JPH05337076A - Insertion guide tube for endoscope - Google Patents
Insertion guide tube for endoscopeInfo
- Publication number
- JPH05337076A JPH05337076A JP4153549A JP15354992A JPH05337076A JP H05337076 A JPH05337076 A JP H05337076A JP 4153549 A JP4153549 A JP 4153549A JP 15354992 A JP15354992 A JP 15354992A JP H05337076 A JPH05337076 A JP H05337076A
- Authority
- JP
- Japan
- Prior art keywords
- endoscope
- sheath
- tube
- insertion portion
- gallbladder
- 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.)
- Granted
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内視鏡の挿入部を体腔
内に挿入するとき、その挿入を補助するために用いられ
る内視鏡用挿入案内管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope insertion guide tube used to assist the insertion of an endoscope insertion portion into a body cavity.
【０００２】[0002]
【従来の技術】近年、患者の腹部に数々所穿刺孔を設
け、穿刺孔から腹腔鏡や鉗子を挿入して異常な胆のうを
摘出するという腹腔鏡下胆のう摘出術が広く行われるよ
うになってきた。2. Description of the Related Art In recent years, laparoscopic cholecystectomy has been widely performed in which a patient's abdomen is provided with a number of puncture holes and a laparoscope or forceps is inserted through the puncture holes to remove an abnormal gallbladder. It was
【０００３】このような内視鏡術にあって、人体体腔内
に内視鏡の挿入部を挿入するとき、その挿入を補助する
挿入案内管が例えば、実公昭５７−２７４４１号公報に
おいて知られている。この挿入案内管は適度な可撓性を
有する管本体と、この管本体の後端に設けられた手元部
とからなり、この挿入案内管を内視鏡の挿入部後方に装
着して、その挿入部のみを体腔内に挿入し、さらにその
挿入案内管を挿入案内として挿入部を押し進めることに
より、内視鏡挿入部を体腔内深部まで挿入するものであ
る。In such endoscopy, when inserting the insertion portion of the endoscope into the human body cavity, an insertion guide tube for assisting the insertion is known, for example, from Japanese Utility Model Publication No. 57-27441. ing. This insertion guide tube is composed of a tube body having an appropriate flexibility and a hand portion provided at the rear end of the tube body. The insertion guide tube is attached to the rear of the insertion portion of the endoscope, and By inserting only the insertion portion into the body cavity and further pushing the insertion portion with the insertion guide tube as the insertion guide, the insertion portion of the endoscope is inserted deep into the body cavity.
【０００４】また、図１０に示すように、軟性内視鏡の
挿入部２を胆のう管３に設けた切開口４により挿入して
総胆管５の内部まで進め、総胆管５の内部の結石を除去
する結石除去術も試みられてきている。Further, as shown in FIG. 10, the insertion portion 2 of the flexible endoscope is inserted through the incision 4 provided in the bile duct 3, and is advanced to the inside of the common bile duct 5 to remove the calculi inside the common bile duct 5. Stone removal techniques have also been attempted.
【０００５】この内視鏡の挿入方法は、胆のう管３がぐ
らつかない様に胆のう７を鉗子６で固定させて胆のう管
３に切開口４を設ける。次に、内視鏡挿入部２の内部の
チャンネルにガイドワイヤ８を挿入させておいて、この
ガイドワイヤ８を胆のう管３の切開口４に挿入する。In this endoscope insertion method, the gallbladder 7 is fixed with forceps 6 so that the gallbladder tube 3 does not wobble, and an incision 4 is provided in the gallbladder tube 3. Next, the guide wire 8 is inserted into the channel inside the endoscope insertion portion 2, and the guide wire 8 is inserted into the incision 4 of the gallbladder duct 3.
