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JP2002078804A - Contrast tube for endoscope - Google Patents

Contrast tube for endoscope

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Publication number
JP2002078804A
JP2002078804A JP2000271204A JP2000271204A JP2002078804A JP 2002078804 A JP2002078804 A JP 2002078804A JP 2000271204 A JP2000271204 A JP 2000271204A JP 2000271204 A JP2000271204 A JP 2000271204A JP 2002078804 A JP2002078804 A JP 2002078804A
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JP
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Patent type
Prior art keywords
tube
end
portion
endoscope
flexible
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.)
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JP2000271204A
Other languages
Japanese (ja)
Inventor
Tomoshi Kidooka
Teruo Ouchi
輝雄 大内
智志 木戸岡
Original Assignee
Asahi Optical Co Ltd
旭光学工業株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide a contrast tube for an endoscope, capable of being easily inserted from a duodenum side into an exit opening of a pancreas-bile duct.
SOLUTION: The end face of a flexible tube 1 is formed in wedge shape by obliquely cutting an end portion 1a of the flexible tube 1, and its ridge portion is smoothly rounded.
COPYRIGHT: (C)2002,JPO

Description

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

【0001】 [0001]

【発明の属する技術分野】この発明は、内視鏡の処置具挿通チャンネルに挿通されて膵胆管内等に造影剤を送り込むために用いられる内視鏡用造影チューブに関する。 TECHNICAL FIELD The present invention relates to an endoscopic imaging tube used to be inserted into the treatment instrument insertion channel of an endoscope feed the contrast medium into pancreaticobiliary tube or the like.

【0002】 [0002]

【従来の技術】内視鏡用造影チューブは、一般に、可撓性チューブの基端に注射筒等を接続するための口金が取り付けられただけの構成になっており、先端部分は単純な円筒状又は先細りのテーパ状に形成されている。 BACKGROUND OF THE INVENTION endoscopic imaging tube, generally, the proximal end of the flexible tube has become a syringe or the like to the structure of only the die is attached for connecting the tip portions simple cylindrical Jo or tapered is formed in a tapered shape.

【0003】 [0003]

【発明が解決しようとする課題】図8は、先細りのテーパ状に形成された造影チューブ1の先端部分1aが、十二指腸側から膵胆管の出口開口100に差し込まれようとしている状態を示している。 8 The object of the invention is to solve the above-tip portion 1a of the cannula 1 which is formed in a tapered tapered shape, and shows a state that is about to be inserted from duodenum into the outlet opening 100 of cholangiopancreatography .

【0004】膵胆管の出口開口100があるファーター氏乳頭部分は括約筋であり、通常は閉じている。 [0004] Vater's papilla part where there is the outlet opening 100 of cholangiopancreatography is a sphincter, usually is closed. 一方、 on the other hand
造影チューブ1の先端部分は、十二指腸ファイバスコープの処置具挿通チャンネルから突出すると、図8に示されるように円弧状の曲がり癖が付いた形状になっている。 The tip portion of the cannula 1, when protruded from the treatment instrument insertion channel of the duodenum fiberscope has a shape which with arcuate bending tendency as shown in FIG.

【0005】したがって、造影チューブ1を膵胆管の出口開口100の正面に位置させて手元側から押し込む操作をしても、造影チューブ1の先端面が膵胆管の出口開口100の粘膜表面で滑って側方に逃げてしまい、膵胆管内に差し込むのは容易ではない。 Accordingly, even if an operation by positioning the imaging tube 1 in front of the outlet opening 100 of cholangiopancreatography pushed from the proximal side, the distal end surface of the cannula 1 is slipped mucosal surface of the outlet opening 100 of cholangiopancreatography escapes to the side, it is not easy to plug into the pancreatic duct and biliary duct tube. そのため、膵胆管を造影するのに非常に長時間を要する場合が多く、患者に大きな負担を与えていた。 For this reason, often takes a very long period of time to contrast the cholangiopancreatography, he had given a heavy burden on the patient.

【0006】そこで本発明は、十二指腸側から膵胆管の出口開口内に容易に挿入することができる内視鏡用造影チューブを提供することを目的とする。 [0006] The present invention aims at providing a contrast tube for an endoscope which can be easily inserted into the outlet opening of the cholangiopancreatography from the duodenum side.

【0007】 [0007]

【課題を解決するための手段】上記の目的を達成するため、本発明の内視鏡用造影チューブは、少なくとも先端寄りの部分が可撓性チューブによって形成された内視鏡用造影チューブにおいて、可撓性チューブの先端面が可撓性チューブの先端部分を斜めにカットして楔状に形成され、その稜線部分が滑らかに丸められているものである。 To achieve the above object, according to an aspect of endoscopic imaging tube of the present invention is the endoscope imaging tube at least part of the tip-sided is formed by a flexible tube, the distal end surface of the flexible tube is formed in a wedge shape to the tip portion is obliquely cut in the flexible tube, in which the ridge portion is rounded smoothly.

【0008】なお、可撓性チューブの先端近傍部分が、 [0008] Incidentally, the tip portion near the flexible tube,
先側へ次第に細くなるテーパ状に形成されていてもよく、可撓性チューブの先端近傍部分が、それより後方の部分より細い径に形成されていてもよい。 May be formed in a tapered shape which tapers to the front side, near the tip portion of the flexible tube, it than may be formed into a thin diameter than the rear portion.

【0009】 [0009]

【発明の実施の形態】図面を参照して本発明の実施例を説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to the drawings illustrating the embodiment of the present invention. 図2は、十二指腸ファイバスコープの処置具挿通チャンネルを経由して膵胆管内に造影剤を送り込むために用いられる造影チューブ1を示している。 Figure 2 shows the cannula 1 which is used to feed the contrast medium pancreaticobiliary tube via a treatment tool insertion channel of the duodenum fiberscope.

【0010】造影チューブ1は、例えば四フッ化エチレン樹脂チューブ又はポリエチレン樹脂チューブ等からなる直径が2mm程度で長さが2m程度の可撓性チューブにより形成されており、先端近傍部には所定の間隔で目盛り3が付され、基端側には造影剤注入口金2が取り付けられている。 [0010] Contrast tube 1, for example, a length tetrafluoroethylene resin tube or diameter about 2mm made of polyethylene resin tube or the like is formed by a flexible tube of about 2m, the tip vicinity of the predetermined interval scale 3 attached in, are attached contrast injection mouthpiece 2 at the base end side. また、腰折れ防止のための芯金が必要に応じて挿通配置される。 Moreover, it is inserted and arranged as required core metal for buckling prevention.

【0011】図1は造影チューブ1の先端付近を示しており、造影チューブ1の先端面は、造影チューブ1の先端部分1aを斜めにカットして楔状に形成されている。 [0011] Figure 1 shows the vicinity of the distal end of the cannula 1, the distal end surface of the cannula 1 is formed in a wedge shape by cutting the tip portion 1a of the cannula 1 obliquely.
その角度θは例えば10〜50°程度の範囲であり、その稜線部分は滑らかに丸められている。 The angle θ is in the range of, for example, about 10 to 50 °, the edge line portion is smoothly rounded. なお、これは後述の各実施例においても同じである。 Note that this is the same in each embodiment described below.

【0012】図3は、図示されていない十二指腸ファイバスコープの処置具挿通チャンネルに上記実施例の内視鏡用造影チューブが挿通されて、造影チューブ1の先端部分1aが十二指腸側から膵胆管の出口開口100に差し込まれようとしている状態を示している。 [0012] Figure 3 is an endoscopic imaging tube inserted in the above embodiment the treatment instrument insertion channel of the duodenum fiberscope not shown, tip portion 1a of the cannula 1 from the duodenum side cholangiopancreatography outlet It shows a state that is about to be inserted into the opening 100.

