Thrombus removal device

A technology of embolus and thrombus, which is applied in the field of medical equipment, can solve the problems of plaque on the vessel wall and broken thrombus that are easy to fall off, re-embolization of distal vessels, high flexibility, etc., achieve good size recovery performance, prevent secondary embolism, Effect of Large Radial Support Force

Pending Publication Date: 2019-06-28
XINXIN MEDICAL TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thrombus retriever can effectively improve the thrombus capture efficiency, and solve the problem in the prior art that plaques on the vessel wall and broken thrombus pieces are easy to

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0104] For the convenience of description, the following description uses the terms "proximal end" and "distal end", wherein "proximal end" refers to the end close to the operator, and distal end refers to the end far away from the operator.

[0105] figure 1 It is a thrombus retriever device, including a self-expanding stent 1, a delivery guide wire 2 and an introduction sheath 3, wherein the delivery guide wire and the stent are connected together by welding, bonding, crimping, etc. through a developing ring or a developing spring, figure 1 The display shows the state after the stent is released and deployed; the assembled thrombectomy product is that the stent and the delivery guide wire are crimped and held in the introduction sheath.

[0106] figure 2 and image 3 It is a stent grid, and the area of ​​the sparse grid 12 in the middle section of the stent 14 is significantly larger than the area of ​​the proximal 15 grid and the far-end 13 grid, and the area of ​​the ...

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Abstract

The invention provides a thrombus removal device. The thrombus removal device comprises a cylindrical self-expandable stent (1) with openings in the two ends, a conveying guide wire (2) and a leading-in sheathing canal (3), wherein the wall (11) of the self-expandable stent is composed of hollow-out meshes (12), and the self-expandable stent (1) is divided into a near end (15), a middle section (14) and a far end (13) starting from the position where the self-expandable stent (1) is connected with the conveying guide wire (2) in the length direction. The area of a single mesh in the meshes ofthe middle section (14) is larger than the area of a single mesh in the meshed of the far end (13) and the near end (15), a smooth edge connecting rod (161) is arranged at the edge of the near end ofthe self-expandable stent (1), and the wall thickness of the self-expandable stent (1) is 0.01-0.04 mm larger than the width of the connecting rods, at the edges of the non-near ends, for forming themeshes (12).

Description

technical field [0001] The invention relates to medical equipment, in particular, the invention relates to a thrombus retriever. Background technique [0002] Stroke is one of the main causes of human death and disability, and acute ischemic stroke (AIS) accounts for about 80% of all strokes. Studies have shown that there are about 7.5 million stroke patients in China, and 2.5 million new strokes occur every year, of which about 1.6 million people die, which seriously endangers human life. The key to the treatment of AIS is to open the blocked blood vessels as soon as possible and save the ischemic penumbra. Intravenous injection of recombinant tissue plasminogen activator (recombinant tissue plasminogen activator, rt-PA) thrombolysis has been proven to be an effective method for the treatment of AIS, the earlier the treatment time, the more benefits. However, it is limited by the strict time window and the requirements of indications and contraindications. The proportion ...

Claims

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Application Information

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IPC IPC(8): A61B17/22
Inventor 黄正宗张雷倪华丽何福桂
Owner XINXIN MEDICAL TECH SHANGHAI CO LTD
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