JP2009233186A - Connection structure of flexible tube to connector section in electronic endoscope - Google Patents

Connection structure of flexible tube to connector section in electronic endoscope Download PDF

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JP2009233186A
JP2009233186A JP2008084841A JP2008084841A JP2009233186A JP 2009233186 A JP2009233186 A JP 2009233186A JP 2008084841 A JP2008084841 A JP 2008084841A JP 2008084841 A JP2008084841 A JP 2008084841A JP 2009233186 A JP2009233186 A JP 2009233186A
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flexible tube
electronic endoscope
connector
connection structure
tube
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Genki Kobayashi
元起 小林
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Hoya Corp
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Hoya Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure of a flexible tube to a connector section in an electronic endoscope capable of moving an operation section and an insertion section to an image processor by a small force and retaining the moved state by the small force. <P>SOLUTION: This electronic endoscope 10 is provided with a detachable connector section 15 to a light source device P at the end of the flexible tube 13 extending from the operation section 11 to the opposite side of the insertion section 12, wherein the end portion of the flexible tube 13 and the connector section 15 are connected together via a universal head mechanism. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、電子内視鏡における可撓管とコネクタ部の接続構造に関する。   The present invention relates to a connection structure between a flexible tube and a connector portion in an electronic endoscope.

電子内視鏡は一般的に、術者が把持する操作部と、操作部から延びる挿入部と、操作部から挿入部と反対方向に延びる可撓管（ユニバーサルチューブ）と、可撓管の端部に固定した硬質材料からなるコネクタ部と、を具備している。コネクタ部における可撓管との接続端面には可撓管の端部の周囲を覆う筒状の折止ゴムの一端が固定してある。コネクタ部は電子内視鏡とは別体のプロセッサ（光源装置兼画像処理装置）に着脱可能であり、コネクタ部をプロセッサに接続すると、電子内視鏡の撮像素子で撮像した画像の画像処理がプロセッサで行われ、画像処理した画像がモニタに映し出される。
特開２００４−６５５１２号公報 In general, an electronic endoscope has an operation unit held by an operator, an insertion unit extending from the operation unit, a flexible tube (universal tube) extending from the operation unit in a direction opposite to the insertion unit, and an end of the flexible tube. And a connector portion made of a hard material fixed to the portion. One end of a cylindrical folding rubber that covers the periphery of the end of the flexible tube is fixed to the end surface of the connector that is connected to the flexible tube. The connector unit can be attached to and detached from a processor (light source device and image processing device) separate from the electronic endoscope. When the connector unit is connected to the processor, image processing of an image captured by the imaging device of the electronic endoscope is performed. An image processed by the processor and image-processed is displayed on the monitor.
JP 2004-65512 A

術者は内視鏡術を行う際に、操作部及び挿入部をプロセッサに対して様々な方向に動かし、操作部及び挿入部を術者自身が最も内視鏡術を行い易い位置に移動させる。操作部及び挿入部をプロセッサに対して移動させると、この移動力が可撓管と折止ゴムに及び、自由状態にあった折止ゴムと可撓管の折止ゴム側の端部が弾性変形するが、折止ゴムと可撓管の折止ゴム側の端部を弾性変形させるためには相応の力が必要なので、操作部及び挿入部をプロセッサに対して大きく移動させるためには相応の力が必要であった。
また、弾性変形した折止ゴム及び可撓管の折止ゴム側の端部には自由状態に復帰しようとする力が発生するので、術者は折止ゴム及び可撓管の折止ゴム側の端部が自由状態に復帰しないように力を入れながら内視鏡術を行わなければならなず、内視鏡術に集中するのが難しかった。 When performing an endoscopy, the operator moves the operation unit and the insertion unit in various directions with respect to the processor, and moves the operation unit and the insertion unit to a position where the operator can perform endoscopy most easily. . When the operation unit and the insertion unit are moved with respect to the processor, this moving force reaches the flexible tube and the folding rubber, and the end of the folding tube and the folding tube on the flexible tube in the free state is elastic. Although it is deformed, an appropriate force is required to elastically deform the ends of the folding rubber and the flexible tube on the side of the folding rubber. The power of was necessary.
In addition, since a force to return to the free state is generated at the elastically deformed folding rubber and the end of the flexible tube on the side of the folding rubber, the surgeon can use the folding rubber and the flexible tube on the side of the folding rubber. Endoscopic surgery had to be performed while putting effort to prevent the end of the arm from returning to a free state, and it was difficult to concentrate on endoscopy.

本発明は、操作部及び挿入部を光源装置に対して小さな力で移動させることが可能であり、かつ移動させた状態を小さな力で維持することが可能な電子内視鏡における可撓管とコネクタ部の接続構造を提供することを目的とする。   The present invention relates to a flexible tube in an electronic endoscope capable of moving an operation unit and an insertion unit with a small force with respect to a light source device and capable of maintaining the moved state with a small force. It aims at providing the connection structure of a connector part.

本発明の電子内視鏡における可撓管とコネクタ部の接続構造は、操作部から挿入部と反対側に延びる可撓管の端部に、光源装置に着脱可能なコネクタ部を備える電子内視鏡において、上記可撓管の上記端部と上記コネクタ部とを雲台機構を介して接続したことを特徴としている。   In the electronic endoscope according to the present invention, the connection structure between the flexible tube and the connector portion includes a connector portion that can be attached to and detached from the light source device at an end portion of the flexible tube that extends from the operation portion on the opposite side to the insertion portion. In the mirror, the end of the flexible tube and the connector are connected via a pan head mechanism.

上記雲台機構が、上記可撓管の上記端部に固定した接続部材と上記コネクタ部との一方に形成した、略球状をなす球状嵌合部と、他方に凹設した、該球状嵌合部が接触しながら回転可能に嵌合する回転支持凹部と、を備えていてもよい。   The pan head mechanism is formed in one of the connection member fixed to the end of the flexible tube and the connector portion, and is formed in a substantially spherical spherical fitting portion, and the spherical fitting is recessed in the other. And a rotation support recess that is rotatably fitted while the portions are in contact with each other.

