JP2002177197A - Distal end of endoscope - Google Patents

Distal end of endoscope

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Publication number
JP2002177197A
JP2002177197A JP2000379908A JP2000379908A JP2002177197A JP 2002177197 A JP2002177197 A JP 2002177197A JP 2000379908 A JP2000379908 A JP 2000379908A JP 2000379908 A JP2000379908 A JP 2000379908A JP 2002177197 A JP2002177197 A JP 2002177197A
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JP
Japan
Prior art keywords
distal end
insertion portion
endoscope
light emitting
portion
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.)
Granted
Application number
JP2000379908A
Other languages
Japanese (ja)
Other versions
JP4786790B2 (en
Inventor
Yoshihiro Obata
Hiroshi Sano
浩 佐野
佳寛 小幡
Original Assignee
Asahi Optical Co Ltd
旭光学工業株式会社
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Publication date
Application filed by Asahi Optical Co Ltd, 旭光学工業株式会社 filed Critical Asahi Optical Co Ltd
Priority to JP2000379908A priority Critical patent/JP4786790B2/en
Publication of JP2002177197A publication Critical patent/JP2002177197A/en
Application granted granted Critical
Publication of JP4786790B2 publication Critical patent/JP4786790B2/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/06Instruments 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 with illuminating arrangements
    • A61B1/0661Endoscope light sources
    • A61B1/0676Endoscope light sources at distal tip of an endoscope
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/06Instruments 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 with illuminating arrangements
    • A61B1/0661Endoscope light sources
    • A61B1/0684Endoscope light sources using light emitting diodes [LED]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/12Instruments 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 with cooling or rinsing arrangements
    • A61B1/121Instruments 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 with cooling or rinsing arrangements provided with means for cleaning post-use
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/12Instruments 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 with cooling or rinsing arrangements
    • A61B1/128Instruments 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 with cooling or rinsing arrangements provided with means for regulating temperature
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2407Optical details
    • G02B23/2461Illumination
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2476Non-optical details, e.g. housings, mountings, supports

Abstract

PROBLEM TO BE SOLVED: To provide a distal end of an endoscope which efficiently cools a light emitting diode built in the distal end of an insertion portion as an illumina tion light source without making the insertion portion greater in size.
SOLUTION: A highly heat transferable member 17 having good thermal conductivity is arranged to enclose the light emitting diode 20 and a fluid path 18 in which a liquid blown against the surface of an observation window 11 disposed at the distal end of the insertion portion 1 passes is formed in the highly heat transferable member 17.
COPYRIGHT: (C)2002,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】この発明は、照明光源として発光ダイオードが挿入部の先端に内蔵された内視鏡の先端部に関する。 TECHNICAL FIELD The present invention relates to the tip portion of the endoscope light emitting diodes are incorporated in the distal end of the insertion portion as an illumination light source.

【0002】 [0002]

【従来の技術】内視鏡においては、挿入部外に配置された光源ランプから放射された光を、挿入部内に挿通されたライトガイドファイババンドルによって伝達する構成が一般的であるが、照明光源として挿入部の先端に発光ダイオードを内蔵させて、装置の簡素化を図ったものがある。 BACKGROUND OF THE INVENTION endoscope, light emitted from the light source lamp disposed in the insertion portion outside, but configured to transmit by inserted through the light guide fiber bundle within the insertion portion is generally, the illumination light source the distal end of the insertion portion by incorporating a light-emitting diode as are those achieves a simplified apparatus.

【0003】 [0003]

【発明が解決しようとする課題】しかし、発光ダイオードが内視鏡の挿入部内という狭くて放熱性のよくない環境下で連続点灯されると、発光ダイオードの温度が上昇し、その結果として、発光ダイオードの発光効率が低下して暗くなったり寿命が著しく短くなってしまう問題が生じる。 [SUMMARY OF THE INVENTION] However, when continuous is turned in an environment poor in heat radiation property narrow that the endoscope insertion portion is a light emitting diode, the temperature of the light emitting diode is increased, as a result, emission luminous efficiency becomes significantly shorter service life or dark decreases problems diode arises.

