JP2935475B2 - Endoscope device - Google Patents

Endoscope device

Info

Publication number
JP2935475B2
JP2935475B2 JP2400950A JP40095090A JP2935475B2 JP 2935475 B2 JP2935475 B2 JP 2935475B2 JP 2400950 A JP2400950 A JP 2400950A JP 40095090 A JP40095090 A JP 40095090A JP 2935475 B2 JP2935475 B2 JP 2935475B2
Authority
JP
Japan
Prior art keywords
bending
section
motor
bending operation
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2400950A
Other languages
Japanese (ja)
Other versions
JPH04210039A (en
Inventor
明 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Corp
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Filing date
Publication date
Application filed by Olympus Corp filed Critical Olympus Corp
Priority to JP2400950A priority Critical patent/JP2935475B2/en
Publication of JPH04210039A publication Critical patent/JPH04210039A/en
Application granted granted Critical
Publication of JP2935475B2 publication Critical patent/JP2935475B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
    • A61B1/0052—Constructional details of control elements, e.g. handles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00039—Operational features of endoscopes provided with input arrangements for the user
    • A61B1/00042—Operational features of endoscopes provided with input arrangements for the user for mechanical operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00147—Holding or positioning arrangements
    • A61B1/0016—Holding or positioning arrangements using motor drive units
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
    • A61B1/0057—Constructional details of force transmission elements, e.g. control wires

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Optics & Photonics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は、挿入部先端に設けた湾
曲部の湾曲状態をゆるやかに復帰させる内視鏡装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope apparatus for gradually returning a curved state of a bending section provided at the distal end of an insertion section.

【０００２】[0002]

【従来の技術】最近、例えば特開昭６１−１２２６１９
号公報に開示されているように、内視鏡の湾曲操作部に
駆動手段であるモータを組込み、このモータで湾曲操作
用の牽引部材を牽引し、挿入部先端側に設けた湾曲部を
手元側で遠隔操作できるようにしたものがある。2. Description of the Related Art Recently, for example, Japanese Unexamined Patent Application Publication No.
As disclosed in Japanese Patent Application Laid-Open Publication No. H10-207, a motor serving as a driving means is incorporated in a bending operation section of an endoscope, and a towing member for bending operation is pulled by this motor, and a bending section provided on the distal end side of the insertion section is at hand. There is one that can be remotely controlled on the side.

【０００３】このようなモータ駆動により湾曲操作する
内視鏡では湾曲状態をモータの動力を伝達するギヤなど
の比較的大きな減速比によって維持されているが、この
内視鏡を患者の体腔より抜き差しする場合、上記湾曲部
を一担フリーにして、この湾曲部を体腔内壁面に沿って
可撓自在にする必要がある。[0003] In such an endoscope that performs a bending operation by driving a motor, the bending state is maintained by a relatively large reduction ratio such as a gear that transmits the power of the motor. In this case, it is necessary to make the bending portion free and to make the bending portion flexible along the inner wall surface of the body cavity.

【０００４】例えば、特開昭５３−３９６８５号公報に
は、上記湾曲部を湾曲させる牽引手段の中途にクラッチ
手段を介装し、内視鏡挿入部を患者の体腔から抜き差し
する際に、上記クラッチ手段により上記牽引手段の中途
を離間し、上記挿入部先端側の湾曲部をフリーにする技
術が開示されている。[0004] For example, Japanese Patent Application Laid-Open No. 53-39685 discloses that, when a clutch means is interposed in the middle of the traction means for bending the bending section, when inserting and removing the endoscope insertion section from the patient's body cavity, There is disclosed a technique in which a middle portion of the traction means is separated by a clutch means, and a curved portion on the distal end side of the insertion portion is free.

【０００５】[0005]

【発明が解決しようとする課題】ところで、湾曲時の上
記湾曲部には復元力が反力として常時付勢されており、
上記クラッチ手段により上記牽引手段の中途を離間する
と、上記湾曲部が急激に復元しようとして上記体腔内壁
面の粘膜などに過大な負荷を印加してしまう可能性があ
る。By the way, a restoring force is always urged as a reaction force to the bending portion at the time of bending,
When the middle of the traction means is separated by the clutch means, there is a possibility that an excessive load is applied to the mucous membrane or the like on the inner wall surface of the body cavity due to the sudden recovery of the curved portion.

【０００６】本発明は上記事情に鑑みてなされたもの
で、湾曲部の湾曲状態を解除すべく牽引手段の中途を離
間しても上記湾曲部が急激に復元動作することのない内
視鏡装置を提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an endoscope apparatus in which the bent portion does not suddenly perform a restoring operation even when the traction means is separated in order to release the bent state of the bent portion. It is intended to provide.

【０００７】[0007]

【課題を解決するための手段】本発明による内視鏡装置
は、操作部に連設する挿入部の先端側に設けた湾曲部
と、上記湾曲部の湾曲動作を行う駆動手段と、この駆動
手段の駆動力を伝達し、上記湾曲部を湾曲される牽引手
段と、この牽引手段の中途に設けて駆動力の伝達を解除
するクラッチ手段と、上記クラッチ手段と上記湾曲部と
の間の上記牽引手段に介装して、この牽引手段の動作を
緩慢にする調整手段とを備えるものである。An endoscope apparatus according to the present invention comprises a bending portion provided on the distal end side of an insertion portion connected to an operating portion, a driving means for performing the bending operation of the bending portion, and a driving device for driving the bending portion. Traction means for transmitting the driving force of the means, and the bending portion being bent, a clutch means provided in the middle of the traction means to cancel the transmission of the driving force, and the traction means provided between the clutch means and the bending portion. An adjusting means interposed in the towing means for slowing down the operation of the towing means.

【０００８】[0008]

【作用】上記構成において、駆動手段により、この操作
部に連設する挿入部の先端側に設けた湾曲部を牽引手段
を介して湾曲させた後、この湾曲部を復元させるべく上
記牽引手段の中途に設けたクラッチ手段にて上記牽引手
段の動力伝達を解除すると、上記クラッチ手段と上記湾
曲部との間の上記牽引手段に介装した調整手段が上記湾
曲部の復元動作により移動しようとする上記牽引手段の
動作を抑制する。その結果、上記湾曲部の復元動作が緩
慢になる。In the above construction, after the drive means bends a curved portion provided on the distal end side of the insertion portion connected to the operating portion via the traction means, the traction means is restored to restore the curved portion. When the power transmission of the traction means is released by the clutch means provided halfway, the adjustment means interposed in the traction means between the clutch means and the bending portion tends to move by the restoration operation of the bending portion. The operation of the traction means is suppressed. As a result, the operation of restoring the curved portion becomes slow.

【０００９】[0009]

【実施例】以下、図面に基づいて本発明の実施例を説明
する。Embodiments of the present invention will be described below with reference to the drawings.

【００１０】図１〜図５は本発明の第一実施例を示し、
図１は操作部の縦断面図、図２は図１のII−II断面図、
図３は図１のIII 矢視図、図４は図１のIV−IV断面図、
図５は内視鏡装置の概略図である。FIGS. 1 to 5 show a first embodiment of the present invention.
1 is a longitudinal sectional view of the operation unit, FIG. 2 is a II-II sectional view of FIG. 1,
3 is a view taken in the direction of the arrow III in FIG. 1, FIG. 4 is a sectional view taken along the line IV-IV in FIG.
FIG. 5 is a schematic diagram of the endoscope apparatus.

【００１１】[0011]

【構成】図５に示すように、内視鏡装置１が固体撮像素
子などの撮像手段（図示せず）を内蔵した電子内視鏡２
と、この電子内視鏡２に照明光を供給する光源装置３
と、上記電子内視鏡２からの出力信号を入力し、テレビ
信号に変換して出力するテレビ信号化回路手段を備えた
信号処理装置４と、この信号処理装置４のテレビ信号を
映像として表示するモニタ５とを備えている。As shown in FIG. 5, an endoscope apparatus 1 includes an electronic endoscope 2 having built-in image pickup means (not shown) such as a solid-state image pickup device.
And a light source device 3 for supplying illumination light to the electronic endoscope 2.
And a signal processing device 4 having a television signal converting circuit means for inputting an output signal from the electronic endoscope 2, converting the signal into a television signal and outputting the television signal, and displaying the television signal of the signal processing device 4 as an image. And a monitor 5 for performing the operations.

