JP4895726B2 - Flexible endoscope insertion part - Google Patents

Flexible endoscope insertion part Download PDF

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JP4895726B2
JP4895726B2 JP2006229982A JP2006229982A JP4895726B2 JP 4895726 B2 JP4895726 B2 JP 4895726B2 JP 2006229982 A JP2006229982 A JP 2006229982A JP 2006229982 A JP2006229982 A JP 2006229982A JP 4895726 B2 JP4895726 B2 JP 4895726B2
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flexible tube
flexible
bending
fixed
endoscope
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JP2008049000A (en
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由久 四條
隆之 荻野
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Hoya Corp
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Hoya Corp
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この発明は可撓性内視鏡の挿入部に関する。   The present invention relates to an insertion portion of a flexible endoscope.

可撓性内視鏡の挿入部は一般に、基端側からの遠隔操作によって屈曲する湾曲部が、可撓管によって外装された可撓管部の先端に連結されていて、湾曲部を屈曲させるために基端側から牽引操作される操作ワイヤの先端が湾曲部の先端側に連結され、操作ワイヤを挿通案内するガイドコイルが可撓管部内に挿通配置されて、湾曲部と可撓管部とを連結する連結硬質部にガイドコイルの先端が固定されている(例えば、特許文献1)。
特開2004−105593
In general, an insertion portion of a flexible endoscope has a bending portion that is bent by a remote operation from the proximal end side and is connected to a distal end of a flexible tube portion that is sheathed by a flexible tube to bend the bending portion. For this purpose, the distal end of the operation wire pulled from the proximal end side is connected to the distal end side of the bending portion, and a guide coil for inserting and guiding the operation wire is inserted and arranged in the flexible tube portion. The tip of the guide coil is fixed to a connecting hard part that connects the two (for example, Patent Document 1).
JP 2004-105593 A

内視鏡を管腔臓器に挿入するためには、遠隔操作によって屈曲する湾曲部の存在が不可欠である。しかし、大腸や気管支等の深部にまで挿入するためには、湾曲部だけでなく、湾曲部の後側に隣接する可撓管部の先端寄りの部分が、湾曲部よりは大きなカーブで湾曲部と同方向に屈曲する必要があることが知られている。そこで引用文献1に記載された発明等においては、湾曲部の後側に隣接する可撓管部の先端寄りの部分を、それより後方の領域より曲がり易く柔軟に形成してある。   In order to insert an endoscope into a luminal organ, it is indispensable to have a curved portion that can be bent by remote operation. However, in order to insert deep into the large intestine, bronchi, etc., not only the bending portion, but also the portion near the distal end of the flexible tube adjacent to the rear side of the bending portion has a larger curve than the bending portion. It is known that it is necessary to bend in the same direction. Therefore, in the invention described in the cited document 1, a portion near the tip of the flexible tube portion adjacent to the rear side of the curved portion is formed flexibly so as to bend more easily than a region behind it.

しかし可撓管部の屈曲方向はフリーなので、図7に示されるように、可撓管部1の先端寄りの部分が湾曲部2と逆方向に反った状態になった場合等には、手元側から幾ら押し込み操作をしても可撓管部1の先端寄りの部分がどんどん曲げられるだけでそれより奥へ挿入させることができなくなるため、短時間で深部へ挿入するのが困難な場合が少なくなかった。   However, since the bending direction of the flexible tube portion is free, as shown in FIG. 7, when the portion near the tip of the flexible tube portion 1 is warped in the opposite direction to the bending portion 2, etc. No matter how much the push-in operation is performed from the side, the portion near the tip of the flexible tube portion 1 is bent more and more and cannot be inserted deeper than that, so it may be difficult to insert deeply in a short time. Not a few.

本発明は、湾曲部の後側に隣接する可撓管部の先端寄りの部分を、湾曲部に追従して湾曲部よりは大きなカーブで湾曲部と同方向に強制的に屈曲させることにより、管腔臓器の深部にまで短時間で容易に挿入することができる可撓性内視鏡の挿入部を提供することを目的とする。   The present invention forcibly bends the portion near the tip of the flexible tube adjacent to the rear side of the bending portion in the same direction as the bending portion with a larger curve than the bending portion following the bending portion, An object of the present invention is to provide an insertion portion of a flexible endoscope that can be easily inserted in a short time into a deep part of a luminal organ.