【0004】そこで、例えば挿入部外から冷却用の空気又は水等を循環させて発光ダイオードを冷却することが考えられるが、発光ダイオードを冷却するための配管を挿入部内に挿通配置すると、挿入部の外径サイズが太くなって、内視鏡検査を受ける人に与える苦痛を増大させてしまう。 [0004] Therefore, for example, it is conceivable to cool the air or water or the like is circulated emitting diode for cooling the insert outer, when inserted and arranged in the insertion portion piping for cooling the light emitting diodes, the insertion portion OD becomes thicker, and thus increases the pain to the person receiving the endoscopy.

【0005】そこで本発明は、照明光源として挿入部の先端に内蔵された発光ダイオードを、内視鏡の挿入部を太くすることなく効果的に冷却することができる内視鏡の先端部を提供することを目的とする。 [0005] The present invention provides a front end portion of an endoscope light-emitting diode built in the distal end of the insertion portion as an illumination light source, it is possible to effectively cool without thickening the insertion portion of the endoscope an object of the present invention is to.

【0006】 [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、本発明の内視鏡の先端部は、挿入部の先端に設けられた照明窓内に発光ダイオードを配置して、発光ダイオードから放射される光により被写体を照明するようにした内視鏡の先端部において、発光ダイオードを囲んで熱伝導性のよい高伝熱部材を配置すると共に、挿入部の先端に設けられた観察窓の表面に向かって吹き付けられる流体が通過する流体通過路を、高伝熱部材に形成したものである。 To achieve the above object, according to an aspect of the distal end portion of the endoscope of the present invention, by placing the light-emitting diode in the illumination window provided at a distal end of the insertion portion, the light emitting diode at the tip of the endoscope so as to illuminate the object with light emitted, emission with enclosing placing good thermal conductivity Takaden heat member diodes, the observation window provided at a distal end of the insertion portion a fluid passage for fluid to be sprayed towards the surface to pass through, and is formed on Koden'netsu member.

【0007】なお、高伝熱部材が挿入部の先端部分の外表面に露出しないように、挿入部の先端部分の外表面を熱伝導性の悪い部材によって形成すれば、高伝熱部材の温度上昇に起因する体内粘膜面の火傷等が発生しない。 [0007] Note that as Koden'netsu member is not exposed on the outer surface of the tip portion of the insertion portion, the outer surface of the tip portion of the insertion portion if formed by a low thermal conductivity member, the temperature of Koden'netsu member burns, etc. in the body the mucosal surface due to the rise does not occur.

【0008】 [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。 DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to the drawings illustrating the embodiment of the present invention. 図2は内視鏡の全体構成を示しており、可撓管状の挿入部1の先端に対物光学系等が内蔵されていて、観察対象となる被写体100に対して照明光が照射される。 Figure 2 shows the overall configuration of an endoscope objective optical system or the like to the distal end of the insertion portion 1 of the flexible tubular be built, the illumination light is irradiated to the object 100 to be observed.

【0009】挿入部1の基端に連結された操作部3には、挿入部1の先端に内蔵された後述する照明用の発光ダイオードに駆動電力を供給するための電池パック6 [0009] The insertion portion 1 of the groups linked operation portion end 3, a battery pack for supplying driving power to the light emitting diode for lighting, which will be described later, which is built into the tip of the insertion portion 1 6
が、着脱自在に取り付けられている。 But detachably mounted.

【0010】4及び5は、送気送水及び吸引の各操作を行うための操作弁である。 [0010] 4 and 5 is an operation valve for performing each operation of the air water and suction. また、7及び8は、外部に設けられた吸引装置と送気送水装置であり、各々に接続されたチューブが操作部3に対して着脱自在に接続されている。 Further, 7 and 8 are the suction device and the air and water supply device provided outside, connected tube is detachably connected to the operation unit 3 in each.

【0011】図3は挿入部1の先端面を示しており、電気絶縁性であって熱伝導性の悪いプラスチック材からなる先端部本体10の端面に、観察窓11、照明窓12、 [0011] Figure 3 shows the distal end surface of the insertion portion 1, the end surface of the distal end portion main body 10 that an electrically insulating made of low thermal conductivity plastic material, an observation window 11, illumination window 12,
送気ノズル13、送水ノズル14及び処置具突出口15 Air supply nozzle 13, the water supply nozzle 14 and the treatment instrument projection port 15
が配置されている。 There has been placed.