【００１２】上記電子内視鏡２が細長の可撓性を有する
挿入部６と、この挿入部６の後端側に連設する操作部７
と、この操作部７から延出する２本のユニバーサルコー
ド８，９とを有し、一方のユニバーサルコード８の端部
に、上記信号処理装置４の前面に設けたコネクタ受け１
０に接続自在な信号用コネクタ１１が設けられ、また、
他方のユニバーサルコード９の先端に、上記光源装置３
の前面に設けたコネクタ受け１２に接続自在な光源用コ
ネクタ１３が設けられている。The electronic endoscope 2 has an elongated flexible insertion portion 6 and an operation portion 7 connected to the rear end of the insertion portion 6.
And two universal cords 8 and 9 extending from the operation unit 7. One end of one universal cord 8 has a connector receiver 1 provided on the front surface of the signal processing device 4.
0 is provided with a signal connector 11 which can be connected freely.
The light source device 3 is attached to the end of the other universal cord 9.
A light source connector 13 is provided which can be connected to a connector receiver 12 provided on the front surface of the light source.

【００１３】図１に示すように、上記操作部７が上記挿
入部６に連設する把持部１４と、この把持部１４の後に
連設する操作部本体１５とからなり、この操作部本体１
５の頭部側端面に、スイッチボックス１６を取付自在な
接続座１７が設けられている。なお、このスイッチボッ
クス１６には、湾曲操作釦（図示せず）が設けられてい
る。As shown in FIG. 1, the operating section 7 is composed of a holding section 14 connected to the insertion section 6 and an operating section main body 15 connected after the holding section 14.
A connection seat 17 to which a switch box 16 can be attached is provided on the head-side end surface of the head 5. The switch box 16 is provided with a bending operation button (not shown).

【００１４】この接続座１７は筒状をなし、上記操作部
本体１５の内側に配設する支持金具１８にビス１９、ナ
ット２０、および、このビス１９を挿通する絶縁ブッシ
ュ２１を介して挟着固定されている。The connection seat 17 has a cylindrical shape, and is clamped by a screw 19, a nut 20, and an insulating bush 21 through which the screw 19 is inserted into a support fitting 18 disposed inside the operation section main body 15. Fixed.

【００１５】また、上記操作部７に湾曲操作装置２２が
内蔵されている。この湾曲操作装置２２のベースプレー
ト２３が、上記操作部７のほぼ中心部分に、この操作部
７の延出方向に沿って配設され、このベースプレート２
３の一端に形成した固定座２３ａが、上記支持金具１８
に曲げ形成したフランジ１８ａにネジ止めされている。
なお、このベースプレート２３と上記接続座１７とは絶
縁ブッシュ２１を介して互いに絶縁され、また、上記操
作部１４の上記操作部本体１５側にある上記ベースプレ
ート２３に軸体２５を介してスプロケット２６が軸装さ
れており、このスプロケット２６にクラッチ手段２７を
介してドリブンギヤ２８が対設され、このドリブンギヤ
２８が上記操作部本体１５あるいは上記ベースプレート
２３に固設された駆動手段の一例であるモータ２９のス
ピンドル２９ａに軸着されたドライブギヤ３６に噛合さ
れている。The operation section 7 has a bending operation device 22 built therein. A base plate 23 of the bending operation device 22 is disposed substantially at the center of the operation section 7 along the extending direction of the operation section 7.
3 is fixed to one end of the support bracket 18.
And is screwed to a flange 18a formed by bending.
In addition, the base plate 23 and the connection seat 17 are insulated from each other via an insulating bush 21, and a sprocket 26 is mounted on the base plate 23 on the operation section main body 15 side of the operation section 14 via a shaft 25. A driven gear 28 is mounted on the sprocket 26 via a clutch means 27, and the driven gear 28 is a motor 29 which is an example of a driving means fixed to the operating section body 15 or the base plate 23. The drive gear 36 is engaged with the spindle 29a.

【００１６】上記モータ２９の回転力がクラッチ手段２
６などを介してスプロケット２６に伝達されると、この
スプロケット２６に巻装するチェーン３１が牽引され
る。なお、このモータ２９は上記操作部本体１５に取付
けたスイッチボックス１６に設けた湾曲操作釦（図示せ
ず）で操作する。The rotational force of the motor 29 is applied to the clutch 2
When the chain 31 is transmitted to the sprocket 26 via the sprocket 6, the chain 31 wound around the sprocket 26 is pulled. The motor 29 is operated by a bending operation button (not shown) provided on the switch box 16 attached to the operation section main body 15.

【００１７】また、上記ベースプレート２３の上記把持
部１４に突出した側の上面に、断面Ｕ字状の隔壁部材２
２がその中間辺を介して押え板３３により上記ベースプ
レート２３の長手方向に沿って取付固定されている。さ
らに、上記隔壁部材３２の両側辺に、断面Ｕ字状のガイ
ド部材３４が対設され、このガイド部材３４の一端が上
記ベースプレート２３に立設した支柱３５に固設され、
他端の中途部分がスペーサ３６を介して上記ベースプレ
ート２３に固定されている。A partition member 2 having a U-shaped cross section is provided on the upper surface of the base plate 23 on the side protruding from the grip portion 14.
2 is attached and fixed along the longitudinal direction of the base plate 23 by a holding plate 33 via the intermediate side. Further, a guide member 34 having a U-shaped cross section is provided on both sides of the partition member 32, and one end of the guide member 34 is fixed to a column 35 erected on the base plate 23,
An intermediate portion of the other end is fixed to the base plate 23 via a spacer 36.

【００１８】また、上記ベースプレート２３上に、上記
隔壁部材３２の両側辺と上記ガイド部材３４との間、お
よび、上記軸体２５に至るまでの区間が板部材３７で覆
われており、この板部材３７の中途が上記スペーサ３
６、上記支柱３５を介して上記ベースプレート２３に共
締めされている。さらに、上記軸体２５に軸支されたス
プロケット２６が上記板部材３７の端部に連続するとと
もに、周辺を上記ベースプレート２３に固設するスプロ
ケットカバー３８で覆われている。なお、上記隔壁部材
３２、ガイド部材３４、板部材３７で上記ベースプレー
ト２３上に牽引通路３９が形成されている。On the base plate 23, a section between both sides of the partition member 32 and the guide member 34 and a section up to the shaft body 25 are covered with a plate member 37. The middle of the member 37 is the spacer 3
6. It is fastened to the base plate 23 via the support 35. Further, the sprocket 26 pivotally supported by the shaft body 25 continues to the end of the plate member 37, and its periphery is covered by a sprocket cover 38 fixed to the base plate 23. In addition, a towing passage 39 is formed on the base plate 23 by the partition member 32, the guide member 34, and the plate member 37.

【００１９】また、上記ベースプレート２３の上記把持
部１４側の端部に、上記隔壁部材３２の端面に対向する
コイルパイプ受け４０が曲げ形成されている。このコイ
ルパイプ受け４０の上記牽引通路３９に対向する部分に
パイプ支持部材４１が嵌着固定されており、このパイプ
支持部材４１にコイルパイプ４２が装着固定されてい
る。At the end of the base plate 23 on the side of the grip portion 14, a coil pipe receiver 40 facing the end face of the partition member 32 is formed by bending. A pipe support member 41 is fitted and fixed to a portion of the coil pipe receiver 40 facing the traction passage 39, and a coil pipe 42 is mounted and fixed to the pipe support member 41.

