JP4406266B2 - Endoscope - Google Patents

Endoscope Download PDF

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JP4406266B2
JP4406266B2 JP2003383395A JP2003383395A JP4406266B2 JP 4406266 B2 JP4406266 B2 JP 4406266B2 JP 2003383395 A JP2003383395 A JP 2003383395A JP 2003383395 A JP2003383395 A JP 2003383395A JP 4406266 B2 JP4406266 B2 JP 4406266B2
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distal end
tip
endoscope
main body
observation window
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JP2005143688A (en
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章 杉山
裕久 植田
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Hoya Corp
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この発明は内視鏡に関する。   The present invention relates to an endoscope.

一般に内視鏡には、手元側からの遠隔操作によって屈曲させることができる湾曲部が挿入部の先端部分に設けられていて、管状臓器内への挿入と誘導の際等には、観察窓が配置されている挿入部先端の向きを湾曲部操作により制御しながら奥へ奥へと挿入して行く。   In general, an endoscope is provided with a bending portion that can be bent by remote operation from the hand side at the distal end portion of the insertion portion, and an observation window is provided for insertion and guidance into a tubular organ. It is inserted into the back while controlling the direction of the tip of the inserted insertion portion by operating the bending portion.

しかし、例えば大腸内等のように複雑に曲がりくねっているような臓器の深部に内視鏡の先端が達すると、手元側から押し込み操作を行っても挿入部の先端にそれが伝わらなくなって、それ以上押し進めることができなくなるだけでなく、被写体との距離の調整も思うに任せなくなる場合がある。   However, if the tip of the endoscope reaches a deep part of an organ that winds in a complicated manner, such as in the large intestine, it will not be transmitted to the tip of the insertion part even if it is pushed in from the hand side. In addition to being unable to push forward further, there are cases where it is not possible to leave the adjustment of the distance to the subject to the mind.

そこで従来は、被写体粘膜面に押し付けられる先端フードを手元側からの遠隔操作により突没自在に配置して、被写体との距離を調整できるようにしたもの等があった（例えば、特許文献１）。
特開２０００−７９０８６ Therefore, conventionally, there has been a device in which the tip hood pressed against the subject mucous membrane surface is arranged so as to be able to project and retract by remote control from the hand side so that the distance from the subject can be adjusted (for example, Patent Document 1). .
JP 2000-79086 A

しかし、先端フードを被写体である粘膜面に押し付けると、その体壁の動きが内視鏡の挿入部先端に直接伝わってしまうので、被写体との間の距離の微調整がかえって難しくなって、観察や処置を容易に行うことができない場合が少なくない。   However, if the tip hood is pressed against the mucosal surface, which is the subject, the movement of the body wall is directly transmitted to the tip of the insertion part of the endoscope, making it difficult to fine-tune the distance to the subject. In many cases, it is not possible to easily perform treatment.

そこで本発明は、管腔臓器の深部内等においても、被写体との距離を任意に調整して観察や処置を容易に行うことができる内視鏡を提供することを目的とする。   Therefore, an object of the present invention is to provide an endoscope that can be easily observed and treated by arbitrarily adjusting the distance to a subject even in a deep part of a hollow organ.

上記の目的を達成するため、本発明の内視鏡は、観察窓が配置された先端部本体を挿入部の先端部分に前後方向に可動に連結すると共に、先端部本体を挿入部の先端において前後方向に進退させる操作を行うための操作部材を、挿入部の基端側に連結された操作部に配置したものである。   In order to achieve the above object, an endoscope according to the present invention connects a distal end portion body, on which an observation window is disposed, to a distal end portion of an insertion portion so as to be movable in the front-rear direction, and the distal end portion body at the distal end of the insertion portion. An operation member for performing an operation of moving back and forth in the front-rear direction is arranged in an operation unit connected to the proximal end side of the insertion unit.

なお、先端部本体を挿入部の先端部分において前方に付勢する付勢手段が設けられていて、操作部材によって先端部本体を前方に押し出す操作が行われると、先端部本体が付勢手段の付勢力によって前方に移動するようにしてもよい。   A biasing means for biasing the distal end main body forward at the distal end portion of the insertion portion is provided, and when the operation member pushes the distal end main body forward, the distal end main body is You may make it move ahead by urging | biasing force.

