JP2005087661A - Electronic endoscope - Google Patents

Electronic endoscope Download PDF

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JP2005087661A
JP2005087661A JP2003329282A JP2003329282A JP2005087661A JP 2005087661 A JP2005087661 A JP 2005087661A JP 2003329282 A JP2003329282 A JP 2003329282A JP 2003329282 A JP2003329282 A JP 2003329282A JP 2005087661 A JP2005087661 A JP 2005087661A
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circuit board
electronic endoscope
electronic
shield case
circuit
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JP2003329282A
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JP4406249B2 (en
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Naoya Ouchi
直哉 大内
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Pentax Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic endoscope which does not cause electrical fault by preventing corrosion of the wiring connection part etc. of a circuit board arranged in a connector part even when sterilization is repeated with autoclave. <P>SOLUTION: In the electronic endoscope, an outer wall part is constituted to be water-tight entirely, and the circuit board 26 mounting an electronic circuit 25 is arranged in a connector part 10 which is connectable and dis-connectable to a video processor. A shield case 30 made of fluororubber for sealing the circuit board 26 with the electronic circuit 25 is arranged in the connector part 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は電子内視鏡に関する。   The present invention relates to an electronic endoscope.

内視鏡は使用後の消毒、滅菌を確実に行うことが重要であり、外壁部を全て水密に構成した上で、高圧高温の蒸気を用いて滅菌するオートクレーブ等に耐え得るように内圧調整弁を設けたものも一般化している（例えば、特許文献１）。
特開２００２−１７７１９３ It is important to ensure that the endoscope is sterilized and sterilized after use, and the internal pressure adjustment valve is designed to withstand autoclaves that are sterilized using high-pressure and high-temperature steam after the outer wall is completely watertight. Are also generalized (for example, Patent Document 1).
JP 2002-177193 A

内視鏡の隣り合う外壁部材間の隙間を密閉するために、例えばエポキシ系又はシリコン系等の高分子材料を用いた接着剤が用いられている。
しかし、そのような高分子材料は吸湿性が高いので、オートクレーブに用いられる高圧高温蒸気が僅かずつではあるが透過してしまい、滅菌処理を繰り返しているうちに内視鏡内部に次第に蒸気が浸入して結露する場合がある。 In order to seal a gap between adjacent outer wall members of the endoscope, an adhesive using a polymer material such as an epoxy-based or silicon-based material is used.
However, since such a polymer material is highly hygroscopic, the high-pressure and high-temperature steam used in the autoclave permeates little by little, and the vapor gradually enters the endoscope during the sterilization process. Condensation may occur.

すると、電子内視鏡においては、ビデオプロセッサに対して接続／離脱自在なコネクタ部内に電子回路を搭載して配置されている回路基板の配線接続部等が腐食して、電気的な故障発生の一因になっていた。   Then, in the electronic endoscope, the wiring connection portion of the circuit board mounted with the electronic circuit in the connector portion that can be connected / disconnected to / from the video processor corrodes, and an electrical failure occurs. It was a factor.

そこで本発明は、オートクレーブによる滅菌処理が繰り返されても、コネクタ部内に配置されている回路基板の配線接続部等が腐食せず、電気的な故障が発生しない電子内視鏡を提供することを目的とする。   Therefore, the present invention provides an electronic endoscope in which even when sterilization by an autoclave is repeated, the wiring connection portion of the circuit board disposed in the connector portion does not corrode and an electrical failure does not occur. Objective.

上記の目的を達成するため、本発明の電子内視鏡は、外壁部が全て水密に構成されて、電子回路を搭載した回路基板が、ビデオプロセッサに対して接続／離脱自在なコネクタ部内に配置された電子内視鏡において、回路基板を電子回路と共に密封するフッ素ゴム製のシールドケースを、コネクタ部内に配置したものである。   In order to achieve the above object, the electronic endoscope according to the present invention has an outer wall portion that is watertight, and a circuit board on which an electronic circuit is mounted is disposed in a connector portion that can be connected to and detached from a video processor. In the electronic endoscope, a shield case made of fluoro rubber that seals the circuit board together with the electronic circuit is disposed in the connector portion.