【0013】造影チューブ1の先端部分1aが楔状に形成されているので、造影チューブ1の先端部分1aを膵胆管の出口開口100に押し付けると、楔の先端部分が膵胆管の出口開口100の小さな窪みに嵌まり込む状態になり、さらに造影チューブ1を手元側から押し込むと、図4から図5に順に示されるように、造影チューブ1の先端部分1aが楔面で膵胆管の出口開口100を押し広げながら膵胆管内に入っていく。 [0013] Since the distal end portion 1a of the cannula 1 is formed in a wedge shape, is pressed against the front end portion 1a of the cannula 1 into the outlet opening 100 of cholangiopancreatography, the tip portion of the wedge is ne small outlet opening 100 of cholangiopancreatography ready to fit into the recess, is further pushed to the cannula 1 from the proximal side, as shown in sequence in FIGS. 5 4, the tip portion 1a of the cannula 1 is an outlet opening 100 of cholangiopancreatography wedge surface going into the pancreatic duct and biliary duct tube while expanding press.

【0014】このように、造影チューブ1の先端部分1 [0014] In this way, the distal end portion of the contrast tube 1 1
aが楔状に形成されていることにより、膵胆管の出口開口100部分に狭窄等があっても、造影チューブ1の先端部分1aはそれを押し広げながらスムーズに膵胆管内に差し込まれて、膵胆管内に造影剤を注入することができる。 By a is formed in a wedge shape, even if stenosis or the like to the outlet opening 100 portion of cholangiopancreatography, plugged smoothly pancreaticobiliary tube while widening it the tip portion 1a of the cannula 1, pancreatic it is possible to inject contrast into the bile duct.

【0015】そして、造影チューブ1の先端部分1aが楔状に形成されているが、その稜線が滑らかに丸められているので、膵胆管への挿入時に粘膜面に引っ掛かったり傷つけたりするおそれがない。 [0015] Then, although the tip portion 1a of the cannula 1 is formed in a wedge shape, since the ridges are rounded smooth and there is no risk of damaging or caught on the mucosal surface upon insertion into cholangiopancreatography.

【0016】なお、造影チューブ1の先端部分1aの形状は上記実施例に限定されるものではなく、例えば図6 [0016] The shape of the tip portion 1a of the cannula 1 is not limited to the above embodiments, for example FIG. 6
に示されるように、先側へ次第に細くなるテーパ状に形成されて、その先端面が第1実施例と同様の楔状に形成されていてもよい。 As shown in, is formed in a tapered shape which tapers to the front side, the front end surface may be formed on the same wedge in the first embodiment.

【0017】また、図7に示されるように、造影チューブ1の先端部分1aがそれより後方の部分より細い径に形成されて、その先端面が第1実施例と同様の楔状に形成されていてもよい。 Further, as shown in FIG. 7, the contrast tip portion 1a of the tube 1 is formed from a narrow diameter than the rear portion that its tip end surface is formed on the same wedge in the first embodiment it may be. また、細い径の部分が先細りのテーパ状であってもよい。 The portion of the narrow diameter may be tapered tapered.

【0018】 [0018]

【発明の効果】本発明の内視鏡用造影チューブによれば、先端面が可撓性チューブの先端部分を斜めにカットして楔状に形成されていることにより、その先端が膵胆管の出口開口の小さな窪みに嵌まり込んで、膵胆管の出口開口に狭窄等があってもそれを押し広げながらスムーズに膵胆管内に差し込むことができるので、膵胆管内に容易に造影剤を注入することができる。 According to the endoscopic imaging tube of the present invention, according to the present invention, by the front end surface of the distal end portion of the flexible tube is cut diagonally are formed in a wedge shape, the tip of cholangiopancreatography outlet fits into the opening of the small recess, it is possible to insert smoothly while widening it even if stenosis or the like to the exit opening of cholangiopancreatography the pancreaticobiliary tube, to inject readily contrast medium pancreaticobiliary tube be able to.

【0019】そして、可撓性チューブの先端面の稜線部分が滑らかに丸められているので、膵胆管への挿入時に粘膜面に引っ掛かったり傷つけたりするおそれがない。 [0019] Then, since the ridge line portion of the distal end surface of the flexible tube it is rounded smooth and there is no risk of damaging or caught on the mucosal surface upon insertion into cholangiopancreatography.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の第1の実施例の内視鏡用造影チューブの先端近傍部分の一部を断面で示す側面図である。 A portion of the tip vicinity of the first embodiment endoscopic imaging tube of the present invention; FIG is a side view showing in cross-section.

