JPH0542162A - Embolus excision catheter - Google Patents

Embolus excision catheter

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Publication number
JPH0542162A
JPH0542162A JP3229456A JP22945691A JPH0542162A JP H0542162 A JPH0542162 A JP H0542162A JP 3229456 A JP3229456 A JP 3229456A JP 22945691 A JP22945691 A JP 22945691A JP H0542162 A JPH0542162 A JP H0542162A
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JP
Japan
Prior art keywords
ju
member
blood vessel
ether
embolus
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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
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JP3229456A
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Japanese (ja)
Inventor
Masao Horie
政雄 堀江
Original Assignee
Nissho Corp
株式会社ニツシヨー
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Application filed by Nissho Corp, 株式会社ニツシヨー filed Critical Nissho Corp
Priority to JP3229456A priority Critical patent/JPH0542162A/en
Publication of JPH0542162A publication Critical patent/JPH0542162A/en
Application status is Pending legal-status Critical

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Abstract

PURPOSE:To allow the efficient excision of the embolus sticking to the inside wall of a blood vessel without damaging the inside wall of the blood vessel by turning the excision member provided at the front end of a rotational driving shaft connected to a motor. CONSTITUTION:A tube 2 is inserted into the blood vessel and an aperture 14 is installed in the embolus position in the blood vessel. The aperture 14 surface shifts to the inside wall side of the blood vessel and the embolus is inserted into the aperture 14 when the wire 4 is elongated by a wire operating jig 6. In addition, the outside wall of the tube 2 comes into contact with the inside wall of the blood vessel. The excision member 1 rotates and the embolus in the aperture 14 is removed when the rotating member 3 is rotated by operating a switch 12. The aperture 14 is directed to the opposite surface by rotating a front end housing 15 and thereafter, the same operation is repeated. The excised embolus is discharged through the inside of the tube 2 from a discharge port 5 connected to a vacuum source. The embolus is excised in this way without damaging the inside wall of the blood vessel.

Description

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

【0001】 [0001]

【産業上の利用分野】本発明は血管内壁に付着した塞栓を切除するためのカテ−テルに関する。 The present invention relates to a catheter for ablating emboli adhered to the inner wall of a blood vessel - related ether.

【0002】 [0002]

【従来の技術】血管内壁に凝固血液(血栓)またはカルシウムとコレステロ−ルからなる粥腫等(以下塞栓と総称する)が付着すると血流が阻害される。 BACKGROUND ART inner vessel wall to coagulated blood (thrombus) or calcium and cholesterol - the plaque or the like consisting of Le (hereinafter collectively referred to as emboli) from adhering blood flow is inhibited. 例えば冠動脈内の血流が塞栓によって閉塞すると心筋梗塞が起こり、 For example occur myocardial infarction if blood flow in coronary arteries is blocked by emboli,
また肢抹消血管が閉塞すると肢が切断されたりする。 The limb peripheral blood vessels and clogging limb or is disconnected. そのために、早期にこのような塞栓を切除することが要求され、従来から種々の切除方法が行われている。 Therefore, early such emboli are requested to be excised, various ablation methods have been performed.

