JP2011177383A - Operation wire connecting device of endoscope, and endoscope - Google Patents

Operation wire connecting device of endoscope, and endoscope Download PDF

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JP2011177383A
JP2011177383A JP2010045606A JP2010045606A JP2011177383A JP 2011177383 A JP2011177383 A JP 2011177383A JP 2010045606 A JP2010045606 A JP 2010045606A JP 2010045606 A JP2010045606 A JP 2010045606A JP 2011177383 A JP2011177383 A JP 2011177383A
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member
wire
portion
engaging
male screw
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Yukiko Miyoshi
由希子 三芳
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Fujifilm Corp
富士フイルム株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide operation wire connecting device which can perform rough adjustment with wide pitch and fine adjustment with narrow pitch when adjusting slack of wire. <P>SOLUTION: A connection part 27 comprises; a male screw member 53 firmly fixed with the base end of a following wire 29; an engaging member 54; a pair of connection retaining members 56, 57 connected to each other and maintaining the engaging member 54; ring-shaped members 58, 59 which regulate separation of connection retaining members 56, 57; and a slip-off preventing member 60 firmly fixed with the distal end of traction drive wire 25. In connection retaining members 56, 57, engaging grooves 67a-67d, 68a-68d engaging with the engaging member 54 in a disengageable manner are formed. The engaging grooves 67a-67d, 68a-68d engaging with the engaging member 54 are changed for rough position adjustment. The screwing amount of a male screw 53a of male screw member 53 and a female screw 54a of the engaging member 54 is changed for fine adjustment. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、内視鏡の操作ワイヤ連結装置、及びこれを用いた内視鏡に関する。 The present invention, operating wire connecting device of the endoscope, and an endoscope using the same.

内視鏡は、体内に挿入される挿入部と、挿入部の基端側に設けられた本体操作部からなる形態になっている。 The endoscope is in the form consisting of the main body operation unit provided with the insertion portion inserted into the body, the base end side of the insertion portion. 挿入部は、先端から順に、先端部、湾曲部、及び、可撓管部が設けられている。 Insert, in order from the distal end, the distal end portion, bending portion, and the flexible tube portion. 先端部には、対物レンズ、CCDなどの固体撮像素子、及び、照明用レンズ等が設けられている。 The tip, objective lens, the solid-state imaging device such as CCD, and the illumination lens and the like. 先端部は、各レンズや固体撮像素子を保護するために、硬質な樹脂材料で形成されている。 Tip, in order to protect the lenses and the solid-state imaging device is formed by a hard resin material. 可撓管部は、操作部と湾曲部との間を繋ぐ細径で長尺状な管部であり、可撓性を有している。 Flexible tube portion is a small diameter in elongated tube portion connecting between the bending portion and the operation portion has flexibility. 湾曲部は、本体操作部に設けた操作ノブなどの操作手段を回転操作することで、挿入部内に挿通されたワイヤを進退させることにより上下左右方向のいずれにも湾曲する。 Curved portion, by rotating the operating means such as an operation knob provided on the manipulation section, also curved in either the vertical and horizontal directions by advancing and retracting the inserted through wire insertion portion. これにより、体内への挿入がスムーズになり、また、先端部を体内の所望の方向に向けることができる。 Accordingly, insertion into the body becomes smooth, and can direct the tip portion in a desired direction in the body.

上述したように挿入部内にはワイヤが挿通され、本体操作部には操作手段による回転操作に応じてワイヤを進退させる駆動力伝達機構が内蔵されており、これらは連結部を介して連結されている。 The insertion portion as described above the wire is inserted, the driving force transmission mechanism for advancing and retracting the wire in response to the main body operation portion rotation operation by the operation means has a built, they are connected via a connecting portion there. 従来、ワイヤと駆動力伝達機構の連結部は、操作ワイヤの基端部側にハンダ付けされたネジ付きスリーブと、駆動力伝達機構側に連結されたナット部材とからなり、ネジ付きスリーブの雄ネジとナット部材の雌ネジとを螺合させることにより連結している(例えば、特許文献1)。 Conventionally, coupling of the wire and the driving force transmission mechanism includes a threaded sleeve which is soldered to the base end of the operation wire, it consists of a nut member connected to the driving force transmission mechanism side, the male threaded sleeve It is connected by screwing the female screw of the screw and the nut member (e.g., Patent Document 1).

一方、内視鏡では、挿入部の湾曲操作を繰り返すうちに、操作ワイヤに弛みが生じてくることがある。 On the other hand, in the endoscope, after repeated bending operation of the insertion portion, it may looseness arises in operation wire. そこで、上記特許文献1記載の連結部では、ネジ付きスリーブとナット部材とが螺合する位置(螺じ込み量)を変更してワイヤの弛み調節を行う。 Therefore, in the connecting portion of the Patent Document 1 performs the slack adjustment of the wire and threaded sleeve and the nut member by changing the screwed position (screw Ji write amount).

また、ワイヤの弛みを調節する別の構成としては、例えば特許文献2〜4に記載されており、操作ワイヤの基端部に固定された止め部材、止め部材が装着される係合部材、駆動力伝達機構としてのチェーン部材が連結された連結部材とを備え、連結部材には、係合部材と係合し、操作ワイヤの軸方向に沿って複数連設された円形溝が形成されており、係合部材と係合する円形溝の位置を多段階に変更してワイヤの弛み調節を行うことができる。 Another examples of configurations, for example, described in Patent Documents 2 to 4, the engaging member stopping member fixed to the base end portion of the operation wire, the stop member is mounted to adjust the slack of the wire, the drive and a connecting member chain member is connected as a power transmission mechanism, the coupling member engages the engagement member, a plurality continuously provided by the circular groove along the axial direction of the operating wire is formed , it is possible to perform the slack adjusting wire by changing the position of the circular groove in multiple stages to be engaged with the engaging member. さらにまた、特許文献5では、牽引駆動側ワイヤと、従動側ワイヤとを連結するための連結部材であって、牽引駆動側に固着された外歯ラックと、従動側ワイヤに固着された内歯ラックとからなり、外歯ラックと内歯ラックとが係合する歯の位置関係をずらすことにより、ワイヤの弛み調節を行う構成が記載されている。 Furthermore, internal teeth Patent Document 5, a connection member for connecting a traction drive side wires, and a driven-side wire, and external teeth rack fixed to the traction drive side, which is secured to the driven side wire It consists of a rack, by where the external teeth rack and the inner teeth rack shifting the positional relationship of the teeth that engage, configured to perform the slack adjustment of the wire is described.

実開平4−6724号公報 Real Hei 4-6724 Patent Publication 特開2000−51146号公報 JP 2000-51146 JP 特開2000−51148号公報 JP 2000-51148 JP 特開2008−92968号公報 JP 2008-92968 JP 特開2006−6760号公報 JP 2006-6760 JP

しかしながら、上記特許文献1記載の構成では、操作ワイヤの弛み調節の際、ネジ付きスリーブとナット部材とが螺合する範囲を超える量を調節する場合、ワイヤとネジ付きスリーブとを固定する半田を溶かして付け直さなければならないため、手間と時間が掛かる。 However, in the configuration of Patent Document 1, when the slack adjustment of the operating wire, when adjusting the amount exceeding the range in which the threaded sleeve and the nut member is screwed, the solder for fixing the wire and threaded sleeve since the dissolve must be renumbered, time-consuming and labor.

特許文献2〜4記載の構成では、係合部材が係合する円形溝の位置を変更することで多段階に調節することはできるが、円形溝間のピッチ以下の調節は不可能であり、ワイヤの弛みを精密に調節することができない。 In the configuration of Patent Documents 2 to 4, wherein, although it is possible that the engagement member to adjust in multiple stages by changing the position of the circular groove to be engaged, the regulation of the following pitch between circular grooves is not possible, It can not be precisely adjusted slack in the wire. また、特許文献5記載の構成でも、ラックに形成された歯のピッチ以下の調整はすることができない。 Also, in the configuration of Patent Document 5, wherein the adjustment of the following pitch of teeth formed on the rack can not be.

本発明は上記事情を考慮してなされたものであり、ワイヤの弛み調節を行う際、位置を変更するピッチが広い粗調節と、ピッチが狭い微調節の両方を行うことを可能とする。 The present invention has been made in view of these circumstances, when performing the slack adjustment of the wire, making it possible to perform a wide pitch coarse adjustment to change the position, both narrow pitch fine adjustment.