【００２０】このコイルパイプ４２に湾曲操作ワイヤ４
３が挿通され、この湾曲操作ワイヤ４３の先端が、上記
挿入部６の先端側に設けた湾曲部６ａに組み込まれて、
この湾曲部６ａを湾曲動作させる湾曲駒（図示せず）に
連結され、一方、上記牽引通路３９へ導かれている上記
湾曲操作ワイヤ４３の基端が、中途を上記スプロケット
２６に嵌挿する上記チェーン３１の端部に連設部材４４
を介して連結されている。The bending operation wire 4 is attached to the coil pipe 42.
3 is inserted, and the distal end of the bending operation wire 43 is incorporated into the bending portion 6a provided on the distal side of the insertion portion 6,
The proximal end of the bending operation wire 43 that is connected to a bending piece (not shown) that causes the bending portion 6a to perform a bending operation, and that is inserted into the sprocket 26 in the middle of the bending operation wire 43 guided to the pulling passage 39. A continuous member 44 is attached to the end of the chain 31.
Are connected via

【００２１】この連結部材４４が上記牽引通路３９にス
ライド自在に挿通されており、この連結部材４４の幅方
向（図１の紙面奥行き方向）への移動が上記ベースプレ
ート２３と上記板部材３７との間で規制され、また、高
さ方向（図１の上下方向）への移動が上記隔壁部材３２
の側辺と上記ガイド部材３４のＵ字状に曲げ形成した側
端面との間で規制されている。なお、上記スピンドル２
９ａ，スプケロット２６，ドリブンギヤ２８，ドライブ
ギヤ３０，チェーン３１，湾曲操作ワイヤ４３，連結部
材４４で牽引手段４６が構成されている。The connecting member 44 is slidably inserted into the towing passage 39, and the movement of the connecting member 44 in the width direction (the depth direction in the drawing of FIG. 1) causes the movement of the base plate 23 and the plate member 37. Movement in the height direction (vertical direction in FIG. 1).
Of the guide member 34 and the side end surface of the guide member 34 formed in a U-shape. The spindle 2
9a, the sprocket 26, the driven gear 28, the drive gear 30, the chain 31, the bending operation wire 43, and the connecting member 44 constitute a traction means 46.

【００２２】また、上記連結部材４４の上記湾曲操作ワ
イヤ４３側の端面に衝突部材４５が併設されており、こ
の衝突部材４５の一側に形成された衝突部４５ａが上記
ガイド部材３４のＵ字状に形成した溝に係入されてい
る。一方、上記ガイド部材３４の図１の右方向に、衝突
部４５ａを係止するストッパ３４ａが曲げ形成されてお
り、この衝突部４５ａが上記ストッパ３４ａに係止され
た位置が上記湾曲部６ａの最大湾曲角となる。Further, a collision member 45 is provided on an end surface of the connecting member 44 on the side of the bending operation wire 43, and a collision portion 45a formed on one side of the collision member 45 is formed in a U-shape of the guide member 34. It is engaged in the groove formed in the shape. On the other hand, a stopper 34a for locking the collision portion 45a is formed to be bent to the right in FIG. 1 of the guide member 34, and the position where the collision portion 45a is locked to the stopper 34a is the position of the curved portion 6a. It becomes the maximum bending angle.

【００２３】なお、通常の最大湾曲角は上記モータ２９
の回転量によって制御するが一時的にこのモータ２９が
暴走した場合などを考慮して上記衝突部材４５およびス
トッパ３４ａを設けている。The normal maximum bending angle is determined by the motor 29
The collision member 45 and the stopper 34a are provided in consideration of the case where the motor 29 runs out of control temporarily.

【００２４】また、符号４７は調整手段で、この調整手
段４７の半円形状に形成した押え板４８が上記コイルパ
イプ受け４０側の上記湾曲操作ワイヤ４３を跨いで上記
ベースプレート２３に固設され、この押え板４９とベー
スプレート２４とで上記湾曲操作ワイヤ４３に挿通した
Ｏリングなどの弾性部材４９が挟持されている。Reference numeral 47 denotes an adjusting means, and a semicircular pressing plate 48 of the adjusting means 47 is fixed to the base plate 23 across the bending operation wire 43 on the coil pipe receiver 40 side. An elastic member 49 such as an O-ring inserted through the bending operation wire 43 is sandwiched between the pressing plate 49 and the base plate 24.

【００２５】上記湾曲操作ワイヤ４３を移動させる際
に、上記弾性部材４９にて、この湾曲操作ワイヤ４３に
適度な摩擦力が印加される。When the bending operation wire 43 is moved, an appropriate frictional force is applied to the bending operation wire 43 by the elastic member 49.

【００２６】[0026]

【作用】次に、上記構成による実施例の作用について説
明する。Next, the operation of the embodiment having the above configuration will be described.

【００２７】電子内視鏡２の挿入部６を体腔内に挿入
し、モニタ５の画像を観察しながら操作部７の操作部本
体１５に取付けたスイッチボックス１６の湾曲操作釦
（図示せず）を押すと、上記操作部本体１５に内蔵した
モータ２９が回転し、このモータ２９のスピンドル２９
ａに軸着されたドライブギヤ３０に噛合するドリブンギ
ヤ２８、クラッチ手段２７、スプロケット２６を介して
チェーン３１が輪転し、このチェーン３１の両端に連結
部材４４を介して連設する湾曲操作ワイヤ４３の一方が
牽引され、他方が送り出される。The insertion section 6 of the electronic endoscope 2 is inserted into a body cavity, and a bending operation button (not shown) of a switch box 16 attached to the operation section main body 15 of the operation section 7 while observing an image on the monitor 5. Is pressed, the motor 29 built in the operation section main body 15 rotates, and the spindle 29 of the motor 29 is rotated.
The chain 31 rotates through the driven gear 28, the clutch means 27, and the sprocket 26 that mesh with the drive gear 30 that is axially mounted on the drive gear 30, and the bending operation wire 43 that is connected to both ends of the chain 31 through the connecting member 44 is connected. One is towed and the other is sent out.

【００２８】すると、上記湾曲操作ワイヤ４３に連設す
る上記挿入部６の湾曲部６ａに配設した湾曲駒（図示せ
ず）が上記湾曲操作ワイヤ４３の牽引方向へ引かれ上記
湾曲部６ａが同方向へ湾曲する。Then, a bending piece (not shown) disposed on the bending portion 6a of the insertion portion 6 connected to the bending operation wire 43 is pulled in the direction in which the bending operation wire 43 is pulled, and the bending portion 6a is pulled. Curves in the same direction.

【００２９】このとき、例えば、上記モータ２９の制御
系が一時的に暴走し制御不能となった場合でも、上記連
結部材４４の上記湾曲操作ワイヤ４３側の端面に併設す
る衝突部材４５の衝突部４５ａが上記連結部材４４をガ
ードする牽引通路３９をなすガイド部材３４に形成した
ストッパ３４ａに係止されて湾曲動作が停止されるた
め、湾曲部６ａが予め設定した最大湾曲角以上に湾曲す
ることはない。At this time, for example, even if the control system of the motor 29 runs out of control temporarily and becomes uncontrollable, the collision portion of the collision member 45 attached to the end face of the connecting member 44 on the bending operation wire 43 side is used. Since the bending operation is stopped by the stopper 45a formed on the guide member 34 forming the traction passage 39 for guarding the connecting member 44, the bending portion 6a bends at a predetermined maximum bending angle or more. There is no.

【００３０】そして、所定部位を検査、あるいは、処置
した後、上記挿入部６を体腔内にて抜き差しする場合、
上記操作部本体１５に設けたクラッチフリー釦（図示せ
ず）を押すと上記ドリブンギヤ２８とスプロケット２６
との間を連結するクラッチ手段２７の接続が解かれ、上
記湾曲部６ａが自己の復元作用によりニュートラルへ復
帰動作しようとする。When the insertion portion 6 is removed and inserted into the body cavity after inspecting or treating a predetermined site,
When a clutch free button (not shown) provided on the operation section main body 15 is pressed, the driven gear 28 and the sprocket 26 are pressed.
The connection of the clutch means 27 is released, and the bending portion 6a attempts to return to neutral by its own restoring action.

【００３１】すると、上記チェーン３１の両端に連設す
る湾曲操作ワイヤ４３が上記湾曲部６ａの復元動作に伴
い相対移動するが、この湾曲操作ワイヤ４３が上記操作
部７の把持部１４側に設けたコイルパイプ受け４０の近
傍に配設した調整部材４７の弾性部材４９に挟着されて
いるため、この弾性部材４９の摩擦力で上記湾曲部６ａ
はゆっくりとニュートラルに復元する。Then, the bending operation wires 43 connected to both ends of the chain 31 relatively move with the restoring operation of the bending portion 6a, and the bending operation wires 43 are provided on the grip portion 14 side of the operation portion 7. Since the elastic member 49 of the adjusting member 47 disposed near the coil pipe receiver 40 is sandwiched by the elastic member 49, the bending portion 6a
Slowly restores to neutral.