【0003】例えば、特表昭57−501167号公報には、バル−ンカテ−テルを血管内に挿入し、血管内でカテ−テルのバル−ンを膨張させ、細くなった血管の内径を拡大させることによって血流を確保する方法が紹介されている。 [0003] For example, Kohyo Sho 57-501167, JP-Val - Nkate - the ether was inserted into a blood vessel, the catheter in a blood vessel - Ter Bal - inflating down, a larger inner diameter of the narrowed blood vessel how to ensure the blood flow it has been introduced by. しかし、この方法は単に細くなった血管の内径を拡大して血流を確保するものであるから、一時的に血流が確保できても再狭窄の恐れがある。 However, since this method is to ensure simply narrowed blood flow to expand the inner diameter of the blood vessel temporarily the blood flow there is also a risk of restenosis can be ensured. かかるバル−ンカテ−テルの欠点を克服したものとして米国特許第 4994067 Such Val - Nkate - U.S. Patent No. 4994067 as which overcomes the drawbacks of the ether
号明細書に、血管内にカテ−テルを挿入し、カテ−テルの側壁に設けられた開口部内に血管内壁の塞栓を導入しカテ−テルに内挿された金属製のカッタ−を回転前進させて導入塞栓を切除する、いわゆるアテレクトミ−血管形成方法が紹介され注目を浴びている。 In Pat, catheter into a blood vessel - Insert the ether, catheter - introduced embolus inner vessel wall in an opening provided in the side wall of the ether catheter - interpolated metal cutter ether - the rotational advancement is allowed to cut the introduction emboli, called Aterekutomi - angiogenesis process is bathed introduced attention.

【0004】この塞栓切除カテ−テルは図5に示すように、内側チュ−ブ32を内挿した外側チュ−ブ31の先端は塞栓を切除するためのカッタ−36が接続され、内側チュ−ブ32には駆動軸33が内挿され、その先端はカッタ−36 [0004] The embolectomy catheter - ether, as shown in FIG. 5, the inner Ju - Bed 32 interpolated outer Ju - tip of the probe 31 is connected to the cutter -36 for ablating embolism, inner Ju - the Bed 32 is interpolated drive shaft 33, its tip cutter -36
の滑受部35が設置される。 Slip receiving portion 35 is disposed of. 駆動軸33は内側チュ−ブ32から突出し、先端は血管内を先導するヘッド34が形成され、駆動軸33を回転前進させることによって外側チュ− Drive shaft 33 inside Ju - projecting from Bed 32, tip lead the intravascular head 34 is formed, outer Ju by rotating forward the drive shaft 33 -
ブ31と共にカッタ−36が滑受部35の方向へ回転前進され血管内の塞栓が切除されるようになっている。 Cutter -36 with Bed 31 embolus in the blood vessel is rotated forward in the direction of the sliding receiving portion 35 is adapted to be ablated. そして、 And,
血管内塞栓の切除方法は、図6に示すように先ずカテ− Excision method intravascular emboli, as shown in FIG. 6 first catheter -
テルの開口部40を塞栓37のある位置に設置する(図6 The opening 40 of the ether is placed in a emboli 37 position (FIG. 6
A)。 A). 次いで、ワイヤ−38を伸ばして外側チュ−ブ31の外壁を血管内壁に押しつける(図6B)。 Then, the outer Ju stretched wire -38 - pressing the outer wall of the probe 31 to the inner wall of the blood vessel (Fig. 6B). その後、カッタ−36を回転させながら前進させることによって開口部35 Thereafter, the opening 35 by advancing while rotating the cutter -36
内にある塞栓37が切除される(図6C)。 Embolic 37 is excised in the inside (Fig. 6C). 切除された塞栓小片39は除去される(図6D)。 Embolic piece 39 that is ablated is removed (FIG. 6D). 次に、カテ−テルの開口部40を反対方向に向ける(図6E)。 Next, catheter - directing the opening 40 of the ether in the opposite direction (Fig. 6E). そして図6B〜図6Dの操作を繰り返すことによって血管内の塞栓は除去される(図6F)。 The embolization of a blood vessel by repeating the operation of FIG 6B~ Figure 6D is removed (FIG. 6F).

【0005】 [0005]

【発明が解決しょうとする課題】しかしながら、かかるカッタ−を回転させながら前進させて塞栓を切除する方法は、血管内においてはカテ−テルを回転させなければならず、カテ−テルの先端は切除位置よりも前進させる必要があるので、血管内壁を傷つける欠点がある。 OBJECTS OF THE INVENTION It'll solve] However, such a cutter - a method of excising the emboli is advanced while rotating the can in the intravascular catheter - it must rotate the ether, catheter - tip of ether resected it is necessary to advance from the position, there is a drawback of damaging the inner wall of the blood vessel. 本発明の目的は血管内壁を傷つけないで、血管内壁に付着した塞栓を効率よく切除できるカテ−テルを提供することである。 An object of the present invention is not damage the inner wall of a blood vessel, catheter emboli adhered to the inner wall of a blood vessel can be efficiently cut - is to provide ether.