本発明によれば、操作部側からの遠隔操作によって先端部本体を挿入部の先端において前後方向に進退させることができるようにしたことにより、体壁の動きが先端部本体に直接伝わらない状態で先端部本体を思いどおりの位置に静止させることができるので、大腸等のような管腔臓器の深部内等において挿入部の進退操作が思うに任せなくなった場合等であっても、先端部本体を進退させて被写体との距離を任意に調整し、観察や処置を容易に行うことができる。   According to the present invention, the distal end main body can be moved back and forth in the front-rear direction at the distal end of the insertion portion by remote control from the operation portion side, so that the movement of the body wall is not directly transmitted to the distal end portion main body. The distal end body can be stopped at the desired position in the Observation and treatment can be easily performed by moving the main body forward and backward to arbitrarily adjust the distance from the subject.

観察窓が配置された先端部本体を挿入部の先端部分に前後方向に可動に連結すると共に、先端部本体を挿入部の先端において前後方向に進退させる操作を行うための操作部材を、挿入部の基端側に連結された操作部に配置した。   An operation member for movably connecting the distal end main body in which the observation window is arranged to the distal end portion of the insertion portion in the front-rear direction and performing an operation for moving the distal end main body forward and backward in the front end of the insertion portion is provided in the insertion portion. It was arrange | positioned in the operation part connected with the base end side.

図面を参照して本発明の実施例を説明する。
図５は内視鏡の全体構成を示しており、可撓性の挿入部１の基端には操作部２が連結されていて、挿入部１の先端付近に形成された湾曲部３を遠隔的に屈曲操作する湾曲操作ノブ４等が操作部２に配置されている。 Embodiments of the present invention will be described with reference to the drawings.
FIG. 5 shows the entire configuration of the endoscope. An operation unit 2 is connected to the proximal end of the flexible insertion unit 1, and the bending unit 3 formed near the distal end of the insertion unit 1 is remotely connected. A bending operation knob 4 or the like that performs bending operation is disposed on the operation unit 2.

湾曲部３の先端（即ち、挿入部１の最先端）位置には観察窓等が配置された先端部本体５が連結されており、挿入部１内に挿通配置された処置具挿通チャンネル６の出口が先端部本体５の先端面に開口し、その入口６ａは挿入部１と操作部２との連結部付近に突出配置されている。   A distal end main body 5 in which an observation window or the like is arranged is connected to the distal end of the bending portion 3 (that is, the most distal end of the insertion portion 1), and the treatment instrument insertion channel 6 inserted in the insertion portion 1 is connected. The outlet opens to the distal end surface of the distal end main body 5, and the inlet 6 a protrudes from the vicinity of the connecting portion between the insertion portion 1 and the operation portion 2.

また、先端部本体５を軸線方向に進退操作するための操作部材である操作レバー８が操作部２に配置されていて、挿入部１内から操作部２内に引き通されている操作ワイヤ７を進退させることにより、湾曲部３に対して先端部本体５を前後方向に進退させることができる。   In addition, an operation lever 8 that is an operation member for moving the distal end portion body 5 forward and backward in the axial direction is disposed in the operation portion 2, and an operation wire 7 that is drawn from the insertion portion 1 into the operation portion 2. By advancing and retreating, the tip end body 5 can be advanced and retracted in the front-rear direction with respect to the bending portion 3.

図１は、先端部本体５の周辺を示しており、処置具挿通チャンネル６の出口開口等と並んで先端部本体５の先端面に配置された観察窓１１の奥に対物光学系１２が配置され、その対物光学系１２による被写体の投影位置に固体撮像素子１３の撮像面が配置されている。   FIG. 1 shows the periphery of the distal end portion body 5, and an objective optical system 12 is disposed in the back of an observation window 11 disposed on the distal end surface of the distal end portion body 5 along with the outlet opening of the treatment instrument insertion channel 6. The imaging surface of the solid-state imaging device 13 is arranged at the projection position of the subject by the objective optical system 12.

湾曲部３を構成する最先端の節輪３ａには、湾曲操作ノブ４によって進退操作される湾曲操作ワイヤ９の先端が後方から連結され、前方からは、先端部本体５の後端寄りの部分が緩く嵌挿されている。したがって、先端部本体５は最先端の節輪３ａに対して進退自在である。   The distal end of the bending operation wire 9 that is advanced and retracted by the bending operation knob 4 is connected from the rear to the most advanced node ring 3a constituting the bending portion 3, and from the front, a portion near the rear end of the distal end portion body 5 Is loosely inserted. Therefore, the tip end body 5 can be moved forward and backward with respect to the most advanced node ring 3a.