上記の目的を達成するため、本発明の可撓性内視鏡の挿入部は、基端側からの遠隔操作によって屈曲する湾曲部が、可撓管によって外装された可撓管部の先端に連結されて、湾曲部を屈曲させるために基端側から牽引操作される操作ワイヤの先端が湾曲部の先端部分に連結され、操作ワイヤを挿通案内するガイドコイルが可撓管部内に挿通配置された構成を有する可撓性内視鏡の挿入部において、ガイドコイルの先端近傍部分が、湾曲部と可撓管部とを連結する連結硬質部の近傍であってその連結硬質部より後方において、可撓管の内周部に固定されているものである。   In order to achieve the above object, the insertion portion of the flexible endoscope of the present invention has a bending portion bent by remote operation from the proximal end side at the distal end of the flexible tube portion covered with the flexible tube. The distal end of the operation wire that is connected and pulled from the base end side to bend the bending portion is connected to the distal end portion of the bending portion, and a guide coil for inserting and guiding the operation wire is inserted into the flexible tube portion. In the insertion portion of the flexible endoscope having the above-described configuration, the vicinity of the distal end of the guide coil is in the vicinity of the connecting hard portion that connects the bending portion and the flexible tube portion, and behind the connecting hard portion. It is fixed to the inner periphery of the flexible tube.

なお、ガイドコイルが、連結硬質部の後端部分から後方に、可撓管の直径寸法以上であって湾曲部の長さ寸法以下離れた位置で、可撓管の内周部に固定されているとよい。そして、ガイドコイルの最先端部分が可撓管の内周部に固定されていてもよく、あるいは、ガイドコイルの最先端が連結硬質部に位置していて、ガイドコイルがそれより後方位置で可撓管の内周部に固定されていてもよい。   The guide coil is fixed to the inner peripheral portion of the flexible tube at a position that is not less than the diameter of the flexible tube and not more than the length of the curved portion behind the rear end portion of the connecting rigid portion. It is good to be. The leading end portion of the guide coil may be fixed to the inner peripheral portion of the flexible tube, or the leading end of the guide coil is located at the connecting hard portion, and the guide coil may be located at a rear position. It may be fixed to the inner periphery of the flexible tube.

また、ガイドコイルが、可撓管を構成する部材に直接固定されていてもよく、ガイドコイルが環状部材の内周部に固定されて、その環状部材の外周部が可撓管を構成する部材に固定されていてもよい。   Further, the guide coil may be directly fixed to a member constituting the flexible tube, the guide coil is fixed to the inner peripheral portion of the annular member, and the outer peripheral portion of the annular member constitutes the flexible tube. It may be fixed to.

本発明によれば、ガイドコイルの先端近傍部分が、湾曲部と可撓管部とを連結する連結硬質部の近傍であってその連結硬質部より後方において可撓管の内周部に固定されていることにより、湾曲部の後側に隣接する可撓管部の先端寄りの部分が、湾曲部に追従して湾曲部よりは大きなカーブで湾曲部と同方向に強制的に屈曲するので、可撓管部を後方から押し込み操作すると先端側が管腔臓器の屈曲部を容易に通過し、管腔臓器の深部にまで短時間で容易に挿入することができる。   According to the present invention, the vicinity of the distal end of the guide coil is fixed to the inner peripheral portion of the flexible tube in the vicinity of the connecting rigid portion that connects the bending portion and the flexible tube portion and behind the connecting rigid portion. Because the portion near the tip of the flexible tube part adjacent to the rear side of the bending part is forced to bend in the same direction as the bending part with a larger curve than the bending part following the bending part. When the flexible tube part is pushed in from behind, the distal end side can easily pass through the bent part of the luminal organ and can be easily inserted into the deep part of the luminal organ in a short time.

基端側からの遠隔操作によって屈曲する湾曲部が、可撓管によって外装された可撓管部の先端に連結されて、湾曲部を屈曲させるために基端側から牽引操作される操作ワイヤの先端が湾曲部の先端部分に連結され、操作ワイヤを挿通案内するガイドコイルが可撓管部内に挿通配置された構成を有する可撓性内視鏡の挿入部において、ガイドコイルの先端近傍部分が、湾曲部と可撓管部とを連結する連結硬質部の近傍であってその連結硬質部より後方において、可撓管の内周部に固定されている。   A bending portion that is bent by remote operation from the proximal end side is connected to a distal end of the flexible tube portion that is sheathed by the flexible tube, and an operation wire that is pulled from the proximal end side to bend the bending portion is provided. In the insertion portion of the flexible endoscope, the distal end portion of the guide coil is connected to the distal end portion of the bending portion, and the guide coil for inserting and guiding the operation wire is inserted into the flexible tube portion. In the vicinity of the connecting hard portion that connects the bending portion and the flexible tube portion and behind the connecting hard portion, the bending portion and the flexible tube portion are fixed to the inner peripheral portion of the flexible tube.

以下、図面を参照して本発明の実施例を説明する。
図2は内視鏡の全体構成を示しており、可撓管によって外装された可撓管部1の先端に、遠隔操作によって屈曲する湾曲部2が連結されている。
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 2 shows the overall configuration of the endoscope, and a bending portion 2 that is bent by remote operation is connected to a distal end of the flexible tube portion 1 that is sheathed by a flexible tube.

可撓管部1と湾曲部2との連結部分は、全く可撓性がなくて屈曲しない連結硬質部3である。4は、図示されていない観察窓等が配置された先端部本体であり、可撓管部1、湾曲部2、連結硬質部3及び先端部本体4によって可撓性内視鏡の挿入部が構成されている。   The connecting portion between the flexible tube portion 1 and the bending portion 2 is a connecting hard portion 3 that is not flexible at all and does not bend. Reference numeral 4 denotes a distal end body in which an observation window or the like (not shown) is arranged. The flexible tube insertion portion 1, the bending portion 2, the connecting rigid portion 3 and the distal end portion body 4 serve to insert the flexible endoscope. It is configured.

可撓管部1の基端に連結された操作部5には、湾曲操作ノブ6が配置されていて、湾曲操作ノブ6を回転操作することにより牽引される例えば上下左右各方向用の四本の操作ワイヤ7が、可撓管部1内から湾曲部2にわたって挿通配置され、操作ワイヤ7の先端は湾曲部2の先端部分に連結されている。   A bending operation knob 6 is disposed on the operation unit 5 connected to the base end of the flexible tube unit 1, and is pulled by rotating the bending operation knob 6, for example, four in each of the vertical and horizontal directions. The operation wire 7 is inserted and arranged from the inside of the flexible tube portion 1 to the bending portion 2, and the distal end of the operation wire 7 is connected to the distal end portion of the bending portion 2.

その結果、湾曲操作ノブ6を回転操作すると複数の操作ワイヤ7の中の一本が牽引されてその反対側に位置する操作ワイヤ7は緩み側になり、二点鎖線で示されるように、湾曲部2を任意の方向に任意の角度だけ屈曲させることができる。   As a result, when the bending operation knob 6 is rotated, one of the plurality of operation wires 7 is pulled, and the operation wire 7 positioned on the opposite side is on the loose side, as shown by the two-dot chain line. The part 2 can be bent in any direction by any angle.

図1は、可撓管部1と湾曲部2との連結部付近を示している。この実施例の可撓管部1を外装する可撓管10は、巻き方向が相違する二重の螺旋管11,12の外周面に網状管13が被覆され、さらにその外周面に合成樹脂製の可撓性外皮14が被覆されて構成されている。なお、可撓管10内に挿通配置されている光学繊維束等のいわゆる内蔵物は図示が省略されている。   FIG. 1 shows the vicinity of the connecting portion between the flexible tube portion 1 and the bending portion 2. In the flexible tube 10 that sheathes the flexible tube portion 1 of this embodiment, a mesh tube 13 is coated on the outer peripheral surface of the double spiral tubes 11 and 12 having different winding directions, and the outer peripheral surface is made of a synthetic resin. The flexible outer skin 14 is covered. In addition, what is called built-in things, such as an optical fiber bundle inserted and arrange | positioned in the flexible tube 10, are abbreviate | omitting illustration.

湾曲部2は、短筒状の複数の関節駒21がリベット22で回動自在に連結されて、その外周面に網状管23が被覆され、さらにその外周面にゴムチューブ等からなる弾力性外皮24が被覆されて構成されている。25は、操作ワイヤ7を案内するためのワイヤガイドである。   The bending portion 2 includes a plurality of short cylindrical joint pieces 21 that are rotatably connected by a rivet 22, a mesh tube 23 is covered on the outer peripheral surface, and an elastic outer shell made of a rubber tube or the like on the outer peripheral surface. 24 is covered. Reference numeral 25 denotes a wire guide for guiding the operation wire 7.