【0006】 [0006]

【課題を解決するための手段】本発明は側壁に開口部を有し、先端が有底の管状部材からなる細長いチュ−ブと;該チュ−ブ内に内挿され、先端側で該チュ−ブの開口部に対応する位置に切除部材、後端に回転駆動軸が連結された細長い回転部材と;前記チュ−ブの側壁から分岐し、真空源と接続し、塞栓を排出するためのポ−トと;前記ポ−トの開口部と反対側に設けられ、開口部付近のチュ−ブ外壁を血管内壁方向に移行させるための伸縮手段とからなる塞栓切除カテ−テルである。 The present invention SUMMARY OF] has an opening in the side wall, the elongate Ju tip comprises a tubular member having a bottom - Bed and; said Ju - interpolated in blanking, the Chu at the distal end - cutting member at a position corresponding to the opening of the probe, an elongate rotating member rotating drive shaft is connected to the rear end; the Ju - branched from the side wall of the probe, connected to a vacuum source, for discharging emboli port - DOO and; the port - the capital of the opening provided on the opposite side, Ju the vicinity of the opening - a ether - embolectomy catheter consisting of a blanking the outer wall and elastic means for shifting to the vessel inner wall direction. また、本発明は前記塞栓切除カテ−テルにおいて、切除部材が、 Further, the present invention is the embolectomy catheter - in ether, the ablation member,
円筒状または円柱状部材の外面に、上面が刃面からなるカッタ−がラセン状に設けられてなる塞栓切除カテ−テルである。 The outer surface of the cylindrical or columnar member, a cutter having an upper surface consisting of blade surface - is provided in a spiral embolectomy catheter - is ether. 更に、本発明は前記塞栓切除カテ−テルにおいて、伸縮手段がバル−ンまたはワイヤ−からなる塞栓切除カテ−テルである。 Furthermore, the present invention is the embolectomy catheter - in ether, elastic means Val - down or wires - consists embolectomy catheter - is ether. 更にまた、本発明は前記塞栓切除カテ−テルにおいて、切除部材の先端が有底の円筒形で、同様に円筒形の回転部材と連結しており、該回転部材の後方側には内径が拡大した塞栓収集室があり、該塞栓収集室は排出ポ−トと接続されており、回転部材の側壁には少なくとも1の小孔が設けられてなる塞栓切除カテ−テルである。 Furthermore, the present invention is the embolectomy catheter - in ether, cylindrical tip with a bottom of the ablation member, similarly has connecting the rotating cylindrical member, the inner diameter on the rear side of the rotary member is larger and there are emboli collection chamber has, embolic collection chamber discharge port - is connected to the bets, on the side wall of the rotary member embolectomy catheter thus provided at least one small hole - is ether.

【0007】 [0007]

【作用】本発明は塞栓切除カテ−テルを血管に挿入し、 DETAILED DESCRIPTION OF THE INVENTION The present invention embolectomy catheter - the ether was inserted into a blood vessel,
モ−タ−と接続された回転駆動軸の先端に設けられた切除部材を回転させることによって、血管内壁に付着した塞栓を切除するカテ−テルである。 Motor - motor - by rotating the cutting member provided at the tip of the connected rotary drive shaft, catheter to ablate the embolic adhered to the inner wall of a blood vessel - is ether. 切除された塞栓片はチュ−ブ内または/および切除ヘッドの中空部を通り、 Excised embolic pieces Ju - through the hollow portion of the probe in or / and ablation head,
真空源と接続する排出ポ−トから排出される。 It is discharged from the bets - discharge port for connecting a vacuum source.