ただし、先端部本体５の外壁面に側方に向けて突設されたピン１４が、節輪３ａに軸線と平行方向に形成された直線溝１５内に係合している。したがって先端部本体５は、ピン１４が直線溝１５内で移動可能な範囲において軸線方向に進退自在であり、軸線周り方向への回転は阻止されている。   However, a pin 14 projecting laterally on the outer wall surface of the tip body 5 is engaged in a straight groove 15 formed in the node ring 3a in a direction parallel to the axis. Therefore, the distal end body 5 can advance and retreat in the axial direction within a range in which the pin 14 can move in the linear groove 15, and is prevented from rotating in the direction around the axis.

また、先端部本体５の後端位置に操作ワイヤ７の先端が固着され、先端部本体５の外周の中間部分には圧縮コイルバネ１６が装着されていて、節輪３ａに対して先端部本体５を前方に向かって付勢している。そして、その部分の外面は、湾曲部３を被覆する弾力性のある外被チューブ１０によって連続的に被覆されている。   Further, the distal end of the operation wire 7 is fixed to the rear end position of the distal end portion main body 5, and a compression coil spring 16 is attached to an intermediate portion of the outer periphery of the distal end portion main body 5, and the distal end portion main body 5 is attached to the node ring 3a. Is energized toward the front. And the outer surface of the part is continuously coat | covered with the elastic envelope tube 10 which coat | covers the curved part 3. As shown in FIG.

したがって、操作ワイヤ７が操作部２側から牽引された状態では、図１に示されるように、ピン１４が直線溝１５の後端に位置する状態まで圧縮コイルバネ１６が圧縮されて、先端部本体５が後方に引き寄せられた状態になっている。   Therefore, in the state where the operation wire 7 is pulled from the operation unit 2 side, the compression coil spring 16 is compressed until the pin 14 is located at the rear end of the linear groove 15 as shown in FIG. 5 is pulled back.

そして、操作ワイヤ７が操作部２側から押し出されると、圧縮コイルバネ１６の付勢力によって、図１に二点鎖線で示され、また図２に実線で示されるように、ピン１４が直線溝１５の前端にぶつかる位置まで先端部本体５が前方に押し出される。図３は、その状態を外被チューブ１０を取り除いて示している。   When the operation wire 7 is pushed out from the operation unit 2 side, the pin 14 is moved into the straight groove 15 by the urging force of the compression coil spring 16 as shown by a two-dot chain line in FIG. 1 and by a solid line in FIG. The tip end body 5 is pushed forward to the position where it hits the front end of the head. FIG. 3 shows the state with the outer tube 10 removed.

図４は、操作ワイヤ７を進退操作するために操作部２に配置された操作レバー８の周辺を示しており、操作レバー８と一体的に回転自在に操作部２に配置されたプーリ８０に、操作ワイヤ７の基端が巻回されており、操作レバー８を回転操作することにより操作ワイヤ７が進退する。ただし、プーリ８０に代えてラックピニオンその他の機構を用いても差し支えない。また、操作レバー８を任意の位置で静止させることができるようにする摩擦機構やロック機構などを付設してもよい。   FIG. 4 shows the periphery of the operation lever 8 disposed in the operation unit 2 for moving the operation wire 7 back and forth. The pulley 80 disposed in the operation unit 2 is rotatable integrally with the operation lever 8. The proximal end of the operation wire 7 is wound, and the operation wire 7 moves forward and backward by rotating the operation lever 8. However, a rack and pinion or other mechanism may be used in place of the pulley 80. Further, a friction mechanism, a lock mechanism, or the like that allows the operation lever 8 to be stationary at an arbitrary position may be provided.

このように構成された実施例の内視鏡は、操作部２において操作レバー８を操作することによって、先端部本体５が挿入部１の先端において前後方向に進退する。そして、操作レバー８を中間位置で止めれば先端部本体５もその移動範囲の中間位置で止まり、体壁の動きが先端部本体５に直接伝わらないので、先端部本体５を思いどおりの位置に静止させることができる。   In the endoscope configured as described above, the distal end body 5 moves forward and backward in the distal end of the insertion portion 1 by operating the operation lever 8 in the operation portion 2. If the operation lever 8 is stopped at the intermediate position, the distal end body 5 also stops at the intermediate position of the movement range, and the movement of the body wall is not directly transmitted to the distal end body 5. Can be stationary.

したがって、大腸等のような管腔臓器の深部内等において挿入部１の進退操作が思うに任せなくなった場合等であっても、挿入部１の先端で先端部本体５だけを進退させて被写体との距離を任意に調整し、観察や処置を容易に行うことができる。   Therefore, even when the advancement / retraction operation of the insertion portion 1 is not allowed to be performed in a deep part of a hollow organ such as the large intestine, only the distal end body 5 is advanced / retreated at the distal end of the insertion portion 1. It is possible to easily perform observation and treatment by arbitrarily adjusting the distance to.

