JP2935475B2 - Endoscope device - Google Patents
Endoscope deviceInfo
- 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
Links
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
【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.
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)
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.
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 |
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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 |
CN104470415B (en) * | 2013-02-07 | 2016-09-14 | 奥林巴斯株式会社 | Endoscopic procedure cage structure |
CN113189767A (en) * | 2021-05-18 | 2021-07-30 | 深圳市微视光电科技有限公司 | Damping adjusting device for industrial endoscope operating rod |
-
1990
- 1990-12-07 JP JP2400950A patent/JP2935475B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20190365536A1 (en) * | 2016-11-17 | 2019-12-05 | Evalve, Inc. | Cardiac implant delivery system |
Also Published As
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JPH04210039A (en) | 1992-07-31 |
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