【0008】 [0008]

【実施例】以下実施例にて本発明の一例を説明する。 EXAMPLES Below examples explaining an example of the present invention. 図1は本発明塞栓切除カテ−テルの説明図であり、図2は本発明塞栓切除カテ−テルの切除部材付近の拡大断面図であり、図3は本発明塞栓切除カテ−テルの他の実施例を示す一部切欠断面図であり、図4は切除部材の他の実施例を示す説明図であり、図5は従来の塞栓切除カテ− Figure 1 is the invention embolectomy catheter - is an illustration of ether, 2 invention embolectomy catheter - is an enlarged cross-sectional view of a cutting member near the ether, 3 invention embolectomy catheter - other Tel a partially cutaway sectional view showing an embodiment, FIG. 4 is an explanatory view showing another embodiment of the cutting member, Fig. 5 is a conventional embolectomy catheter -
テルの一部切欠断面図であり、図6は図5の塞栓切除カテ−テル使用方法の説明図である。 A partially cutaway sectional view of ether, 6 embolectomy catheter of FIG. 5 - is an illustration of ether usage. 図中、1は切除部材、2はチュ−ブ、3は回転部材、4は伸縮手段(ワイヤ−)、5は排出ポ−ト、6はワイヤ−操作治具、7はワイヤ−、8は切除部材の刃面、9は接続部品、10はモ−タ−、11はバッテリ−、12はスイッチ、13は塞栓収集室、14は開口部、15は先端ハウジング、16は有底部を示す。 In the figure, 1 is cutting member, 2 Ju - Bed, the rotary member 3, the elastic means (wire -) 4, the discharge port 5 - DOO, 6 wires - work tool, 7 wires -, 8 the rake face of the cutting member, the connection part 9, 10 motor - motor -, 11 battery -, 12 denotes a switch, 13 emboli collection chamber, 14 an opening, 15 the tip housing, 16 the bottom portion.

【0009】図1および図2に基づいて本発明の一例を説明する。 [0009] illustrating an example of the present invention with reference to FIGS. チュ−ブ2の先端は有底部16からなり、該有底部16に隣接した側壁に開口部14が設けられる。 Ju - tip of the probe 2 consists of a bottomed portion 16, the opening 14 is provided in the side wall adjacent to the bottomed portion 16. チュ− Ju -
ブ後端は螺合状コネクタ−などの接続部品9を介してモ−タ−10およびバッテリ−11を内蔵した駆動部本体と接続されている。 Bed trailing edge Nishigojo connectors - via the connecting parts 9 such as motor - is connected to the driving body with a built-in motor 10 and the battery -11. チュ−ブ2の途中、好ましくは後端付近の側壁から分岐して塞栓を排出するためのチュ−ブ(図示せず)と接続する排出ポ−ト5が設置され、真空源によって切除された塞栓が排出ポ−ト5および塞栓排出チュ−ブを経て除去される。 Ju - middle of the probe 2, preferably Ju for discharging emboli branches from the side wall near the rear end - discharge port connected to the blanking (not shown) - is installed bets 5, it was excised by a vacuum source embolism discharge port - DOO 5 and embolization discharge Ju - is removed via drive. 図1では、排出ポ−ト5とほぼ同じ位置に伸縮手段4であるワイヤ−を操作するワイヤ−操作治具6がチュ−ブ側壁から分岐して設けられているが、排出ポ−ト5と異なる位置にワイヤ−操作治具6の分岐チュ−ブが設置されてもよい。 In Figure 1, the discharge port - is provided to branch from the blanking sidewall, discharge port - - Wire manipulating - - wire is elastic means 4 at substantially the same position as the bets 5 work tool 6 Ju bets 5 wires different positions - work tool 6 branch Ju - Bed may be installed.