本発明の内視鏡の操作ワイヤ連結装置は、先端部の向きを変化させるために湾曲する湾曲部及び可撓性を有する軟性部が先端側から順に連設された挿入部の内部に挿通されたワイヤの基端部に固着され、雄ネジが外周に形成された雄ネジ部材と、内周に前記雄ネジと螺合する雌ネジが形成されている係合部材と、互いに結合して前記係合部材を内部に保持する一対の連結保持部材であって、操作手段の操作に伴って発生された駆動力を前記ワイヤに伝達して前記湾曲部を湾曲させる駆動力伝達機構に連結され、前記係合部材と係脱可能に係合し、前記雄ネジ及び雌ネジよりもピッチが大きい複数の係合溝が前記ワイヤの軸方向に沿って並列に形成された一対の連結保持部材とからなることを特徴とする。 Operating wire connecting device of the endoscope of the present invention is inserted inside the insertion portion flexible portion is provided continuously from the distal end side in order to have a curved portion and a flexible curved in order to change the orientation of the tip portion secured to the proximal end of the wire, and the male screw member external thread formed on an outer periphery, an engaging member which the male screw and screwed the female screw on the inner periphery is formed, the bond to each other a pair of connection holding member for holding the engaging member therein, is connected to the driving force generated in association with the operation of the operating means to the driving force transmission mechanism for bending the bending portion is transmitted to the wire, the engagement member and detachably engaged, a pair of connection holding member having a plurality of engaging groove pitch is large is formed in parallel along the axial direction of the wire than the male screw and female screw characterized in that it comprises.

なお、前記一対の連結保持部材の外周に嵌合して前記一対の連結保持部材の分離を規制するリング状部材を備えたことが好ましい。 It is preferable provided with a ring-shaped member for regulating the separation of the pair of connection holding member fitted to the outer periphery of the pair of connection holding member.

また、前記一対の連結保持部材は、一方に形成された係止爪で他方を係止して互いに結合することが好ましい。 Further, the pair of connection holding member is preferably bonded to each other engages the other hand engaging pawl formed on one.

前記駆動力伝達機構は、前記操作手段に連動して回転するプーリと、前記プーリに掛けられた牽引駆動ワイヤとからなり、前記牽引駆動ワイヤの端部に固着された抜け止め部材を備え、前記連結保持部材は、内部に前記抜け止め部材を収納する収納部が設けられており、前記抜け止め部材は、前記収納部内を軸方向に沿って移動自在とすることが好ましい。 The driving force transmission mechanism includes a pulley that rotates in conjunction with the operating means consists of a traction drive wires hung on the pulley, with the anchored retaining member to an end portion of the traction drive wire, the connection holding member accommodating portion for accommodating the retaining member therein is provided, wherein the retaining member is preferably movable with the receiving portion along the axial direction.

本発明の内視鏡は、前記挿入部と、前記ワイヤと、前記操作手段と、前記駆動力伝達機構と、前記挿入部の基端側に設けられ、前記操作手段及び前記駆動力伝達機構が組み込まれた本体操作部と、前記操作ワイヤ連結装置とを備えたことを特徴とする。 The endoscope of the present invention includes the insertion portion, and the wire, and said operating means, and said driving force transmission mechanism, provided at the base end side of the insertion portion, said operating means and said driving force transmission mechanism a built-in main body operation portion, characterized in that a said operating wire connecting device.

本発明によれば、挿入部の内部に挿通されたワイヤの基端部に雄ネジ部材が固着され、この雄ネジ部材の雄ネジと螺合する雌ネジが係合部材に形成されており、駆動力伝達機構に連結された一対の連結保持部材が係合部材を保持し、連結保持部材には、係合部材と係脱可能に係合し、雄ネジ及び雌ネジよりもピッチが大きい複数の係合溝がワイヤの軸方向に沿って並列に形成されているので、係合部材と係合する係合溝の位置を変更することで調節範囲が広い粗調節が可能となり、加えて、係合溝よりピッチが小さい雄ネジ及び雌ネジの螺じ込み量を変更することで、精密な弛み調節を行うことが可能となる。 According to the present invention, it is fixed a male screw member to the proximal end of the wire that is inserted inside the insertion portion, the male screw and screwed the female screw of the male screw member is formed on the engagement member, a pair of connection holding member coupled to the driving force transmission mechanism holds the engaging member, the connection holding member, the engaging member and the engaged disengageably engaged, a plurality of pitches than the male thread and the female thread is greater since the engaging groove of are formed in parallel along the axial direction of the wire, the adjustment range by changing the position of the engagement groove to be engaged with the engaging member enables large coarse adjustment, in addition, by changing the screw Ji write amount of the pitch is smaller male screw and the female screw from the engaging groove, it is possible to perform precise slack adjustment.

電子内視鏡の使用状態を示す説明図である。 It is an explanatory diagram showing a use state of the electronic endoscope. 各ワイヤの接続状態を概略的に示す説明図である。 The connection state of each wire is an explanatory view schematically showing. 操作ノブとワイヤを巻回したプーリとの接続状態を示す要部断面図である。 It is a fragmentary cross-sectional view showing a connection state between the operation knob and the pulley wound with a wire. 連結部の移動をガイドするガイド部材を示す斜視図である。 It is a perspective view showing a guide member for guiding the movement of the connecting portion. プーリの回転に連動して移動する連結部を示す説明図であり、(A)は初期状態、(B)は第1プーリを時計方向に回転したときの連結部の移動方向、(C)は第1プーリを反時計方向に回転したときの連結部の移動方向をそれぞれ示している。 Is an explanatory view showing the connecting portion to move in conjunction with the rotation of the pulley, (A) an initial state, (B) the movement direction of the connecting portion when the rotation of the first pulley in a clockwise direction, (C) is indicates the moving direction of the connecting portion when the rotation of the first pulley in the counterclockwise direction, respectively. 連結部の内部構造を示す要部断面図であり、操作ワイヤの弛み調節が行われていない初期状態を示している。 A main part sectional view showing the internal structure of the connecting portion, shows an initial state in which slack adjustment of the operating wire not performed. 連結部の構成を示す分解斜視図である。 Is an exploded perspective view showing the configuration of the connecting portion. 組み立てられた状態の連結部を示す斜視図である。 Is a perspective view showing the connecting portion of the assembled state. 雄ネジ部材と係合部材との螺じ込み量の変更により微調節を行うときの説明図である。 It is an explanatory view when performing a fine adjustment by screw Ji write amount of change between the male screw member and the engaging member. 連結保持部材を爪結合させる係止爪及び被係止部を形成した第2実施形態の一例を示す分解斜視図である。 The connection holding member is an exploded perspective view showing an example of the second embodiment to form a locking pawl and a locked portion for nail-binding. 第2実施形態の連結部が組み立てられた状態を示す斜視図である。 It is a perspective view showing a state where the connecting portion is assembled to the second embodiment. 両端側に、微調節を行うための雄ネジ及び雌ネジを形成した第3実施形態の一例を示す要部断面図である。 At both ends, it is a fragmentary cross-sectional view showing an example of a third embodiment of forming a male screw and a female screw for performing fine adjustment. ロックナットを備えた連結部の構成の一例を示す要部断面図である。 Is a fragmentary cross-sectional view showing an example of the connecting portion of the configuration with a lock nut.

内視鏡10は、図1に示すように、挿入部11と、挿入部11の基端側に設けられ、手元で操作する操作部12と、ユニバーサルコード13などを備えた細長い形状になっている。 The endoscope 10, as shown in FIG. 1, the insertion portion 11 is provided on the proximal end side of the insertion portion 11, an operation unit 12 for operating at hand, become elongated shape with such universal cord 13 there. 挿入部11は、管状に形成されており、先端から順に、先端部14、湾曲部15、及び、可撓管部16とで構成されている。 The insertion portion 11 is formed in a tubular, in order from the distal end, the distal end portion 14, a bending portion 15, and, and a flexible tube portion 16. 湾曲部15は、上下方向に湾曲操作される湾曲部15aと左右方向に湾曲操作される湾曲部15bとからなる。 Curve 15 is composed of a bending portion 15b which is bending operation the bending portion 15a which is the bending operation in the vertical direction in the left-right direction. ユニバーサルコード13は、一端が操作部12に接続され、他端のコネクター部17がプロセッサ装置18、送気装置(図示せず)、及び、光源装置(図示せず)などに接続される。 Universal cord 13 has one end connected to the operation portion 12, the connector portion 17 is the processor device 18 at the other end, (not shown) air supply unit, and is connected, such as to a light source device (not shown).