さらに、上記接続部材に上記球状嵌合部を設け、かつ上記コネクタ部に上記回転支持凹部を形成し、該球状嵌合部に上記可撓管と連通する貫通孔を形成し、上記コネクタ部の内部に上記貫通孔と連通する内部空間を形成し、上記挿入部、操作部及び可撓管の内部管路に配設した、該内部管路に沿って延びる可撓性材料からなる長尺状内蔵物の上記コネクタ部側の端部を、上記貫通孔を通して上記内部空間に位置させ、上記長尺状内蔵物の周面における上記内部空間及び上記貫通孔に位置する部分に金属製のコイルを巻き付けるのが好ましい。
上記長尺状内蔵物は、複数の線状部材を束ねたものであってもよい。 Further, the spherical fitting portion is provided in the connection member, the rotation support recess is formed in the connector portion, a through hole communicating with the flexible tube is formed in the spherical fitting portion, and the connector portion An internal space that communicates with the through hole is formed inside, and is formed in a long shape made of a flexible material that extends along the internal conduit, and is disposed in the internal conduit of the insertion portion, the operation portion, and the flexible tube. The end of the built-in object on the connector part side is positioned in the internal space through the through-hole, and a metal coil is placed on the inner space and the part located in the through-hole on the peripheral surface of the elongated built-in object. Wrapping is preferable.
The long built-in object may be a bundle of a plurality of linear members.

上記接続部材に、上記可撓管、操作部及び挿入部に内蔵した送気チューブ、送水チューブ及び吸引チューブの少なくともいずれかの開口端部を設けてもよい。   The connecting member may be provided with an opening end portion of at least one of an air supply tube, a water supply tube, and a suction tube built in the flexible tube, the operation portion, and the insertion portion.

また、上記回転支持凹部の内周面を、上記球状嵌合部と線接触するように構成してもよい。   Moreover, you may comprise the inner peripheral surface of the said rotation support recessed part so that a line contact may be carried out with the said spherical fitting part.

本発明によれば、コネクタ部を光源装置に接続した状態で操作部及び挿入部を光源装置に対して移動させると、可撓管が変形するだけでなく、雲台機構が作動することにより可撓管のコネクタ部側の端部とコネクタ部が相対回転する。そのため従来の電子内視鏡に比べて、小さい力で操作部及び挿入部を光源装置に対して移動させることができる。
また、このように可撓管のコネクタ部側の端部とコネクタ部が相対回転すると、雲台機構がこの状態を保持するので、操作者はこの状態を保持するために大きな力を使う必要がない。そのため、操作者は内視鏡術に集中することが可能である。 According to the present invention, if the operation unit and the insertion unit are moved with respect to the light source device while the connector unit is connected to the light source device, not only the flexible tube is deformed but also the pan head mechanism is activated. The end of the flexible tube on the connector part side and the connector part rotate relative to each other. Therefore, compared with the conventional electronic endoscope, the operation unit and the insertion unit can be moved with respect to the light source device with a small force.
In addition, when the end of the flexible tube on the connector portion side and the connector portion rotate relative to each other, the pan head mechanism maintains this state. Therefore, the operator needs to use a large force to maintain this state. Absent. Therefore, the operator can concentrate on endoscopy.

請求項３または４のように構成すると、雲台機構が作動したときに長尺状内蔵物におけるコネクタ部の内部空間及び球状嵌合部の貫通孔の内部に位置する部分が曲がるものの、長尺状内蔵物の外周面の当該部分に金属製のコイルを巻いてあるので、仮に可撓管のコネクタ部側の端部をコネクタ部に対して回転させた状態を長時間維持しても、長尺状内蔵物の当該部分に曲げ癖がつくおそれがない。   When configured as in claim 3 or 4, when the pan head mechanism is operated, the internal space of the connector part and the part located inside the through hole of the spherical fitting part in the long built-in object bend, Since the metal coil is wound around the part of the outer peripheral surface of the built-in object, even if the end of the flexible tube on the connector part side is rotated with respect to the connector part, it is long. There is no risk of bending wrinkles on the part of the built-in scale.

請求項５のように構成すると、雲台機構の働きにより接続部材がコネクタ部に対して相対回転しても、送気チューブや送水チューブや吸引チューブが座屈することがない。そのため、操作部及び挿入部を光源装置に対して大きく移動させても、送気、送水、吸引の各動作を円滑に行うことが可能である。   If comprised like Claim 5, even if a connection member rotates relatively with respect to a connector part by the effect | action of a pan head mechanism, an air supply tube, a water supply tube, and a suction tube do not buckle. Therefore, even if the operation unit and the insertion unit are largely moved with respect to the light source device, it is possible to smoothly perform the air supply, water supply, and suction operations.

請求項６のように構成すると、球状嵌合部と回転支持凹部の接触態様を面接触にした場合に比べて、雲台機構が小さい力で動作するようになるので、操作部及び挿入部を光源装置に対して円滑に移動させることが可能になる。   According to the sixth aspect of the present invention, the pan head mechanism operates with a small force compared to the case where the contact state between the spherical fitting portion and the rotation support concave portion is a surface contact. The light source device can be moved smoothly.