【0010】回転部材3である回転駆動軸はチュ−ブ2 [0010] Rotation member 3 a is rotating drive shaft Ju - Bed 2
内に内挿され、その先端は切除部材1が接続される。 Interpolated within, the tip cutting member 1 is connected. 後端は接続部品9を介して駆動部本体のモ−タ−10と接続され、モ−タ−10の回転と連動して回転部材3がチュ− Rear end of the driving body via a connection part 9 mode - is connected to the motor 10, motor - rotary member 3 in conjunction with rotation of the motor -10 Ju -
ブ2内で回転するようになっている。 It is adapted to rotate within the blanking 2. 切除部材1は回転部材3の先端に設けられ、その刃面8はチュ−ブ2の開口部14に設置されるとともに、その直径はチュ−ブ2の外径を超えない範囲内に形成される。 Cutting member 1 is provided at the distal end of the rotary member 3, the blade surface 8 Ju - while being placed in the opening 14 of the probe 2, the diameter of Ju - formed within a range that does not exceed the outside diameter of the probe 2 that. すなわち切除部材1の回転する刃がチュ−ブ2の外周の内側にあることによって、血管内壁を切除部材1の回転によって傷つけるのを防止することができる。 That the rotating blades of the cutting member 1 is Ju - by the inside of the outer periphery of the probe 2, it is possible to prevent the damage of the inner vessel wall by rotation of the cutting member 1. 図2は切除部材1が円筒状または円柱状部材の外面に、上面に刃面8を有するカッタ−がラセン状に設けられたものである。 Figure 2 is the outer surface of the cutting member 1 is cylindrical or columnar member, a cutter having a blade surface 8 on the upper surface - in which is provided in a spiral. 刃面8が円筒または円柱の外線となすラセン状の角度αは30〜60度が好ましい。 Spiral angle α is 30 to 60 degrees blade surface 8 is formed with the external line of the cylindrical or columnar preferred. また、刃面8の刃先は円筒状部材または円柱状部材の外線と直角に直立していてもよいが、刃面8の刃先が切除部材1の回転方向に曲がったものが血管内壁を傷つけなくて好ましい。 Further, the cutting edge of the blade surface 8 may be upright at a right angle and external cylindrical member or cylindrical member, but that the cutting edge of the blade surface 8 is bent in the direction of rotation of the cutting member 1 is not hurting the inner wall of a blood vessel preferable. 図4は切除部材1の他の実施例で回転部材3に外周線が刃面になっている少なくとも1の円盤17が取りつけられた塞栓切除カテ−テルである。 4 embolectomy catheter least one of the disc 17 is attached peripheral line is in the blade surface to the rotating member 3 in another embodiment of the cutting member 1 - is ether. 円盤17の外径はチュ−ブ2の外径より小さく、刃面がチュ−ブ2の外壁より内側になければ血管内壁を傷つける恐れがある。 The outer diameter of the disk 17 Ju - smaller than the outer diameter of the probe 2, the blade surface Ju - there is a risk of damaging the absence if the inner vessel wall to the inner side of the outer wall of the probe 2.