【０００６】そして、ガイドワイヤ８を胆のう管３から
総胆管５へと進めていく。前記ガイドワイヤ８をガイド
にして挿入部２を胆のう管３の切開口４に押し込む。そ
してさらに押し込んで胆のう管３から総胆管５へと内視
鏡を進める。Then, the guide wire 8 is advanced from the gallbladder duct 3 to the common bile duct 5. Using the guide wire 8 as a guide, the insertion portion 2 is pushed into the incision 4 of the gallbladder duct 3. Then, it is pushed further to advance the endoscope from the gallbladder duct 3 to the common bile duct 5.
【０００７】[0007]
【発明が解決しようとする課題】前述したように従来の
内視鏡用挿入案内管では、胆のう管３に挿入される内視
鏡は設計上、挿入部２の径方向の中心にチャンネルを位
置させることは困難である。従って、チャンネル内に挿
通されるガイドワイヤ８は、挿入部２の径の中心から離
れた位置から延出させることにならざるを得ない。As described above, in the conventional insertion guide tube for an endoscope, the endoscope inserted into the gallbladder tube 3 is designed so that the channel is located at the center of the insertion portion 2 in the radial direction. It is difficult to get it done. Therefore, the guide wire 8 that is inserted into the channel must be extended from a position away from the center of the diameter of the insertion portion 2.
【０００８】また、内視鏡はイメージガイドファイバー
等の内蔵物が内装されているため、相応に外径が太い。
従って、先端よりガイドワイヤ８を延出した状態の内視
鏡挿入部は先端において外径の段差が生じている。Further, since the endoscope has a built-in component such as an image guide fiber, the outer diameter is accordingly large.
Therefore, the endoscope insertion portion with the guide wire 8 extended from the tip has a step of outer diameter at the tip.
【０００９】よって、ガイドワイヤ８が挿入部２の挿入
のためのガイドの役割を果たさず、図１１に示すよう
に、内視鏡挿入部２が挿入し得る胆のう管３の切開口４
を設けたとしても、挿入部２の先端が切開口４入口に引
っ掛かり、スムーズに挿入できないという問題があっ
た。本発明は前記事情に着目してなされたもので、その
目的とするところは、内視鏡の細管内への挿入性を向上
させる内視鏡用挿入案内管を提供することにある。Therefore, the guide wire 8 does not serve as a guide for inserting the insertion portion 2, and as shown in FIG. 11, the incision 4 of the gallbladder tube 3 into which the endoscope insertion portion 2 can be inserted.
However, even if it is provided, there is a problem that the tip of the insertion portion 2 is caught in the entrance of the cut opening 4 and cannot be inserted smoothly. The present invention has been made in view of the above circumstances, and an object thereof is to provide an endoscope insertion guide tube that improves the insertability of the endoscope into a thin tube.
【００１０】[0010]
【課題を解決するための手段】本発明は、前記目的を達
成するために、内視鏡挿入部を先端から突出させる内視
鏡用挿入案内管において、先端にガイドワイヤが挿通可
能な小孔を有した細径部から挿入案内管外径に至るまで
をテーパ状にした弾性テーパ状部材を設けた。In order to achieve the above-mentioned object, the present invention provides an endoscope insertion guide tube in which an endoscope insertion portion is projected from the tip, and a small hole into which a guide wire can be inserted at the tip. An elastic taper member is provided that is tapered from the small diameter portion having the above to the outer diameter of the insertion guide tube.
【００１１】[0011]
【作用】このように構成された内視鏡用挿入案内管によ
れば、ガイドワイヤが挿通可能な小孔を具備し細径部か
ら挿入案内管外径に至るまでをテーパ状に形成された弾
性テーパ状部材により、挿入案内管内の内視鏡先端より
偏心して延出されたガイドワイヤが調心されると共に、
挿入案内管の先端が鋭角なテーパ形状となっているので
挿入部の先端が切開口に引っ掛かることなくスムーズに
胆のう管に挿入されるようになる。According to the insertion guide tube for an endoscope constructed as described above, a small hole through which a guide wire can be inserted is provided, and a taper is formed from the small diameter portion to the insertion guide tube outer diameter. The elastic taper member aligns the guide wire that is eccentrically extended from the distal end of the endoscope in the insertion guide tube, and
Since the tip of the insertion guide tube has an acute taper shape, the tip of the insertion portion can be smoothly inserted into the gallbladder tube without being caught in the incision.
