en) * 1996-04-02 1997-10-14 Terumo Corp Catheter tube
JP2003508161A (en) * 1999-09-03 2003-03-04 エイ−メド システムズ, インコーポレイテッド Guideable intravascular blood pump and related methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017078292A1 (en) * 2015-11-02 2017-05-11 전북대학교병원 Urethral catheter having folding part

Also Published As

Publication number Publication date
JP2005237556A (en) 2005-09-08

Similar Documents

Publication Publication Date Title
JP5885889B2 (en) Endoscope
US7311659B2 (en) Endoscope shaft
EP3434309A1 (en) Catheter
JP5897237B1 (en) Endoscope
EP3228235A1 (en) Flexible tube and insertion device
JP4827599B2 (en) Endoscope treatment instrument insertion channel
JP4521203B2 (en) Endoscope curvature
JP4412785B2 (en) Endoscope flexible tube
JP3814053B2 (en) Endoscope bending device
JPH03141920A (en) Flexible tube for endoscope and manufacture of flexible tube
JPS625121Y2 (en)
JPH0550287B2 (en)
JPH0546723Y2 (en)
JP4017736B2 (en) Endoscope insertion part
JP2007075168A (en) Insertion section flexible tube of baby scope
JP4394478B2 (en) Endoscope curvature
JP2005261513A (en) Insertion part of flexible endoscope
JPS6324886Y2 (en)
JP3992822B2 (en) Endoscope insertion part
JPS6038961Y2 (en) Flexible tube for endoscope
JPH05300872A (en) Flexible pipe for endoscope
JP2005230135A (en) Flexible tube for endoscope
JP4842615B2 (en) Catheter reinforcement
JPS61162929A (en) Endoscope
JPH0434801Y2 (en)

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070109

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20090813

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091117

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091201

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100118

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100311

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100413

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: 20100511

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: 20100524

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

Free format text: PAYMENT UNTIL: 20130528

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

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

Free format text: PAYMENT UNTIL: 20140528

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees