JP2000175923A - Foreign matter removing device - Google Patents

Foreign matter removing device

Info

Publication number
JP2000175923A
JP2000175923A JP10355804A JP35580498A JP2000175923A JP 2000175923 A JP2000175923 A JP 2000175923A JP 10355804 A JP10355804 A JP 10355804A JP 35580498 A JP35580498 A JP 35580498A JP 2000175923 A JP2000175923 A JP 2000175923A
Authority
JP
Japan
Prior art keywords
coil spring
foreign matter
coil
core wire
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.)
Pending
Application number
JP10355804A
Other languages
Japanese (ja)
Inventor
Seiji Shimura
誠司 志村
Yoshinobu Nakakoshi
義信 中越
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.)
Asahi Intecc Co Ltd
Original Assignee
Asahi Intecc Co Ltd
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
Application filed by Asahi Intecc Co Ltd filed Critical Asahi Intecc Co Ltd
Priority to JP10355804A priority Critical patent/JP2000175923A/en
Publication of JP2000175923A publication Critical patent/JP2000175923A/en
Pending legal-status Critical Current

Links

Landscapes

  • Surgical Instruments (AREA)
  • Cleaning In General (AREA)

Abstract

PROBLEM TO BE SOLVED: To easily and safely remove foreign matters stuck to the internal wall of a blood vessel and a urethra or the like only by executing a rotary operation or a reciprocative sliding operation by forming a device by means of a core wire and a coil sprint to be fixed on the outer periphery of the tip part of the core wire and providing an extended diameter part in the coil spring. SOLUTION: This foreign matter removing device 1 is inserted to the blood vessel 5 or the like and jabs the lump of foreign matters 6 such as a coil or a stent stuck to the internal wall by a head 4. In this case, the extended diameter part 3c of the coil spring at the tip part is brought into contact with the internal wall over the whole periphery so that the head 4 can loosen the lump of the foreign matter 6 without injuring the wall of the blood vessel by the occurrence of contact resistance between the part 3c and the internal wall while keeping the axial center position. After that, the core wire 2 is rotated in the winding direction (an arrow direction) of the coil spring 3. Then the foreign matter 6 loosened by the rotated extended diameter part 3c is stripped from the internal wall and the device 1 is pulled-out so that the stripped foreign matter 6 is scraped out by the extended diameter part 3c.

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】本発明は血管、尿道等の内部
の異物を除去するための装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing foreign matter inside blood vessels, urethra and the like.

【0002】[0002]

【発明の背景】例えば動脈瘤治療法の一つとして、動脈
瘤内にステンレススチール、プラチナ等の金属の線材の
コイルを該動脈瘤内に充填し、該動脈瘤内の血液によっ
て血栓を作って血液の流入を防いで動脈瘤の破裂を防止
する方法がある。上記方法にあっては該コイルが動脈瘤
からはみ出したり、あるいは血管内へ脱落する場合があ
り、このような場合はコイルは異物として血管内から除
去する必要がある。
BACKGROUND OF THE INVENTION For example, as one of the aneurysm treatment methods, a coil of a metal wire such as stainless steel or platinum is filled in the aneurysm, and a blood clot is formed by blood in the aneurysm. There is a method of preventing the inflow of blood to prevent the rupture of the aneurysm. In the above method, the coil may protrude from the aneurysm or fall into the blood vessel. In such a case, the coil needs to be removed from the blood vessel as a foreign substance.

【0003】更に血管閉塞部の治療法の一つとして、経
皮的冠状動脈形成術(PTCA)がある。該PTCAに
あっては、ガイドワイヤおよびバルーンカテーテルを用
いて血管閉塞部を拡径して心筋の酸素需要の増大に見合
うだけの十分な冠血量を回復させたり、またこのような
効果を長期にわたって維持するため、ステンレススチー
ルや形状記憶合金からなる網筒であるステント等の留置
具を該拡径部分に留置して拡径状態を維持している。上
記方法にあっては、治療時患部に対する留置具の位置ず
れが生じて血管閉塞部から離れ、更に血流により留置具
の血管内での遊動が起こり、この場合には該留置具を異
物として血管内から除去する必要がある。
[0003] Further, as one of the methods for treating a vascular occlusion, there is percutaneous coronary angioplasty (PTCA). The PTCA uses a guidewire and a balloon catheter to expand the vascular occlusion to restore coronary blood volume sufficient to meet the increased myocardial oxygen demand. In order to maintain the expanded diameter, an indwelling device such as a stent, which is a mesh tube made of stainless steel or a shape memory alloy, is indwelled in the enlarged diameter portion to maintain the enlarged diameter state. In the above method, the position of the indwelling device relative to the diseased part during treatment occurs, the indwelling device moves away from the vascular occlusion, and furthermore, the inflow of the indwelling device in the blood vessel occurs due to the blood flow. It must be removed from the blood vessels.