【００３２】その結果、従来の如く急激な復元動作によ
り体腔内壁面の粘膜などに過大な付加が印加されてしま
うことがなくなり患者の負担が軽減される。As a result, an excessive load is not applied to the mucous membrane or the like on the inner wall surface of the body cavity due to the sudden restoration operation as in the related art, and the burden on the patient is reduced.

【００３３】（第二実施例） 図６〜図８は本発明の第二実施例を示し、図６は電子内
視鏡の正面図、図７は図６の右側面図、図８は内視鏡装
置の要部拡大断面図である。(Second Embodiment) FIGS. 6 to 8 show a second embodiment of the present invention, FIG. 6 is a front view of an electronic endoscope, FIG. 7 is a right side view of FIG. 6, and FIG. It is an important section expanded sectional view of an endoscope device.

【００３４】この実施例では、電子内視鏡５１挿入部６
に設けた湾曲部６ａを湾曲動作する駆動手段であるモー
タ２９を外部の湾曲ユニット５２に内蔵し、この湾曲ユ
ニット５２と上記電子内視鏡５１との接続、離間にてク
ラッチ手段５３を構成するものである。In this embodiment, the electronic endoscope 51 insertion section 6
The motor 29, which is a driving means for performing a bending operation of the bending portion 6a, is built in an external bending unit 52, and a clutch means 53 is formed by connecting and separating the bending unit 52 and the electronic endoscope 51. Things.

【００３５】体腔内に上記電子内視鏡５１の挿入部６を
フリーの状態で挿入した後、この挿入部６の湾曲部６ａ
を湾曲させようとする場合、まず、上記電子内視鏡５１
の操作部５４から延出するユニバーサルコード５５の先
端の設けたコネクタ５６から突出する接続部５７ａに設
けた伝達ロッド５８を、上記湾曲ユニット５２のガイド
孔５２ａに挿通する。なお、このコネクタ５６には信号
処理装置４（図５参照）に接続する他の接続部５７ｂが
設けられている。After the insertion section 6 of the electronic endoscope 51 is inserted into the body cavity in a free state, the bending section 6a of the insertion section 6 is inserted.
When trying to bend the electronic endoscope 51,
A transmission rod 58 provided on a connection portion 57a protruding from a connector 56 provided at the end of a universal cord 55 extending from the operation portion 54 is inserted into the guide hole 52a of the bending unit 52. The connector 56 is provided with another connection portion 57b for connecting to the signal processing device 4 (see FIG. 5).

【００３６】すると、この伝達ロッド５８の先端に形成
したラック５８ａが上記湾曲ユニット５２に内蔵するモ
ータ２９のスピンドル２９ａに軸着したピニオン５９に
噛合し、また、上記接続部５７の先端が上記湾曲ユニッ
ト５２の凹部５２ｂに係入し、かつ、この凹部５２ｂの
底面に設けたマグネット６０に吸着されて着脱方向が位
置決め固定されるとともに、上記凹部５２ｂの底面から
突出する位置決めピン５２ｃが上記接続部５７の先端に
穿設したピン受け部５７ｃに係入して回転方向の移動が
規制さされる。Then, a rack 58a formed at the distal end of the transmission rod 58 meshes with a pinion 59 which is pivotally mounted on a spindle 29a of the motor 29 built in the bending unit 52, and the distal end of the connecting portion 57 is bent. The positioning pin 52c is engaged with the concave portion 52b of the unit 52, is attracted by the magnet 60 provided on the bottom surface of the concave portion 52b, and is positioned and fixed in the attaching / detaching direction. The movement in the rotation direction is restricted by being engaged with a pin receiving portion 57c formed at the tip of 57.

【００３７】そして、上記操作部５４に設けた湾曲操作
釦部６１のＵ（上）釦６１ａ，Ｄ（下）釦６１ｂ，Ｌ
（左）釦６１ｃ，Ｒ（右）釦６１ｄを適宜押すと、この
各釦６１ａ〜６１ｄの押圧操作に従って上記モータ２９
が回転し、このモータ２９のスピンドル２９ａに軸着す
るピニオン５９に噛合する上記伝達ロッド５８のラック
５８ａを介して、この伝達ロッド５８が上記接続部５７
ａを進退動作する。この伝達ロッド５８が上記接続部５
７ａにＯリング６２を介して挿通されているため、上記
伝達ロッド５８、上記接続部５７ａ間の水密性は充分に
保証される。The U (up) button 61a, the D (down) button 61b, and the L (up) button of the bending operation button section 61 provided on the operation section 54 are provided.
When the (left) button 61c and the R (right) button 61d are appropriately pressed, the motor 29 is pressed in accordance with the pressing operation of the buttons 61a to 61d.
Is rotated, and the transmission rod 58 is connected to the connecting portion 57 through a rack 58a of the transmission rod 58 that meshes with a pinion 59 that is axially mounted on a spindle 29a of the motor 29.
a moves forward and backward. The transmission rod 58 is connected to the connection portion 5.
7A is inserted through the O-ring 62, the watertightness between the transmission rod 58 and the connecting portion 57a is sufficiently ensured.

【００３８】上記伝達ロッド５８が進退動作すると、こ
の伝達ロッド５８に連設する湾曲操作ワイヤ４３が動方
向へ移動し、前述した第一実施例と同様に上記挿入部６
の湾曲部６ａが湾曲動作する。When the transmission rod 58 moves forward and backward, the bending operation wire 43 connected to the transmission rod 58 moves in the moving direction, and the insertion portion 6 is moved in the same manner as in the first embodiment.
The bending portion 6a performs a bending operation.

【００３９】そして、上記湾曲部６ａが所望湾曲角度に
達したら上記湾曲操作釦部６１のＳＴＯＰ釦６１ｅを押
し、上記モータ２９の回転を停止させて湾曲状態を維持
する。When the bending section 6a reaches the desired bending angle, the STOP button 61e of the bending operation button section 61 is pressed, and the rotation of the motor 29 is stopped to maintain the bending state.

【００４０】その後、内視鏡観察部位の検査、あるい
は、処置を所定に終了した後、上記挿入部６を体腔内か
ら抜き差しする場合、上記接続部５７ａを上記湾曲ユニ
ット５２の凹部５２ａから外し、上記伝達ロッド５８に
形成したラック５８ａと上記ピニオン５９との噛合を解
くと、上記湾曲部６ａの復元動作により、上記湾曲操作
ワイヤ４３が進退動作し、この湾曲操作ワイヤ４３に連
設する上記伝達ロッド５８が同方向へスライドする。Thereafter, when the insertion section 6 is removed from the body cavity after the examination of the endoscope observation site or the treatment is completed in a predetermined manner, the connection section 57a is removed from the concave section 52a of the bending unit 52, When the engagement between the rack 58a formed on the transmission rod 58 and the pinion 59 is released, the bending operation wire 43 moves forward and backward by the restoring operation of the bending portion 6a, and the transmission connected to the bending operation wire 43 is connected. The rod 58 slides in the same direction.

【００４１】その間、この伝達ロッド５８上をＯリング
６２が相対摺動し、このＯリング６２の適度な摩擦力に
て上記湾曲部６ａの復元力が緩慢となりゆっくりとニュ
ートラル位置へ戻される。In the meantime, the O-ring 62 relatively slides on the transmission rod 58, and the restoring force of the curved portion 6a becomes slow due to the appropriate frictional force of the O-ring 62, and the O-ring 62 is slowly returned to the neutral position.

【００４２】したがって、この実施例の場合、Ｏリング
６２が水密手段と調整手段を兼用する。また、上記ラッ
ク５８ａとピニオン５９との噛合、解離にてクラッチ手
段５３を構成し、さらに、スピンドル２９ａ，ピニオン
５９，伝達ロッド５８、湾曲操作ワイヤ４３で牽引手段
４６を構成している。Therefore, in the case of this embodiment, the O-ring 62 serves both as a watertight means and an adjusting means. The clutch means 53 is constituted by the engagement and disengagement of the rack 58a and the pinion 59, and the traction means 46 is constituted by the spindle 29a, the pinion 59, the transmission rod 58, and the bending operation wire 43.