先端部14は、硬質な樹脂材料で形成されている。 Tip 14 is formed of a hard resin material. この先端部14の先端面14aには、観察部位からの像光を取り込むための観察窓が設けられている。 The front end surface 14a of the distal end portion 14, an observation window for taking in image light from the observed region are provided. そして、先端部14には、観察窓を介して入射した像光を撮像するCCDなどの固体撮像素子(図示せず)が内蔵されている。 Then, the distal end portion 14, the solid-state image pickup element such as a CCD for capturing the image light incident through the observation window (not shown) is incorporated. プロセッサ装置18は、この固体撮像素子から得られる撮像信号の画像処理を行うとともに、コンポジット信号やコンポーネント信号にエンコードし、その映像信号をモニタ19に出力する。 The processor device 18 performs image processing of the image signal obtained from the solid-state imaging device, and encoded into a composite signal and component signal and outputs the video signal to the monitor 19. これにより、患者の体腔内などを撮影した内視鏡画像がモニタ19に表示される。 Thus, the endoscopic image obtained by photographing the like in the body cavity of the patient is displayed on the monitor 19. 可撓管部16は、細径且つ長尺な管状に形成されるとともに、可撓性を有しており、操作部12と湾曲部15との間を接続する。 Flexible tube portion 16 is formed in a small diameter and long tubular, flexible and has, for connecting between the operation portion 12 and the curved portion 15.

操作部12には、各湾曲部15a,15bを操作するための操作ノブ21,22が設けられている。 The operation unit 12, the operation knob 21 for operating the bending portion 15a, and 15b are provided. 操作ノブ21は、湾曲部15aを上下方向に湾曲させるための操作ノブであり、また、操作ノブ22は、湾曲部15bを左右方向に湾曲させるための操作ノブである。 Operating knob 21 is an operation knob for bending the bending portion 15a in the vertical direction, the operation knob 22 is an operation knob for bending the bending portion 15b in the lateral direction. これら操作ノブ21,22は、操作部12のハウジング20に回動自在に取り付けられている。 These operating knob 21, 22 is rotatably mounted on the housing 20 of the operation unit 12.

図2に示すように、操作部12の内部には、上下及び左右方向の湾曲操作を行うための2つのプーリ23,24が設けられており、各プーリ23,24は、回転軸方向にずらして配置されている(図3参照)。 As shown in FIG. 2, inside the operation portion 12, two pulleys 23 and 24 for performing bending operation of the vertical and horizontal directions are provided, the pulleys 23 and 24, displaced in the axial direction It is arranged Te (see FIG. 3). 各プーリ23,24は、それぞれ操作ノブ21,22に連結されている。 The pulleys 23, 24 are connected to the respective operation knobs 21 and 22.

プーリ23及び湾曲部15aは、操作ワイヤによって連結される。 Pulley 23 and the curved portion 15a are connected by the operating wire. 操作ワイヤは、プーリ23に巻き掛けられる牽引駆動ワイヤ25、及び湾曲部15aに接続される2本の従動ワイヤ29,30である3本のワイヤからなり、牽引駆動ワイヤ25の両端部25a,25bと、従動ワイヤ29,30の基端側の端部29a,30aとが、それぞれ連結部27,28によって連結され、1本の操作ワイヤを構成する。 Operation wire consists of two three wires is a driven wire 29, 30 that are connected traction drive wire 25 wound around the pulleys 23, and the curved portion 15a, both end portions 25a of the traction drive wires 25, 25b When the end portion 29a of the base end side of the driven wire 29 and 30, and the 30a, are connected by respective connecting portions 27 and 28 constitute a single operation wire. 従動ワイヤ29,30のそれぞれの先端側の端部29b,30bは、湾曲部15aの湾曲駒41に接続される。 Each of the distal end portion 29b of the driven wire 29, 30, 30b is connected to the bending piece 41 of the bending portion 15a.

プーリ23及び牽引駆動ワイヤ25は、操作ノブ21の回転操作に伴って発生する駆動力を伝達するための駆動力伝達機構を構成し、操作ノブ21の回転操作に連動してプーリ23が回転し、プーリ23の回転に応じて移動する牽引駆動ワイヤ25が、連結部27,28を介して従動ワイヤ29,30を挿入部11の軸方向に沿って押し引きする。 Pulleys 23 and pulling the drive wire 25 constitute a driving force transmitting mechanism for transmitting the driving force generated by the rotation operation of the operation knob 21, the pulley 23 is rotated in conjunction with rotation of the operating knob 21 , traction drive wire 25 which moves in response to rotation of the pulley 23, to push and pull along the driven wire 29, 30 in the axial direction of the insertion portion 11 via the connecting portions 27 and 28. そして、従動ワイヤ29,30が押し引きされることにより湾曲部15aが上下方向に湾曲動作する。 The curved portion 15a is bent operate in the vertical direction by the driven wire 29, 30 are pushed and pulled. これらのプーリ23、牽引駆動ワイヤ25、連結部27,28、従動ワイヤ29,30が上下方向駆動系を構成する。 These pulleys 23, traction drive wires 25, connecting portions 27 and 28, a driven wire 29, 30 constituting the vertical driving system.

左右方向駆動系の構成も、上下方向駆動系の構成と同様であり、プーリ24、牽引駆動ワイヤ35、連結部36,37、従動ワイヤ38,39から構成される。 Also be configured in the lateral direction drive system is similar to the vertical drive system configuration, the pulley 24, pulling the drive wire 35, the connecting portions 36 and 37, and a driven wire 38. 牽引駆動ワイヤ35の両端35a,35bは、連結部36,37によって、従動ワイヤ38,39のそれぞれ端部38a,39aと連結される。 Both ends 35a of the traction drive wires 35, 35b is maintained by the connection portions 36 and 37, respectively the end 38a of the driven wire 38 and 39, is connected to 39a. 従動ワイヤ38,39の先端側の端部38b,39bは、湾曲部15bの湾曲駒42と接続される。 The distal end side of the end portion 38b of the driven wire 38, 39, 39 b is connected to the bending piece 42 of the bending portion 15b. プーリ24及び牽引駆動ワイヤ35は駆動力伝達機構を構成し、操作ノブ22の回転操作に伴って従動ワイヤ38,39が押し引きされ、湾曲部15bを左右方向に湾曲動作させる。 Pulleys 24 and pulling the drive wire 35 constitute a driving force transmitting mechanism, a driven wire 39 is pushed or pulled with the rotation of the operating knob 22, thereby bending operation the bending portion 15b in the lateral direction.

このように、湾曲部15a,15bを上下方向、左右方向にそれぞれ湾曲動作させることで、先端部14が体内の所望の方向に向けられ、固体撮像素子の撮像範囲を所望の観察部位に向けることができる。 Thus, the curved portion 15a, 15b in the vertical direction, by respectively bending operation in the lateral direction, the tip portion 14 is directed in a desired direction in the body, directing the imaging range of the solid-state imaging device to the desired observation site can.

4つの連結部27,28,36,37は、牽引駆動ワイヤ25,35、従動ワイヤ29,30,38,39の押し引き動作に伴って移動する。 Four connecting portions 27,28,36,37 are traction drive wires 25 and 35, moves with the push and pull operation of the driven wire 29,30,38,39. この移動をガイドするために、操作部12の内部の先端には、図4に示すように、支持部材44が内蔵されている。 To guide this movement, inside the distal end of the operating portion 12, as shown in FIG. 4, the support member 44 is built. 支持部材44には、4つの移動路45〜48が形成されている。 The support member 44, four moving path 45-48 are formed. これら移動路45〜48は、各連結部27,28,36,37を個別に支持し、各々が干渉することを防止する。 These moving path 45-48, the respective connecting portions 27,28,36,37 individually supported, to prevent each interference.

