Thrombus aspiration catheter and application thereof

A technique for suctioning a catheter and a thrombus, which is applied to a thrombus suction catheter and its application field, can solve the problems of high preparation cost, cumbersome use method, complicated structure of a thrombus removal device, etc., and achieves a simple overall structure and efficient and convenient operation for thrombus extraction. Effect

Inactive Publication Date: 2015-07-08
黄经春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the structures of the above-mentioned three types of thrombus removal devices are relatively complicated, and the preparation cost is high and the use method is loaded down with trivial details.

Method used

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  • Thrombus aspiration catheter and application thereof
  • Thrombus aspiration catheter and application thereof
  • Thrombus aspiration catheter and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A catheter for aspiration of thrombus, comprising a suction catheter body 12, a guide wire 16 arranged through a guide wire seat 15 at the front of the suction catheter body 12, and a penetratingly arranged at the rear of the suction catheter body 12. Luer connector 11 ; a thrombus stripping frame 14 is arranged between the suction catheter body 12 and the wire guide seat 15 .

[0041] The thrombus stripping rack 14 is a cutting piece 41 whose middle section protrudes along the radial direction of the suction catheter body 12 .

[0042] At least one edge of the cutting sheet is an acute edge.

[0043] Such as Figure 4 As shown, the outer edge of the cross-section C of the cutting sheet includes two angles α and β. The α and β may be one of the acute angles, or both of the α and β may be acute angles to ensure that the cross-section C The outside corners are sharp enough. When the thrombus stripping frame is operated to rotate in the blood vessel, the thrombus stripp...

Embodiment 2

[0045] Such as figure 1 shown.

[0046]The thrombus aspiration catheter as described in Embodiment 1 is different in that the thrombus stripping rack 14 includes more than two arc-shaped cutting pieces, and one end of the arc-shaped cutting slices, that is, one end of the thrombus stripping rack 14, passes through The guide wire base 15 is connected with the guide wire 16 ; the other end of the arc-shaped cutting piece, that is, the other end of the thrombus stripping rack 14 , is connected with the suction catheter body 12 .

[0047] The arc-shaped cutting piece includes an outer surface and an inner surface, and the width of the inner surface is smaller than the width of the outer surface.

[0048] The radius of curvature of the outer arc of the thrombus stripping rack is less than or equal to 2mm.

[0049] An intercepting membrane is arranged between the guide wire seat and the thrombus stripping frame, and the intercepting membrane is a permeable membrane.

Embodiment 3

[0051] Such as figure 2 , 3 , 4, and 5.

[0052] A catheter for aspiration of thrombus as described in Example 2, the difference is that a drain hole 19 and an intercepting membrane 42 are sequentially arranged between the guide wire base 15 and the thrombus stripping frame 14, and the intercepting The membrane is a non-permeable membrane.

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Abstract

A thrombus aspiration catheter comprises an aspiration catheter body, a guide wire and a Luer taper, wherein the guide wire is arranged at the front portion of the aspiration catheter body through a guide wire base, and the Luer taper is arranged at the rear portion of the aspiration catheter body in a through mode. The thrombus aspiration catheter is characterized in that a thrombus stripping frame is arranged between the aspiration catheter body and the guide wire base; the thrombus stripping frame comprises cutting slices, and the middle section of each cutting slice protrudes in the radial direction of the aspiration catheter body; at least one edge of each cutting slice is an acute-angle edge. The outer edge of the section C of each cutting slice involves the angle alpha and the angle beta, one of the angle alpha and the angle beta can be an acute angle, alternatively, both the angle alpha and the angle beta can be acute angles, and it is guaranteed that the outer corner of the section C is sharp enough. When operated to rotate in a blood vessel, the thrombus stripping frame can thoroughly clear away thrombi.

Description

technical field [0001] The invention relates to a thrombus suction catheter and its application, belonging to the technical field of medical devices. Background technique [0002] Acute myocardial infarction (AMI) is a common cardiovascular and cerebrovascular emergency in clinical practice. At present, the most effective treatment is emergency percutaneous coronary intervention (PCI) for infarction-related arteries for effective revascularization. During the emergency PCI operation, there are still some patients with "slow blood flow" or "no-reflow" phenomenon, one of the main reasons is that fresh thrombus and / or plaque fall off during conventional balloon dilatation and stent implantation The resulting distal microvascular embolism seriously affects the immediate treatment effect and long-term prognosis of patients with acute ST-segment elevation myocardial infarction (STEMI). Therefore, the application of auxiliary devices that may reduce thromboembolism in emergency P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22
CPCA61B17/00234A61B17/22A61B2017/00243A61B2017/22038A61B2017/22079
Inventor 黄经春郝树彬郭世文
Owner 黄经春
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