本発明の実施例の内視鏡の先端部本体が後端位置にある状態の側面断面図である。It is side surface sectional drawing of the state which has the front-end | tip part main body of the endoscope of the Example of this invention in a rear-end position. 本発明の実施例の内視鏡の先端部本体が前端位置にある状態の側面断面図である。It is side surface sectional drawing of the state which has the front-end | tip part main body of the endoscope of the Example of this invention in a front-end position. 本発明の実施例の内視鏡の先端部本体が前端位置にある状態において外被チューブを取り除いた状態の側面図である。It is a side view of the state which removed the jacket tube in the state where the tip part main part of the endoscope of the example of the present invention exists in the front end position. 本発明の実施例の内視鏡の操作部内の機構の部分側面図である。It is a partial side view of the mechanism in the operation part of the endoscope of the Example of this invention. 本発明の実施例の内視鏡の全体構成を示す側面図である。1 is a side view showing an overall configuration of an endoscope according to an embodiment of the present invention.

符号の説明Explanation of symbols

１ 挿入部
２ 操作部
３ 湾曲部
３ａ 節輪
５ 先端部本体
７ 操作ワイヤ
８ 操作レバー（操作部材）
１１ 観察窓
１４ ピン
１５ 直線溝
１６ 圧縮コイルバネ DESCRIPTION OF SYMBOLS 1 Insertion part 2 Operation part 3 Bending part 3a Node ring 5 Tip part main body 7 Operation wire 8 Operation lever (operation member)
11 Observation window 14 Pin 15 Straight groove 16 Compression coil spring

Claims (2)

挿入部の先端付近に遠隔操作により屈曲する湾曲部が設けられて、観察窓が先端面に配置された先端部本体が上記湾曲部の最先端部分に前後方向に可動に連結され、
上記先端部本体はその最先端部分付近の外径が上記湾曲部の外径と略同じサイズに形成されて、上記先端部本体のそれより後方部分は上記湾曲部を外装する弾力性のある材料からなる外被チューブの先端部分で外装され、
上記先端部本体を上記挿入部の先端において前後方向に進退させる操作を行うための操作部材が、上記挿入部の基端側に連結された操作部に配置されると共に、
上記先端部本体全体を前方に付勢する圧縮コイルバネが上記外被チューブの内周部に沿って配置されて、上記先端部本体と上記操作部材との間を連結する操作ワイヤを上記操作部材で先端側に移動させる操作がなされると、上記先端部本体が上記圧縮コイルバネの付勢力によって前方に移動することを特徴とする内視鏡。 And the curved portion is provided with a bent by remote control in the vicinity of the tip of the insertion portion, an observation window is tip body disposed on the distal end surface is connected to the movable in the longitudinal direction at the outermost tip of the curved portion,
The tip body has an outer diameter in the vicinity of the most distal portion thereof that is substantially the same size as the outer diameter of the curved portion, and the rear portion of the tip portion body has a resilient material that covers the curved portion. It is sheathed at the tip of the jacket tube consisting of
The distal end portion main body with the operating member for performing an operation for forward and backward in the longitudinal direction in the distal end of the insertion portion is disposed on the operation part connected to the base end side of the insertion portion,
A compression coil spring that urges the entire distal end portion body forward is disposed along the inner peripheral portion of the outer tube, and an operation wire that connects the distal end portion body and the operation member with the operation member. An endoscope , wherein when the operation of moving to the distal end side is performed, the distal end portion main body moves forward by an urging force of the compression coil spring . 上記挿入部内に処置具挿通チャンネルが挿通配置されて、上記処置具挿通チャンネルの出口開口が上記観察窓と並んで上記先端部本体の先端面に配置され、上記先端部本体が前方に移動すると、上記処置具挿通チャンネルの出口開口が上記観察窓と共に前方に移動する請求項１記載の内視鏡。 When the treatment instrument insertion channel is inserted and arranged in the insertion portion, the outlet opening of the treatment instrument insertion channel is arranged on the distal end surface of the distal end body along with the observation window, and when the distal end body moves forward, The endoscope according to claim 1, wherein an outlet opening of the treatment instrument insertion channel moves forward together with the observation window .
JP2003383395A 2003-11-13 2003-11-13 Endoscope Expired - Fee Related JP4406266B2 (en)

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JP4406266B2 true JP4406266B2 (en) 2010-01-27

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