支持部材44は、操作部12のハウジング20の輪郭形状に合わせて、挿入部11に向けて窄まる輪郭形状になっており、これに伴って各移動路45〜48も先端部14に向けて下り勾配の斜面になっている。 Support member 44, in accordance with the contour of the housing 20 of the operation portion 12, serves to outline shape narrowed toward the insertion portion 11, the moving path 45-48 with the also toward the tip portion 14 It has been on the slopes of the down slope. そして、各移動路45〜48には、連結部27,28,36,37の移動量を規制するストッパ部材49がプーリ23,24側にそれぞれ設けられている。 To each moving path 45-48, the stopper member 49 for restricting the movement amount of the coupling portion 27,28,36,37 are respectively provided on the pulley 23 and 24 side.

上下方向駆動系の構成と左右方向駆動系の構成は、ほぼ同様であるので、以下では、上下方向駆動系の構成を例に説明する。 Vertical drive system configuration as in the lateral direction drive system configuration is substantially the same, in the following, the configuration of the vertical driving system as an example. 図5に示すように、プーリ23の回転によって操作ワイヤが押し引きされると、連結部27,28が移動して、各連結部27,28とプーリ23との相対距離が変化する。 As shown in FIG. 5, when pushed and pulled operation wire by the rotation of the pulley 23, connecting portions 27 and 28 is moved, the relative distance changes between the connecting portions 27 and 28 and the pulley 23. 湾曲部15aをストレートにしたときの連結部27,28の位置を、図5(A)に示す位置(初期位置)とすると、図5(B)に示すように、プーリ23が時計方向に回転すると、牽引駆動ワイヤ25の引っ張り側の連結部27がプーリ23に向かって移動し、逆に押し出し側の連結部28は、先端部14に向かって移動する。 Rotating the position of the connecting portions 27 and 28 when the bending portion 15a in a straight, if the position shown in FIG. 5 (A) (initial position), as shown in FIG. 5 (B), the pulley 23 in a clockwise direction then, the tensile side of the connecting portion 27 of the traction drive wire 25 is moved toward the pulley 23, the connecting portion 28 of the extrusion side conversely moves toward the distal end 14. その反対に、図5(C)に示すように、プーリ23が反時計方向に回転すると、連結部27が先端部14に向かって移動し、連結部28がプーリ23に向かって移動する。 On the contrary, as shown in FIG. 5 (C), when the pulley 23 rotates counterclockwise, the connecting portion 27 is moved toward the tip portion 14, connecting portion 28 is moved toward the pulley 23.

図6〜図8に示すように、本発明の操作ワイヤ連結装置としての連結部27は、従動ワイヤ29の基端側(プーリ23側)に固着された雄ネジ部材53と、雄ネジ部材53と螺合する係合部材54と、互いに結合して係合部材54を保持する一対の連結保持部材56,57と、リング状部材58,59と、牽引駆動ワイヤ25の先端側(湾曲部15a側)に固着された抜け止め部材60とからなる。 As shown in FIGS. 6 to 8, the connecting portion 27 of the operating wire connecting apparatus of the present invention includes a male screw member 53 secured to the base end side of the driven wire 29 (the pulley 23 side), the male screw member 53 and an engaging member 54 to be screwed, a pair of connecting the holding members 56 and 57 for holding the engaging member 54 bonded to each other, a ring-shaped member 58 and 59, the distal end side of the traction drive wire 25 (curved portion 15a consisting retaining member 60. fixed to the side).

雄ネジ部材53は、外周に雄ネジ53aを有する略円筒状に形成されている。 Male screw member 53 is formed in a substantially cylindrical shape having a male screw 53a on the outer circumference. この雄ネジ部材53は、先端側の内周面53bが従動ワイヤ29の外径に合わせた内径で、基端側の内周面53cが先端側の内周面53bよりも大きい内径に形成されている。 The male screw member 53, an inner diameter of the inner peripheral surface 53b of the distal end side is matched to the outer diameter of the driven wire 29, the inner circumferential surface 53c of the base end side is formed on the inner diameter larger than the inner circumferential surface 53b of the tip end ing. 従動ワイヤ29の基端部29aは、先端側の内周面53bから雄ネジ部材53に挿通され、基端側の内周面53cにハンダ付けされることにより先端側へ離脱しないように雄ネジ部材53に固着されている。 Proximal end 29a of the driven wire 29 is inserted from the inner peripheral surface 53b of the front end side to the male screw member 53, the male screw so as not to leave distally by being soldered to the inner peripheral surface 53c of the base end side It is secured to the member 53.

係合部材54は、雄ネジ部材53より大きい外径の円筒形状で、内周に雄ネジ53aと螺合する雌ネジ54aが形成されている。 The engaging member 54 is a cylindrical outer diameter larger than the male screw member 53, female screw 54a to be screwed with the male screw 53a on the inner circumference. 操作ワイヤの弛みの精密な調節(微調節)をするときには、雄ネジ53aと雌ネジ54aとが螺合する位置を変更する。 Precise adjustment of sagging of the operation wire when the (fine adjustment) changes the position of the male screw 53a and female screw 54a is screwed.

一対の連結保持部材56,57は、接合面56a,57aを境にして互いに面対称の箱状に形成されており、内部には係合部材54を保持する保持空間61,62が形成されている。 A pair of connection holding members 56 and 57, the bonding surface 56a, 57a is formed in a box shape of plane symmetry with each other in the boundary, with holding space 61 for holding the engagement member 54 therein is formed there. また、連結保持部材56,57は、先端部から軸方向に沿って突出する半円筒部63a,64a、及び後端部から軸方向に沿って突出する半円筒部63b,64bが形成されており、半円筒部63a,63b,64a,64bの内周面は、保持空間61,62に連続しており、牽引駆動ワイヤ25、従動ワイヤ29を挿通させることができる。 Further, the connection holding member 56 and 57, the semi-cylindrical portion 63a that protrudes in the axial direction from the distal end, 64a, and the semi-cylindrical portion 63b which protrudes in the axial direction from the rear end, and 64b is formed , the inner circumferential surface of the semi-cylindrical portion 63a, 63 b, 64a, 64b is continuous with the holding space 61, the traction drive wire 25 can be inserted through the driven wire 29.

保持空間61は、連結保持部材56の内部をそれぞれ略半円柱状に切り欠いた形状で、内側へ凸となる突出部65が所定間隔毎に形成されている。 Holding space 61 is in the form of internally broken away columnar substantially semicircular respective connection holding member 56, the protruding portion 65 that protrudes inwardly is formed at predetermined intervals. 保持空間61の突出部65で区切られた区間のうち、先端側(湾曲部15a側)に近い区間がそれぞれ係合部材54と係脱可能に係合する係合溝67a〜67dとなっている。 Of the separated segments with the projecting portion 65 of the holding space 61, and has a engaging groove 67a~67d the section close to the distal end side (the curved portion 15a side) to engage with the respective engaging member 54 disengage . 係合溝67a〜67dは、従動ワイヤ29の軸方向に沿って並列に形成されている。 Engaging groove 67a~67d are formed in parallel along the axial direction of the driven wire 29. この係合溝67a〜67d間のピッチP1は、上述した雄ネジ53a及び雌ネジ54aのピッチP2よりも大きく形成されている。 The pitch P1 between the engaging groove 67a~67d is larger than the pitch P2 of the male screw 53a and female screw 54a as described above. また、保持空間61のうち、最も基端側(プーリ23側)の区間は、係合溝ではなく、後述する抜け止め部材60を収納する収納部69となっている。 Also, of the holding space 61, the section of the proximal-most (pulley 23 side) is not a engagement groove, and has a housing portion 69 for housing the stop members 60 exit below.

保持空間62は、保持空間61と同様の形状で、突出部65、係合溝67a〜67d、及び収納部69と対称な位置に突出部66、係合溝68a〜68d、及び収納部70が形成されている。 Holding space 62 is the same shape as the holding space 61, the protruding portions 65, the engaging groove 67 a to 67 d, and the storage unit 69 and symmetrical protruding position portion 66, the engaging groove 68a-68d, and the storage unit 70 It is formed. 操作ワイヤの弛みの大まかな調節(粗調節)をするときには、係合部材54が係合する係合溝67a〜67d,68a〜68dの位置を変更することで多段階の位置調節を行うことができる。 When rough adjustment of slack in the operating wire (the coarse adjustment), the engagement groove 67a~67d the engagement member 54 engages, is possible to position adjustment of a multistage by changing the position of 68a~68d it can. なお、係合溝67,68の個数(本実施形態では4個)は限定されるものではなく、係合部材54との係脱により位置調節する段階数に合わせて適宜決定すればよい。 Incidentally, (four in this embodiment) the number of the engaging groove 67, 68 is not limited, may be appropriately determined in accordance with the number of steps of adjusting the position by disengaging the engaging member 54.

