JP3306854B2 - Catheter for removal of porosity thrombus - Google Patents

Catheter for removal of porosity thrombus

Info

Publication number
JP3306854B2
JP3306854B2 JP19737194A JP19737194A JP3306854B2 JP 3306854 B2 JP3306854 B2 JP 3306854B2 JP 19737194 A JP19737194 A JP 19737194A JP 19737194 A JP19737194 A JP 19737194A JP 3306854 B2 JP3306854 B2 JP 3306854B2
Authority
JP
Japan
Prior art keywords
catheter
balloon
thrombus
pressurized fluid
blood vessel
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 - Lifetime
Application number
JP19737194A
Other languages
Japanese (ja)
Other versions
JPH0838611A (en
Inventor
秀久 副島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nipro Corp
Original Assignee
Nipro Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=16373393&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JP3306854(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nipro Corp filed Critical Nipro Corp
Priority to JP19737194A priority Critical patent/JP3306854B2/en
Publication of JPH0838611A publication Critical patent/JPH0838611A/en
Application granted granted Critical
Publication of JP3306854B2 publication Critical patent/JP3306854B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

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

【0001】[0001]

【産業上の利用分野】本発明は粥状血栓除去用カテ−テ
ルに関し、更に詳しくはカテ−テル先端で血流を遮断し
て血管内部に生成した粥状血栓を除去するための粥状血
栓除去用カテ−テルに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catheter for removing atheromatous thrombus, and more particularly, to a atheromatous thrombus for removing atheromatous thrombus formed inside a blood vessel by blocking blood flow at the tip of the atherosclerosis. It relates to a removal catheter.

【0002】[0002]

【従来の技術】従来、血管壁に蓄積した粥状血栓を除去
するには、収縮したバル−ンカテ−テルを予め造影剤で
血栓の位置を確認しておいた血管内に挿入し、カテ−テ
ル先端を血栓位置を通過させてからバル−ンを膨張さ
せ、その状態でバル−ン外壁を血管内壁に摺動させなが
らバル−ンカテ−テルを血管内から引き出すことによっ
て、血管に付着していた粥状血栓を掻き出す方法が使用
されている。
2. Description of the Related Art Conventionally, in order to remove a thrombus accumulating in a blood vessel wall, a contracted balloon catheter is inserted into a blood vessel in which the position of the thrombus has been confirmed in advance with a contrast agent, and the catheter is removed. The balloon is inflated after the tip of the ter is passed through the position of the thrombus, and in this state, the balloon catheter is pulled out of the blood vessel while sliding the outer wall of the balloon against the inner wall of the blood vessel, whereby the balloon is attached to the blood vessel. A method of scraping a contaminated thrombus has been used.

【0003】[0003]

【発明が解決しょうとする課題】しかしながら、このバ
ル−ンカテ−テルを使用して粥状血栓を除去する方法
は、バル−ンカテ−テルを血管から抜き取るときに、多
量の血液が粥状血栓とともに噴出するので、血液が損失
するだけでなく、手術室を汚すので粥状血栓を除去する
ための新規な方法が要望されていた。本発明はかかる要
請に応えるためになされた発明であって、本発明の目的
は多量の血液を損失しないで血管内の粥状血栓を除去す
るためのカテ−テルを提供することである。
However, the method of removing porcine thrombus using this balloon catheter involves a large amount of blood together with the porcine thrombus when the balloon catheter is withdrawn from a blood vessel. There is a need for a new method for removing mushy thrombus, which not only causes blood loss, but also fouls the operating room, as it erupts. SUMMARY OF THE INVENTION The present invention has been made to meet such a demand, and an object of the present invention is to provide a catheter for removing atheromatous thrombus in a blood vessel without losing a large amount of blood.