なお、シールドケースの外面に沿って硬質の板材からなる補強枠体を配置するとシールドケースによる密封状態をより確実なものにすることができ、回路基板に接続された電線を通過させるための孔を電線の外径寸法より小さな径でシールドケースに形成すれば、電線通過部の密封も確実に行うことができる。   If a reinforcing frame made of a hard plate material is disposed along the outer surface of the shield case, the sealed state by the shield case can be made more reliable, and a hole for allowing the electric wire connected to the circuit board to pass through can be provided. If the shield case is formed with a diameter smaller than the outer diameter dimension of the electric wire, the electric wire passage portion can be reliably sealed.

本発明によれば、回路基板を電子回路と共に密封するフッ素ゴム製のシールドケースをコネクタ部内に配置したことにより、オートクレーブによる滅菌処理が繰り返されてコネクタ部内に蒸気が浸入しても、シールドケース内に配置されている回路基板には蒸気が達しないので、回路基板の配線接続部等が腐食せず、電気的な故障が発生しない。   According to the present invention, the fluororubber shield case that seals the circuit board together with the electronic circuit is arranged in the connector portion, so that even if sterilization processing by the autoclave is repeated and vapor enters the connector portion, Since the steam does not reach the circuit board disposed in the circuit board, the wiring connection portion of the circuit board does not corrode and an electrical failure does not occur.

回路基板を電子回路と共に密封するフッ素ゴム製のシールドケースをコネクタ部内に配置し、シールドケースの外面に沿って硬質の板材からなる補強枠体を配置する。そして、回路基板に接続された電線を通過させる部分には、電線と通過させるための孔を電線の外径寸法より小さな径でシールドケースに形成する。   A fluororubber shield case for sealing the circuit board together with the electronic circuit is disposed in the connector portion, and a reinforcing frame made of a hard plate material is disposed along the outer surface of the shield case. And in the part which lets the electric wire connected to the circuit board pass, the hole for making it pass with an electric wire is formed in a shield case with a diameter smaller than the outer diameter dimension of an electric wire.

図面を参照して本発明の実施例を説明する。
図３は電子内視鏡の全体構成を示しており、観察像を撮像するための固体撮像素子が先端に内蔵された挿入部１の基端に操作部２が連結され、操作部２から延出する可撓性連結管３の先端に、図示されていないビデオプロセッサに接続／離脱自在なコネクタ部１０が取り付けられている。 Embodiments of the present invention will be described with reference to the drawings.
FIG. 3 shows the overall configuration of the electronic endoscope. The operation unit 2 is connected to the proximal end of the insertion unit 1 in which a solid-state imaging device for capturing an observation image is built in the distal end, and extends from the operation unit 2. A connector portion 10 that can be connected / disconnected to / from a video processor (not shown) is attached to the tip of the flexible connecting tube 3 that comes out.

１１は、照明光を導入するためのライトガイドコネクタ、１２は電気接点を接続するための電気コネクタ、１３は内視鏡の内部圧力を外部圧力に合わせて低下させるための調圧弁である。   11 is a light guide connector for introducing illumination light, 12 is an electrical connector for connecting electrical contacts, and 13 is a pressure regulating valve for reducing the internal pressure of the endoscope in accordance with the external pressure.

この電子内視鏡は、各部の外壁部が全て水密に構成されていて、分解が必要な部分には、隣り合う外壁部材間の隙間を密閉するためＯリング等のシール材が装着され、分解不要な部分では、隣り合う外壁部材間の隙間が例えばエポキシ系又はシリコン系等のような高分子材料を用いた接着剤により密閉されている。   In this electronic endoscope, all outer wall portions of each part are watertight, and a seal material such as an O-ring is attached to a portion that needs to be disassembled to seal a gap between adjacent outer wall members. In an unnecessary portion, a gap between adjacent outer wall members is sealed with an adhesive using a polymer material such as an epoxy type or a silicon type.

図１はコネクタ部１０を示しており、図２はそのII−II断面図である。
コネクタ部１０を外装する外装ケース２０の可撓性連結管３寄りの半部には、送気送水チューブ接続口金１４、吸引チューブ接続口金１５、噴射用送水チューブ接続口金１６及びアース端子１７等が突出して配置されている。 FIG. 1 shows a connector portion 10, and FIG. 2 is a sectional view taken along the line II-II.
On the half of the exterior case 20 that encloses the connector portion 10 near the flexible connecting tube 3, there are an air / water tube connection base 14, a suction tube connection base 15, an injection water supply tube connection base 16, an earth terminal 17, and the like. Protrusively arranged.