抜け止め部材60は、収納部69、70の内径より小さく、半円筒部63b,64bの内周面より大きい外径の略球状で、両端60a,60bが平面に形成され、両端60a,60bを貫通する貫通孔60cが形成されている。 Retaining member 60 is smaller than the inner diameter of the housing portion 69 and 70, the semi-cylindrical portion 63 b, a substantially spherical inner peripheral surface is larger than the outer diameter of 64b, both ends 60a, 60b are formed on the plane, both ends 60a, 60b are through hole 60c that penetrates is formed. 貫通孔60cは、牽引駆動ワイヤ25の外径に合わせた内径となっている。 Through hole 60c has a combined inner diameter to the outer diameter of the traction drive wire 25. また、抜け止め部材60は、軸長すなわち両端60a,60b間の寸法が、収納部69,70の軸長よりも短く形成されている。 Also, retaining member 60, the axial length i.e. ends 60a, the dimension between 60b, is formed shorter than the axial length of the housing portion 69, 70.

抜け止め部材60は、貫通孔60cに牽引駆動ワイヤ25の一方の端部25aが挿通され、ハンダ付けされることにより、牽引駆動ワイヤ25の端部25aが固着される。 Retaining member 60, one end 25a of the traction drive wire 25 in the through hole 60c are inserted, by being soldered, the end 25a of the traction drive wire 25 is fixed. 牽引駆動ワイヤ25の一端に固着された抜け止め部材60は、収納部69,70の内部に収納される。 Retaining member 60 which is fixed to one end of the traction drive wire 25 is housed inside the housing portion 69, 70. これにより、牽引駆動ワイヤ25が連結保持部材56,57から離脱することを規制する。 Accordingly, to regulate the traction drive wire 25 is detached from the connection holding members 56 and 57.

従動ワイヤ29,30を押し引きする際には、引っ張られる側と押し出される側のワイヤの移動量に差が生じて、押し出し側で操作ワイヤが撓んで、操作ワイヤに弛みが生じることが知られている。 When pushing and pulling the driven wire 29 and 30, occurs a difference in moving amount of the side of the wire to be pushed out and side to be pulled, is bent operation wire by an extrusion side, is known to be slack in the operating wire caused ing. 上述したように、抜け止め部材60は、収納部69,70よりも軸長が短いため、収納部69,70の内部を移動して操作ワイヤの移動量の差を吸収する。 As described above, the retaining member 60, since the axial length is shorter than the housing portion 69 and 70, absorbing the difference in the movement amount of the operation wire by moving the inside of the housing portion 69, 70. また、抜け止め部材60は、外周が球面状であることから、収納部69,70の内部を移動しやくすなっている。 Also, retaining member 60, since the outer periphery is spherical, has to and camphor move inside of the housing portion 69, 70.

リング状部材58は、半円筒部63a,64aの外周面に嵌合するように、リング状部材59は、半円筒部63b,64bの外周面に嵌合するようにそれぞれ内周面が形成されている。 Ring-shaped member 58, the semi-cylindrical portion 63a, so as to fit to the outer peripheral surface of 64a, the ring shaped member 59, the semi-cylindrical portions 63 b, respectively inner circumferential surface to be fitted to the outer peripheral surface of the 64b are formed ing. 連結保持部材56,57は、接合面56a,57aを互いに合わせた状態にすると、略角柱状となり、両端の半円筒部63a,64a及び半円筒部63b,64bがそれぞれ繋がって円筒形状になる。 Connection holding members 56 and 57, the bonding surface 56a, when the state 57a to the combined one another, becomes substantially prismatic, semi cylindrical portions 63a at both ends, 64a and the semi-cylindrical portions 63 b, 64b is cylindrical connected respectively. この状態で半円筒部63a,64a及び半円筒部63b,64bにそれぞれリング状部材58,59を嵌合させると、連結保持部材56,57の分離が規制され、連結保持部材56,57及びリング状部材58,59が一体に結合する。 Semi-cylindrical portion 63a in this state, 64a and the semi-cylindrical portions 63 b, respectively when fitting the ring-shaped member 58 and 59 to 64b, the separation of the connection holding member 56, 57 is restricted, the connection holding members 56 and 57 and the ring Jo members 58 and 59 are coupled together.

上述したように、従動ワイヤ29の端部に設けられた係合部材54が、一対の連結保持部材56,57の係合溝67a〜67d,68a〜68dのいずれかに係合し、抜け止め部材60が収納部69,70の内部に収納され、リング状部材58,59を嵌合させて連結保持部材56,57が互いに結合することにより連結部27が組み立てられる。 As described above, the engaging member 54 provided on the end portion of the driven wire 29 engages the engaging groove of the pair of the connection holding member 56, 57 67 a to 67 d, in any one of 68a-68d, retaining member 60 is housed inside the housing portion 69 and 70, the connecting portion 27 is assembled by connecting the holding members 56 and 57 by fitting the ring-shaped member 58 and 59 are coupled to each other. 組み立てられた連結部27は、略角柱状になり、支持部材44の移動路45に沿って移動することができる。 Connecting portion 27 assembled becomes substantially prismatic can move along a travel path 45 of the support member 44.

連結部28も、連結部27と同様に、従動ワイヤ30の基端部30aに固着された雄ネジ部材と、雄ネジ部材と螺合する係合部材と、互いに結合して係合部材を保持する一対の連結保持部材と、連結保持部材の分離を規制するリング状部材と、牽引駆動ワイヤ25の他方の端部25bに固着された抜け止め部材とからなり、係合部材が連結保持部材の係合溝に係合し、抜け止め部材が収納部に収納され、連結保持部材が互いに結合することにより組み立てられる。 Connecting portion 28, similarly to the connecting portion 27, the holding and the male screw member fixed to the base end portion 30a of the driven wire 30, and the engaging member to be screwed with the male screw member, an engagement member attached to one another a pair of connection holding member, connected to the ring-shaped member for regulating the separation of the retaining member consists of a second end portion 25b to the anchored retaining member of the traction drive wire 25, the engaging member connection holding member engages the engaging groove, the retaining member is held in the holding section, assembled by the connection holding members are coupled to each other. 各部材の構成及び機能は、連結部27のそれと同様であるので、説明を省略する。 Since the structure and function of each member is the same as that of the connecting portion 27, the description thereof is omitted.

上記構成の作用を説明する。 Illustrating the operation of the above configuration. 湾曲部15a,15bの湾曲動作を繰り返すうちに、操作ワイヤが常に弛んだ状態(押し出し側、引っ張り側に関係なく)となって、湾曲部15a,15bの湾曲動作の応答が鈍くなる場合がある。 Curved portion 15a, after repeated bending operation of the 15b, the operation state of wire took always slack becomes (extrusion side, tension regardless side), the curved portion 15a, there is a case where the response of 15b bending operation becomes dull . このようなとき、内視鏡10のメンテナンスとして操作ワイヤの弛み調節を行う。 In such a case, performing the slack adjustment of the operating wire as a maintenance of the endoscope 10.

操作ワイヤの弛み調節を行うときには、例えばハウジング20を取り外して、操作部12の内部にアクセスする。 When performing the slack adjustment of the operation wire, for example by removing the housing 20, access to the interior of the operating section 12. そして、牽引駆動ワイヤ25及び従動ワイヤ29に弛みがある場合、リング状部材58,59を連結保持部材56,57から取り外して、連結保持部材56,57による係合部材54の保持を解除する。 When there is slack in the traction drive wire 25 and the driven wires 29, remove the ring-shaped member 58 and 59 from the connection holding members 56 and 57, to release the holding of the engaging member 54 by connecting the holding members 56 and 57. 牽引駆動ワイヤ25及び従動ワイヤ29の弛みに応じて係合部材54が係合する係合溝67a〜67d,68a〜68dのいずれかの位置を変更して粗調節を行う。 Engaging groove 67a~67d the engagement member 54 engages, the coarse adjustment by changing either the position of 68a~68d performed in accordance with the looseness of the traction drive wire 25 and the driven wire 29. このとき、係合部材54は、例えば係合溝67a,68aに係合する初期位置(図6の実線で示す位置)からプーリ側へ2段階移動した係合溝67c,68cの位置(図6の2点鎖線で示す位置)へ係合する位置が変更される。 At this time, the engaging member 54, for example the engagement groove 67a, the initial position to engage the 68a engaging groove has two stages move from the pulley side (the position indicated by the solid line in FIG. 6) 67c, the position of 68c (FIG. 6 position engaging into position) indicated by the two-dot chain line is changed. なお、弛み調節が完全に終わるまで、リング状部材58,59は取り外した状態としておく。 Until slack adjustment have been completed, the ring-shaped member 58, 59 keep a state removed.