【0004】[0004]

【課題を解決するための手段】すなわち、本発明は閉塞
端近辺の管外壁に設けられた血管を閉塞するための第1
バルーンを有する先端が閉塞された第1カテーテルと、
該第1カテーテルを内挿し前記第1バルーンの位置から離
隔した管外壁に設けられた血栓を除去するための第2バ
ルーンを有する前後に移行可能な第2カテーテルと、第1
カテーテルおよび第2カテーテルの先端付近に設けられ
た第1バルーンおよび第2バルーンに加圧流体を導入して
夫々のバルーンを膨張させる手段とからなる粥状血栓除
去用カテーテルであって、第2カテーテルの先端が第1バ
ルーンの後方で閉塞されてなることを特徴とする粥状血
栓除去用カテーテルである。
That is, the present invention provides a first method for closing a blood vessel provided on an outer wall of a tube near a closed end.
A first catheter having a closed tip having a balloon,
A second catheter that can be moved back and forth having a second balloon for removing a thrombus provided on an outer tube wall that is inserted from the first catheter and separated from the position of the first balloon,
A atherogenic thrombus removal catheter comprising means for introducing a pressurized fluid to the first balloon and the second balloon provided near the distal ends of the catheter and the second catheter to inflate each balloon , wherein the second catheter Is the first bar
Atherosclerosis characterized by obstruction behind the runes
It is a stopper removal catheter.

【0005】[0005]

【作用】本発明粥状血栓除去用カテ−テルは第1バル−
ンおよび第2バル−ンを収縮させた状態でカテ−テル先
端を血管内の下流側から導入し、予め造影剤によって確
認していた血栓位置に第2バル−ンを配置する。次い
で、カテ−テル後端部から延びている第1バル−ンと連
通している第1加圧流体導入管から加圧流体を第1バル
−ンに導入して第1バル−ンを膨張させ血管上流の血流
を遮断する。その後、カテ−テル後端部から延びている
第2バル−ンと連通している第2加圧流体導入管から加
圧流体を第2バル−ンに導入して第2バル−ンを膨張さ
せ第2カテ−テルを後方に移行させることによって、第
2バル−ンは血管内壁を摺動して粥状血栓を除去する。
血栓除去後、第1バル−ンおよび第2バル−ンの加圧流
体を除去して夫々のバル−ンを収縮させ、粥状血栓除去
用カテ−テルを血管内部から取り出す。
According to the present invention, the catheter for removing plaque thrombus is a first valve.
The catheter tip is introduced from the downstream side of the blood vessel while the second balloon and the second balloon are contracted, and the second balloon is placed at the thrombus position previously confirmed by the contrast agent. Next, a pressurized fluid is introduced into the first balloon from a first pressurized fluid introduction pipe communicating with the first balloon extending from the rear end of the catheter to expand the first balloon. Blood flow upstream of the blood vessel. Thereafter, pressurized fluid is introduced into the second balloon from the second pressurized fluid introduction pipe communicating with the second balloon extending from the rear end of the catheter to expand the second balloon. By causing the second catheter to move backward, the second balloon slides on the inner wall of the blood vessel to remove the atheromatous thrombus.
After removal of the thrombus, the pressurized fluid in the first balloon and the second balloon is removed to shrink the respective balloon, and the catheter for removing thrombus is removed from the inside of the blood vessel.

【0006】[0006]

【実施例】以下実施例にて本発明の一例を説明する。図
1は本発明の一実施例を示す粥状血栓除去用カテ−テル
の説明図であり、図2は本発明の一実施例を示す粥状血
栓除去用カテ−テルの要部断面図である。図中、1はカ
テ−テル本体、2は第1バル−ン、3は第2バル−ン、
4は先端閉塞部、5は第1加圧流体導入管、6は第2加
圧流体導入管、7は第1カテ−テル、8は第2カテ−テ
ル、9は第2カテ−テルの先端閉塞部である。
EXAMPLES Examples of the present invention will be described below with reference to examples. FIG. 1 is an explanatory view of a catheter for removing a plaque thrombus showing one embodiment of the present invention, and FIG. 2 is a sectional view of a main part of a catheter for removing a plaque thrombus showing one embodiment of the present invention. is there. In the figure, 1 is a catheter body, 2 is a first balloon, 3 is a second balloon,
Reference numeral 4 denotes a distal end closed portion, 5 denotes a first pressurized fluid introducing pipe, 6 denotes a second pressurized fluid introducing pipe, 7 denotes a first catheter, 8 denotes a second catheter, and 9 denotes a second catheter. It is a tip closing part.

【0007】図1は本発明の一実施例を示す粥状血栓除
去用カテ−テルの説明図であり、先端の閉塞部4近辺の
管外壁には血管を閉塞するための第1バル−ン2を有す
る第1カテ−テル7が、第1バル−ン2を第2カテ−テ
−テル8の先端から突出させて第2カテ−テル8に内挿
されている。そして第1カテ−テル7の内腔後端には第
1バル−ン2を膨張させるための第1加圧流体導入管5
が設置され、加圧流体供給チュ−ブ(図示せず)が連結
されて加圧流体が供給されるようになっている。
FIG. 1 is an explanatory view of a catheter for removing a thrombus in one embodiment of the present invention. A first balloon for closing a blood vessel is provided on an outer wall of a tube in the vicinity of a closed portion 4 at a distal end. A first catheter 7 having a second balloon 2 is inserted into the second catheter 8 with the first balloon 2 protruding from the tip of the second catheter 8. A first pressurized fluid introducing pipe 5 for inflating the first balloon 2 is provided at the rear end of the lumen of the first catheter 7.
Is provided, and a pressurized fluid supply tube (not shown) is connected to supply pressurized fluid.

【0008】第2バル−ン3は第1バル−ン2の位置か
ら離隔した第2カテ−テル8の管外壁に設けられてい
る。第2バル−ン3は血管内壁を摺動して血栓を除去す
る作用をする。第2カテ−テル8は第1カテ−テル7を
内挿して前後に移行することができる。第2カテ−テル
8の先端および後端は開口されていても閉塞されていて
もよい。第2カテ−テル8の端部が閉塞されている場合
には、端部内壁にO−リングまたはゴムパッキングが設
けられ、第1カテ−テル7の外壁を摺動移動しうるよう
になっているのが好ましい。第2カテ−テル8の後方側
壁から第2バル−ン3を膨張させるための第2加圧流体
導入管7が分岐しており、加圧流体供給チュ−ブ(図示
せず)と連結されて加圧流体が供給される。
The second balloon 3 is provided on the outer wall of the tube of the second catheter 8 separated from the position of the first balloon 2. The second balloon 3 works to slide the inner wall of the blood vessel to remove the thrombus. The second catheter 8 can be shifted back and forth by interpolating the first catheter 7. The front and rear ends of the second catheter 8 may be open or closed. When the end of the second catheter 8 is closed, an O-ring or rubber packing is provided on the inner wall of the end, so that the outer wall of the first catheter 7 can slide. Is preferred. A second pressurized fluid introduction pipe 7 for inflating the second balloon 3 branches from a rear side wall of the second catheter 8, and is connected to a pressurized fluid supply tube (not shown). Pressurized fluid is supplied.

【0009】加圧流体としては空気のような気体および
生理食塩水のような液体が使用される。バル−ン材料と
してはポリウレタン、ポリ塩化ビニル、ポリエチレン、
ポリアミド、ポリエステル、シリコ−ン樹脂等の可撓性
樹脂が使用される。またカテ−テルとしてはポリ塩化ビ
ニル、ポリエチレン、ポリプロピレン等の合成樹脂が挙
げられる。
A gas such as air and a liquid such as saline are used as the pressurized fluid. As balloon material, polyurethane, polyvinyl chloride, polyethylene,
Flexible resins such as polyamide, polyester and silicone resins are used. Examples of the catheter include synthetic resins such as polyvinyl chloride, polyethylene, and polypropylene.

【0010】図2は本発明の一実施例を示す粥状血栓除
去用カテ−テルの要部断面図であり、第2カテ−テル8
の先端が第1バル−ン2の後方で先端閉塞部9として閉
塞され、第2バル−ン2が第2カテ−テル8の管外壁に
設けられた粥状血栓除去用カテ−テルである。第1カテ
−テル7の先端は先端閉塞部4として閉塞されており、
第1バル−ン2は先端閉塞部4近辺の外壁に設けられて
いる。第1バル−ン2は加圧流体が第1カテ−テル7の
内腔を通って第1流入口10から入り第1バル−ン2を膨
張させる。第1バル−ン2を収縮させるときは、流体の
加圧状態を常圧または減圧状態にすればよい。
FIG. 2 is a sectional view of a main part of a catheter for removing a plaque-like thrombus, showing an embodiment of the present invention.
Is closed as a tip closing portion 9 behind the first balloon 2, and the second balloon 2 is a catheter for removing plaque thrombus provided on the outer wall of the second catheter 8. . The distal end of the first catheter 7 is closed as a distal end closing portion 4,
The first balloon 2 is provided on an outer wall near the distal end closing portion 4. In the first balloon 2, the pressurized fluid enters through the lumen of the first catheter 7 from the first inlet 10 to expand the first balloon 2. When the first balloon 2 is contracted, the pressurized state of the fluid may be a normal pressure or a reduced pressure state.

【0011】第1カテ−テル7は第2カテ−テル8に内
挿され、第2カテ−テル8の先端は第1バル−ン2の後
方で先端閉塞部9として閉塞されており、血管内の体液
等が第2カテ−テル8の内腔に侵入するのを防止してい
る。第2カテ−テル8先端の閉塞は第2カテ−テル8の
先端内壁に設けた先端閉塞具9であるO−リング12で行
われる。そして、O−リング12は第1カテ−テル7を内
軸として前後に摺動可能なように形成されている。第1
バル−ン2は第2カテ−テル8の先端から突出した構造
をしている。第2バル−ン3は第2カテ−テル8の外壁
に設置されており、第2カテ−テル8の内腔に設けられ
ている第2加圧流体導入管6と第2加圧流体流入口11を
経て連結しており、加圧流体によって膨張、収縮を行う
ようになっている。図2においては、第1カテ−テル7
が第1加圧流体導入管を兼用している。
The first catheter 7 is inserted into the second catheter 8, and the distal end of the second catheter 8 is closed behind the first balloon 2 as a distal end closing portion 9, so that the blood vessel is closed. This prevents body fluids and the like from entering the lumen of the second catheter 8. The distal end of the second catheter 8 is closed by an O-ring 12, which is a distal end closing tool 9 provided on the inner wall of the distal end of the second catheter 8. The O-ring 12 is formed so as to be slidable back and forth with the first catheter 7 as an inner axis. First
The balloon 2 has a structure protruding from the tip of the second catheter 8. The second balloon 3 is installed on the outer wall of the second catheter 8, and the second pressurized fluid introduction pipe 6 provided in the inner cavity of the second catheter 8 and the second pressurized fluid flow The connection is made via an inlet 11 so that expansion and contraction are performed by pressurized fluid. In FIG. 2, the first catheter 7
Are also used as the first pressurized fluid introduction pipe.

【0012】図2の粥状血栓除去用カテ−テルの操作方
法は、第1バル−ン2および第2バル−ン3を収縮させ
た状態でカテ−テル先端部4を血管内の下流側から導入
し、予め造影剤によって確認していた血栓位置に第2バ
ル−ン3を配置する。次いで、カテ−テル後端から延び
ている第1バル−ン2と連通している第1加圧流体導入
管6に相当する第1カテ−テル7の第1流入口10から加
圧流体を第1バル−ン2に導入して第1バル−ン2を膨
張させ血管上流の血流を遮断する。その後、カテ−テル
後端から延びている第2バル−ン3と連通している第2
加圧流体導入管6から加圧流体を第2バル−ン3に導入
して第2バル−ン3を膨張させ、第2カテ−テル8を後
方に移行させることによって第2 バル−ン3が血管内壁
を摺動し粥状血栓は除去される。血栓除去後、第1バル
−ン2および第2バル−ン3の加圧流体を除去して夫々
のバル−ンを収縮させ、粥状血栓除去用カテ−テルを血
管内部から取り出す。
In the method of operating the plaque removing catheter shown in FIG. 2, the distal end portion 4 of the catheter is moved downstream in the blood vessel while the first balloon 2 and the second balloon 3 are contracted. And the second balloon 3 is arranged at the thrombus position previously confirmed by the contrast agent. Next, pressurized fluid is supplied from the first inlet 10 of the first catheter 7 corresponding to the first pressurized fluid introduction pipe 6 communicating with the first balloon 2 extending from the rear end of the catheter. It is introduced into the first balloon 2 to expand the first balloon 2 and cut off the blood flow upstream of the blood vessel. Thereafter, a second balloon 3 communicating with the second balloon 3 extending from the rear end of the catheter is provided.
The second balloon 3 is expanded by introducing a pressurized fluid into the second balloon 3 from the pressurized fluid introduction pipe 6 and moving the second catheter 8 backward. Slides on the inner wall of the blood vessel, and the thrombus is removed. After removing the thrombus, the pressurized fluid in the first balloon 2 and the second balloon 3 is removed to contract each balloon, and the catheter for removing thrombus is removed from the inside of the blood vessel.

【0013】[0013]

【発明の効果】本発明粥状血栓除去用カテ−テルは、血
管内の血流を遮断して粥状血栓を除去するので、動脈か
らの出血を防止しながら血栓を除去することができ、手
術室内を汚染しないで手術することができる。
According to the present invention, a catheter for removing a thrombus can block a blood flow in a blood vessel and remove a thrombus, thereby removing a thrombus while preventing bleeding from an artery. The operation can be performed without contaminating the operating room.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例を示す粥状血栓除去用カテ−
テルの説明図
FIG. 1 shows a categorical thrombus removal catheter showing one embodiment of the present invention.
Illustration of tell

【図2】本発明の一実施例を示す粥状血栓除去用カテ−
テルの要部断面図
FIG. 2 shows a categorical thrombus removal catheter showing one embodiment of the present invention.
Main section sectional view of tell

【符号の説明】[Explanation of symbols]

1 カテ−テル本体 2 第1バル−ン 3 第2バル−ン 4 先端閉塞部 5 第1加圧流体導入管 6 第2加圧流体導入管 7 第1カテ−テル 8 第2カテ−テル 9 第2カテ−テルの先端閉塞部 REFERENCE SIGNS LIST 1 catheter main body 2 first balloon 3 second balloon 4 distal end closing portion 5 first pressurized fluid introduction pipe 6 second pressurized fluid introduction pipe 7 first catheter 8 second catheter 9 Tip closure of the second catheter

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 閉塞端近辺の管外壁に設けられた血管を
閉塞するための第1バルーンを有する先端が閉塞された
第1カテーテルと、該第1カテーテルを内挿し前記第1バ
ルーンの位置から離隔した管外壁に設けられた血栓を除
去するための第2バルーンを有する前後に移行可能な第2
カテーテルと、第1カテーテルおよび第2カテーテルの
端付近に設けられた第1バルーンおよび第2バルーンに加
圧流体を導入して夫々のバルーンを膨張させる手段とか
らなる粥状血栓除去用カテーテルであって、第2カテー
テルの先端が第1バルーンの後方で閉塞されてなること
を特徴とする粥状血栓除去用カテーテル
Claims: 1. A first catheter having a first balloon having a first balloon for closing a blood vessel provided on an outer wall of a tube near a closed end, the first catheter having a distal end closed, and the first catheter inserted thereinto from the position of the first balloon. A second movable back and forth having a second balloon for removing a thrombus provided on a separated outer tube wall
Catheter and the tip of the first and second catheters
A first balloon and second mushy thrombectomy catheter consisting by introducing a balloon pressurized fluid and means for inflating the balloon each provided in the vicinity of the edge, a second Kate
The tip of the teller is obstructed behind the first balloon
A catheter for removing porosity thrombus, characterized in that:
JP19737194A 1994-07-29 1994-07-29 Catheter for removal of porosity thrombus Expired - Lifetime JP3306854B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19737194A JP3306854B2 (en) 1994-07-29 1994-07-29 Catheter for removal of porosity thrombus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19737194A JP3306854B2 (en) 1994-07-29 1994-07-29 Catheter for removal of porosity thrombus

Publications (2)

Publication Number Publication Date
JPH0838611A JPH0838611A (en) 1996-02-13
JP3306854B2 true JP3306854B2 (en) 2002-07-24

Family

ID=16373393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19737194A Expired - Lifetime JP3306854B2 (en) 1994-07-29 1994-07-29 Catheter for removal of porosity thrombus

Country Status (1)

Country Link
JP (1) JP3306854B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6962588B2 (en) 2001-08-31 2005-11-08 Boston Scientific Scimed, Inc. Percutaneous pringle occlusion method and device
US7632296B2 (en) 2005-03-03 2009-12-15 Boston Scientific Scimed, Inc. Rolling membrane with hydraulic recapture means for self expanding stent
US20080051830A1 (en) * 2006-08-24 2008-02-28 Boston Scientific Scimed, Inc. Occluding device and method
CN102159277B (en) * 2008-07-03 2013-08-21 浩特斯博尔技术公司 Apparatus for treating obstructions within body lumens
CN102551842B (en) * 2010-12-24 2016-03-02 刘衍民 Hard mirror stone taking device

Also Published As

Publication number Publication date
JPH0838611A (en) 1996-02-13

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