【００４３】なお、上記伝達ロッドの上記Ｏリング６２
を摺動する領域は上記接続部５７ａに覆われているの
で、この領域が進退動作する際に傷付くことはなく、水
密性を長期的に保証することができる。The O-ring 62 of the transmission rod
Is covered with the connecting portion 57a, so that the region is not damaged when the region moves forward and backward, and the watertightness can be guaranteed for a long time.

【００４４】また、上記操作部５４には、レリーズスイ
ッチ６３、送気送水スイッチ６４、吸引スイッチ６５が
従来通り設けられている。The operation unit 54 is provided with a release switch 63, an air / water switch 64, and a suction switch 65 as in the related art.

【００４５】このように、この実施例では、伝達ロッド
５８と接続部５７ａとの間の水密性を保持するＯリング
６２に調整手段を兼用させたため部品点数が低減され、
その分製造組立が容易になる。As described above, in this embodiment, since the O-ring 62 for maintaining the watertightness between the transmission rod 58 and the connecting portion 57a also serves as the adjusting means, the number of parts is reduced,
Manufacturing and assembling becomes easier accordingly.

【００４６】（第三実施例） 図９〜図１１は本発明の第三実施例を示し、図９は電子
内視鏡の正面図、図１０は図９の右側面図、図１１は内
視鏡装置の要部拡大断面図である。(Third Embodiment) FIGS. 9 to 11 show a third embodiment of the present invention. FIG. 9 is a front view of an electronic endoscope, FIG. 10 is a right side view of FIG. 9, and FIG. It is an important section expanded sectional view of an endoscope device.

【００４７】この実施例では、クラッチ手段２７を湾曲
ユニット５２に内蔵したモータ２９のスピンドル２９ａ
に介装したものである。In this embodiment, the spindle 29a of the motor 29 in which the clutch means 27 is built in the bending unit 52
It was interposed in.

【００４８】電子内視鏡５１の操作部５４から延出する
ユニバーサルコード５５を上記湾曲ユニット５２に接続
する場合、まず、上記ユニバーサルコード５５の先端に
設けたコネクタ５６に突設した接続部５７ａを上記湾曲
ユニット５２に穿設した凹部５２ｂに近接させると、上
記接続部５７ａから突出するガイドスリーブ７１の先端
が上記凹部５２ｂの底面に当接し、次いで、このガイド
スリーブ７１が上記接続部５７ａに内装したリターンス
プリング７２の付勢力に抗して相対的に後退する。When connecting the universal cord 55 extending from the operation section 54 of the electronic endoscope 51 to the bending unit 52, first, a connecting section 57a projecting from a connector 56 provided at the end of the universal cord 55 is connected. When approaching the concave portion 52b formed in the bending unit 52, the tip of the guide sleeve 71 protruding from the connection portion 57a comes into contact with the bottom surface of the concave portion 52b, and then the guide sleeve 71 is fitted inside the connection portion 57a. Relative to the biasing force of the return spring 72.

【００４９】すると、このガイドスリーブ７１に遊挿す
る伝達ロッド５８が次第に露呈し、この伝達ロッド５８
の先端に形成したラック５８ａが上記湾曲ユニット５２
の凹部５２ｂに穿設したガイド孔５２ａに挿通されて、
この湾曲ユニット５２に内蔵するモータ２９のスピンド
ル２９ａに軸着したピニオン５９に噛合する。Then, the transmission rod 58 loosely inserted into the guide sleeve 71 is gradually exposed, and the transmission rod 58
The rack 58a formed at the tip of the bending unit 52
Is inserted through the guide hole 52a formed in the concave portion 52b,
It engages with a pinion 59 that is axially attached to a spindle 29 a of a motor 29 built in the bending unit 52.

【００５０】そして、上記接続部５７ａの先端部外周に
装着したＣリング７３が上記湾曲ユニット５２の凹部５
２ｂの内周に環設したリング溝５２ｃに係合されて、上
記接続部５７ａが上記湾曲ユニット５２に固定される。The C ring 73 attached to the outer periphery of the distal end of the connecting portion 57a is
The connecting portion 57a is fixed to the bending unit 52 by being engaged with a ring groove 52c provided around the inner periphery of the second unit 2b.

【００５１】その後、上記操作部５４に設けた湾曲操作
釦部６１を適宜押圧すると、この湾曲操作釦部６１の
Ｕ，Ｄ，Ｌ，Ｒの文字の下に各々配設したタクトスイッ
チ（図示せず）のＯＮ／ＯＦＦに応じて上記モータ２９
が回転し、上記スピンドル２９ａに軸着したピニオン５
９がラック５８ａを介して上記伝達ロッド５８を進退動
作し、この伝達ロッド５８に連設する湾曲操作ワイヤ４
３が同方向へ移動し、前述した第一実施例と同様に挿入
部６の湾曲部６ａが湾曲動作する。Thereafter, when the bending operation button 61 provided on the operation section 54 is appropriately pressed, a tact switch (shown in the figure) provided below the characters U, D, L, and R of the bending operation button 61, respectively.モ ー タ) according to ON / OFF of the motor 29
Rotates, and the pinion 5 is attached to the spindle 29a.
9 moves the transmission rod 58 forward and backward through the rack 58a, and the bending operation wire 4 connected to the transmission rod 58.
3 moves in the same direction, and the bending portion 6a of the insertion portion 6 performs the bending operation as in the first embodiment described above.

【００５２】そして、上記湾曲部６ａが所望湾曲角度に
達したら上記湾曲操作釦部６１の今回押圧した部位のク
タトスイッチを再度押圧すると上記モータ２９の回転が
停止し、上記湾曲部６ａは所定湾曲状態を維持する。When the bending portion 6a reaches the desired bending angle, the rotation of the motor 29 is stopped by pressing again the tact switch of the portion of the bending operation button portion 61 which has been pressed this time, and the bending portion 6a is in a predetermined bending state. To maintain.

【００５３】一方、湾曲動作中に他のクタトスイッチを
押すと、上記湾曲部６ａの湾曲動作が一担停止し、次い
で、新たに押圧されたクタトスイッチの指示方向へ湾曲
動作が開始する。On the other hand, if another Kart switch is pressed during the bending operation, the bending operation of the bending portion 6a is stopped, and then the bending operation starts in the direction of the newly pressed Kut switch.

【００５４】ところで、上記接続部５７ａと上記ガイド
スリーブ７１との間、および、このガイドスリーブ７１
と上記伝達ロッド５８との間にＯリング７４ａ，７４ｂ
が介装されているため、この間の水密性を充分に保証す
ることができる。By the way, between the connecting portion 57a and the guide sleeve 71 and the guide sleeve 71
O-rings 74a, 74b between the
Is provided, so that the watertightness during this period can be sufficiently ensured.

【００５５】そして、体腔内観察部位の検査、あるい
は、処置を所定に終了した後、挿入部６を体腔内から抜
き差しする場合、上記操作部５４に設けたクラッチフリ
ー釦（図示せず）を押すと、上記モータ２９のスピンド
ル２９ａに介装しクラッチ手段２７が離間し、上記モー
タ２９による上記湾曲部６ａの湾曲状態、保持力が解か
れ、この湾曲部６ａが自己の復元力でニュートラル状態
へ復帰しようとする。すると、この湾曲部６ａの復元動
作に伴い上記湾曲操作ワイヤ４３が進退動作し、この湾
曲操作ワイヤ４３に連設する上記伝達ロッド５８が上記
Ｏリング７４ｂを摺接し、このＯリング７４ｂの適度な
摩擦力で上記湾曲部６ａはゆっくりとニュートラル状態
へ復帰される。したがって、前述した第二実施例と同様
に、上記Ｏリング７４ｂが調整手段を兼用する。Then, when the insertion section 6 is removed from the body cavity after the examination of the body cavity observation site or the treatment is completed in a predetermined manner, a clutch free button (not shown) provided on the operation section 54 is pressed. Then, the clutch means 27 interposed on the spindle 29a of the motor 29 is separated, the bending state and the holding force of the bending portion 6a by the motor 29 are released, and the bending portion 6a is brought into the neutral state by its own restoring force. Trying to return. Then, the bending operation wire 43 moves forward and backward with the restoration operation of the bending portion 6a, and the transmission rod 58 connected to the bending operation wire 43 slidably contacts the O-ring 74b. The bending portion 6a is slowly returned to the neutral state by the frictional force. Therefore, similarly to the above-described second embodiment, the O-ring 74b also serves as an adjusting unit.