【0004】[0004]

【従来の技術】従来、この種の異物を血管内から除去す
るには、ステンレススチールや形状記憶合金等からなる
金属線の先端にリングを形成した装置を使用し、該リン
グによって異物を引掛けて除去するか、あるいは該金属
線の先端部をJ状に屈曲したコイルとした装置を使用
し、該コイルによって異物を引掛けて除去する方法が採
られていた。
2. Description of the Related Art Conventionally, in order to remove this kind of foreign matter from the inside of a blood vessel, a device in which a ring is formed at the tip of a metal wire made of stainless steel or a shape memory alloy is used, and the foreign matter is hooked by the ring. Or using a device in which the tip of the metal wire is formed into a coil bent in a J-shape, and the foreign matter is hooked and removed by the coil.

【0005】[0005]

【発明が解決しようとする課題】上記従来方法では装置
先端部が硬く血管が傷つくおそれがある。また異物を引
掛けるための操作に熟練が必要となる。
In the above-mentioned conventional method, the distal end of the device is hard and the blood vessel may be damaged. In addition, the operation for catching foreign matter requires skill.

【0006】[0006]

【課題を解決するための手段】本発明は上記従来の課題
を解決する手段として、芯線(2) と、該芯線(2) の先端
部外周に固定されているコイルスプリング(3) とからな
り、該コイルスプリング(3) は拡径部分(3C)を有する異
物の除去装置、あるいはチューブ(17)と、該チューブ(1
7)内に摺動可能に挿通され先端部が該チューブ(17)から
外出している操作線(12)と、該チューブ(17)先端と該操
作線(12)先端とに差渡されているコイルスプリング(13)
と、該チューブ(17)内に挿通され先端部が該コイルスプ
リング(13)に固定されている支持線(16)とからなり、該
コイルスプリング(13)は該支持線(16)固定部より先端側
において拡径部分(13A) を有する異物の除去装置を提供
するものである。該コイルスプリング(3,13)の先端部に
は放射線不透過性材料が使用されているか、または該芯
線(2) 外周あるいは該操作線(12)外周には放射線不透過
性材料からなるコイル(15)が固定されていることが望ま
しい。
The present invention, as a means for solving the above-mentioned conventional problems, comprises a core wire (2) and a coil spring (3) fixed to the outer periphery of the distal end of the core wire (2). The coil spring (3) includes a foreign matter removing device having an enlarged diameter portion (3C) or a tube (17) and the tube (1).
7) An operation line (12) slidably inserted into the tube and having a distal end out of the tube (17), and is passed over the distal end of the tube (17) and the distal end of the operation line (12). Coil spring (13)
And a support wire (16) which is inserted into the tube (17) and has a distal end fixed to the coil spring (13), and the coil spring (13) is separated from the support wire (16) fixing portion. An object of the present invention is to provide a foreign matter removing device having an enlarged diameter portion (13A) on the distal end side. A radiopaque material is used at the tip of the coil springs (3, 13), or a coil made of a radiopaque material is formed around the core wire (2) or the outer periphery of the operation wire (12). It is desirable that 15) be fixed.