【００１２】[0012]
【実施例】以下、本発明の各実施例を図面に基づいて説
明する。図１〜図５は第１実施例を示すもので、トラカ
ール１０を介して腹腔９内に挿入された内視鏡挿入部１
１及び内視鏡用挿入案内管としてのシース１２を示す。Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show the first embodiment, and the endoscope insertion portion 1 inserted into the abdominal cavity 9 through the trocar 10.
1 and a sheath 12 as an insertion guide tube for an endoscope are shown.
【００１３】前記トラカール１０は、一般的に使用され
ている公知のトラカールと同様のもので、外套管１３と
内針（図示しない）とから構成されている。この外套管
１３は、先端より管状部１４と、トランペットバルブ部
１５及び基端側のシール部１６とから構成されている。
この外套管１３の長手方向には前記内針が挿通される管
路１７が設けられている。The trocar 10 is similar to a commonly used trocar and is composed of an outer tube 13 and an inner needle (not shown). The outer tube 13 is composed of a tubular portion 14, a trumpet valve portion 15 and a base end side seal portion 16 from the tip.
A pipe line 17 through which the inner needle is inserted is provided in the longitudinal direction of the outer tube 13.
【００１４】前記管状部１４は腹壁９を貫通する部分で
ある。前記トランペットバルブ部１５は、管路１７に挿
入されるシース１２や内針がその管路１７の長手方向に
移動するのを防ぐものである。前記管路１７と直交する
ピストン１８には管路１７と同形の穴１９が設けられて
おり、ピストン１８は、このピストン１８の図面右側に
設けられたばね２０の長手方向の伸張力によって図面左
側方向へ付勢されている。すなわち、ピストン１８は通
常何も管路１７に挿通されていない場合には、トランペ
ットバルブ部１５の図中左側に押し寄せられ、管路１７
は閉じた状態となっている。The tubular portion 14 is a portion that penetrates the abdominal wall 9. The trumpet valve portion 15 prevents the sheath 12 and the inner needle inserted into the duct 17 from moving in the longitudinal direction of the duct 17. The piston 18 orthogonal to the pipe line 17 is provided with a hole 19 having the same shape as the pipe line 17, and the piston 18 is moved to the left side in the drawing by the extension force of the spring 20 provided on the right side in the drawing of the piston 18 in the longitudinal direction. Is urged to. That is, the piston 18 is normally pushed to the left side of the trumpet valve portion 15 in the drawing when nothing is inserted into the pipe line 17, and
Is closed.
【００１５】前記ピストン１８の端部にはボタン２１が
設けられている。このボタン２１をばね２０の伸張力に
逆って図面右側に押し込むとピストン１８に設けられて
いる穴１９が下降し管路１７が開通する。つまり、図１
に示すように、この管路１７にシース１２を挿通する。
したがって、シース１２にはばね２０の伸張力による剪
断力が常に掛かっている。外套管１３の基端側のシール
部１６にはドーナツ状の弾性部材２２が設けられてお
り、挿通される内視鏡１１と管路１７との隙間をシール
している。A button 21 is provided at the end of the piston 18. When this button 21 is pushed to the right side of the drawing against the extension force of the spring 20, the hole 19 provided in the piston 18 descends and the pipe line 17 is opened. That is, FIG.
As shown in, the sheath 12 is inserted through the conduit 17.
Therefore, the sheath 12 is constantly subjected to the shearing force due to the extension force of the spring 20. A donut-shaped elastic member 22 is provided on the seal portion 16 on the proximal end side of the outer tube 13, and seals the gap between the endoscope 11 and the duct 17 to be inserted.
【００１６】前記管路１７には前記シース１２が挿通さ
れる。このシース１２は内視鏡挿入部１１を挿通できる
内径を有している。基端部には弾性部材２３が設けられ
ており、シース１２内周と挿入部２との隙間をシールし
ている。The sheath 12 is inserted through the conduit 17. The sheath 12 has an inner diameter that allows the endoscope insertion portion 11 to be inserted therethrough. An elastic member 23 is provided at the base end portion to seal the gap between the inner circumference of the sheath 12 and the insertion portion 2.
【００１７】図中２４は可撓性のあるチューブ体であ
り、このチューブ体２４の一部外表面には硬性の管状部
材２５が設けられている。このチューブ体２４はポリエ
チレン、四フッ化エチレン等の樹脂よりなる。前記管状
部材２５はシース１２を管路１７に挿入した状態におい
て、ピストン１８に当接し、ばね２０によるピストン１
８の付勢力を受ける位置にある。つまり、シース１２の
先端を外套管１３の先端と同一としたときにピストン１
８がシース１２を付勢する位置からシース１２を外套管
１３に最大限挿入したときにピストン１８がシース１２
を付勢する位置までの少なくとも一部に管状部材２５が
設けられている。In the figure, reference numeral 24 denotes a flexible tube body, and a hard tubular member 25 is provided on a part of the outer surface of the tube body 24. The tube body 24 is made of a resin such as polyethylene or tetrafluoroethylene. The tubular member 25 abuts on the piston 18 in a state where the sheath 12 is inserted into the pipe line 17, and the piston 1 is moved by the spring 20.
It is in a position to receive the biasing force of 8. That is, when the tip of the sheath 12 is made the same as the tip of the outer tube 13, the piston 1
When the sheath 12 is maximally inserted into the outer tube 13 from a position where the sheath 8 is biased by the piston 8, the piston 18
The tubular member 25 is provided at least at a part up to the position for urging.
【００１８】前記シース１２の先端部を図２に示す。前
記チューブ体２４の先端には例えばシリコンゴム、ポリ
ウレタン等からなる弾性テーパ状部材３０が接着剤等に
より固着されている。The tip of the sheath 12 is shown in FIG. An elastic taper member 30 made of, for example, silicone rubber, polyurethane or the like is fixed to the tip of the tube body 24 with an adhesive or the like.
【００１９】弾性テーパ状部材３０はほぼ円錐形状で、
基端側より太径部３１，テーパ部３２、細径部３３より
成る。図２に示すように、太径部３１はチューブ体２４
と略同一の外径を有している。テーパ部３２は細径部３
３に至るまでの移行部で、テーパ状にスムーズに細径化
されて成る。細径部３３には長手方向に太径部３１やテ
ーパ部３２の内周面から連続する小孔３４が設けられて
いる。この小孔３４には前記内視鏡挿入部１１のチャン
ネルから伸びるガイドワイヤ３５が挿通される構成とな
っている。この小孔３４は、図２に示すように、通常、
閉じた状態となっている。The elastic tapered member 30 has a substantially conical shape,
It is composed of a large diameter portion 31, a tapered portion 32, and a small diameter portion 33 from the base end side. As shown in FIG. 2, the large-diameter portion 31 has the tube body 24.
And has an outer diameter substantially the same as. The tapered portion 32 is the small diameter portion 3
The transition portion up to 3 is smoothly tapered in diameter. The small diameter portion 33 is provided with a small hole 34 extending from the inner peripheral surface of the large diameter portion 31 or the tapered portion 32 in the longitudinal direction. A guide wire 35 extending from the channel of the endoscope insertion portion 11 is inserted into the small hole 34. As shown in FIG. 2, this small hole 34 is usually
It is in a closed state.
【００２０】このように構成された内視鏡用挿入案内管
によれば、図３に示すように、ガイドワイヤ３５を弾性
テーパ状部材３０の先端より突出させ、内視鏡挿入部１
１をシース１２内に挿入する。挿入部１１の中心より偏
心した位置より延出されたガイドワイヤ３５は、テーパ
部３２内周面で調心され小孔３４へ導かれる。続いてガ
イドワイヤ３５は小孔３４を押し広げながらシース１２
の先端より延出される。図４は挿入部１１をシース１２
内にさらに押し進めた状態である。この図３から図４の
状態で胆のう管切開口３６への挿入を行う。According to the endoscope insertion guide tube configured as described above, as shown in FIG. 3, the guide wire 35 is projected from the distal end of the elastic taper member 30, and the endoscope insertion portion 1 is inserted.
1 is inserted into the sheath 12. The guide wire 35 extending from a position eccentric from the center of the insertion portion 11 is aligned on the inner peripheral surface of the tapered portion 32 and guided to the small hole 34. Subsequently, the guide wire 35 pushes the small hole 34 open,
Is extended from the tip of. FIG. 4 shows the insertion portion 11 with the sheath 12
It is in a state of being pushed further inside. In the state shown in FIGS. 3 to 4, the insertion into the gallbladder duct opening 36 is performed.
【００２１】まず、ガイドワイヤ３５を胆のう管切開口
３６へ挿入する。そしてガイドワイヤ３５をガイドに、
挿入部１１を内装した状態のシース１２を押し進める。
ガイドワイヤ３５がシース１２の中心に位置する上、ガ
イドワイヤ３５からチューブ体２４に至るまでがスムー
ズなテーパ状をなしているのでシース１２はスムーズに
胆のう管切開口３６に挿入される。シース１２を胆のう
管切開口３６に挿入後、ガイドワイヤ３５を挿入部１１
より抜去し、挿入部１１のみさらに押し進める。そして
テーパ部３２や細径部３３に設けてある小孔３４を押し
広げてシース１２の先端より内視鏡挿入部１１を突出
し、胆のう管３、そして総胆管５へと挿入部１２を挿入
していく。First, the guide wire 35 is inserted into the bile duct opening 36. Then, using the guide wire 35 as a guide,
The sheath 12 with the insertion portion 11 inside is pushed forward.
Since the guide wire 35 is positioned at the center of the sheath 12 and the guide wire 35 and the tube body 24 have a smooth taper shape, the sheath 12 is smoothly inserted into the cystectomy opening 36. After inserting the sheath 12 into the bile duct opening 36, the guide wire 35 is inserted into the insertion portion 11.
It is further removed, and only the insertion part 11 is pushed further. Then, the small hole 34 provided in the tapered portion 32 or the small-diameter portion 33 is expanded to protrude the endoscope insertion portion 11 from the distal end of the sheath 12, and the insertion portion 12 is inserted into the gallbladder duct 3 and the common bile duct 5. To go.
【００２２】したがって、内視鏡から偏心して突出され
るガイドワイヤ３５が内視鏡シース１２の中心に位置さ
れると共に、細径部３３からシース１２外径までがスム
ーズなテーパ状となるので、胆のう管３の細管への内視
鏡の挿入が容易になる。この内視鏡の挿入性の向上によ
り、術時間が短縮でき、術者、患者の負担を低減される
という効果が得られる。Therefore, since the guide wire 35 which is eccentrically projected from the endoscope is located at the center of the endoscope sheath 12, and the portion from the small diameter portion 33 to the outer diameter of the sheath 12 is smoothly tapered, The endoscope can be easily inserted into the thin tube of the gallbladder tube 3. By improving the insertability of the endoscope, the operation time can be shortened and the burden on the operator and the patient can be reduced.
【００２３】次に、本発明の第２実施例を図６及び図７
に基づいて説明する。図６において、図２と同様にシー
ス１２の先端部を示す。第１実施例における弾性テーパ
状部材３０の細径部３３の先端には円錐形状の突起３７
が設けられている。この突起３７の径の中心には小孔３
４が設けられている。Next, a second embodiment of the present invention will be described with reference to FIGS. 6 and 7.
It will be explained based on. In FIG. 6, the distal end portion of the sheath 12 is shown as in FIG. A conical projection 37 is provided at the tip of the small diameter portion 33 of the elastic tapered member 30 in the first embodiment.
Is provided. At the center of the diameter of the protrusion 37, the small hole 3
4 are provided.
【００２４】このように構成された内視鏡用挿入案内管
によれば、図７において第１実施例と同様にガイドワイ
ヤ３５を先端から突出させ、挿入部１１がチューブ体２
４内に収納された状態のシース１２を胆のう管切開口３
６に挿入した後、シース１２に対して挿入部１１を押し
進める。すると突起３７が胆のう管切開口３６の近傍の
内周面に係止される。According to the endoscope insertion guide tube thus constructed, the guide wire 35 is projected from the distal end in the same manner as in the first embodiment in FIG.
The sheath 12 in the state of being housed inside the gallbladder 4.
After being inserted in 6, the insertion portion 11 is pushed forward with respect to the sheath 12. Then, the protrusion 37 is locked to the inner peripheral surface near the gallbladder duct opening 36.
【００２５】したがって、突起３７が胆のう管３の内周
面に係止されるので、挿入部１１をさらに奥の胆のう管
３に進めていく際や抜いていく際にシース１２が胆のう
管切開口３６より脱落することがない。従って、図１０
で示した従来の方式のように、挿入部１１が総胆管５ま
で到達するまでの間、挿入部１１が押し込まれる力に抗
するために鉗子６で胆のう７若しくは胆のう側の胆のう
管３を固定しておく必要がなくなる。つまり挿入部１１
が胆のう管切開口３６に一端挿入できてしまえば、鉗子
６で胆のう７や胆のう管３を固定せずとも、スムーズに
挿入部１１を送り込むことができる。Therefore, since the projection 37 is locked to the inner peripheral surface of the gallbladder duct 3, the sheath 12 is opened by the sheath 12 when the insertion portion 11 is further advanced to the far distal gallbladder duct 3 or withdrawn. It does not fall off from 36. Therefore, FIG.
As in the conventional method shown in, until the insertion portion 11 reaches the common bile duct 5, the gallbladder 7 or the gallbladder duct 3 on the side of the gallbladder is fixed with the forceps 6 in order to resist the force with which the insertion portion 11 is pushed. There is no need to keep it. That is, the insertion part 11
If it can be inserted into the gallbladder duct incision opening 36 once, the insertion portion 11 can be smoothly fed without fixing the gallbladder 7 or the gallbladder duct 3 with the forceps 6.
【００２６】本発明の第３実施例を図８に基づいて説明
する。図８に示すように、挿入部１１とシース１２の内
周面との間に管状部材４０を介在させた構成となってい
る。この管状部材４０は前記挿入部１１が挿通できる内
径を有し、前記シース１２の内部に挿入できる外径を有
する。また、弾性テーパ状部材３０の細径部３３の先端
には円錐形状の突起３７が設けられている。この突起３
７の径の中心には小孔３４が設けられている。A third embodiment of the present invention will be described with reference to FIG. As shown in FIG. 8, the tubular member 40 is interposed between the insertion portion 11 and the inner peripheral surface of the sheath 12. The tubular member 40 has an inner diameter that allows the insertion portion 11 to be inserted therethrough, and an outer diameter that allows it to be inserted into the sheath 12. Further, a conical projection 37 is provided at the tip of the small diameter portion 33 of the elastic tapered member 30. This protrusion 3
A small hole 34 is provided at the center of the diameter of 7.
【００２７】このように構成された第３実施例の内視鏡
用挿入案内管によれば、ガイドワイヤ３５を先端から突
出させ、挿入部１１がチューブ体２４内に収納された状
態の弾性テーパ状部材３０を胆のう管切開口３６に挿入
する。その後、管状部材４０をシース１２に対して前進
させて細径部３３まで進める。すると第２実施例同様に
突起３７が胆のう管切開口３６の近傍の内周面に係止さ
れる。その後挿入部１１を胆のう管３内や総胆管５内へ
と進める。According to the endoscope insertion guide tube of the third embodiment constructed as described above, the elastic taper in a state where the guide wire 35 is projected from the distal end and the insertion portion 11 is housed in the tube body 24 is provided. The member 30 is inserted into the bile duct incision 36. Then, the tubular member 40 is advanced with respect to the sheath 12 and advanced to the small diameter portion 33. Then, similarly to the second embodiment, the projection 37 is locked to the inner peripheral surface near the gallbladder duct incision 36. Thereafter, the insertion portion 11 is advanced into the gallbladder duct 3 and the common bile duct 5.
【００２８】したがって、挿入部１１が弾性テーパ状部
材３０のテーパ部３２や細径部３３の内周面にしごかれ
ることが無いので内視鏡挿入部１１に余計な負担が掛か
らない。Therefore, the insertion portion 11 is not squeezed by the inner peripheral surface of the tapered portion 32 of the elastic taper member 30 or the small diameter portion 33, so that the endoscope insertion portion 11 is not overloaded.
【００２９】また、管状部材４０を細径部３３の内側に
位置させておけば、シース１２内の挿入部１１の有無に
関わらず、シース１２が胆のう管切開口３６より抜け落
ちることがない。従って内視鏡挿入部１１をシース１２
から抜去した後に、造影用チューブや洗滌用チューブに
取り替えることで簡単に内視鏡以外のものを総胆管５に
まで進めることができる。Further, if the tubular member 40 is positioned inside the small diameter portion 33, the sheath 12 will not fall out of the gallbladder incision opening 36 regardless of the presence or absence of the insertion portion 11 in the sheath 12. Therefore, the endoscope insertion portion 11 is attached to the sheath 12
After being removed from the body, the tube other than the endoscope can be easily advanced to the common bile duct 5 by replacing it with a contrast tube or a cleaning tube.
【００３０】[0030]
【発明の効果】本発明は、前述の如く構成したから、内
視鏡から偏心して突出されるガイドワイヤが内視鏡シー
スで中心に位置されると共に、細径部から挿入案内管外
径に至るまでがスムーズなテーパ状となるので、胆のう
管の細管への内視鏡の挿入が容易になる。この内視鏡の
挿入性の向上により、術時間が短縮でき、術者、患者の
負担を低減されるという効果が得られる。Since the present invention is configured as described above, the guide wire that is eccentrically projected from the endoscope is positioned at the center of the endoscope sheath, and the outer diameter of the insertion guide tube changes from the small diameter portion. The smooth taper shape makes it easy to insert the endoscope into the thin tube of the gallbladder. By improving the insertability of the endoscope, the operation time can be shortened and the burden on the operator and the patient can be reduced.
【図１】本発明の第１実施例の内視鏡用挿入案内管の断
面図。FIG. 1 is a sectional view of an endoscope insertion guide tube according to a first embodiment of the present invention.
【図２】同実施例の弾性テーパ状部材の断面図。FIG. 2 is a cross-sectional view of the elastic tapered member of the same embodiment.
【図３】同実施例の弾性テーパ状部材からガイドワイヤ
を突出させた状態の断面図。FIG. 3 is a cross-sectional view showing a state in which a guide wire is projected from the elastic tapered member of the embodiment.
【図４】同実施例のシース内部に内視鏡が挿通した状態
の断面図。FIG. 4 is a cross-sectional view showing a state in which an endoscope is inserted inside the sheath of the embodiment.
【図５】同実施例の内視鏡が胆のう管内部に挿入した状
態の断面図。FIG. 5 is a cross-sectional view showing a state in which the endoscope of the embodiment is inserted inside the gallbladder duct.
【図６】本発明の第２実施例の弾性テーパ状部材の断面
図。FIG. 6 is a sectional view of an elastic tapered member according to a second embodiment of the present invention.