以下、本発明の一実施形態について添付図面を参照しながら説明する。なお、以下の説明中の前後、上下、及び左右の方向は図１、図２、図３等に矢線で示したコネクタ部１５を基準とする方向に基づいている。
図１に全体構造を示す本実施形態の電子内視鏡１０は医療用の内視鏡であり、操作者が把持する操作部１１と、操作部１１から延出する可撓性のある挿入部１２と、操作部１１から挿入部１２と反対側に延びるゴム製のユニバーサルチューブ（可撓管）１３と、ユニバーサルチューブ１３の端部に固定した接続部材３０と、接続部材３０と接続する中空のケースからなるコネクタ部１５と、を備えている。挿入部１２の先端部は円柱形状をなす硬質部材から構成してあり、その先端面には対物レンズ、処置具挿通孔（吸引孔）、一対の照明用レンズ、送気孔、及び送水孔（いずれも図示略）が設けてある。
図示するようにコネクタ部１５の後端面には共に筒状をなす光源用接続スリーブ１６と画像処理用接続スリーブ１７が突設してある。光源用接続スリーブ１６と画像処理用接続スリーブ１７は電子内視鏡１０とは別体であるプロセッサＰ（光源装置兼画像処理装置。図１参照）の前面に形成した２つの接続孔（図示略）にそれぞれ嵌合可能（着脱可能）であり、プロセッサＰは図示を省略したモニタと接続している。光源用接続スリーブ１６を上記接続孔に接続すると、プロセッサＰに内蔵した光源で発生した光が光源用接続スリーブ１６、コネクタ部１５、ユニバーサルチューブ１３、操作部１１及び挿入部１２の内部に配設した導光ファイバＬＧＦを通って上記一対の照明レンズに与えられる。さらに、画像処理用接続スリーブ１７を上記接続孔に接続すると、画像処理用接続スリーブ１７及びコネクタ部１５に内蔵した画像信号用ケーブル（図示略）がプロセッサＰ内の画像処理装置と接続する。この画像信号用ケーブルはコネクタ部１５に内蔵した回路基板（図示略）と接続している。さらに、当該回路基板には別の画像信号用ケーブルＣ１、画像信号用ケーブルＣ２の後端が接続してあり、画像信号用ケーブルＣ１及び画像信号用ケーブルＣ２の先端部はユニバーサルチューブ１３、操作部１１及び挿入部１２を通って挿入部１２の先端部に内蔵した撮像素子（図示略）と接続している。従って、撮像素子が被写体を撮像するとプロセッサＰが当該撮像画像の画像処理を行い、撮像した画像を上記モニタが表示する。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, the front and rear, top and bottom, and right and left directions are based on directions based on the connector portion 15 indicated by an arrow in FIGS. 1, 2, and 3.
An electronic endoscope 10 according to the present embodiment whose entire structure is shown in FIG. 1 is a medical endoscope, and includes an operation unit 11 held by an operator and a flexible insertion unit extending from the operation unit 11. 12, a rubber universal tube (flexible tube) 13 extending from the operation unit 11 to the opposite side of the insertion unit 12, a connection member 30 fixed to the end of the universal tube 13, and a hollow connected to the connection member 30 And a connector portion 15 made of a case. The distal end portion of the insertion portion 12 is composed of a cylindrical hard member, and has an objective lens, a treatment instrument insertion hole (suction hole), a pair of illumination lenses, an air supply hole, and a water supply hole (any one) Are also not shown).
As shown in the figure, a light source connection sleeve 16 and an image processing connection sleeve 17 both project from the rear end surface of the connector portion 15. The light source connection sleeve 16 and the image processing connection sleeve 17 are two connection holes (not shown) formed on the front surface of a processor P (light source device / image processing apparatus; see FIG. 1) which is a separate body from the electronic endoscope 10. And the processor P is connected to a monitor (not shown). When the light source connection sleeve 16 is connected to the connection hole, the light generated by the light source built in the processor P is disposed inside the light source connection sleeve 16, the connector portion 15, the universal tube 13, the operation portion 11, and the insertion portion 12. The light is supplied to the pair of illumination lenses through the light guide fiber LGF. Further, when the image processing connection sleeve 17 is connected to the connection hole, the image processing connection sleeve 17 and the image signal cable (not shown) built in the connector portion 15 are connected to the image processing apparatus in the processor P. This image signal cable is connected to a circuit board (not shown) built in the connector section 15. Further, the rear ends of the image signal cable C1 and the image signal cable C2 are connected to the circuit board. The distal ends of the image signal cable C1 and the image signal cable C2 are the universal tube 13 and the operation unit. 11 and the insertion portion 12 are connected to an image sensor (not shown) built in the distal end portion of the insertion portion 12. Therefore, when the imaging device captures an image of the subject, the processor P performs image processing on the captured image, and the monitor displays the captured image.

次にコネクタ部１５及び接続部材３０の具体的な構造について説明する。
コネクタ部１５は、共に変性ＰＰＯ製である本体ケース１８の前端部に押さえケース２５を固定した構造であり、本体ケース１８の内部には内部空間１９が形成してある。本体ケース１８の前端部には内部空間１９と連通する回転支持凹部２０が形成してある。この回転支持凹部２０は図４に示した中心軸Ａを中心とする回転対称形状であり、その内周面の前部は非接触面２１となっており、後部は支持内周面２２となっている。さらに、本体ケース１８の前端部の外周面には雄ねじ２３が形成してある。
押さえケース２５の内周面の後部には雄ねじ２３と螺合可能な雌ねじ２６が形成してあり、雌ねじ２６を雄ねじ２３に螺合することにより押さえケース２５を本体ケース１８に固定できる。押さえケース２５の前部には押さえケース２５を前後方向に貫通する支持内周面（回転支持凹部）２７が形成してある。この支持内周面２７は、押さえケース２５を本体ケース１８に固定したときにその軸線が中心軸Ａと一致する回転対称形状であり、かつ押さえケース２５を本体ケース１８に固定したときに支持内周面２２と略前後対称をなす。支持内周面２７には環状凹部２８が凹設してあり、環状凹部２８にはシールリング２９が嵌合してある。 Next, specific structures of the connector portion 15 and the connection member 30 will be described.
The connector portion 15 has a structure in which a holding case 25 is fixed to the front end portion of the main body case 18 made of modified PPO, and an internal space 19 is formed inside the main body case 18. A rotation support recess 20 communicating with the internal space 19 is formed at the front end of the main body case 18. The rotational support recess 20 has a rotationally symmetric shape with the central axis A shown in FIG. 4 as the center, and the front part of the inner peripheral surface is a non-contact surface 21 and the rear part is a support inner peripheral surface 22. ing. Further, a male screw 23 is formed on the outer peripheral surface of the front end portion of the main body case 18.
A female screw 26 that can be screwed into the male screw 23 is formed at the rear part of the inner peripheral surface of the holding case 25, and the holding case 25 can be fixed to the main body case 18 by screwing the female screw 26 into the male screw 23. A support inner peripheral surface (rotation support recess) 27 penetrating the press case 25 in the front-rear direction is formed at the front portion of the press case 25. The support inner peripheral surface 27 has a rotationally symmetric shape whose axis coincides with the central axis A when the presser case 25 is fixed to the main body case 18, and is supported in the support inner surface 27 when the presser case 25 is fixed to the main body case 18. Symmetrically symmetric with the circumferential surface 22. An annular recess 28 is formed in the support inner peripheral surface 27, and a seal ring 29 is fitted in the annular recess 28.