連結硬質部3は、可撓管10の先端部に固着された可撓管部先端口金19と湾曲部2の後端部に固着された湾曲部後端口金29とで構成されており、可撓管部先端口金19と湾曲部後端口金29とが嵌合接続されて、その接続状態が固定ビス30で固定されている。   The connecting rigid portion 3 is composed of a flexible tube portion front end cap 19 fixed to the distal end portion of the flexible tube 10 and a bending portion rear end cap 29 fixed to the rear end portion of the bending portion 2. The flexible tube portion front end cap 19 and the bent portion rear end cap 29 are fitted and connected, and the connection state is fixed by a fixing screw 30.

8は、操作ワイヤ7を軸線方向に進退自在に挿通案内する金属製の密着巻きのガイドコイルであり、その基端は操作部5内に固定されている。ガイドコイル8の最先端部分は、連結硬質部3の近傍であって連結硬質部3より後方において、可撓管10の内周面(即ち、内側の螺旋管11の内周面)にロー付け又は半田付け等で直接固定されている。   Reference numeral 8 denotes a metal tightly wound guide coil for inserting and guiding the operation wire 7 so as to be movable back and forth in the axial direction, and its proximal end is fixed in the operation portion 5. The leading end portion of the guide coil 8 is brazed to the inner peripheral surface of the flexible tube 10 (that is, the inner peripheral surface of the inner spiral tube 11) in the vicinity of the connecting rigid portion 3 and behind the connecting rigid portion 3. Or it is directly fixed by soldering or the like.

9が、その固定部であり、連結硬質部3の後端と固定部9の先端との間の間隔Lは、可撓管10の直径(外径)寸法以上であって湾曲部2の長さ寸法以下に設定されている。Lが可撓管10の直径(外径)寸法以上ないとその部分が屈曲する効果が小さく、湾曲部2の長さ寸法を越えるようだと、その部分が湾曲部2に対し屈曲し過ぎることになり、かえって挿入性が低下するからである。   Reference numeral 9 denotes the fixed portion, and the interval L between the rear end of the connecting rigid portion 3 and the front end of the fixed portion 9 is equal to or larger than the diameter (outer diameter) of the flexible tube 10 and is the length of the curved portion 2. It is set below the size. If L is not equal to or larger than the diameter (outer diameter) of the flexible tube 10, the effect of bending the portion is small, and if it seems to exceed the length of the bending portion 2, the portion bends excessively with respect to the bending portion 2. This is because the insertability deteriorates.

このように構成された可撓性内視鏡の挿入部は、四本の操作ワイヤ7の中の一本が操作部側から牽引操作されると、その操作ワイヤ7が配置されている方向に湾曲部2が屈曲するが、それだけではなく、可撓管部1の最先端付近の部分(ガイドコイル8の固定部9より先寄りの長さLの部分)が湾曲部2に追従して同方向に強制的に屈曲する。   When one of the four operation wires 7 is pulled from the operation unit side, the insertion portion of the flexible endoscope configured as described above is arranged in the direction in which the operation wire 7 is arranged. Although the bending portion 2 bends, not only that, but the portion in the vicinity of the distal end of the flexible tube portion 1 (the portion of the length L that is closer to the fixing portion 9 of the guide coil 8) follows the bending portion 2 and is the same. Forcibly bend in the direction.

ただし、可撓管部1の可撓性外皮14は湾曲部2の弾力性外皮24のような弾力性に乏しくて、屈曲に対する抵抗が大きいこと等から、可撓管部1は湾曲部2よりは大きなカーブで曲がる。   However, since the flexible outer skin 14 of the flexible tube portion 1 is poor in elasticity like the elastic outer skin 24 of the bending portion 2 and has a higher resistance to bending, the flexible tube portion 1 is more flexible than the bending portion 2. Turns with a big curve.