【図７】同実施例の内視鏡が胆のう管内部に挿入した状
態の断面図。FIG. 7 is a cross-sectional view showing a state in which the endoscope of the embodiment is inserted inside the gallbladder duct.
【図８】本発明の第３実施例の内視鏡が胆のう管内部に
挿入した状態の断面図。FIG. 8 is a cross-sectional view showing a state in which the endoscope of the third embodiment of the present invention is inserted inside the gallbladder duct.
【図９】従来の内視鏡用挿入案内管の斜視図。FIG. 9 is a perspective view of a conventional insertion guide tube for an endoscope.
【図１０】従来の内視鏡用挿入案内管の側面図。FIG. 10 is a side view of a conventional insertion guide tube for an endoscope.
１１…内視鏡挿入部、１２…シース、２４…チューブ
体、２５…硬性管状部材、３０…弾性テーパ状部材、３
３…細径部、３４…小孔、３５…ガイドワイヤ。DESCRIPTION OF SYMBOLS 11 ... Endoscope insertion part, 12 ... Sheath, 24 ... Tube body, 25 ... Hard tubular member, 30 ... Elastic taper member, 3
3 ... small diameter part, 34 ... small hole, 35 ... guide wire.
Claims (1)
鏡用挿入案内管において、先端にガイドワイヤが挿通可
能な小孔を有した細径部から挿入案内管外径に至るまで
をテーパ状にした弾性テーパ状部材を設けたことを特徴
とする内視鏡用挿入案内管。1. In an insertion guide tube for an endoscope in which an endoscope insertion portion is projected from a tip, a portion from a small diameter portion having a small hole through which a guide wire can be inserted to a diameter of the insertion guide tube is provided. An insertion guide tube for an endoscope, which is provided with a tapered elastic taper member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15354992A JP3191981B2 (en) | 1992-06-12 | 1992-06-12 | Endoscope insertion guide tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15354992A JP3191981B2 (en) | 1992-06-12 | 1992-06-12 | Endoscope insertion guide tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05337076A true JPH05337076A (en) | 1993-12-21 |
| JP3191981B2 JP3191981B2 (en) | 2001-07-23 |
Family
ID=15564942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15354992A Expired - Fee Related JP3191981B2 (en) | 1992-06-12 | 1992-06-12 | Endoscope insertion guide tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3191981B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007082766A (en) * | 2005-09-22 | 2007-04-05 | Fujinon Corp | Hood for endoscope |
| JP2007301364A (en) * | 2006-05-08 | 2007-11-22 | Ethicon Endo Surgery Inc | Endoscopic translumenal surgical system |
| US8945058B2 (en) | 2006-11-22 | 2015-02-03 | Applied Medical Resources Corporation | Trocar cannula with atraumatic tip |
| JP2016131748A (en) * | 2015-01-20 | 2016-07-25 | オリンパス株式会社 | Guide sheath, insertion aid, and endoscope system |
-
1992
- 1992-06-12 JP JP15354992A patent/JP3191981B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007082766A (en) * | 2005-09-22 | 2007-04-05 | Fujinon Corp | Hood for endoscope |
| JP2007301364A (en) * | 2006-05-08 | 2007-11-22 | Ethicon Endo Surgery Inc | Endoscopic translumenal surgical system |
| US8551058B2 (en) | 2006-05-08 | 2013-10-08 | Ethicon Endo-Surgery, Inc. | Endoscopic translumenal surgical systems |
| US8945058B2 (en) | 2006-11-22 | 2015-02-03 | Applied Medical Resources Corporation | Trocar cannula with atraumatic tip |
| US10485578B2 (en) | 2006-11-22 | 2019-11-26 | Applied Medical Resources Corporation | Trocar cannula with atraumatic tip |
| JP2016131748A (en) * | 2015-01-20 | 2016-07-25 | オリンパス株式会社 | Guide sheath, insertion aid, and endoscope system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3191981B2 (en) | 2001-07-23 |
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