係合部材54と係合する係合溝67a〜67d,68a〜68dのいずれかの位置を変更する粗調節では、操作ワイヤの弛みを取り除くことができない場合、図9に示すように、係合部材54を係合溝67a〜67d,68a〜68dから取り外し、雄ネジ53aと雌ネジ54aとが螺合する位置(螺じ込み量)を変更して微調節を行う。 Engaging groove engages with the engaging member 54 67 a to 67 d, a coarse adjustment to change any position 68a-68d, when it is not possible to remove the slack of the operation wire, as shown in FIG. 9, the engagement engagement groove member 54 67 a to 67 d, removed from 68a-68d, to finely adjust by changing the male screw 53a and female screw 54a and is screwed position (screw Ji write amount). なお、図9に示す例では、図6に示す初期状態から雄ネジ部材54がプーリ側へ3ピッチ分移動するように微調節が行われている。 In the example shown in FIG. 9, a male screw member 54 from the initial state shown in FIG. 6 and fine adjustment is performed to move 3 pitches to the pulley side. 雄ネジ53a及び雌ネジ54aは、係合溝67,68よりも小さいピッチで形成されているため、精密な弛み調節を行うことができる。 Male screw 53a and female screw 54a, because they are formed in a pitch smaller than the engagement groove 67 and 68, it is possible to perform precise slack adjustment. そして、牽引駆動ワイヤ25及び従動ワイヤ29の弛み調節を終えたとき、連結保持部材56,57で係合部材54を保持し、且つ抜け止め部材60を収納した状態とし、リング状部材58、59を嵌合させることにより連結部27を組み直した状態とする。 Then, when finishing the slack adjustment of the traction drive wire 25 and the driven wire 29, holds the engaging member 54 at the connection holding members 56 and 57, and and retaining state in which member 60 is housed, the ring-shaped member 58 and 59 a state in which reassemble the connecting portion 27 by causing the fitting.

以上のように、係合部材54と係合する係合溝67a〜67d,68a〜68dの位置を変更することで従来よりも調節範囲が広い多段階の位置調節(粗調節)が可能となり、加えて、係合溝67a〜67d,68a〜68dよりピッチが小さい雄ネジ53a及び雌ネジ54aの螺じ込み量を変更することで、精密な弛み調節を行うことが可能となる。 As described above, the engaging groove 67a~67d to be engaged with the engaging member 54, the position adjustment of the adjustment range is wide multistage than conventional by changing the position of 68a-68d (coarse adjustment) becomes possible, in addition, the engaging groove 67 a to 67 d, by changing the screw Ji write amount of the pitch is smaller male screw 53a and female screw 54a from 68a-68d, it is possible to perform precise slack adjustment. また、組み直しの際、ワイヤのハンダ付け直しを必要としないため、調節に手間と時間が掛からない。 Further, when the reassemble requires no re-soldered wires, labor and time it is not applied in the regulation. さらにまた、雄ネジ部材の加工については、従来のネジ付きスリーブと同様であり、コスト上昇を抑制することができる。 Furthermore, as for a process of the male screw member, the same as the conventional threaded sleeve, it is possible to suppress an increase in cost.

上記第1実施形態においては、リング状部材を嵌合させることにより、一対の連結保持部材の分離を規制して結合させているが、本発明はこれに限るものではなく、以下で説明する本発明の第2実施形態では、一方の連結保持部材に係止爪を設け、他方の連結保持部材に被係止部を設けて互いに爪結合させる構成を例示して説明する。 This in the first embodiment, by fitting the ring-shaped member, although bound to regulate the separation of the pair of the connection holding member, the present invention is not limited thereto, as described below in the second embodiment of the invention, the locking claw on one of the connection holding member is provided, provided with a locked portion on the other of the connection holding member will be exemplified a configuration in which pawl coupled to one another. この第2実施形態では、図10及び図11に示すように、連結部80は、雄ネジ部材53と、係合部材54と、一対の連結保持部材81,82と、抜け止め部材60とからなる。 In the second embodiment, as shown in FIGS. 10 and 11, connecting portion 80 includes a male screw member 53 from the engaging member 54, a pair of connecting the holding members 81 and 82, retaining member 60. Become. なお、上記第1実施形態と同様の部材及び形状については同符号を付して説明を省略する。 Incidentally, the same members and the shape and the first embodiment will be omitted with denoted by the same reference numerals.

連結保持部材82は、箱状の先端及び基端部から連結保持部材81側へ突出する係止爪83が形成されており、連結保持部材81は、係止爪83によって係止される被係止部84が形成されている。 Connection holding member 82 is locking claw 83 projecting from the box-like tip and a proximal end to the connection holding member 81 side is formed, the connection holding member 81, the engageable to be locked by the locking claw 83 stop portion 84 is formed. 被係止部84は、連結保持部材81の先端及び基端の面から一段凹となり、係止爪83が進入する凹部である。 Locked portion 84 is a one-step concave from the surface of the tip and proximal the connection holding member 81, a recess engaging claw 83 enters. また、連結保持部材81,82の先端及び基端部には、内部の保持空間61,62と連続し、牽引駆動ワイヤ25、従動ワイヤ39を挿通させる開口部85,86が形成されている。 Further, the distal end and a proximal end portion of the connection holding member 81, continuous with the interior of the holding space 61, 62, traction drive wire 25, the openings 85 and 86 for inserting the driven wire 39 is formed.

上記第1実施形態と同様に、従動ワイヤ29の端部に設けられた係合部材54が、一対の連結保持部材81,82の係合溝67a〜67d,68a〜68dのいずれかに係合し、抜け止め部材60が収納部69,70の内部に収納され、係止爪83が被係止部84を係止して連結保持部材81、82が互いに爪結合することにより、連結部80が組み立てられる。 Similar to the first embodiment, the engaging member 54 provided on the end portion of the driven wire 29, engagement engaging groove of the pair of the connection holding member 81 and 82 67 a to 67 d, to one of 68a~68d and, by retainer member 60 is housed inside the housing portion 69 and 70, the locking claw 83 connecting the holding members 81 and 82 locks the locked portion 84 are pawl coupled to each other, connecting portion 80 It is assembled. 組み立てられた連結部80は、上記第1実施形態の連結部27と同様の機能を有する。 Assembled connecting unit 80 has the same function as the connecting portion 27 of the first embodiment.

上記第1及び第2実施形態では、従動ワイヤ29と係合部材54との間に雄ネジ部材53を介して、雄ネジ部材53の雄ネジ53aと、係合部材54の雌ネジ54aの螺じ込み量を変更することにより微調節できる構成としているが、これに限定するものではなく、以下で説明する本発明の第3実施形態では、牽引駆動ワイヤ25と抜け止め部材との間にも雄ネジ部材を介して微調節できる構成とする。 In the first and second embodiments, between the driven wire 29 and the engaging member 54 via the male screw member 53, a male screw 53a of the male screw member 53, threaded in the female screw 54a of the engaging member 54 Flip has been configured to be finely adjusted and by changing the write amount, this not limiting, in the third embodiment of the present invention described below, also between the member retaining the traction drive wire 25 a structure that can be finely adjusted through the male screw member. この第3実施形態では、図12に示すように、連結部90は、雄ネジ部材53と、係合部材54と、一対の連結保持部材91,92と、リング状部材58,59と、雄ネジ部材93と、抜け止め部材94とからなる。 In the third embodiment, as shown in FIG. 12, the connecting portion 90 includes a male screw member 53, the engaging member 54, a pair of connecting the holding members 91 and 92, a ring-shaped member 58, the male a screw member 93, consisting of the stop member 94. missing. なお、上記第1実施形態と同様の部材及び形状については同符号を付して説明を省略する。 Incidentally, the same members and the shape and the first embodiment will be omitted with denoted by the same reference numerals.