【0012】観察窓11の内部には対物光学系(図示せず)が配置されており、対物光学系により結像された被写体100の像が、イメージガイドファイババンドル等によって伝送されるようになっている。 [0012] Inside the observation window 11 is disposed an objective optical system (not shown), an image of the subject 100 imaged by the objective optical system, so as to be transmitted by the image guide fiber bundle or the like ing.

【0013】送水ノズル14と送気ノズル13は、観察窓11の表面に開口を向けて先端部本体10の端面から突設されており、観察窓11の表面に向けて水と空気を噴出させて観察窓11の表面の汚れを洗浄することができる。 [0013] water feeding nozzle 14 and the air supply nozzle 13 is projected from the end surface of the distal end portion main body 10 toward an opening in the surface of the observation window 11, is ejected water and air toward the surface of the observation window 11 dirt on the surface of the observation window 11 Te can be cleaned.

【0014】図1は、送水ノズル14と照明窓12の各々の中心を通る断面における挿入部1の先端部分の側面断面図であり、照明窓12に装着された凹レンズの内側に白色光を発する発光ダイオード20が配置され、その後方の挿入部1内に電線21が引き通されている。 [0014] Figure 1 is a side sectional view of a distal portion of the insertion portion 1 in a cross-section through the center of each of the water supply nozzle 14 and the illumination window 12, emits white light to the inside of the concave lens mounted to illumination window 12 emitting diode 20 is arranged, the wire 21 is pulled through into the insertion portion 1 of the rear.

【0015】発光ダイオード20は、先端部本体10に直接取り付けられているのではなく、IV−IV断面を図示する図4に示されるように、例えば銅、アルミニウム、 [0015] As the light emitting diode 20, rather than being attached directly to the distal end portion main body 10, as shown in FIG. 4 which illustrates the IV-IV cross section, for example, copper, aluminum,
又はそれらの合金材等のような熱伝導性のよい金属材料からなる高伝熱部材17に、発光部の外周面が囲まれる状態に支持されている。 Or a high heat transfer member 17 made of a good thermal conductivity metal material such as those alloy material, and is supported in a state where the outer circumferential surface of the emitting portion is enclosed. 図4において、23はイメージガイドファイババンドル、24は送気通路孔、25は処置具挿通チャンネルである。 4, the image guide fiber bundle 23, 24 is air passage hole, 25 is a treatment instrument insertion channel.

【0016】高伝熱部材17は、先端部本体10に形成された孔にピッタリと嵌め込まれて固着されており、挿入部1の先端部分の外表面に高伝熱部材17が露出しないよう、高伝熱部材17の外表面側に位置する部分は全て先端部本体10によって形成されている。 [0016] Koden'netsu member 17 is fixed is fitted with perfect hole formed in the distal end portion main body 10, so that Koden'netsu member 17 is not exposed on the outer surface of the tip portion of the insertion portion 1, portion positioned on the outer surface side of the Koden'netsu member 17 is formed by all the distal end portion main body 10.

【0017】そして、送気送水装置8から送られてくる水が通る送水チューブ19の先端が高伝熱部材17に後方から接続固着されていて、この送水チューブ19と送水ノズル14との間を接続する送水通路孔18(流体通過路)が高伝熱部材17に穿設されている。 [0017] Then, air tip of the water supply device water supply tube 19 through which the water coming from 8 is plugged fixed from behind Takaden heat member 17, between the water supply tube 19 and the water supply nozzle 14 water supply passage hole 18 to be connected (fluid passage) is formed in Takaden heat member 17.