その結果、図3に示されるように、大腸や気管支等のような管腔臓器の深部にまで挿入される際に、湾曲部2を管腔臓器の曲がっている方向に屈曲させると、その後側に隣接する可撓管部1の先端部分が湾曲部2と同方向に湾曲部2よりは大きなカーブで小さな角度だけ同方向に曲がった状態になる。したがって、その状態で可撓管部1を後方から押し込み操作することにより、先端側が管腔の屈曲部より奥方向に押し進められてスムーズに挿入されていく。   As a result, as shown in FIG. 3, when the bending portion 2 is bent in the bending direction of the luminal organ when inserted into the deep portion of the luminal organ such as the large intestine and bronchus, The distal end portion of the flexible tube portion 1 adjacent to the curved portion 2 is bent in the same direction as the curved portion 2 by a small angle with a larger curve than the curved portion 2. Therefore, by pushing the flexible tube portion 1 from the rear in that state, the distal end side is pushed deeper than the bent portion of the lumen and smoothly inserted.

図4は本発明の第2の実施例の可撓管部1と湾曲部2との連結部付近を示しており、可撓管10の骨組みを構成する部材として螺旋管11,12に代えて湾曲部2と同様の関節駒15が用いられたものであり、リベットに代わる連結ピンが関節駒15と一体成形により形成されている。それ以外の構成は第1の実施例と同様であり、本発明はこのような構成の可撓管10を有する内視鏡の挿入部に適用しても第1の実施例と同様の作用効果を得ることができる。なお、第2の実施例以下の実施例の図面は、前出の構成と相違する部分のみにハッチングを施してある。   FIG. 4 shows the vicinity of the connecting portion between the flexible tube portion 1 and the bending portion 2 of the second embodiment of the present invention, and instead of the helical tubes 11 and 12 as members constituting the framework of the flexible tube 10. A joint piece 15 similar to that of the bending portion 2 is used, and a connecting pin instead of a rivet is formed integrally with the joint piece 15. The rest of the configuration is the same as that of the first embodiment, and the present invention is the same as the first embodiment even when applied to the insertion portion of the endoscope having the flexible tube 10 having such a configuration. Can be obtained. In the drawings of the second embodiment and subsequent embodiments, only portions different from the above-described configuration are hatched.

図5は本発明の第3の実施例の可撓管部1と湾曲部2との連結部付近を示しており、ガイドコイル8を固定するための例えばステンレス鋼管材等からなる環状部材16が設けられて、ガイドコイル8が環状部材16の内周部にロー付け又は半田付け等で固着され、その環状部材16の外周部が螺旋管11の内周面にロー付け又は半田付け等で固定されている。その他の構成は第1の実施例と同様であり、このように構成すると、ガイドコイル8の先端固定作業が容易になる。   FIG. 5 shows the vicinity of the connecting portion between the flexible tube portion 1 and the bending portion 2 according to the third embodiment of the present invention. An annular member 16 made of, for example, a stainless steel tube material for fixing the guide coil 8 is provided. The guide coil 8 is fixed to the inner peripheral portion of the annular member 16 by brazing or soldering, and the outer peripheral portion of the annular member 16 is fixed to the inner peripheral surface of the spiral tube 11 by brazing or soldering. Has been. The other configuration is the same as that of the first embodiment. With this configuration, the tip fixing work of the guide coil 8 is facilitated.

図6は本発明の第4の実施例の可撓管部1と湾曲部2との連結部付近を示しており、連結硬質部3より後方で可撓管部1の内周面に固定されている各ガイドコイル8の先端がその固定部9より前方に伸ばされて、ガイドコイル8の最先端が連結硬質部3内に位置している。その他の構成は第3の実施例と同様であり、このように構成することにより、緩み側の操作ワイヤ7の配列が乱れ難くなる。   FIG. 6 shows the vicinity of the connecting portion between the flexible tube portion 1 and the bending portion 2 of the fourth embodiment of the present invention, and is fixed to the inner peripheral surface of the flexible tube portion 1 behind the connecting hard portion 3. The leading end of each guide coil 8 is extended forward from the fixed portion 9, and the most distal end of the guide coil 8 is located in the connecting rigid portion 3. The other configuration is the same as that of the third embodiment. With this configuration, the arrangement of the loose operation wires 7 is hardly disturbed.