接続部材３０は略前後方向に延びる筒状部材であり、内部には接続部材３０を軸線方向に貫通する貫通孔３１が形成してある。接続部材３０の前端開口部（貫通孔３１の前端部）にはユニバーサルチューブ１３の後端部が嵌合固定してあるので、ユニバーサルチューブ１３の内部と貫通孔３１は互いに連通している。図示するように、接続部材３０の前端開口部には筒状部材である折止ゴム１４の後端部が嵌合固定してある。折止ゴム１４はユニバーサルチューブ１３の後端部の周囲を覆っており、折止ゴム１４の内周面の前部はユニバーサルチューブ１３の外周面に固定してある。
図示するように接続部材３０の後端部は前部に比べて大径かつ略球状をなす球状嵌合部３２となっている。この球状嵌合部３２は回転支持凹部２０（非接触面２１、支持内周面２２）及び支持内周面２７と略同径であり、回転支持凹部２０及び支持内周面２７と嵌合している。球状嵌合部３２を回転支持凹部２０及び支持内周面２７の内部に嵌合するには、押さえケース２５を本体ケース１８から取り外し、この状態で球状嵌合部３２を回転支持凹部２０の内部に嵌合し、球状嵌合部３２の後端部を内部空間１９内に突出させる。そして、この後に押さえケース２５の雌ねじ２６を本体ケース１８の雄ねじ２３に螺合する。このようにすると、球状嵌合部３２の最大径部より小径である押さえケース２５の支持内周面２７が球状嵌合部３２の外周面の前部に接触するので、球状嵌合部３２がコネクタ部１５から前方に抜け出すのが防止される。さらに、図示するように回転支持凹部２０の後端開口部（支持内周面２２の後端部径）は球状嵌合部３２の最大径部より小さいので、球状嵌合部３２全体が内部空間１９内に落ち込むこともない。
このようにして球状嵌合部３２を回転支持凹部２０及び支持内周面２７の内部に嵌合すると、環状凹部２８に嵌合したシールリング２９が球状嵌合部３２の外周面に水密状態で接触するので、押さえケース２５と球状嵌合部３２の間からコネクタ部１５の内部に水や患者の体液などが侵入することはない。 The connecting member 30 is a cylindrical member extending substantially in the front-rear direction, and a through-hole 31 that penetrates the connecting member 30 in the axial direction is formed inside. Since the rear end portion of the universal tube 13 is fitted and fixed to the front end opening of the connecting member 30 (the front end portion of the through hole 31), the inside of the universal tube 13 and the through hole 31 communicate with each other. As shown in the drawing, the rear end portion of the folding rubber 14, which is a cylindrical member, is fitted and fixed to the front end opening of the connection member 30. The folding rubber 14 covers the periphery of the rear end portion of the universal tube 13, and the front portion of the inner circumferential surface of the folding rubber 14 is fixed to the outer circumferential surface of the universal tube 13.
As shown in the drawing, the rear end portion of the connection member 30 is a spherical fitting portion 32 having a larger diameter and a substantially spherical shape than the front portion. The spherical fitting portion 32 has substantially the same diameter as the rotation support concave portion 20 (non-contact surface 21, support inner peripheral surface 22) and support inner peripheral surface 27, and fits with the rotation support concave portion 20 and the support inner peripheral surface 27. ing. In order to fit the spherical fitting portion 32 into the inside of the rotation support recess 20 and the support inner peripheral surface 27, the holding case 25 is removed from the main body case 18, and the spherical fitting portion 32 is placed inside the rotation support recess 20 in this state. And the rear end portion of the spherical fitting portion 32 protrudes into the internal space 19. Thereafter, the female screw 26 of the holding case 25 is screwed into the male screw 23 of the main body case 18. In this case, since the support inner peripheral surface 27 of the holding case 25 having a smaller diameter than the maximum diameter portion of the spherical fitting portion 32 contacts the front portion of the outer peripheral surface of the spherical fitting portion 32, the spherical fitting portion 32 is It is prevented that the connector part 15 is pulled out forward. Further, as shown in the drawing, the rear end opening (the rear end diameter of the support inner peripheral surface 22) of the rotation support recess 20 is smaller than the maximum diameter portion of the spherical fitting portion 32. It doesn't fall into the 19th.
Thus, when the spherical fitting portion 32 is fitted inside the rotation support concave portion 20 and the support inner peripheral surface 27, the seal ring 29 fitted into the annular concave portion 28 is in a watertight state on the outer peripheral surface of the spherical fitting portion 32. Since they are in contact with each other, water, patient body fluid, and the like do not enter the connector portion 15 from between the holding case 25 and the spherical fitting portion 32.

本実施形態では球状嵌合部３２を回転支持凹部２０及び支持内周面２７に嵌合すると、支持内周面２２と支持内周面２７が球状嵌合部３２の外周面に線接触する。球状嵌合部３２と支持内周面２２の接触線は図４にＰ１で示した部分を通りかつ中心軸Ａを中心とする円形であり、球状嵌合部３２と支持内周面２７の接触線は図４にＰ２で示した部分を通りかつ中心軸Ａを中心とする円形である。
このように接続部材３０の球状嵌合部３２と、本体ケース１８（回転支持凹部２０）と、押さえケース２５（支持内周面２７）とによって雲台機構を構成しており、球状嵌合部３２の外周面と支持内周面２２及び支持内周面２７が上記２箇所で常に線接触している。そのため、接続部材３０に外力が掛からないときはコネクタ部１５と接続部材３０の相対位置が保持され、接続部材３０に外力が掛かると接続部材３０がコネクタ部１５に対して球状嵌合部３２を中心に回転する。 In this embodiment, when the spherical fitting portion 32 is fitted to the rotation support concave portion 20 and the support inner peripheral surface 27, the support inner peripheral surface 22 and the support inner peripheral surface 27 are in line contact with the outer peripheral surface of the spherical fitting portion 32. The contact line between the spherical fitting portion 32 and the support inner peripheral surface 22 is a circle that passes through the portion indicated by P1 in FIG. The line passes through the portion indicated by P2 in FIG. 4 and is a circle centered on the central axis A.
As described above, the spherical fitting portion 32 of the connection member 30, the main body case 18 (the rotation support concave portion 20), and the holding case 25 (the support inner peripheral surface 27) constitute a pan head mechanism. The outer peripheral surface 32, the support inner peripheral surface 22 and the support inner peripheral surface 27 are always in line contact with each other at the two locations. Therefore, when no external force is applied to the connection member 30, the relative positions of the connector portion 15 and the connection member 30 are maintained. When an external force is applied to the connection member 30, the connection member 30 forms the spherical fitting portion 32 with respect to the connector portion 15. Rotate to center.