【0011】チュ−ブ2の開口部14の反対側には、開口部14付近のチュ−ブ外壁を血管内壁方向に移行させるための伸縮手段4が設けられる。 [0011] Ju - on the opposite side of the probe 2 of the opening 14, Ju the vicinity of the opening 14 - elastic means 4 for shifting the blanking outer wall to the vessel interior wall direction is provided. 図1は伸縮手段としてワイヤ−が使用され、チュ−ブ2の後端側に設けられたワイヤ−操作治具6によってワイヤ−4が伸縮する。 Figure 1 is a wire as elastic means - are used, Ju - wire provided on the rear end side of the probe 2 - Wire -4 to stretch the work tool 6. チュ−ブ2を血管内に挿入する際には、ワイヤ−4は縮みチュ−ブ2の外面に接しているが、チュ−ブ2の開口部14 Ju - the blanking 2 when inserted into a blood vessel, the wire -4 shrinkage Ju - but in contact with the outer surface of the probe 2, Ju - Bed second opening 14
が血管内の塞栓位置に設置され、ワイヤ−操作治具6によってワイヤ−4を伸ばすとチュ−ブ2の開口部14面が血管内壁側に移行し、チュ−ブ2の外壁は血管内壁と接するようになる。 There is installed emboli position within the blood vessel, the wire - when the work tool 6 extending the wire -4 Ju - opening 14 side of the probe 2 moves to the blood vessel inner wall, Ju - the outer wall of the probe 2 and the inner wall of a blood vessel contact as to become. 図1では伸縮手段4としてワイヤ−が使用されているが、伸縮手段としてバル−ンを使用することもできる。 Although is used, Bal as elastic means - - Wire as stretching means 4 in Figure 1 can also be used down. 図1において、収縮したバル−ンはチュ−ブ2の外面に接し、ワイヤ−操作治具6の代わりに空気圧入治具によって空気をバル−ン内に圧入する。 In Figure 1, it contracted Bal - down is Ju - Bed 2 of the outer surface in contact with the wire - is pressed into the down - the air Bal pneumatically enter jig instead of the work tool 6. バル−ンを膨張させることによって、チュ−ブ2の開口部14 Val - by expanding the emissions, Ju - Bed second opening 14
面は血管内壁方向に移行し、チュ−ブ2の外壁は血管内壁と接するようになる。 Surface transitions to the inner wall of a blood vessel direction, Ju - the outer wall of the probe 2 is in contact with the inner vessel wall. 開口部14内には塞栓が導入される。 The opening 14 emboli are introduced. スイッチ12を作動させることによって、回転部材3 By actuating the switch 12, the rotary member 3
が回転し、それによって切除部材1が回転し開口部14内の塞栓が切除される。 There is rotated, whereby the cutting member 1 is emboli in the rotary opening portion 14 is cut. 次にチュ−ブ2を回転させて、開口部14を反対面に向ける。 Then Ju - with a blanking 2 is rotated to direct the opening 14 on the other side. この操作はカテ−テル全体を回転させることによっても可能であるが、チュ−ブ2の先端に有底部16を含む先端ハウジング15を設け、開口部 This operation catheter - are possible by rotating the entire ether, Ju - provided tip housing 15 that includes a bottomed portion 16 at the tip of the probe 2, the openings
14の後方で接続部品を介してチュ−ブ2と接続してもよい。 Via the connecting part behind the 14 Ju - it may be connected to Bed 2. かかるカテ−テルではチュ−ブ2の開口部14の回転は先端ハウジング15だけを回転させるだけでよい。 Such catheter - at Tel Ju - rotation of the probe 2 of the opening 14 need only rotate only the tip housing 15.