外装ケース２０の先端開口部には蓋体１８がＯリングを介して水密に取り付けられていて、電気コネクタ１２やライトガイドコネクタ１１はその蓋体１８から外方に突出する状態に配置されている。   A lid 18 is attached to the front end opening of the exterior case 20 in a watertight manner via an O-ring, and the electrical connector 12 and the light guide connector 11 are disposed so as to protrude outward from the lid 18. .

外装ケース２０内の蓋体１８寄りの半部には、内部空間を左右に仕切る中央位置にセンターフレーム２１が配置されていて、その一方の空間内に、高周波ノイズを抑制するためのフェライトコア２２が収納されている。２３は、フェライトコア２２をセンターフレーム２１に固定するための取り付け板である。   A center frame 21 is arranged at a central position that divides the internal space left and right in the half of the outer case 20 near the lid 18, and a ferrite core 22 for suppressing high-frequency noise in one of the spaces. Is stored. Reference numeral 23 denotes a mounting plate for fixing the ferrite core 22 to the center frame 21.

センターフレーム２１を挟んでフェライトコア２２と逆側の空間内には、挿入部１の先端に配置されている固体撮像素子の駆動等を行うための電子回路２５を搭載した回路基板２６が収納されている。   In a space opposite to the ferrite core 22 across the center frame 21, a circuit board 26 on which an electronic circuit 25 for driving a solid-state imaging device arranged at the tip of the insertion portion 1 is mounted is accommodated. ing.

回路基板２６は、電気コネクタ１２を固定するための固定ナット２８により蓋体１８に固定された端部フレーム２７と、外装ケース２０の内部空間を前後に仕切る位置に配置されたメインフレーム２９とにビス止め固定されている。   The circuit board 26 includes an end frame 27 fixed to the lid body 18 by a fixing nut 28 for fixing the electrical connector 12, and a main frame 29 arranged at a position for partitioning the internal space of the exterior case 20 back and forth. It is fixed with screws.

そして、そのような回路基板２６を電子回路２５及びフェライトコア２２等と共に囲んで密封する、弾力性があって耐候性に富むフッ素ゴム製のシールドケース３０が外装ケース２０内に配置されている。   A shield case 30 made of fluoro rubber that is surrounded by the electronic circuit 25, the ferrite core 22 and the like and is hermetically sealed to make such a circuit board 26 elastic and rich in weather resistance is disposed in the outer case 20.

また、シールドケース３０の外面に沿って例えばステンレス鋼板等からなる硬質の板材からなる補強枠体３１が配置されており、端部フレーム２７の外面とメインフレーム２９の外面とにシールドケース３０を押し付けるように、補強枠体３１が端部フレーム２７とメインフレーム２９にビス止め固定されている。   A reinforcing frame 31 made of a hard plate made of, for example, a stainless steel plate is disposed along the outer surface of the shield case 30, and the shield case 30 is pressed against the outer surface of the end frame 27 and the outer surface of the main frame 29. Thus, the reinforcing frame 31 is fixed to the end frame 27 and the main frame 29 with screws.

また、可撓性連結管３内に挿通されて回路基板２６に接続された電線３２を通過させるための孔３３が、電線３２の外径寸法より小さな径でシールドケース３０に形成されていて、その部分では、電線３２が孔３３により締め付けられてシールされた状態になっている。なお、電気コネクタ１２の基部は、内部が完全に中実になって通水性がない状態になっている。   Further, a hole 33 for allowing the electric wire 32 inserted into the flexible connecting tube 3 and connected to the circuit board 26 to pass therethrough is formed in the shield case 30 with a diameter smaller than the outer diameter of the electric wire 32, In that portion, the electric wire 32 is sealed by being tightened by the hole 33. The base of the electrical connector 12 is completely solid inside and has no water permeability.

そのような構成により、電子回路２５を搭載した回路基板２６とフェライトコア２２とが配置された空間は、外装ケース２０内においてさらにシールドケース３０によって完全に密封された状態になっており、フッ素ゴムは蒸気を通過させないので、オートクレーブ滅菌処理等により外装ケース２０内に蒸気が浸入しても回路基板２６の配線接続部等には腐食が発生しない。   With such a configuration, the space in which the circuit board 26 on which the electronic circuit 25 is mounted and the ferrite core 22 is arranged is in a state of being completely sealed by the shield case 30 in the outer case 20. Since the steam does not pass through, even if the steam enters the outer case 20 due to an autoclave sterilization process or the like, the wiring connection portion of the circuit board 26 does not corrode.