図示するように、接続部材３０の左右両側面には送気送水用口金３３、吸引用口金３４及びアース用口金３５がそれぞれ突設してある。
送気送水用口金３３には、貫通孔３１、ユニバーサルチューブ１３、操作部１１及び挿入部１２の内部を通る送気チューブＴ１と送水チューブＴ２の後端部が接続しており、送気チューブＴ１と送水チューブＴ２の前端部は上記送気孔と送水孔にそれぞれ接続している。図示を省略した送水ボトルから延びるチューブの端部を送気送水用口金３３に接続した上で操作部１１に設けた送気送水ボタンＢ１の開口孔（図示略）を塞ぐと、送水ボトル内の空気が送気チューブＴ１を通って上記送気孔から外部に発射される。また、送気送水ボタンＢ１の開口孔を塞ぎながら送気送水ボタンＢ１を押し操作すると、送水ボトル内の水が送水チューブＴ２を通って上記送水孔から外部に発射される。
吸引用口金３４には、貫通孔３１、ユニバーサルチューブ１３、操作部１１及び挿入部１２の内部を通る吸引チューブＴ３の後端部が接続しており、吸引チューブＴ３の前端部は上記処置具挿通孔（吸引孔）に接続している。図示を省略した吸引源から延びるチューブの端部を吸引用口金３４に接続した上で操作部１１に設けた吸引ボタンＢ２を押し操作すると、吸引源の負圧が吸引チューブＴ３に及ぶので、上記処置具挿通孔（吸引孔）から患者の体液等を吸引できる。
アース用口金３５は、鉗子口から内部管路に挿入する高周波処置具（図示略）から延びるアース線を電子内視鏡１０の外部に引き出すためのものであり、アース線を接地することにより、患者に対し電流が漏れるのを防止できる。 As shown in the drawing, air supply / water supply caps 33, suction caps 34, and grounding caps 35 project from the left and right side surfaces of the connecting member 30.
The air supply tube 33 is connected to the rear end portion of the air supply tube T1 and the water supply tube T2 that pass through the through hole 31, the universal tube 13, the operation portion 11, and the insertion portion 12, and the air supply tube T1. The front end of the water supply tube T2 is connected to the air supply hole and the water supply hole, respectively. When the end of the tube extending from the water supply bottle (not shown) is connected to the air / water supply base 33 and the opening hole (not shown) of the air / water supply button B1 provided in the operation unit 11 is closed, the inside of the water supply bottle Air is emitted to the outside through the air supply tube T1 from the air supply hole. Further, when the air / water supply button B1 is pushed and operated while closing the opening hole of the air / water supply button B1, the water in the water supply bottle is discharged from the water supply hole to the outside through the water supply tube T2.
The suction base 34 is connected to the rear end of the suction tube T3 passing through the through hole 31, the universal tube 13, the operation portion 11 and the insertion portion 12, and the front end of the suction tube T3 is inserted into the treatment instrument. It is connected to a hole (suction hole). Since the negative pressure of the suction source reaches the suction tube T3 when the suction button B2 provided in the operation unit 11 is pushed after the end of the tube extending from the suction source (not shown) is connected to the suction base 34, the above-mentioned The patient's body fluid and the like can be sucked from the treatment instrument insertion hole (suction hole).
The grounding cap 35 is for drawing out a grounding wire extending from a high-frequency treatment instrument (not shown) inserted into the internal conduit from the forceps opening to the outside of the electronic endoscope 10, and by grounding the grounding wire, Current leakage to the patient can be prevented.

図２、図４に示すように、挿入部１２、操作部１１及びユニバーサルチューブ１３の内部管路に沿って延びる可撓性を有する長尺状内蔵物である導光ファイバＬＧＦ、画像信号用ケーブルＣ１、及び画像信号用ケーブルＣ２の一部は貫通孔３１及び内部空間１９の内部に位置している。導光ファイバＬＧＦ、画像信号用ケーブルＣ１、及び画像信号用ケーブルＣ２の貫通孔３１及び内部空間１９の内部に位置する部分は可撓性材料からなる被覆チューブ４０により束ねてあり（図示は省略してあるが被覆チューブ４０の前端は貫通孔３１の前端位置まで達しており、被覆チューブ４０の後端位置は内部空間１９の後端部近傍に位置している）、被覆チューブ４０の外周面全体に金属製のコイル４１が巻き付けてある。このコイル４１はばね性を有しており、接続部材３０の軸線が前後方向に延びる図３及び図５に示す初期位置に位置するとき、画像信号用ケーブルＣ１、画像信号用ケーブルＣ２、導光ファイバＬＧＦ及び被覆チューブ４０を図３及び図５の状態に保持する。   As shown in FIGS. 2 and 4, a light guide fiber LGF, which is a long, long built-in object that extends along the internal conduits of the insertion portion 12, the operation portion 11, and the universal tube 13, and an image signal cable C1 and a part of the image signal cable C2 are located inside the through hole 31 and the internal space 19. The light guide fiber LGF, the image signal cable C1, and the through hole 31 of the image signal cable C2 and the portion located inside the internal space 19 are bundled by a covering tube 40 made of a flexible material (not shown). However, the front end of the covering tube 40 reaches the front end position of the through hole 31, and the rear end position of the covering tube 40 is located in the vicinity of the rear end portion of the internal space 19). A coil 41 made of metal is wound around. The coil 41 has a spring property, and when the axis of the connection member 30 is located at the initial position shown in FIGS. 3 and 5 extending in the front-rear direction, the image signal cable C1, the image signal cable C2, and the light guide. The fiber LGF and the coated tube 40 are held in the state shown in FIGS.