【0012】図3は本発明塞栓切除カテ−テルの他の実施例を示す一部切欠断面図である。 [0012] Figure 3 is the invention embolectomy catheter - a partially cutaway sectional view showing another embodiment of the ether. 切除部材1は先端が有底の円筒形で、同様に円筒形の回転部材3と円筒箇所で連結している。 Cutting member 1 is connected with a cylindrical tip having a bottom, likewise with the rotary member 3 and the cylindrical portion of the cylindrical. チュ−ブ2の後端側には内径が拡大した塞栓収集室17があり、塞栓を排出する排出ポ−ト5と接続されている。 Ju - on the rear end side of the probe 2 may emboli collection chamber 17 whose inner diameter is enlarged, the discharge port to discharge the embolic - is connected to the bets 5. 回転部材3の側壁には少なくとも1の小孔が設けられていて、切除された塞栓はチュ−ブ2内だけでなく円筒形の回転部材3の中空部からも除去される。 On the side wall of the rotary member 3 have at least one small hole is provided, excised emboli Ju - also removed from the hollow portion of the rotation of the cylindrical well within Bed 2 member 3. 特に、小孔を切除部材1と塞栓収集室17のみに設けると、回転部材3内部の塞栓除去位置が固定されて好ましい。 In particular, the provision of small holes in only cutting member 1 and the embolic collection chamber 17, preferably rotating member 3 inside the emboli removal position is fixed. 回転部材3の円筒形の後端は塞栓収集室17までであって、それより後方の回転部材3は円柱形になっている。 The rear end of the cylindrical rotary member 3 be up embolic collection chamber 17, the rotary member 3 of the rear than is in the cylindrical shape. 切除部材1の側壁には少なくとも1の小孔18が設けられる。 At least one small hole 18 is provided in the side wall of the cutting member 1. 塞栓収集室17の回転部材3の側壁には少なくとも1の小孔19が設けられ、回転部材3の円筒内を通過した塞栓が小孔19から除去される。 At least one small hole 19 is provided in the side wall of the rotary member 3 of the embolic collection chamber 17, emboli passed through the cylindrical rotary member 3 is removed from the small holes 19. 塞栓収集室17では小孔 Small hole in the embolism collection chamber 17
19からの塞栓だけでなく、チュ−ブ2からの塞栓も排出ポ−ト5を経て排出される。 Not only emboli from 19, Ju - emboli from Bed 2 also discharge port - it is discharged through the door 5. チュ−ブ2はテフロン、ポリエチレン、ポリプロピレン、ポリイミド、ポリ塩化ビニル、ABS樹脂、ポリウレタンのようなプラスチック製が好ましく、回転部材3はステンレス鋼等の金属、ポリイミド、ポリウレタン、ポリ塩化ビニル、ポリオレフィン、ポリエステル、ポリアミド等のプラスチック、セラミック等からなるのが好ましい。 Ju - Bed 2 Teflon, polyethylene, polypropylene, polyimide, polyvinyl chloride, ABS resin, plastic is preferable, such as polyurethane, metal such as a rotary member 3 is of stainless steel, polyimide, polyurethane, polyvinyl chloride, polyolefins, polyesters , plastics such as polyamide, that consists of a ceramic or the like.

【0013】 [0013]

【発明の効果】本発明塞栓切除カテ−テルは、チュ−ブに内挿された回転部材の回転だけで切除部材が血管内壁に付着した塞栓を切除するので、チュ−ブは血管内の塞栓位置で固定されると塞栓切除の際に前後に動くことはない。 According to the present invention embolectomy catheter - ether is Ju - since cutting member in rotation only the interpolated rotational member blanking is excised emboli adhering to the inner wall of a blood vessel, Ju - Bed embolization in a blood vessel It does not move back and forth during the secured embolectomy in position. そのために、塞栓の切除はチュ−ブ内で行われ、 Therefore, removal of emboli Ju - place within Bed,
血管内壁を傷つけることは極めて少ない。 Damaging the inner wall of the blood vessel is very small.

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

【図1】本発明塞栓切除カテ−テルの説明図である。 [1] The present invention embolectomy catheter - is an illustration of ether.

【図2】本発明塞栓切除カテ−テルの切除部材付近の拡大断面図である。 [2] The present invention embolectomy catheter - is an enlarged cross-sectional view of a cutting member near the ether.

【図3】本発明塞栓切除カテ−テルの他の実施例を示す一部切欠断面図である。 [3] The present invention embolectomy catheter - a partially cutaway sectional view showing another embodiment of the ether.

【図4】切除部材の他の実施例を示す説明図である。 4 is an explanatory view showing another embodiment of the cutting member.

【図5】従来の塞栓切除カテ−テルの一部切欠断面図である。 [5] Conventional embolectomy catheter - a partially cutaway sectional view of ether.