【００５６】また、この実施例における牽引手段４６は
スピンドル２９ａ，ピニオン５９，伝達ロッド５８、お
よび、湾曲操作ワイヤ４３で構成されている。The traction means 46 in this embodiment comprises a spindle 29a, a pinion 59, a transmission rod 58, and a bending operation wire 43.

【００５７】なお、上記伝達ロッド５８の上記Ｏリング
７４ｂに摺接する領域は上記ロッドカバー７１に常に覆
われているので傷付くことがなく、耐久性が良い。Since the area of the transmission rod 58 which is in sliding contact with the O-ring 74b is always covered by the rod cover 71, it is not damaged and has good durability.

【００５８】このように、この実施例では、モータ２９
のスピンドル２９ａにクラッチ手段２７を介装したの
で、前述した第二実施例のように、接続部５７ａを湾曲
ユニット５２から離脱させる必要がなく作業性が良い。As described above, in this embodiment, the motor 29
Since the clutch means 27 is interposed on the spindle 29a, there is no need to detach the connecting portion 57a from the bending unit 52 as in the above-described second embodiment, and the workability is good.

【００５９】（第四実施例） 図１２，図１３は本発明の第四実施例を示し、図１２は
電子内視鏡の斜視図、第１３図は電子内視鏡に設けた湾
曲駆動の要部断面図である。(Fourth Embodiment) FIGS. 12 and 13 show a fourth embodiment of the present invention. FIG. 12 is a perspective view of an electronic endoscope, and FIG. 13 is a bending drive provided in the electronic endoscope. It is principal part sectional drawing.

【００６０】この実施例では、電子内視鏡８１の操作部
８２に内蔵した上下湾曲用モータ８３と左右湾曲用モー
タ８とのスピンドル８３ａ，８４ａにクラッチ手段２７
をそれぞれ介装したものである。In this embodiment, the clutch means 27 is attached to spindles 83a and 84a of a vertical bending motor 83 and a left and right bending motor 8 built in the operation section 82 of the electronic endoscope 81.
Respectively.

【００６１】この実施例における電子内視鏡８１の概略
を説明すれば、８６は上記操作部８２に連設する挿入部
で、この挿入部８６が根元側の軟性部８６ａ、先端側の
湾曲部８６ｂ、および、硬性の先端部８６ｃとからなっ
ている。この先端部８６ｃには、照明窓８７、観察窓８
８、処置具挿通口８９が設けられている。The outline of the electronic endoscope 81 according to this embodiment will be described. An insertion portion 86 is connected to the operation portion 82. The insertion portion 86 is a flexible portion 86a on the base side and a curved portion on the distal end side. 86b and a hard tip 86c. The distal end portion 86c has an illumination window 87, an observation window 8
8. A treatment instrument insertion port 89 is provided.

【００６２】上記操作部８２に設けた起立用レバー９０
を回すと、図示しない起立用モータが回転し、上記処置
具挿通口８９に設けた起立台ん９１を牽引し、この処置
具挿通口８９に挿通した処置具９２の先端９２ａが起立
する。The upright lever 90 provided on the operation section 82
When the is turned, an upright motor (not shown) rotates, pulling the upright pedestal 91 provided in the treatment instrument insertion port 89, and the distal end 92a of the treatment tool 92 inserted into the treatment instrument insertion port 89 rises.

【００６３】上記操作部８２に設けた上下湾曲用スイッ
チノブ９３と左右湾曲用スイッチノブ９４の周側面に各
々設けた圧電素子などからなる駆動スイッチ９３ａ，９
４ａを選択的に押圧すると、この各スイッチ９３ａ，９
４ａに接続する上記上下湾曲用モータ８３と上記左右湾
曲用モータ８４とが選択的に回転し、この各モータ８
３，８４の回転力が、この各モータ８３，８４のスピン
ドル８３ａ，８４ａに介装したクラッチ手段２７から各
歯車列９５ａ，９５ｂを介して各ワイヤドラム９ｂが回
転し、この各ワイヤドラム９６に巻装した湾曲操作ワイ
ヤ４３が牽引されて、上記湾曲部８６ｂが所望の方向へ
湾曲される。Drive switches 93a, 9 each composed of a piezoelectric element or the like provided on the peripheral side surface of the switch knob 93 for up / down bending and the switch knob 94 for left / right bending provided on the operation section 82.
4a, the switches 93a, 93 are pressed.
4a, the vertical bending motor 83 and the horizontal bending motor 84 are selectively rotated.
3 and 84, the wire drums 9b rotate from the clutch means 27 interposed on the spindles 83a and 84a of the motors 83 and 84 via the gear trains 95a and 95b. The wound bending operation wire 43 is pulled, and the bending portion 86b is bent in a desired direction.

【００６４】また、上記各歯車列９５ａ，９５ｂが回転
すると、一方の歯車列９５ａの回転軸９７と、この回転
軸９７を遊挿する他方の歯車列９５ｂの軸スリーブ９８
にそれぞれ連設する上記湾曲用スイッチノブ９３，９４
が回転し、観察者は上記両ノブ９３，９４の回転角から
上記湾曲部８６ｂの湾曲量を認識することができる。そ
して、上記駆動スイッチ９３ａ，９４ａを再度押圧する
と上記モータ８３，８４の回転が停止し、上記湾曲部８
６ｂは湾曲状態を維持する。When the gear trains 95a and 95b rotate, the rotating shaft 97 of one gear train 95a and the shaft sleeve 98 of the other gear train 95b into which the rotating shaft 97 is loosely inserted.
Switch knobs 93 and 94 for bending, which are respectively connected to
Is rotated, and the observer can recognize the amount of bending of the bending portion 86b from the rotation angles of the knobs 93 and 94. When the drive switches 93a and 94a are pressed again, the rotation of the motors 83 and 84 is stopped, and the bending portions 8 are stopped.
6b maintains a curved state.

【００６５】上記軸スリーブ９８と操作部本体８２ａと
の間、および、この軸スリーブ９８と上記回転軸９７と
の間に水密性を保持するＯリング９９ａ，９９ｂが介装
されており、上記湾曲部８６ｂの湾曲状態をニュートラ
ルへ戻すべく、上記モータ８３，８４のスピンドル８３
ａ，８４ａに介装したクラッチ手段２７の接続状態を上
記操作部８２に設けたクラッチフリー釦（図示せず）に
より解くと、上記湾曲部８６ｂが自己の復元力でニュー
トラルへ復帰しようとする。O-rings 99a and 99b for maintaining watertightness are interposed between the shaft sleeve 98 and the operation portion main body 82a and between the shaft sleeve 98 and the rotary shaft 97, and the curved portions are provided. To return the curved state of the portion 86b to the neutral state, the spindle 83 of the motors 83 and 84 is used.
When the connection state of the clutch means 27 interposed between the a and 84a is released by a clutch free button (not shown) provided on the operation section 82, the bending section 86b attempts to return to neutral with its own restoring force.

【００６６】すると、この湾曲部８６ｂの復帰動作に伴
い上記湾曲操作ワイヤ４３が進退動作し、この湾曲操作
ワイヤ４３を介装するワイヤドラム９６に連設する歯車
列９５ａ，９５ｂを介して上記回転軸９７と上記軸スリ
ーブ９８が上記Ｏリング９９ａ，９９ｂからの摩擦力を
受けて回転する。Then, the bending operation wire 43 advances and retreats with the return operation of the bending portion 86b, and the rotation is performed via the gear trains 95a and 95b connected to the wire drum 96 on which the bending operation wire 43 is interposed. The shaft 97 and the shaft sleeve 98 rotate by receiving the frictional force from the O-rings 99a and 99b.