このような構造の電子内視鏡１０はコネクタ部１５に設けた光源用接続スリーブ１６と画像処理用接続スリーブ１７をプロセッサＰに設けた上記接続孔に接続することにより使用可能になる。
術者が接続部材３０が上記初期位置に位置する電子内視鏡１０の操作部１１を持って、操作部１１及び挿入部１２をプロセッサＰに対して相対移動させると、ユニバーサルチューブ１３と折止ゴム１４に曲げ力が掛かるのでユニバーサルチューブ１３と折止ゴム１４が変形する（曲がる）。そして、操作部１１及び挿入部１２の移動量が大きくなり、ユニバーサルチューブ１３と折止ゴム１４の曲げ抵抗力が所定値を超えると上記曲げ力が接続部材３０に及ぶので、雲台機構の働きにより接続部材３０が球状嵌合部３２を中心に回転支持凹部２０及び支持内周面２７に対して回転する。図６は接続部材３０が上側に回転した状態を示しており、図７は接続部材３０が下側に回転した状態を示している。また、図８は接続部材３０が左側に回転した状態を示しており、図９は接続部材３０が右側に回転した状態を示している。図示は省略してあるが、接続部材３０は上下左右以外の様々な方向に回転可能である。そして、操作部１１及び挿入部１２の移動を停止すると、雲台機構の働きによりコネクタ部１５と接続部材３０の相対位置が保持される。 The electronic endoscope 10 having such a structure can be used by connecting the light source connection sleeve 16 and the image processing connection sleeve 17 provided in the connector portion 15 to the connection hole provided in the processor P.
When the operator holds the operation part 11 of the electronic endoscope 10 with the connecting member 30 positioned at the initial position and moves the operation part 11 and the insertion part 12 relative to the processor P, the universal tube 13 and the folding member are fixed. Since a bending force is applied to the rubber 14, the universal tube 13 and the folding rubber 14 are deformed (bent). And when the movement amount of the operation part 11 and the insertion part 12 becomes large and the bending resistance force of the universal tube 13 and the fastening rubber 14 exceeds a predetermined value, the bending force reaches the connecting member 30, so the function of the pan head mechanism Thus, the connection member 30 rotates with respect to the rotation support recess 20 and the support inner peripheral surface 27 around the spherical fitting portion 32. FIG. 6 shows a state where the connecting member 30 is rotated upward, and FIG. 7 shows a state where the connecting member 30 is rotated downward. 8 shows a state where the connecting member 30 is rotated to the left side, and FIG. 9 shows a state where the connecting member 30 is rotated to the right side. Although not shown, the connecting member 30 can rotate in various directions other than up, down, left and right. When the movement of the operation unit 11 and the insertion unit 12 is stopped, the relative position between the connector unit 15 and the connection member 30 is maintained by the action of the pan head mechanism.

このように本実施形態の電子内視鏡１０は、操作部１１及び挿入部１２をプロセッサＰに対して移動させたときに、雲台機構の働きにより接続部材３０がコネクタ部１５に対して回転することによりユニバーサルチューブ１３の後端部の向きを変化させるので、従来の電子内視鏡に比べて小さい力で操作部１１及び挿入部１２をプロセッサＰに対して移動させることが可能であり、操作性が良い。
また、接続部材３０がコネクタ部１５に対して回転すると雲台機構がこの状態を保持するので、術者はこの状態を保持するために大きな力を使う必要がない。そのため、術者は電子内視鏡１０による内視鏡術に集中することができる。
さらに本実施形態の雲台機構は、回転支持凹部（支持内周面２２と支持内周面２７）が球状嵌合部３２の外周面と線接触（円状に接触）するので、球状嵌合部と回転支持凹部の接触態様を面接触にした場合に比べて、球状嵌合部３２と回転支持凹部（支持内周面２２と支持内周面２７）の摩擦抵抗が小さい。そのため、小さいな力で接続部材３０のコネクタ部１５に対する向きを変えることが可能である。 As described above, in the electronic endoscope 10 of the present embodiment, when the operation unit 11 and the insertion unit 12 are moved with respect to the processor P, the connection member 30 rotates with respect to the connector unit 15 by the action of the pan head mechanism. Since the direction of the rear end portion of the universal tube 13 is changed by doing so, it is possible to move the operation unit 11 and the insertion unit 12 with respect to the processor P with a small force compared to the conventional electronic endoscope. Good operability.
Further, when the connecting member 30 rotates with respect to the connector portion 15, the pan head mechanism maintains this state, so that the surgeon does not need to use a large force to maintain this state. Therefore, the operator can concentrate on the endoscopic operation using the electronic endoscope 10.
Furthermore, in the pan head mechanism of the present embodiment, the rotation support recess (the support inner peripheral surface 22 and the support inner peripheral surface 27) is in line contact (circular contact) with the outer peripheral surface of the spherical fitting portion 32. The frictional resistance of the spherical fitting portion 32 and the rotation support recess (support inner peripheral surface 22 and support inner peripheral surface 27) is smaller than when the contact mode between the part and the rotation support recess is a surface contact. Therefore, it is possible to change the direction of the connection member 30 with respect to the connector portion 15 with a small force.

しかも、ユニバーサルチューブ１３、操作部１１及び挿入部１２に内蔵した送気チューブＴ１、送水チューブＴ２及び吸引チューブＴ３の後端部は接続部材３０において終端しているので、接続部材３０が大きく回転しても送気チューブＴ１、送水チューブＴ２及び吸引チューブＴ３が座屈することはない。そのため、操作部１１及び挿入部１２をプロセッサＰに対して大きく相対移動させても、送気、送水、吸引の各動作を円滑に行うことが可能である。   Moreover, since the rear ends of the air supply tube T1, the water supply tube T2, and the suction tube T3 built in the universal tube 13, the operation unit 11, and the insertion unit 12 are terminated at the connection member 30, the connection member 30 rotates greatly. However, the air supply tube T1, the water supply tube T2, and the suction tube T3 do not buckle. Therefore, even if the operation unit 11 and the insertion unit 12 are moved relatively relative to the processor P, it is possible to smoothly perform the operations of air supply, water supply, and suction.