【0007】[0007]

【作用】〔請求項1の発明〕装置(1) を外部から血管や
尿道等の内部に挿入し、所定個所にコイルスプリング
(3) の拡径部分(3C)を位置させ、該芯線(2) をコイルス
プリング(3) の巻き方向に回転させると、異物(6) は該
拡径部分(3C)に引掛けられ、回転にともなって血管や尿
道等の内壁より剥離され、芯線(2) 根端方向へ移動して
掻き寄せられる。 〔請求項3の発明〕装置(11)を外部から血管や尿道等の
内部に挿入し、支持線(16)を固定しておいて操作線(12)
をチューブ(17)内で往復摺動させる。そうするとコイル
スプリング(13)の拡径部分(13A) が伸縮して異物(6) は
血管や尿道等の内壁より剥離される。
[Invention] [Invention of claim 1] The device (1) is inserted into a blood vessel, urethra or the like from the outside, and a coil spring is
When the expanded portion (3C) of (3) is positioned and the core wire (2) is rotated in the winding direction of the coil spring (3), the foreign matter (6) is hooked on the expanded portion (3C), With rotation, it is peeled off from the inner walls of blood vessels, urethra, etc., and moves toward the root of the core wire (2) and is scraped. [Invention of claim 3] The device (11) is inserted into the inside of a blood vessel, urethra or the like from the outside, and the support line (16) is fixed and the operation line (12) is fixed.
Is reciprocated in the tube (17). Then, the enlarged diameter portion (13A) of the coil spring (13) expands and contracts, and the foreign matter (6) is peeled off from the inner walls of blood vessels, urethra and the like.

【0008】[0008]

【発明の実施の形態】〔請求項1の発明の実施例〕請求
項1の発明の実施例を図1および図2に示す。図に示す
異物の除去装置(1) は、芯線(2) と、該芯線(2) の先端
部外周に固定されているコイルスプリング(3) と、該芯
線(2) の先端に取付けられているドーム状のヘッド(4)
とからなり、該コイルスプリング(3) は先端をヘッド
(4) にロウ付け等によって接着され、根端を芯線(2) に
ロウ付け等によって接着されている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment of the Invention] The first embodiment of the invention is shown in FIGS. The foreign matter removing device (1) shown in the figure comprises a core wire (2), a coil spring (3) fixed to the outer periphery of the distal end of the core wire (2), and a device attached to the distal end of the core wire (2). Domed head (4)
The coil spring (3) has a tip at the head.
(4) and the root end is bonded to the core wire (2) by brazing or the like.

【0009】該コイルスプリング(3) はステンレススチ
ール等の放射線透過材料からなる放射線透過性部分(3A)
と、プラチナ等の放射線不透過材料からなる放射線不透
過性部分(3B)とからなり、放射線不透過性部分(3B)には
提灯状の拡径部分(3C)が形成されている。
The coil spring (3) has a radiolucent portion (3A) made of a radiolucent material such as stainless steel.
And a radiopaque portion (3B) made of a radiopaque material such as platinum, and a lantern-shaped enlarged portion (3C) is formed in the radiopaque portion (3B).

【0010】上記装置(1) は図2に示すように例えば血
管(5) 内に挿入され、血管(5) 内壁に付着しているコイ
ルやステント等の異物(6) の塊りを該装置(1) のヘッド
(4)で突く。この場合、先端部のコイルスプリング(3)
の拡径部分(3C)が血管内の内壁と略全周にわたって接し
ているので、ヘッド(4) は軸中心位置を保持しながらか
つ該コイルスプリング(3) の拡径部分(3C)と血管(5) の
内壁との間の接触抵抗が生じ、その結果血管壁を傷つけ
ることなく異物(6) の塊りをほぐすことが出来る。その
上で該装置(1) の芯線(2) をコイルスプリング(3) の巻
き方向(矢印イ方向)に回転させる。そうすると回転す
る拡径部分(3C)によってほぐされた異物(6) は血管(5)
の内壁から矢印ロ方向へ剥離する。そして該装置(1) を
血管(5)内から引き抜くことによって剥離した異物(6)
は該拡径部分(3C)によって掻き出される。なお、装置
(1) の先端部の位置はX線によって放射線不透過性部分
(3B)を検出することによって確認される。
The device (1) is inserted into, for example, a blood vessel (5) as shown in FIG. 2 and removes a lump of foreign matter (6) such as a coil or a stent adhering to the inner wall of the blood vessel (5). (1) Head
Poke with (4). In this case, the coil spring (3) at the tip
Since the enlarged portion (3C) of the coil spring (3C) is in contact with the inner wall of the blood vessel over substantially the entire circumference, the head (4) maintains the axial center position and the enlarged portion (3C) of the coil spring (3) and the enlarged portion (3C) of the coil spring (3). The contact resistance with the inner wall of (5) is generated, and as a result, the lump of the foreign body (6) can be loosened without damaging the blood vessel wall. Then, the core wire (2) of the device (1) is rotated in the direction in which the coil spring (3) is wound (the direction of arrow A). Then, the foreign matter (6) loosened by the rotating enlarged part (3C) becomes a blood vessel (5).
From the inner wall in the direction of arrow B. The device (1) is pulled out of the blood vessel (5) and the foreign matter (6) peeled off
Is scraped off by the enlarged diameter portion (3C). The device
(1) The position of the tip is radiopaque by X-ray
Confirmed by detecting (3B).