【００６７】その結果、上記湾曲部８６ｂがＯリング９
９ａ，９９ｂと上記回転軸９７、軸スリーブ９８との間
の適度な摩擦力によってゆっくりとニュートラル状態へ
復帰される。したがって、この実施例においては上記Ｏ
リング９９ａ，９９ｂが調整手段を兼用する。As a result, the bending portion 86b is
The neutral state is slowly returned to the neutral state by an appropriate frictional force between the shafts 9a and 99b and the rotating shaft 97 and the shaft sleeve 98. Therefore, in this embodiment, the above O
The rings 99a, 99b also serve as adjusting means.

【００６８】また、上記上下湾曲用モータ８３に連設す
るスピンドル８３ａ、歯車列９５ａ、軸スリーブ９８、
ワイヤドラム９６、および、湾曲操作ワイヤ４３で上下
湾曲用牽引手段４６ａを構成し、一方、上記左右湾曲用
モータ８４に連設するスピンドル８４ａ、歯車列９５
ｂ、回転軸９７、ワイヤドラム９６、および、湾曲操作
ワイヤ４３で左右湾曲用牽引手段４６ｂを構成してい
る。The spindle 83a, the gear train 95a, the shaft sleeve 98,
The wire drum 96 and the bending operation wire 43 constitute a pulling means 46a for bending up and down. On the other hand, a spindle 84a connected to the motor 84 for bending left and right, a gear train 95
b, the rotating shaft 97, the wire drum 96, and the bending operation wire 43 constitute a left-right bending pulling unit 46 b.

【００６９】（第五実施例） 図１４は本発明の第五実施例による電子内視鏡に設けた
湾曲駆動系の要部断面図である。(Fifth Embodiment) FIG. 14 is a sectional view of a main part of a bending drive system provided in an electronic endoscope according to a fifth embodiment of the present invention.

【００７０】この実施例では調整手段としてフライホイ
ール１０４を採用している。In this embodiment, a flywheel 104 is employed as the adjusting means.

【００７１】図示しない電子内視鏡の操作部に設けた湾
曲操作用モータ２９が回転すると、この湾曲操作用モー
タ２９のスピンドル２９ａに連設する歯車列１０１とこ
の歯車列１０１に回転軸１０３を介して連設する他の歯
車列１０２とを経てワイヤドラム９６が回転し、このワ
イヤドラム９６に巻装する湾曲操作ワイヤ４３が移動
し、この湾曲操作ワイヤ４３に連設する上記電子内視鏡
の挿入部に設けた湾曲部が湾曲動作する。When a bending operation motor 29 provided in an operation section of an electronic endoscope (not shown) rotates, a gear train 101 connected to a spindle 29a of the bending operation motor 29 and a rotating shaft 103 are attached to the gear train 101. The wire drum 96 rotates through another gear train 102 connected to the wire end, and the bending operation wire 43 wound around the wire drum 96 moves, and the electronic endoscope connected to the bending operation wire 43 is moved. The bending portion provided in the insertion portion performs a bending operation.

【００７２】一方、上記湾曲部の湾曲状態をニュートラ
ルへ戻す場合、上記操作部に設けたクラッチフリー釦
（図示せず）を押すと、上記回転軸１０３に介装したク
ラッチ手段２７の接続状態が解かれ、上記湾曲部が自己
の復元力により戻ろうとする。その結果、上記湾曲部に
上記湾曲操作ワイヤ４３、ワイヤドラム９６を介して連
設する歯車列１０２に、上記湾曲部の復元力に伴う回転
力が印加されて急激に回転しようとするが、上記回転軸
１０３に連設する上記フライホイール１０４の慣性力に
て抑えられる。On the other hand, when returning the bending state of the bending portion to neutral, when a clutch free button (not shown) provided on the operation portion is pressed, the connection state of the clutch means 27 interposed on the rotary shaft 103 is changed. It is released and the bent portion tries to return by its own restoring force. As a result, a rotational force associated with the restoring force of the bending portion is applied to the gear train 102 connected to the bending portion via the bending operation wire 43 and the wire drum 96, and the gear train 102 tries to rotate rapidly. It is suppressed by the inertial force of the flywheel 104 connected to the rotating shaft 103.

【００７３】したがって、上記湾曲部は上記フライホイ
ール１０４の慣性力によってゆっくりとニュートラル方
向へ復帰される。Therefore, the curved portion is slowly returned to the neutral direction by the inertial force of the flywheel 104.

【００７４】なお、上記湾曲操作用モータ２９のスピン
ドル２９ａ，歯車列１０１，１０２、回転軸１０３、ワ
イヤドラム９６、湾曲操作ワイヤ４３で牽引手段４６を
構成している。The pulling means 46 is constituted by the spindle 29a of the bending operation motor 29, the gear trains 101 and 102, the rotating shaft 103, the wire drum 96, and the bending operation wire 43.

【００７５】このように、この実施例では調整手段とし
てフライホイール１０４を採用しているので、経時劣化
がなく高い信頼性を得ることができる。As described above, in this embodiment, since the flywheel 104 is employed as the adjusting means, high reliability can be obtained without deterioration over time.

【００７６】（第六実施例） 図１５は本発明の第六実施例による湾曲駆動系の要部断
面図である。(Sixth Embodiment) FIG. 15 is a sectional view of a main part of a bending drive system according to a sixth embodiment of the present invention.

【００７７】この実施例では調整手段としてエアーダン
パ１１１を採用している。In this embodiment, an air damper 111 is employed as an adjusting means.

【００７８】このエアダンパ１１１のシリンダ１１１ａ
が図示しない電子内視鏡の操作部に設けた操作部本体８
２ａに固定されており、このシリンダ１１１ａに嵌挿し
たピストン１１１ｂの両端に図示しない湾曲部に連設す
る牽引手段４６の一部をなす湾曲操作ワイヤ４３ａと、
図示しない湾曲操作用モータにクラッチ手段を介して連
設する牽引手段の一部をなす他の湾曲操作ワイヤ４３ｂ
とが連設されている。湾曲部を一方（例えば、上方）へ
湾曲させるべく上記湾曲操作ワイヤ４３ｂを図の右方向
へ引くと上記ピストン１１１ｂが同方向へ移動し、この
ピストン１１１ｂと上記シリンダ１１１ａの底面との間
に形成されたダンパ室１１１ｃに上記シリンダ１１１ａ
の底面に穿設したリーク孔１１１ｄから空気が流入され
る。The cylinder 111a of the air damper 111
Is an operation section main body 8 provided in an operation section of an electronic endoscope (not shown).
A bending operation wire 43a fixed to the cylinder 2a and forming a part of a traction means 46 connected to a bending portion (not shown) at both ends of a piston 111b fitted into the cylinder 111a;
Another bending operation wire 43b forming a part of the traction means connected to the bending operation motor (not shown) via the clutch means.
Are connected to each other. When the bending operation wire 43b is pulled rightward in the drawing to bend the bending portion to one side (for example, upward), the piston 111b moves in the same direction, and is formed between the piston 111b and the bottom surface of the cylinder 111a. The cylinder 111a is placed in the damper chamber 111c.
Air flows in from a leak hole 111d formed in the bottom surface of the air conditioner.

【００７９】そして、上記湾曲部の湾曲状態をニュート
ラルへ戻すべく上記湾曲操作ワイヤ４３ｂと上記湾曲操
作用モータとの間に介装したクラッチ手段（いずれも図
示せず）の接続状態を解くと、上記エアーダンパ１１１
ｂが上記湾曲部の復元動作により上記湾曲操作４３ａを
介して図の左方向へ引かれる。When the connection state of the clutch means (both not shown) interposed between the bending operation wire 43b and the bending operation motor is released to return the bending state of the bending portion to the neutral state, Air damper 111
b is pulled leftward in the figure via the bending operation 43a by the operation of restoring the bending portion.

【００８０】すると、上記ピストン１１１ｂが上記ダン
パ室１１１ｃの空気を押圧し、この空気が上記リーク孔
１１１ｄから徐々に流出する。Then, the piston 111b presses the air in the damper chamber 111c, and the air gradually flows out from the leak hole 111d.

【００８１】その結果、上記湾曲操作ワイヤ４３ａに連
設する上記湾曲部が上記ピストン１１１ｂの移動速度に
従ってゆっくりとニュートラル状態に復帰される。As a result, the bending portion connected to the bending operation wire 43a is slowly returned to the neutral state according to the moving speed of the piston 111b.