【0018】このように構成された実施例の内視鏡の先端部においては、発光ダイオード20から放射される照明光が照明窓12を通って被写体100に照射される。 [0018] In the distal end portion of the endoscope of the thus constituted embodiment, the illumination light emitted from the light emitting diode 20 is irradiated on the subject 100 through the illumination window 12.
そして、観察窓11の表面を洗浄する必要に応じて、操作部3に配置された操作弁4で送水操作を行うことにより、外部の送気送水装置8から送られてきた水が送水通路孔18を通って送水ノズル14から観察窓11の表面に向けて噴出される。 The viewing surface as necessary to clean the window 11, by performing a water supply operation in operation valve 4 disposed in the operation portion 3, an external air and water supply device water sent from 8 water passage hole 18 through ejected toward the surface of the observation window 11 from the water supply nozzle 14.

【0019】したがって、点灯状態にある発光ダイオード20から発生する熱が、高伝熱部材17を通って送水通路孔18内を通過する水に伝導されて外部へ排出され、その結果、発光ダイオード20が冷却される。 [0019] Thus, heat generated from the light emitting diode 20 in the lighting state, which is discharged to the outside is conducted to the water through the Koden'netsu member 17 passing through the water supply passage hole 18, as a result, the light emitting diode 20 There is cooling.

【0020】また、高伝熱部材17が挿入部1の先端部分の外表面に露出しておらず、熱伝導性の悪い材料からなる先端部本体10が露出しているので、高伝熱部材1 Further, Koden'netsu member 17 is not exposed on the outer surface of the tip portion of the insertion portion 1, the distal end portion main body 10 made of a low thermal conductivity material is exposed, Koden'netsu member 1
7の温度上昇に起因する体内粘膜面の火傷等が発生しない。 7 burns like body mucosal surface due to the temperature rise does not occur.

【0021】なお、本発明は上記実施例に限定されるものではなく、例えば送気ノズル13に通じる送気通路孔を高伝熱部材17に穿設して、発光ダイオード20を空冷によって冷却してもよい。 [0021] The present invention is bored is not limited to the above embodiments, the air passage hole, for example leading to the air supply nozzle 13 to Takaden heat member 17, cooling the light emitting diode 20 by air it may be. また、図5に示される第2 The second, shown in Figure 5
の実施例のように、前後に二分割された先端部本体1 As in the embodiment, the tip body 1, which is bisected in the longitudinal
0,10′の間に高伝熱部材17をサンドイッチ状に配置してもよい。 0,10 The Koden'netsu member 17 may be arranged in a sandwich between the '.

【0022】 [0022]

【発明の効果】本発明によれば、発光ダイオードを囲んで熱伝導性のよい高伝熱部材を配置すると共に、挿入部の先端に設けられた観察窓の表面に向かって吹き付けられる流体が通過する流体通過路を高伝熱部材に形成したことにより、発光ダイオードから発生する熱が高伝熱部材を通って流体通過路内を通過する流体に伝導されて外部へ排出され、その結果、照明光源として挿入部先端に内蔵された発光ダイオードが冷却され、発光効率と寿命の低下を抑制することができる。 According to the present invention, together with arranging the good thermal conductivity Takaden heat member, a fluid to be sprayed toward the surface of the observation window provided at a distal end of the insertion portion passes surround the light emitting diode by a fluid passage formed in Takaden heat member, is transferred to the fluid to heat generated from the light emitting diode passes through the fluid passage in the through Takaden heat member is discharged to the outside, as a result, lighting emitting diode incorporated in the leading end of the insertion portion as the light source is cooled, it is possible to suppress a decrease in luminous efficiency and lifetime.

【0023】そして、観察窓の表面に向かって流体を吹き付けるための構成は一般の内視鏡には必ず必要なものであるから、内視鏡の挿入部を太くすることなく発光ダイオードの冷却を効果的に行うことができる。 [0023] Then, since arrangement for blowing fluid towards the surface of the observation window is generally of the endoscope is intended always necessary, the cooling of the light emitting diode without thickening the insertion portion of the endoscope it can be carried out effectively.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の第1の実施例の内視鏡の先端部の側面断面図である。 1 is a side sectional view of the distal end portion of the endoscope of the first embodiment of the present invention.

【図2】本発明の第1の実施例の内視鏡装置の全体構成を示す外観図である。 Is an external view showing the overall configuration of an endoscope apparatus according to the first embodiment of the present invention; FIG.