【0011】〔請求項3の発明の実施例〕請求項3の発
明の実施例を図3および図4に示す。図に示す異物の除
去装置(11)は、操作線(12)と、該操作線(12)の先端部外
周に固定されているコイルスプリング(13)と、該操作線
(12)先端に取付けられているドーム状のヘッド(14)と、
該コイルスプリング(13)の内側において該操作線(12)に
固定されている放射線不透過性コイル(15)と、該コイル
スプリング(13)の先端部にその先端部がロウ付けされて
いる支持線(16)と、該コイルスプリング(13)の根端部よ
り該操作線(12)と該支持線(16)とを被覆するカバーチュ
ーブ(17)とからなり、該コイルスプリング(13)はステン
レススチールからなり、その先端部には提灯状の拡径部
分(13A) が形成され、該コイルスプリング(13)の先端は
ヘッド(14)にロウ付けされ、根端はカバーチューブ(17)
の先端部にキャップ(18)を介して固定され、該カバーチ
ューブ(17)の根端部にはプラグ(19)が嵌着され、該操作
線(12)は該プラグ(19)内に摺動可能に挿通され、該支持
線(16)は該プラグ(19)内に固定されている。該キャップ
(18)は加熱収縮、融着、あるいは接着剤を使用してコイ
ルスプリング(13)とカバーチューブ(17)の先端部とに固
定されている。
[Embodiment of the Invention of Claim 3] An embodiment of the invention of claim 3 is shown in FIGS. The foreign matter removing device (11) shown in the figure includes an operation line (12), a coil spring (13) fixed to the outer periphery of the distal end of the operation line (12),
(12) a dome-shaped head (14) attached to the tip,
A radiopaque coil (15) fixed to the operation line (12) inside the coil spring (13), and a support having a tip end brazed to the tip end of the coil spring (13). A wire (16) and a cover tube (17) that covers the operation wire (12) and the support wire (16) from the root end of the coil spring (13), and the coil spring (13) It is made of stainless steel and has a lantern-shaped enlarged portion (13A) formed at the tip, the tip of the coil spring (13) is brazed to the head (14), and the root end is a cover tube (17).
The cover tube (17) has a plug (19) fitted to the tip of the cover tube (17) via a cap (18), and the operation line (12) slides into the plug (19). It is movably inserted, and the support wire (16) is fixed in the plug (19). The cap
(18) is fixed to the coil spring (13) and the tip of the cover tube (17) by heat shrinkage, fusion, or using an adhesive.

【0012】上記装置(11)は例えば血管(5) 内に挿入さ
れ、前実施例と同様に血管(5) 内壁に付着している異物
(6) の塊りをヘッド(14)で突いてほぐし、その上で該装
置(11)の支持線(16)を固定して操作線(12)を図3矢印ハ
方向そして図4矢印ニ方向に往復摺動させる。そうする
と該コイルスプリング(13)の拡径部分(13A) が伸縮して
ほぐされた異物(6) を血管(5) の内壁から剥離する。そ
して該装置(11)を血管(5) から引き抜くことによって剥
離した異物(6) は該拡径部分(13A) によって掻き出され
る。なお、装置(11)の先端部の位置は、前実施例と同様
X線によって放射線不透過性コイル(15)を検出すること
によって確認される。
The device (11) is inserted into, for example, a blood vessel (5), and foreign substances adhered to the inner wall of the blood vessel (5) as in the previous embodiment.
The lump of (6) is struck with the head (14) to loosen it, and then the support line (16) of the device (11) is fixed, and the operation line (12) is moved in the direction of arrow C in FIG. Slide back and forth in the direction. Then, the expanded portion (13A) of the coil spring (13) expands and contracts, and the loosened foreign material (6) is peeled off from the inner wall of the blood vessel (5). The foreign matter (6) peeled off by withdrawing the device (11) from the blood vessel (5) is scraped out by the enlarged diameter portion (13A). The position of the tip of the device (11) is confirmed by detecting the radiopaque coil (15) by X-rays as in the previous embodiment.