一方、画像信号用ケーブルＣ１、画像信号用ケーブルＣ２及び導光ファイバＬＧＦの一部は内部空間１９及び貫通孔３１に位置しているので、操作部１１及び挿入部１２をプロセッサＰに対して大きく相対移動させると画像信号用ケーブルＣ１、画像信号用ケーブルＣ２及び導光ファイバＬＧＦの当該部分は貫通孔３１及び内部空間１９の内部において大きく変形する。しかし、画像信号用ケーブルＣ１、画像信号用ケーブルＣ２及び導光ファイバＬＧＦは仮に大きく曲がったとしてもそれらの機能を十分に発揮できるので問題はない。
さらに、接続部材３０が上記初期位置から大きく回転したままの状態を維持しながら術者が長時間の内視鏡術を行うと、画像信号用ケーブルＣ１、画像信号用ケーブルＣ２及び導光ファイバＬＧＦにおける貫通孔３１及び内部空間１９の内部に位置する部分に曲げ癖がつくおそれがある。しかし、本実施形態では画像信号用ケーブルＣ１、画像信号用ケーブルＣ２及び導光ファイバＬＧＦの当該部分に被覆チューブ４０を巻きかつ被覆チューブ４０の外周面全体にコイル４１を巻き付けてあるので、仮に接続部材３０が上記初期位置から大きく回転した状態を長時間維持しても、画像信号用ケーブルＣ１、画像信号用ケーブルＣ２及び導光ファイバＬＧＦの当該部分に曲げ癖がつくおそれはない。 On the other hand, part of the image signal cable C1, the image signal cable C2, and the light guide fiber LGF is located in the internal space 19 and the through hole 31, so that the operation unit 11 and the insertion unit 12 are made larger than the processor P. When the relative movement is performed, the image signal cable C 1, the image signal cable C 2, and the portions of the light guide fiber LGF are greatly deformed inside the through hole 31 and the internal space 19. However, even if the image signal cable C1, the image signal cable C2, and the light guide fiber LGF are bent greatly, their functions can be sufficiently exhibited, so there is no problem.
Furthermore, when the surgeon performs endoscopic surgery for a long time while maintaining the state in which the connecting member 30 is largely rotated from the initial position, the image signal cable C1, the image signal cable C2, and the light guide fiber LGF. There is a risk of bending wrinkles at the portions of the through hole 31 and the internal space 19 that are located inside. However, in this embodiment, the coated tube 40 is wound around the image signal cable C1, the image signal cable C2, and the light guide fiber LGF, and the coil 41 is wound around the entire outer peripheral surface of the coated tube 40. Even if the state in which the member 30 is largely rotated from the initial position is maintained for a long time, there is no possibility that the portions of the image signal cable C1, the image signal cable C2, and the light guide fiber LGF are bent.

以上、本発明を上記各実施形態を用いて説明したが、本発明は様々な変更を施しながら実施可能である。
例えば、コネクタ部１５側に球状嵌合部を形成し、接続部材３０側に回転支持凹部を形成することにより、コネクタ部１５と接続部材３０の間に雲台機構を構成してもよい。この場合は、球状嵌合部に内部空間１９と連通する貫通孔を形成し、接続部材３０の貫通孔３１を回転支持凹部と連通させ、内部空間１９、貫通孔及び貫通孔３１の内部に画像信号用ケーブルＣ１、画像信号用ケーブルＣ２、及び導光ファイバＬＧＦ（被覆チューブ４０、コイル４１）を挿通する。
また、電子内視鏡１０に送気チューブＴ１、送水チューブＴ２、吸引チューブＴ３のいずれか一つあるいは二つのみを設けて実施してもよい。
また、球状嵌合部と回転支持凹部の接触態様が面接触や点接触となるように回転支持凹部の形状を変えてもよい。 As mentioned above, although this invention was demonstrated using said each embodiment, this invention can be implemented, giving various changes.
For example, a pan head mechanism may be configured between the connector part 15 and the connection member 30 by forming a spherical fitting part on the connector part 15 side and forming a rotation support recess on the connection member 30 side. In this case, a through hole communicating with the internal space 19 is formed in the spherical fitting portion, the through hole 31 of the connection member 30 is communicated with the rotation support recess, and an image is formed inside the internal space 19, the through hole and the through hole 31. The signal cable C1, the image signal cable C2, and the light guide fiber LGF (coated tube 40, coil 41) are inserted.
Alternatively, the electronic endoscope 10 may be provided with only one or two of the air supply tube T1, the water supply tube T2, and the suction tube T3.
Moreover, you may change the shape of a rotation support recessed part so that the contact aspect of a spherical fitting part and a rotation support recessed part may become a surface contact or a point contact.

また、上記各実施形態では電子内視鏡１０を医療用の内視鏡として実施しているが、医療用以外の内視鏡（工業用内視鏡）として実施することも可能である。   In each of the above embodiments, the electronic endoscope 10 is implemented as a medical endoscope. However, the electronic endoscope 10 may be implemented as an endoscope other than a medical endoscope (industrial endoscope).

本発明の一実施形態の電子内視鏡及びプロセッサの全体図である。1 is an overall view of an electronic endoscope and a processor according to an embodiment of the present invention. 図１のII−II矢線に沿う断面図である。It is sectional drawing which follows the II-II arrow line of FIG. コネクタ部及びユニバーサルチューブの端部の一部を破断して示す側面図である。It is a side view which fractures | ruptures and shows a part of edge part of a connector part and a universal tube. コネクタ部及び接続部材の要部の拡大縦断側面図である。It is an expansion vertical side view of the principal part of a connector part and a connection member. コネクタ部及びユニバーサルチューブの端部の一部を破断して示す平面図である。It is a top view which fractures | ruptures and shows a part of edge part of a connector part and a universal tube. 接続部材がコネクタ部に対して上方に回転したときのコネクタ部、接続部材及びユニバーサルチューブの縦断側面図である。It is a vertical side view of a connector part, a connection member, and a universal tube when a connection member rotates upwards with respect to a connector part. 接続部材がコネクタ部に対して下方に回転したときの図６と同様の縦断側面図である。It is a vertical side view similar to FIG. 6 when a connection member rotates below with respect to a connector part. 接続部材がコネクタ部に対して左方に回転したときのコネクタ部、接続部材及びユニバーサルチューブの横断平面図である。It is a cross-sectional top view of a connector part, a connection member, and a universal tube when a connection member rotates to the left with respect to a connector part. 接続部材がコネクタ部に対して右方に回転したときの図８と同様の横断平面図である。It is a cross-sectional top view similar to FIG. 8 when a connection member rotates rightward with respect to a connector part.