本発明の実施例のコネクタ部の側面断面図である。It is side surface sectional drawing of the connector part of the Example of this invention. 本発明の実施例のコネクタ部の図１におけるII−II断面図である。It is II-II sectional drawing in FIG. 1 of the connector part of the Example of this invention. 本発明の実施例の電子内視鏡の全体構成を示す外観図である。1 is an external view showing an overall configuration of an electronic endoscope according to an embodiment of the present invention.

符号の説明Explanation of symbols

１０ コネクタ部
２０ 外装ケース
２２ フェライトコア
２５ 電子回路
２６ 回路基板
３０ シールドケース
３１ 補強枠体
３２ 電線
３３ 孔 DESCRIPTION OF SYMBOLS 10 Connector part 20 Exterior case 22 Ferrite core 25 Electronic circuit 26 Circuit board 30 Shield case 31 Reinforcement frame 32 Electric wire 33 Hole

Claims (3)

外壁部が全て水密に構成されて、電子回路を搭載した回路基板が、ビデオプロセッサに対して接続／離脱自在なコネクタ部内に配置された電子内視鏡において、
上記回路基板を上記電子回路と共に密封するフッ素ゴム製のシールドケースを、上記コネクタ部内に配置したことを特徴とする電子内視鏡。 In an electronic endoscope in which the outer wall portion is entirely watertight, and the circuit board on which the electronic circuit is mounted is disposed in a connector portion that can be connected to and detached from the video processor.
An electronic endoscope characterized in that a fluororubber shield case for sealing the circuit board together with the electronic circuit is disposed in the connector portion. 上記シールドケースの外面に沿って、硬質の板材からなる補強枠体が配置されている請求項１記載の電子内視鏡。 The electronic endoscope according to claim 1, wherein a reinforcing frame body made of a hard plate material is disposed along an outer surface of the shield case. 上記回路基板に接続された電線を通過させるための孔が、上記電線の外径寸法より小さな径で上記シールドケースに形成されている請求項１又は２記載の電子内視鏡。 The electronic endoscope according to claim 1, wherein a hole for allowing the electric wire connected to the circuit board to pass is formed in the shield case with a diameter smaller than an outer diameter of the electric wire.
JP2003329282A 2003-09-22 2003-09-22 Electronic endoscope Expired - Fee Related JP4406249B2 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007215931A (en) * 2006-02-20 2007-08-30 Olympus Medical Systems Corp Endoscope
JP2007229085A (en) * 2006-02-28 2007-09-13 Olympus Medical Systems Corp Endoscope
JP2008061769A (en) * 2006-09-06 2008-03-21 Pentax Corp Endoscope and endoscope management system
JP2013099397A (en) * 2011-11-08 2013-05-23 Hoya Corp Electric connector device of endoscope
JP2013102835A (en) * 2011-11-11 2013-05-30 Hoya Corp Electric connector device of endoscope
JP2013222898A (en) * 2012-04-18 2013-10-28 Olympus Corp Dew condensation prevention structure of endoscope
EP2217139B1 (en) * 2007-11-08 2014-08-13 St. Jude Medical Systems AB Removable energy source for sensor guidewire
US8974398B2 (en) 2007-11-08 2015-03-10 St. Jude Medical Coordination Center Bvba Removable energy source for sensor guidewire

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007215931A (en) * 2006-02-20 2007-08-30 Olympus Medical Systems Corp Endoscope
JP2007229085A (en) * 2006-02-28 2007-09-13 Olympus Medical Systems Corp Endoscope
JP2008061769A (en) * 2006-09-06 2008-03-21 Pentax Corp Endoscope and endoscope management system
EP2217139B1 (en) * 2007-11-08 2014-08-13 St. Jude Medical Systems AB Removable energy source for sensor guidewire
US8974398B2 (en) 2007-11-08 2015-03-10 St. Jude Medical Coordination Center Bvba Removable energy source for sensor guidewire
JP2013099397A (en) * 2011-11-08 2013-05-23 Hoya Corp Electric connector device of endoscope
JP2013102835A (en) * 2011-11-11 2013-05-30 Hoya Corp Electric connector device of endoscope
JP2013222898A (en) * 2012-04-18 2013-10-28 Olympus Corp Dew condensation prevention structure of endoscope

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