【図2】本発明の第1の実施例の内視鏡用造影チューブの全体構成を示す外観図である。 2 is an external view showing the overall configuration of a first embodiment endoscopic imaging tube of the present invention.

【図3】本発明の第1の実施例の内視鏡用造影チューブの使用状態を示す略示図である。 3 is a schematic view showing the use state of the first embodiment endoscopic imaging tube of the present invention.

【図4】本発明の第1の実施例の内視鏡用造影チューブの使用状態を示す略示図である。 It is a schematic view showing a state of use of endoscopic imaging tube of the first embodiment of the present invention; FIG.

【図5】本発明の第1の実施例の内視鏡用造影チューブの使用状態を示す略示図である。 5 is a schematic view showing the use state of the first embodiment endoscopic imaging tube of the present invention.

【図6】本発明の第2の実施例の内視鏡用造影チューブの先端近傍部分の側面断面図である。 6 is a side cross-sectional view of the tip vicinity of the endoscopic imaging tube of the second embodiment of the present invention.

【図7】本発明の第3の実施例の内視鏡用造影チューブの先端近傍部分の側面断面図である。 7 is a side cross-sectional view of a third near the tip portion of the endoscope for imaging tube embodiment of the present invention.

【図8】従来の内視鏡用造影チューブの使用状態を示す略示図である。 8 is a schematic view showing a usage state of a conventional endoscopic imaging tube.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 造影チューブ 1a 先端部分 100 膵胆管の出口開口 1 the cannula 1a tip portion 100 outlet opening of the cholangiopancreatography

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】少なくとも先端寄りの部分が可撓性チューブによって形成された内視鏡用造影チューブにおいて、 上記可撓性チューブの先端面が上記可撓性チューブの先端部分を斜めにカットして楔状に形成され、その稜線部分が滑らかに丸められていることを特徴とする内視鏡用造影チューブ。 1. A portion of at least the tip-sided is in endoscopic imaging tube formed by a flexible tube, the distal end surface of the flexible tube is cut obliquely the tip portion of the flexible tube is formed in a wedge shape, endoscopic imaging tube, characterized in that the ridge line portion is rounded smoothly.
  2. 【請求項2】上記可撓性チューブの先端近傍部分が、先側へ次第に細くなるテーパ状に形成されている請求項1 2. A near the tip portion of the flexible tube, according to claim which is tapered to tapers to the front side 1
    記載の内視鏡用造影チューブ。 The endoscopic imaging tube according.
  3. 【請求項3】上記可撓性チューブの先端近傍部分が、それより後方の部分より細い径に形成されている請求項1 3. A near the tip portion of the flexible tube, according to claim it from being formed into a thin diameter than the rear portion 1
    又は2記載の内視鏡用造影チューブ。 Or endoscopic imaging tube according.
JP2000271204A 2000-09-07 2000-09-07 Contrast tube for endoscope Withdrawn JP2002078804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000271204A JP2002078804A (en) 2000-09-07 2000-09-07 Contrast tube for endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000271204A JP2002078804A (en) 2000-09-07 2000-09-07 Contrast tube for endoscope

Publications (1)

Publication Number Publication Date
JP2002078804A true true JP2002078804A (en) 2002-03-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000271204A Withdrawn JP2002078804A (en) 2000-09-07 2000-09-07 Contrast tube for endoscope

Country Status (1)

Country Link
JP (1) JP2002078804A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57113152U (en) * 1980-12-29 1982-07-13
JPS6239744U (en) * 1985-04-22 1987-03-10
JPH0999089A (en) * 1995-10-06 1997-04-15 Olympus Optical Co Ltd Catheter
JPH11318820A (en) * 1998-05-20 1999-11-24 Olympus Optical Co Ltd Catheter for endoscope

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57113152U (en) * 1980-12-29 1982-07-13
JPS6239744U (en) * 1985-04-22 1987-03-10
JPH0999089A (en) * 1995-10-06 1997-04-15 Olympus Optical Co Ltd Catheter
JPH11318820A (en) * 1998-05-20 1999-11-24 Olympus Optical Co Ltd Catheter for endoscope

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