【図6】図5の塞栓切除カテ−テル使用方法の説明図である。 [6] Figure 5 of the embolectomy catheter - is an explanatory view of Tel usage.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 切除部材 2 チュ−ブ 3 回転部材 4 伸縮手段(ワイヤ−) 5 排出ポ−ト 6 ワイヤ−操作治具 7 ワイヤ− 8 切除部材の刃面 9 接続部品 10 モ−タ− 11 バッテリ− 12 スイッチ 13 塞栓収集室 14 開口部 15 先端ハウジング 16 有底部 1 cutting member 2 Ju - Bed 3 rotating member 4 stretching means (wire -) 5 discharge port - DOO 6 wires - work tool 7 wires - 8 blade surface 9 connection piece 10 mode of the ablation member - data - 11 Battery - 12 Switch 13 embolic collection chamber 14 opening 15 distal the housing 16 having a bottom portion

Claims (4)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 側壁に開口部を有し、先端が有底の管状部材からなる細長いチュ−ブと;該チュ−ブ内に内挿され、先端側で該チュ−ブの開口部に対応する位置に切除部材、後端に回転駆動軸が連結された細長い回転部材と;前記チュ−ブの側壁から分岐し、真空源と接続し、 1. A has an opening in the side wall, the elongate Ju tip comprises a tubular member having a bottom - Bed and; said Ju - interpolated in blanking, the Chu at the distal end - corresponding to the opening of the probe cutting member at a position, an elongated rotary member rotating drive shaft is connected to the rear end; the Ju - branched from the side wall of the probe, connected to a vacuum source,
    塞栓を排出するためのポ−トと;前記ポ−トの開口部と反対側に設けられ、開口部付近のチュ−ブ外壁を血管内壁方向に移行させるための伸縮手段とからなる塞栓切除カテ−テル。 Ports for discharging the embolic - DOO and; the port - the capital of the opening provided on the opposite side, near the opening portion Ju - embolectomy catheter of the blanking outer wall consisting of a telescopic means for shifting to the vessel inner wall direction - Tel.
  2. 【請求項2】 切除部材が、円筒状または円柱状部材の外面に、上面が刃面からなるカッタ−がラセン状に設けられてなる請求項1記載の塞栓切除カテ−テル。 2. A cutting member is on the outer surface of the cylindrical or columnar member, a cutter having an upper surface consisting of blade surface - is provided in a spiral claim 1, wherein the embolectomy catheter - ether.
  3. 【請求項3】 伸縮手段がバル−ンまたはワイヤ−からなる請求項1または2記載の塞栓切除カテ−テル。 Wherein elastic means Val - down or wire - made of claims 1 or 2 wherein the embolectomy catheter - ether.
  4. 【請求項4】 切除部材の先端が有底の円筒形で、同様に円筒形の回転部材と連結しており、該回転部材の後方側には内径が拡大した塞栓収集室があり、該塞栓収集室は排出ポ−トと接続されており、回転部材の側壁には少なくとも1の小孔が設けられてなる請求項1〜3記載の塞栓切除カテ−テル。 In 4. Cylindrical tip of the bottomed ablation member, likewise are connected to the rotating cylindrical member, the rear side of the rotary member may emboli collection chamber inner diameter is enlarged, embolic collection chamber discharge port - is connected to the bets, on the side wall of the rotary member is formed by at least one small hole is provided according to claim 1 to 3, wherein the embolectomy catheter - ether.
JP3229456A 1991-08-15 1991-08-15 Embolus excision catheter Pending JPH0542162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3229456A JPH0542162A (en) 1991-08-15 1991-08-15 Embolus excision catheter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3229456A JPH0542162A (en) 1991-08-15 1991-08-15 Embolus excision catheter

Publications (1)

Publication Number Publication Date
JPH0542162A true JPH0542162A (en) 1993-02-23

Family

ID=16892489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3229456A Pending JPH0542162A (en) 1991-08-15 1991-08-15 Embolus excision catheter

Country Status (1)

Country Link
JP (1) JPH0542162A (en)

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