【0013】[0013]

【発明の効果】本発明の装置は、回転操作あるいは往復
摺動操作を行なうだけで、血管や尿道等の内壁に付着し
た異物を簡単かつ安全に除去することが出来るから、熟
練は必要としない。
According to the apparatus of the present invention, foreign matter adhering to an inner wall of a blood vessel, a urethra, or the like can be easily and safely removed only by performing a rotating operation or a reciprocating sliding operation, so that no skill is required. .

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

図1および図2は請求項1の発明の実施例を示すもので
ある。
1 and 2 show an embodiment of the first aspect of the present invention.

【図1】側面図FIG. 1 is a side view

【図2】異物剥離状態説明図図3および図4は請求項3
の発明の実施例を示すものである。
FIG. 2 is an explanatory view of a foreign matter peeling state.
1 shows an embodiment of the present invention.

【図3】縮小状態の側面図FIG. 3 is a side view of a contracted state.

【図4】伸長状態側面図FIG. 4 is a side view of an extended state.

【符号の説明】[Explanation of symbols]

2 芯線 3,13 コイルスプリング 3C,13A 拡径部分 12 操作線 15 放射線不透過性コイル 16 支持線 17 チューブ 2 core wire 3,13 Coil spring 3C, 13A Expanded part 12 Operation wire 15 Radiopaque coil 16 Support wire 17 Tube

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】芯線と、該芯線の先端部外周に固定されて
いるコイルスプリングとからなり、該コイルスプリング
は拡径部分を有することを特徴とする異物の除去装置
1. An apparatus for removing foreign matter, comprising: a core wire; and a coil spring fixed to an outer periphery of a distal end portion of the core wire, wherein the coil spring has an enlarged diameter portion.
【請求項2】該コイルスプリングの先端部には放射線不
透過性材料が使用されているか、または該芯線外周には
放射線不透過性材料からなるコイルが固定されている請
求項1に記載の異物の除去装置
2. The foreign matter according to claim 1, wherein a radiopaque material is used at the tip of said coil spring, or a coil made of a radiopaque material is fixed to the outer periphery of said core wire. Removal equipment
【請求項3】チューブと、該チューブ内に摺動可能に挿
通され先端部が該チューブから外出している操作線と、
該チューブ先端と該操作線先端とに差渡されているコイ
ルスプリングと、該チューブ内に挿通され先端部が該コ
イルスプリングに固定されている支持線とからなり、該
コイルスプリングは該支持線固定部より先端側において
拡径部分を有することを特徴とする異物の除去装置
3. An operation line which is slidably inserted into the tube and whose distal end is out of the tube.
A coil spring extending between the distal end of the tube and the distal end of the operation wire; and a support wire inserted into the tube and having a distal end fixed to the coil spring. The coil spring is fixed to the support wire. Foreign matter removing device characterized in that it has an enlarged diameter portion on the distal end side of the portion.
【請求項4】該コイルスプリングの先端部には放射線不
透過性材料が使用されているか、または該操作線外周に
は放射線不透過性材料からなるコイルが固定されている
請求項3に記載の異物の除去装置
4. The coil spring according to claim 3, wherein a radiopaque material is used at the tip of the coil spring, or a coil made of a radiopaque material is fixed to the outer periphery of the operation line. Foreign matter removal device
JP10355804A 1998-12-15 1998-12-15 Foreign matter removing device Pending JP2000175923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10355804A JP2000175923A (en) 1998-12-15 1998-12-15 Foreign matter removing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10355804A JP2000175923A (en) 1998-12-15 1998-12-15 Foreign matter removing device

Publications (1)

Publication Number Publication Date
JP2000175923A true JP2000175923A (en) 2000-06-27

Family

ID=18445840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10355804A Pending JP2000175923A (en) 1998-12-15 1998-12-15 Foreign matter removing device

Country Status (1)