符号の説明Explanation of symbols

１０ 電子内視鏡
１１ 操作部
１２ 挿入部
１３ ユニバーサルチューブ（可撓管）
１４ 折止ゴム
１５ コネクタ部
１６ 光源用接続スリーブ
１７ 画像処理用接続スリーブ
１８ 本体ケース
１９ 内部空間
２０ 回転支持凹部
２１ 非接触面
２２ 支持内周面
２３ 雄ねじ
２５ 押さえケース
２６ 雌ねじ
２７ 支持内周面（回転支持凹部）
２８ 環状凹部
２９ シールリング
３０ 接続部材
３１ 貫通孔
３２ 球状嵌合部
３３ 送気送水用口金（開口端部）
３４ 吸引用口金（開口端部）
３５ アース用口金
４０ 被覆チューブ
４１ コイル
Ｂ１ 送気送水ボタン
Ｂ２ 吸引ボタン
Ｃ１ Ｃ２ 画像信号用ケーブル（長尺状内蔵物）
ＬＧＦ 導光ファイバ（長尺状内蔵物）
Ｔ１ 送気チューブ
Ｔ２ 送水チューブ
Ｔ３ 吸引チューブ
Ｐ プロセッサ（光源装置兼画像処理装置） DESCRIPTION OF SYMBOLS 10 Electronic endoscope 11 Operation part 12 Insertion part 13 Universal tube (flexible tube)
14 Folding rubber 15 Connector portion 16 Light source connection sleeve 17 Image processing connection sleeve 18 Main body case 19 Internal space 20 Rotation support recess 21 Non-contact surface 22 Support inner peripheral surface 23 Male screw 25 Holding case 26 Female screw 27 Support inner peripheral surface ( Rotation support recess)
28 Annular recess 29 Seal ring 30 Connection member 31 Through hole 32 Spherical fitting portion 33 Air supply / water supply base (opening end)
34 Suction cap (opening end)
35 Grounding cap 40 Coated tube 41 Coil B1 Air / water supply button B2 Suction button C1 C2 Image signal cable (long built-in)
LGF light guiding fiber (long built-in)
T1 Air supply tube T2 Water supply tube T3 Suction tube P Processor (light source device and image processing device)

Claims (6)

操作部から挿入部と反対側に延びる可撓管の端部に、光源装置に着脱可能なコネクタ部を備える電子内視鏡において、
上記可撓管の上記端部と上記コネクタ部とを雲台機構を介して接続したことを特徴とする電子内視鏡における可撓管とコネクタ部の接続構造。 In an electronic endoscope provided with a connector part that can be attached to and detached from the light source device at the end of the flexible tube extending from the operation part to the side opposite to the insertion part,
A connection structure between a flexible tube and a connector portion in an electronic endoscope, wherein the end portion of the flexible tube and the connector portion are connected via a pan head mechanism. 請求項１記載の電子内視鏡における可撓管とコネクタ部の接続構造において、
上記雲台機構が、
上記可撓管の上記端部に固定した接続部材と上記コネクタ部との一方に形成した、略球状をなす球状嵌合部と、
他方に凹設した、該球状嵌合部が接触しながら回転可能に嵌合する回転支持凹部と、を備える電子内視鏡における可撓管とコネクタ部の接続構造。 In the connection structure of the flexible tube and the connector part in the electronic endoscope according to claim 1,
The pan head mechanism
A spherical fitting portion having a substantially spherical shape formed on one of the connecting member fixed to the end of the flexible tube and the connector portion;
A connection structure between a flexible tube and a connector portion in an electronic endoscope, comprising: a rotation support recess that is recessed in the other and is rotatably fitted while the spherical fitting portion is in contact. 請求項２記載の電子内視鏡における可撓管とコネクタ部の接続構造において、
上記接続部材に上記球状嵌合部を設け、かつ上記コネクタ部に上記回転支持凹部を形成し、
該球状嵌合部に上記可撓管と連通する貫通孔を形成し、
上記コネクタ部の内部に上記貫通孔と連通する内部空間を形成し、
上記挿入部、操作部及び可撓管の内部管路に配設した、該内部管路に沿って延びる可撓性材料からなる長尺状内蔵物の上記コネクタ部側の端部を、上記貫通孔を通して上記内部空間に位置させ、
上記長尺状内蔵物の周面における上記内部空間及び上記貫通孔に位置する部分に金属製のコイルを巻き付けた電子内視鏡における可撓管とコネクタ部の接続構造。 In the connection structure of the flexible tube and the connector part in the electronic endoscope according to claim 2,
The connecting member is provided with the spherical fitting portion, and the rotation supporting recess is formed in the connector portion,
Forming a through-hole communicating with the flexible tube in the spherical fitting portion;
Forming an internal space communicating with the through hole in the connector portion;
The insertion part, the operation part, and the end part on the connector part side of the long built-in object made of a flexible material extending along the internal pipe line that extends along the internal pipe line pass through the through part. Located in the internal space through the hole,
A connection structure between a flexible tube and a connector portion in an electronic endoscope in which a metal coil is wound around a portion located in the inner space and the through hole on the peripheral surface of the long built-in object. 請求項３記載の電子内視鏡における可撓管とコネクタ部の接続構造において、
上記長尺状内蔵物が複数の線状部材を束ねたものである電子内視鏡における可撓管とコネクタ部の接続構造。 In the connection structure of the flexible tube and connector part in the electronic endoscope according to claim 3,
A connection structure between a flexible tube and a connector part in an electronic endoscope in which the long built-in object is a bundle of a plurality of linear members. 請求項２から４のいずれか１項記載の電子内視鏡における可撓管とコネクタ部の接続構造において、
上記接続部材に、上記可撓管、操作部及び挿入部に内蔵した送気チューブ、送水チューブ及び吸引チューブの少なくともいずれかの開口端部を設けた電子内視鏡における可撓管とコネクタ部の接続構造。 In the connection structure of the flexible tube and connector part in the electronic endoscope according to any one of claims 2 to 4,
The flexible tube and connector portion of the electronic endoscope in which the connecting member is provided with an opening end of at least one of the flexible tube, the air supply tube, the water supply tube, and the suction tube built in the operation portion and the insertion portion. Connection structure. 請求項２から５のいずれか１項記載の電子内視鏡における可撓管とコネクタ部の接続構造において、
上記回転支持凹部の内周面を、上記球状嵌合部と線接触するように構成した電子内視鏡における可撓管とコネクタ部の接続構造。 In the connection structure of the flexible tube and connector part in the electronic endoscope according to any one of claims 2 to 5,
A connection structure between a flexible tube and a connector portion in an electronic endoscope configured such that an inner peripheral surface of the rotation support recess is in line contact with the spherical fitting portion.
JP2008084841A 2008-03-27 2008-03-27 Connection structure of flexible tube to connector section in electronic endoscope Pending JP2009233186A (en)

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