雄ネジ部材93は、上記第1実施形態の雄ネジ部材53と同様の形状であり、外周に雄ネジ93aが形成され、基端側の内周面93bが牽引駆動ワイヤ25の外径に合わせた内径で、先端側の内周面93cが基端側の内周面93bよりも大きい内径に形成されている。 Male screw member 93 has the same shape as the male screw member 53 of the first embodiment, a male screw 93a is formed on the outer periphery, the inner peripheral surface 93b of the base end conforming to the external diameter of the traction drive wire 25 in inner diameter, the inner peripheral surface 93c of the tip side is formed on the inner diameter larger than the inner circumferential surface 93b of the base end side. 牽引駆動ワイヤ25の端部25aは、内周面93bから雄ネジ部材93に挿通され、内周面93cにハンダ付けされることにより基端側へ離脱しないように雄ネジ部材93に固着されている。 End 25a of the traction drive wire 25 is inserted from the inner peripheral surface 93b on the male screw member 93, is fixed to the male screw member 93 so as not to leave the base end side by being soldered to the inner peripheral surface 93c there. 抜け止め部材94は、内周に雄ネジ93aと螺合する雌ネジ94aが形成されている。 Retaining member 94, a female screw 94a to be screwed with the male screw 93a on the inner circumference.

一対の連結保持部材91,92は、内部に係合空間95、96をそれぞれ備えている。 A pair of connection holding member 91 and 92 includes respective engagement spaces 95 and 96 inside. 係合空間95,96は、上記第1実施形態と同様の係合溝67a〜67d、68a〜68d、収納部97,98が形成されている。 Engaging space 95 and 96, as with the first embodiment of the engaging groove 67 a to 67 d, 68a-68d, housing portion 97 and 98 are formed. また、抜け止め部材94は、軸長が収納部97,98の軸長よりも短く、例えば軸方向中央を膨らませた樽形状に形成されている。 Also, retaining member 94, the axial length is shorter than the axial length of the housing part 97 and 98, for example, formed into a barrel shape with inflated axial center. これにより、抜け止め部材94は、収納部97,98の内部を移動してワイヤの移動量の差を吸収することができる。 Thus, retaining member 94 can be moved inside the housing portion 97, 98 to absorb the difference in the movement amount of the wire.

係合部材54が、係合溝67a〜67d,68a〜68dのいずれかに係合し、抜け止め部材94が収納部97,98に収納され、リング状部材58,59を嵌合させて連結保持部材91,92が互いに結合することにより連結部90が組み立てられる。 Engagement member 54, the engaging groove 67 a to 67 d, engage in any of 68a-68d, the retaining member 94 is held in the holding section 97 and 98, by fitting the ring-like member 58 connected connecting portion 90 is assembled by retaining members 91 and 92 are coupled to each other. 操作ワイヤの弛み調節を行うときには、係合部材54と係合する係合溝67a〜67d,68a〜68dの位置を変更する粗調節とともに、雄ネジ53a及び雌ネジ54aの螺じ込み量、さらに雄ネジ93a及び雌ネジ94aの螺じ込み量を変更する微調節を行うことができる。 When performing the slack adjustment of the operating wire, an engaging groove 67a~67d to be engaged with the engaging member 54, together with the coarse adjustment to change the position of 68a-68d, screw Ji write amount of the male screw 53a and female screw 54a, further it can be finely adjusted to change the screw Ji write amount of the male screw 93a and female screw 94a.

また、図13に示すように、雄ネジ部材53に対する係合部材54の緩み止め対策としてロックナット100を備えた構成としてもよい。 Further, as shown in FIG. 13 may be configured to include a lock nut 100 as loosening measures of the engaging member 54 relative to the male screw member 53. この場合、雄ネジ部材53の軸長は、係合部材54及びロックナット100を螺合させるのに十分な長さを有する。 In this case, the axial length of the male screw member 53 has a length sufficient to screwing the engagement member 54 and the lock nut 100. そして、雄ネジ部材53に、係合部材54及びロックナット100を螺合させるときには、先ず、操作ワイヤの弛み調節に応じた螺じ込み量で、雄ネジ部材53の雄ネジ53aと係合部材54の雌ネジ54aとを螺合させる。 Then, the male screw member 53, when screwing the engagement member 54 and the lock nut 100, first, in screw Ji write amount corresponding to the slack adjustment of the operation wire, the male screw 53a and the engaging member of the male screw member 53 54 screwing with the female screw 54a of the. 次に係合部材54の一方の端面とロックナット100とを対面させるようにしてロックナット100の雌ネジ100aを雄ネジ53aに螺合させる。 Next screwed one end face and the lock nut 100 and the female screw 100a of the lock nut 100 so as to face the engaging member 54 to the male screw 53a. このとき、ロックナット100と係合部材54とを互いに締め合うように螺じ込むと、係合部材54が雄ネジ部材53に対して緩みにくくなる。 At this time, when the lock nut 100 and the engaging member 54 Komu Ji screw as mutually tightened together, the engaging member 54 is hardly loosened with respect to the male screw member 53.

また、ロックナット100を設けた場合、連結保持部材56,57の係合溝67a〜67d,68a〜68dの軸長を、係合部材54の軸長にロックナット100の軸長を足した寸法となるように形成し、雄ネジ部材53に螺合して一体となった係合部材54及びロックナット100が係合溝67a〜67d,68a〜68dのいずれかに係合することが好ましい。 Also, the case of providing the lock nut 100, the engaging groove 67a~67d of the connection holding member 56 and 57, the axial length of 68a-68d, plus the axial length of the lock nut 100 in the axial length of the engaging member 54 Dimensions formed to have a, the engaging member 54 and the lock nut 100 that together screwed to the male screw member 53 engaging groove 67 a to 67 d, it is preferable to engage in any of 68a-68d. さらにまた、ロックナット100は、雄ネジ部材53と係合部材54との螺じ込み量に応じて、プーリ側(図13に示す状態)、湾曲部側のいずれに螺合させるかを選択すればよい。 Furthermore, the lock nut 100, depending on the screw Ji write amount of the male screw member 53 and the engaging member 54, the pulley side (the state shown in FIG. 13), by selecting or screwed to one of the curved side Bayoi. すなわち、係合部材54から雄ネジ53aが露呈する軸長が多い方を選択すれば、ロックナット100の雌ネジ100aを雄ネジ53aに螺合させやすく、高い緩み止め効果を得ることができる。 That is, by selecting whichever axial length male screw 53a is exposed from the engaging member 54 is large, easily screwed to the female screw 100a of the lock nut 100 to the male screw 53a, it is possible to obtain a high locking effect.

上記各実施形態においては、従動ワイヤを押し引きする駆動力伝達機構としてプーリ及び牽引駆動ワイヤからなる構成を例に上げて説明しているが本発明はこれに限らず、例えば、スプロケット及びチェーンからなる駆動力伝達機構を採用してもよい。 In the above embodiments has been described as an example of the structure comprising the pulley and traction drive wire as a driving force transmission mechanism for pushing and pulling the driven wire present invention is not limited to this, for example, from a sprocket and a chain becomes the driving force transmission mechanism may be employed. この場合、駆動力伝達機構を構成するチェーンと、2本の従動ワイヤとを、上記各実施形態と同様の連結部を介して連結し、チェーンが2本の従動ワイヤを押し引きする。 In this case, a chain constituting a driving force transmission mechanism, two and a driven wire, connected via a connecting portion similar to the above embodiments, the chain is pushed and pulled two driven wire.