【００８２】また、上記湾曲部を他方（例えば、下方）
へ湾曲させる際に上記湾曲操作ワイヤ４３ｂが図の左方
向へ引かれると、上記エアダンパ１１１のダンパ室１１
１ｃの空気が上記ピストン１１１ｂに押圧されて上記リ
ーク孔１１１ｄから流出する。Further, the curved portion is connected to the other (for example, below)
When the bending operation wire 43b is pulled to the left in the drawing when bending, the damper chamber 11 of the air damper 111 is bent.
The air 1c is pressed by the piston 111b and flows out from the leak hole 111d.

【００８３】次いで、上記湾曲部の湾曲状態をニュート
ラルへ戻すべく上記クラッチ手段の接続を解くと、上記
ピストン１１１ｂが上記湾曲部の復元力により上記湾曲
操作ワイヤ４３ｂを介して図の右方向へ引かれ、上記エ
アダンパ１１１のダンパ室１１１ｃに上記リーク孔１１
１ｄから空気が徐々に流入され、ピストン１１１ｂがゆ
っくりと同方向へ移動する。Next, when the clutch means is disconnected to return the bending state of the bending portion to the neutral state, the piston 111b is pulled rightward in the drawing via the bending operation wire 43b by the restoring force of the bending portion. Then, the leak hole 11 is inserted into the damper chamber 111c of the air damper 111.
Air gradually flows in from 1d, and the piston 111b slowly moves in the same direction.

【００８４】その結果、上記湾曲部がニュートラルへゆ
っくりと復帰される。As a result, the bending portion is slowly returned to neutral.

【００８５】このように、この実施例ではエアダンパ１
１１を調整手段としているためリーク孔１１１ｄからの
空気のリーク量を調整することで湾曲部の復帰速度を任
意に設定することができる。As described above, in this embodiment, the air damper 1
Since the adjusting means 11 is used, the return speed of the bending portion can be set arbitrarily by adjusting the amount of air leaking from the leak hole 111d.

【００８６】なお、この実施例における調整手段はエア
ダンパに限らず、オイルダンパ、あるいは、ばねダンパ
であってもよい。The adjusting means in this embodiment is not limited to the air damper, but may be an oil damper or a spring damper.

【００８７】[0087]

【発明の効果】以上、説明したように本発明によれば、
クラッチ手段と湾曲部との間の牽引手段に、この牽引手
段の動作を緩慢にする調整手段を介装したので、上記湾
曲部の湾曲状態をニュートラル状態に戻すべく牽引手段
の中途を離間しても上記湾曲部が急激に復元動作するこ
とがなく体腔内壁面の粘膜などに過大な負荷を印加させ
るようなことがなくなる。As described above, according to the present invention,
Since the adjusting means for slowing down the operation of the towing means is interposed in the towing means between the clutch means and the bending part, the middle of the towing means is separated to return the bending state of the bending part to the neutral state. In addition, the curved portion does not suddenly perform a restoring operation, so that an excessive load is not applied to the mucous membrane or the like on the inner wall surface of the body cavity.

【図面の簡単な説明】[Brief description of the drawings]

【図１】図１〜図５は本発明の一実施例を示し、図１は
操作部の縦断面図である。1 to 5 show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of an operation unit.

【図２】図１のII−II断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.

【図３】図１のIII 矢視図である。FIG. 3 is a view taken in the direction of arrow III in FIG. 1;

【図４】図１のIV−IV断面図である。FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

【図５】内視鏡装置の概略図である。FIG. 5 is a schematic diagram of an endoscope apparatus.

【図６】図６〜図８は本発明の第二実施例を示し、図６
は電子内視鏡の正面図である。6 to 8 show a second embodiment of the present invention.
1 is a front view of an electronic endoscope.

【図７】図６の右側面図である。FIG. 7 is a right side view of FIG.

【図８】内視鏡装置の要部拡大断面図である。FIG. 8 is an enlarged sectional view of a main part of the endoscope apparatus.

【図９】図９〜図１１は本発明の第三実施例を示し、図
９は電子内視鏡の正面図である。FIGS. 9 to 11 show a third embodiment of the present invention, and FIG. 9 is a front view of an electronic endoscope.

【図１０】図９の右側面図である。FIG. 10 is a right side view of FIG. 9;

【図１１】内視鏡装置の要部拡大断面図である。FIG. 11 is an enlarged sectional view of a main part of the endoscope apparatus.

【図１２】図１２，図１３は本発明の第四実施例を示
し、図１２は電子内視鏡の斜視図である。12 and 13 show a fourth embodiment of the present invention, and FIG. 12 is a perspective view of an electronic endoscope.

【図１３】内視鏡に設けた湾曲駆動の要部断面図であ
る。FIG. 13 is a sectional view of a main part of a bending drive provided in the endoscope.

【図１４】本発明の第五実施例による電子内視鏡に設け
た湾曲駆動系の要部断面である。FIG. 14 is a cross-sectional view of a main part of a bending drive system provided in an electronic endoscope according to a fifth embodiment of the present invention.

【図１５】本発明の第六実施例による湾曲駆動系の要部
断面図である。FIG. 15 is a sectional view of a main part of a bending drive system according to a sixth embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１…内視鏡装置 ７，５４，８２…操作部 ６，８６…挿入部 ６ａ，８６ｂ…湾曲部 ２９，８３，８４…駆動手段 ４６，４６ａ，４６ｂ…牽引手段 ２７，５３…クラッチ手段 ４７，６２，７４ｂ，９９ａ，９９ｂ，１０４，１１１
…調整手段DESCRIPTION OF SYMBOLS 1 ... Endoscope apparatus 7, 54, 82 ... Operation part 6, 86 ... Insertion part 6a, 86b ... Bending part 29, 83, 84 ... Driving means 46, 46a, 46b ... Traction means 27, 53 ... Clutch means 47, 62, 74b, 99a, 99b, 104, 111
… Adjustment means

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】操作部に連設する挿入部の先端側に設けた
湾曲部と、 上記湾曲部の湾曲動作を行う駆動手段と、 この駆動手段の駆動力を伝達し、上記湾曲部を湾曲させ
る牽引手段と、 この牽引手段の中途に設けて駆動力の伝達を解除するク
ラッチ手段と、 上記クラッチ手段と上記湾曲部との間の上記牽引手段に
介装して、この牽引手段の動作を緩慢にする調整手段 とを備えることを特徴とする内視鏡装置。A bending portion provided on a distal end side of an insertion portion connected to an operation portion; a driving means for performing a bending operation of the bending portion; a driving force of the driving means being transmitted to bend the bending portion. A traction means to be provided, a clutch means provided in the middle of the traction means to release the transmission of the driving force, and an operation of the traction means interposed in the traction means between the clutch means and the bending portion. An endoscope apparatus comprising: adjusting means for slowing down.
JP2400950A 1990-12-07 1990-12-07 Endoscope device Expired - Fee Related JP2935475B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2400950A JP2935475B2 (en) 1990-12-07 1990-12-07 Endoscope device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2400950A JP2935475B2 (en) 1990-12-07 1990-12-07 Endoscope device

Publications (2)

Publication Number Publication Date
JPH04210039A JPH04210039A (en) 1992-07-31
JP2935475B2 true JP2935475B2 (en) 1999-08-16

Family

ID=18510808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2400950A Expired - Fee Related JP2935475B2 (en) 1990-12-07 1990-12-07 Endoscope device

Country Status (1)

Country Link
JP (1) JP2935475B2 (en)

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JP5331507B2 (en) * 2009-02-18 2013-10-30 富士フイルム株式会社 Endoscope
EP2957214A3 (en) 2011-02-16 2016-03-30 Olympus Corporation Endoscope and treatment instrument for endoscope
EP2609848B1 (en) * 2011-03-29 2016-02-03 Olympus Corporation Endoscope
JP5889023B2 (en) * 2012-02-07 2016-03-22 オリンパス株式会社 Medical equipment
CN104736040B (en) 2013-02-05 2018-05-29 奥林巴斯株式会社 Insertion apparatus
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Publication number Priority date Publication date Assignee Title
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Also Published As

Publication number Publication date
JPH04210039A (en) 1992-07-31

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