【図3】本発明の第1の実施例の内視鏡の先端部の正面図である。 3 is a front view of the tip of the endoscope of the first embodiment of the present invention.

【図4】本発明の第1の実施例の内視鏡の先端部の図1 Figure of the distal end portion of the endoscope of the first embodiment of the present invention; FIG 1
におけるIV−IV断面図である。 It is a sectional view taken along line IV-IV in.

【図5】本発明の第2の実施例の内視鏡の先端部の側面断面図である。 5 is a side cross-sectional view of the distal end portion of the endoscope of the second embodiment of the present invention.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 挿入部 10 先端部本体 11 観察窓 12 照明窓 14 送水ノズル 17 高伝熱部材 18 送水通路孔(流体通過路) 20 発光ダイオード 1 insertion part 10 the distal end portion main body 11 observation window 12 the illumination window 14 water supply nozzle 17 Koden'netsu member 18 water supply passage hole (fluid passage) 20 light emitting diodes

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】挿入部の先端に設けられた照明窓内に発光ダイオードを配置して、上記発光ダイオードから放射される光により被写体を照明するようにした内視鏡の先端部において、 上記発光ダイオードを囲んで熱伝導性のよい高伝熱部材を配置すると共に、上記挿入部の先端に設けられた観察窓の表面に向かって吹き付けられる流体が通過する流体通過路を、上記高伝熱部材に形成したことを特徴とする内視鏡の先端部。 We claim: 1. Place the light emitting diodes within the illumination window provided at a distal end of the insertion portion, the distal end of the endoscope so as to illuminate the object with light emitted from the light emitting diode, the light emitting with placing the good thermal conductivity Takaden heat member surrounding the diode, a fluid passage for fluid to be sprayed passes toward the surface of the observation window provided at a distal end of the insertion portion, the high heat transfer member distal end portion of the endoscope, characterized in that formed on.
  2. 【請求項2】上記高伝熱部材が上記挿入部の先端部分の外表面に露出しないように、上記挿入部の先端部分の外表面が熱伝導性の悪い部材によって形成されている請求項1記載の内視鏡の先端部。 2. As the high heat transfer member is not exposed on the outer surface of the tip portion of the insertion portion, claims the outer surface of the tip portion of the insertion portion is formed by a low thermal conductivity member 1 distal end portion of the endoscope according.
JP2000379908A 2000-12-14 2000-12-14 Distal end portion of the endoscope Active JP4786790B2 (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000379908A JP4786790B2 (en) 2000-12-14 2000-12-14 Distal end portion of the endoscope

Publications (2)

Publication Number Publication Date
JP2002177197A true JP2002177197A (en) 2002-06-25
JP4786790B2 JP4786790B2 (en) 2011-10-05

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005032356A1 (en) * 2003-10-06 2005-04-14 Olympus Corporation Endoscope
JP2008011991A (en) * 2006-07-04 2008-01-24 Olympus Medical Systems Corp Endoscope
JP2008011992A (en) * 2006-07-04 2008-01-24 Olympus Medical Systems Corp Endoscope
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US8052597B2 (en) 2005-08-30 2011-11-08 Boston Scientific Scimed, Inc. Method for forming an endoscope articulation joint
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US8888684B2 (en) 2006-03-27 2014-11-18 Boston Scientific Scimed, Inc. Medical devices with local drug delivery capabilities
US7955255B2 (en) 2006-04-20 2011-06-07 Boston Scientific Scimed, Inc. Imaging assembly with transparent distal cap
US8202265B2 (en) 2006-04-20 2012-06-19 Boston Scientific Scimed, Inc. Multiple lumen assembly for use in endoscopes or other medical devices
US9358363B2 (en) 2006-04-20 2016-06-07 Boston Scientific Scimed, Inc. Multiple lumen assembly for use in endoscopes or other medical devices
US8870753B2 (en) 2006-04-20 2014-10-28 Boston Scientific Scimed, Inc. Imaging assembly with transparent distal cap
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EP2594188A1 (en) * 2011-11-18 2013-05-22 Invendo Medical Gmbh Medical endoscope comprising cooling means
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