Country Link
JP (1) JP2000175923A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004510485A (en) * 2000-09-29 2004-04-08 プリムス メディカル, インク. Snare equipment
WO2009031795A1 (en) * 2007-09-03 2009-03-12 E2St Co., Ltd. Flexible wire for removing scale in pipe
JP2009525136A (en) * 2006-02-01 2009-07-09 ザ・クリーブランド・クリニック・ファンデーション Method and apparatus for increasing blood flow through a blocked blood vessel
JP2015530179A (en) * 2012-09-28 2015-10-15 アヴェント インコーポレイテッド Self-aligned tracheal tube dirt remover using color
CN107753092A (en) * 2017-11-30 2018-03-06 彭翼 Intracavitary Endarterectomy device
CN117084753A (en) * 2023-10-19 2023-11-21 长沙金维医疗科技有限公司 Double-channel thrombus aspiration catheter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027808A1 (en) * 1996-02-02 1997-08-07 Regents Of The University Of California Clot capture coil
JPH10151136A (en) * 1996-07-25 1998-06-09 Target Therapeutics Inc Mechanical blood clot treatment device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027808A1 (en) * 1996-02-02 1997-08-07 Regents Of The University Of California Clot capture coil
JP2000504595A (en) * 1996-02-02 2000-04-18 リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア Blood clot capture coil
JPH10151136A (en) * 1996-07-25 1998-06-09 Target Therapeutics Inc Mechanical blood clot treatment device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004510485A (en) * 2000-09-29 2004-04-08 プリムス メディカル, インク. Snare equipment
JP2009525136A (en) * 2006-02-01 2009-07-09 ザ・クリーブランド・クリニック・ファンデーション Method and apparatus for increasing blood flow through a blocked blood vessel
US8366663B2 (en) 2006-02-01 2013-02-05 The Cleveland Clinic Foundation Method and apparatus for increasing blood flow through an obstructed blood vessel
US10201359B2 (en) 2006-02-01 2019-02-12 Cleveland Clinic Foundation, The Method and apparatus for increasing blood flow through an obstructed blood vessel
WO2009031795A1 (en) * 2007-09-03 2009-03-12 E2St Co., Ltd. Flexible wire for removing scale in pipe
US8091333B2 (en) 2007-09-03 2012-01-10 E2St Co., Ltd. Flexible wire for removing scale in pipe
JP2015530179A (en) * 2012-09-28 2015-10-15 アヴェント インコーポレイテッド Self-aligned tracheal tube dirt remover using color
CN107753092A (en) * 2017-11-30 2018-03-06 彭翼 Intracavitary Endarterectomy device
CN107753092B (en) * 2017-11-30 2024-01-19 彭翼 Intra-cavity intima stripping device
CN117084753A (en) * 2023-10-19 2023-11-21 长沙金维医疗科技有限公司 Double-channel thrombus aspiration catheter
CN117084753B (en) * 2023-10-19 2024-01-05 长沙金维医疗科技有限公司 Double-channel thrombus aspiration catheter

Similar Documents

Publication Publication Date Title
CN108056798B (en) Support pushing system, corresponding blood flow guiding device and blood flow guiding device assembling method
US6955685B2 (en) Expandable stent with radiopaque markers and stent delivery system
US11497895B2 (en) Expandable tip medical devices and methods
US8540763B2 (en) Detachable self-expanding aneurysm cover device
US5387219A (en) Medical retrieval snare with coil wrapped loop
JP4067966B2 (en) Removable self-expanding aneurysm cover device
EP1374801B1 (en) Expandable stent and delivery system
EP1439797B1 (en) Vascular embolic filter exchange devices
JP4414767B2 (en) Fixation device for vascular occlusion device in aneurysm
US20020188314A1 (en) Radiopaque distal embolic protection device
US20050149110A1 (en) Vascular catheter with an expandable section and a distal tip for delivering a thromboembolic protection device and method of use
US20060161198A1 (en) Medical wire device
JP2000175923A (en) Foreign matter removing device
JP2005270394A (en) Dilating assist of tubular organ treatment instrument
EP3621533B1 (en) Device for retrieval of material from vessel lumens
JP5537861B2 (en) Protective stent system
JP2024059380A (en) Filter Device
CN111568501A (en) Double-layer telescopic thrombus catching device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20051201

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20071212

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20080403