また、上記各実施形態では、上下方向駆動系と、左右方向駆動系との両方を備えているが、いずれか一方を省略してもよい。 In the above embodiments, the vertical drive system is provided with the both left and right-direction driving system, may be omitted either. また、各駆動系に2つの連結部材を設けているが、いずれか一方を省略してもよい。 Further, is provided with the two coupling members to the driving systems, it may be omitted either. さらに、操作手段として操作ノブを説明しているが、レバー等の操作手段でもよい。 Further, it is assumed that the operation knob as the operation unit, may be a lever or the like. さらにまた、上記各実施形態では、プーリと一対の連結部との間を1本の牽引駆動ワイヤで連結しているが、本発明ではこれに限らず、プーリと一対の連結部材との間を2本の牽引駆動ワイヤで連結してもよい。 Furthermore, in the above embodiment has been connected between the pulley and the pair of connecting portions at one traction drive wire is not limited thereto in the present invention, between the pulley and the pair of connecting members it may be connected by two traction drive wire. この場合には、プーリに二条の溝を設けて、一方の条の溝に一方の牽引駆動ワイヤの一端を、他方の条の溝に他方の牽引駆動ワイヤの一端を各々巻回して取り付ければよい。 In this case, grooves are provided in the two articles to the pulley, one end of one of the traction drive wire groove in one strip, may be attached by turning each wound one end of the other strip other traction drive wire groove in the . さらにまた、2本の牽引駆動ワイヤを取り付けた一対のアームを操作手段の回転操作に連動して回転させて一対の従動ワイヤを押し引きする構成を用いてもよい。 Further, it may be used a configuration in which rotate in conjunction with a pair of arms fitted with two traction drive wire rotation of the operating means for pushing and pulling the pair of driven wire.

上記各実施形態では、電子内視鏡として説明しているが、ファイバスコープ等の光学的手段のみにて観察する内視鏡にも適用可能である。 In each of the above embodiments is described as an electronic endoscope, it is also applicable to an endoscope for observing only by optical means, such as a fiberscope. さらに、観察部位に挿入する挿入部の鉗子チャンネルに挿通した処置具をワイヤで起立させる処置具起立装置にも適用することができる。 Furthermore, it can also be applied was inserted through the forceps channel of the insertion portion to be inserted into the observation site treatment instrument in the treatment instrument raising device for erecting a wire.

10 内視鏡 11 挿入部 15a,15b 湾曲部 12 操作部 21,22 操作ノブ 25,35 牽引駆動ワイヤ 27,28,36,37 連結部(操作ワイヤ連結装置) 10 the endoscope 11 insertion portion 15a, 15b bending portion 12 operating portion 21, 22 operating knob 25, 35 pulling the drive wire 27,28,36,37 connection (operating wire connecting device)
29,30,38,39 従動ワイヤ 53 雄ネジ部材 53a 雄ネジ 54 係合部材 54a 雌ネジ 56,57 連結保持部材 58,59 リング状部材 67a〜67d,68a〜68d 係合溝 29,30,38,39 driven wire 53 male screw member 53a male screw 54 engaging member 54a female thread 56 and 57 connecting the holding members 58, 59 ring-shaped member 67 a to 67 d, 68a-68d engaging groove

Claims (5)

  1. 先端部の向きを変化させるために湾曲する湾曲部及び可撓性を有する軟性部が先端側から順に連設された挿入部の内部に挿通されたワイヤの基端部に固着され、雄ネジが外周に形成された雄ネジ部材と、 Flexible portion having a curved portion and a flexible curved in order to change the direction of the distal end portion is fixed to the proximal end of the wire that is inserted inside the insertion portion provided continuously from the distal end side in order, a male screw a male screw member formed on the outer periphery,
    内周に前記雄ネジと螺合する雌ネジが形成されている係合部材と、 An engaging member which the male screw and screwed the female screw on the inner periphery are formed,
    互いに結合して前記係合部材を内部に保持する一対の連結保持部材であって、操作手段の操作に伴って発生された駆動力を前記ワイヤに伝達して前記湾曲部を湾曲させる駆動力伝達機構に連結され、前記係合部材と係脱可能に係合し、前記雄ネジ及び雌ネジよりもピッチが大きい複数の係合溝が前記ワイヤの軸方向に沿って並列に形成された一対の連結保持部材とからなることを特徴とする内視鏡の操作ワイヤ連結装置。 A pair of connection holding member for holding said engaging member therein bonded to each other, the driving force transmission for bending the bending portion operation driving force generated in association with the operating means is transmitted to the wire coupled to a mechanism, the engagement member and detachably engaged, a pair of which are formed in parallel the male screw and a plurality of engaging groove pitch is greater than the internal thread in the axial direction of the wire operating wire connecting device of an endoscope, characterized by comprising a connection holding member.
  2. 前記一対の連結保持部材の外周に嵌合して前記一対の連結保持部材の分離を規制するリング状部材を備えたことを特徴とする請求項1記載の内視鏡の操作ワイヤ連結装置。 The pair of connection holding member operating wire connecting device of the endoscope according to claim 1, wherein fitted to the outer periphery that includes a ring-shaped member for regulating the separation of the pair of connection holding member.
  3. 前記一対の連結保持部材は、一方に形成された係止爪で他方を係止して互いに結合することを特徴とする請求項1または2記載の内視鏡の操作ワイヤ連結装置。 The pair of connection holding member, the operating wire connecting device of the endoscope according to claim 1 or 2, wherein the binding together locks the other hand engaging pawl formed on one.
  4. 前記駆動力伝達機構は、前記操作手段に連動して回転するプーリと、前記プーリに掛けられた牽引駆動ワイヤとからなり、前記牽引駆動ワイヤの端部に固着された抜け止め部材を備え、前記連結保持部材は、内部に前記抜け止め部材を収納する収納部が設けられており、前記抜け止め部材は、前記収納部内を軸方向に沿って移動自在とすることを特徴とする請求項1ないし3いずれか1項記載の内視鏡の操作ワイヤ連結装置。 The driving force transmission mechanism includes a pulley that rotates in conjunction with the operating means consists of a traction drive wires hung on the pulley, with the anchored retaining member to an end portion of the traction drive wire, the connection holding member accommodating portion for accommodating the retaining member therein is provided, wherein the retaining member is claims 1, characterized in that the freely moving the receiving portion along the axial direction 3 operating wire connecting device of the endoscope according to any one.
  5. 前記挿入部と、前記ワイヤと、前記操作手段と、前記駆動力伝達機構と、前記挿入部の基端側に設けられ、前記操作手段及び前記駆動力伝達機構が組み込まれた本体操作部と、請求項1ないし4いずれか1項記載の前記操作ワイヤ連結装置とを備えたことを特徴とする内視鏡。 And the insertion portion, and the wire, and said operating means, and said driving force transmission mechanism, said provided at the base end side of the insertion portion, the operating means and the main body operation portion to which the driving force transmission mechanism is incorporated, It claims 1 endoscope according to claim 4, further comprising a said operating wire connecting device according to any one.
JP2010045606A 2010-03-02 2010-03-02 Operation wire connecting device of endoscope, and endoscope Withdrawn JP2011177383A (en)

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JP2013180085A (en) * 2012-03-02 2013-09-12 Olympus Medical Systems Corp Endoscope
WO2016189964A1 (en) * 2015-05-28 2016-12-01 オリンパス株式会社 Endoscope

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CN202355392U (en) * 2011-11-30 2012-08-01 深圳市永恒丰塑胶制品有限公司 Endoscope hose control mechanism capable of being bent bidirectionally
JP6157258B2 (en) * 2013-07-26 2017-07-05 オリンパス株式会社 Manipulator and manipulator system

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JPH046724Y2 (en) * 1987-04-01 1992-02-24
CN2492659Y (en) * 2001-08-17 2002-05-22 上海英特罗锁具有限公司 Lock buckle for case
JP2006006760A (en) * 2004-06-29 2006-01-12 Pentax Corp Curving device of endoscope
JP2006087536A (en) * 2004-09-22 2006-04-06 Pentax Corp Bending operation device of endoscope
JP4657054B2 (en) * 2005-08-01 2011-03-23 Hoya株式会社 Treatment instrument raising device of the endoscope
JP4267017B2 (en) * 2006-10-05 2009-05-27 オリンパスメディカルシステムズ株式会社 Endoscope

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013180085A (en) * 2012-03-02 2013-09-12 Olympus Medical Systems Corp Endoscope
WO2016189964A1 (en) * 2015-05-28 2016-12-01 オリンパス株式会社 Endoscope
JP6099853B1 (en) * 2015-05-28 2017-03-22 オリンパス株式会社 Endoscope
US10278567B2 (en) 2015-05-28 2019-05-07 Olympus Corporation Endoscope

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