本発明の第1の実施例の可撓管部と湾曲部との連結部付近の側面断面図である。It is side surface sectional drawing of the connection part vicinity of the flexible tube part and bending part of 1st Example of this invention. 本発明の第1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 illustrating an overall configuration of an endoscope according to a first embodiment of the present invention. 本発明の第1の実施例の内視鏡の管腔臓器への挿入状態を示す略示図である。It is a schematic diagram showing the insertion state of the endoscope of the first embodiment of the present invention into the luminal organ. 本発明の第2の実施例の可撓管部と湾曲部との連結部付近の側面断面図である。It is side surface sectional drawing of the connection part vicinity of the flexible tube part and bending part of 2nd Example of this invention. 本発明の第3の実施例の可撓管部と湾曲部との連結部付近の側面断面図である。It is side surface sectional drawing of the connection part vicinity of the flexible tube part and bending part of 3rd Example of this invention. 本発明の第4の実施例の可撓管部と湾曲部との連結部付近の側面断面図である。It is side surface sectional drawing of the connection part vicinity of the flexible tube part and curved part of 4th Example of this invention. 従来の内視鏡の管腔臓器への挿入状態を示す略示図である。It is a schematic diagram which shows the insertion state to the luminal organ of the conventional endoscope.

符号の説明Explanation of symbols

1 可撓管部
2 湾曲部
3 連結硬質部
7 操作ワイヤ
8 ガイドコイル
9 固定部
10 可撓管
11,12 螺旋管
15 関節駒
16 環状部材
DESCRIPTION OF SYMBOLS 1 Flexible pipe part 2 Bending part 3 Connection hard part 7 Operation wire 8 Guide coil 9 Fixing part 10 Flexible pipe 11, 12 Spiral pipe 15 Joint piece 16 Annular member

Claims (5)

基端側からの遠隔操作によって屈曲する湾曲部が、可撓管によって外装された可撓管部の先端に連結されて、上記湾曲部を屈曲させるために基端側から牽引操作される操作ワイヤの先端が上記湾曲部の先端部分に連結され、上記操作ワイヤを挿通案内するガイドコイルが上記可撓管部内に挿通配置された構成を有する可撓性内視鏡の挿入部において、
上記ガイドコイルの先端近傍部分が、上記湾曲部と上記可撓管部とを連結する連結硬質部の後端部分から後方に、上記可撓管の直径寸法以上であって上記湾曲部の長さ寸法以下離れた位置で、上記可撓管の内周部に固定されていることを特徴とする可撓性内視鏡の挿入部。
An operation wire that is bent by a remote operation from the proximal end side is connected to the distal end of the flexible tube portion covered by the flexible tube, and is pulled from the proximal end side to bend the bending portion. In the insertion portion of the flexible endoscope, the distal end of the flexible endoscope is connected to the distal end portion of the bending portion, and a guide coil for inserting and guiding the operation wire is inserted and arranged in the flexible tube portion.
The portion near the tip of the guide coil is not less than the diameter of the flexible tube, and the length of the curved portion is rearward from the rear end portion of the connecting rigid portion that connects the curved portion and the flexible tube portion. An insertion portion of a flexible endoscope, wherein the insertion portion is fixed to an inner peripheral portion of the flexible tube at a position separated by a dimension or less .
上記ガイドコイルの最先端部分が上記可撓管の内周部に固定されている請求項1記載の可撓性内視鏡の挿入部。 Insertion of the flexible endoscope of claim 1 Symbol placement advanced portion of the guide coils are fixed to the inner peripheral portion of the flexible tube. 上記ガイドコイルの最先端が上記連結硬質部に位置していて、上記ガイドコイルがそれより後方位置で上記可撓管の内周部に固定されている請求項1記載の可撓性内視鏡の挿入部。 It has advanced the guide coils are positioned in the connecting rigid section, a flexible endoscopic of claim 1 Symbol mounting is fixed to the inner peripheral portion of the flexible tube in rearward position than the above guide coil Mirror insert. 上記ガイドコイルが、上記可撓管を構成する部材に直接固定されている請求項1ないしのいずれかの項に記載の可撓性内視鏡の挿入部。 The insertion part of the flexible endoscope according to any one of claims 1 to 3 , wherein the guide coil is directly fixed to a member constituting the flexible tube. 上記ガイドコイルが環状部材の内周部に固定されて、その環状部材の外周部が上記可撓管を構成する部材に固定されている請求項1ないしのいずれかの項に記載の可撓性内視鏡の挿入部。
The flexible guide according to any one of claims 1 to 3 , wherein the guide coil is fixed to an inner peripheral portion of the annular member, and an outer peripheral portion of the annular member is fixed to a member constituting the flexible tube. The insertion part of the sex endoscope.
JP2006229982A 2006-08-28 2006-08-28 Flexible endoscope insertion part Expired - Fee Related JP4895726B2 (en)

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