Catching device

Abstract

The invention relates to a medical apparatus, in particular to a thrombus extraction device for mechanical elimination of thrombus blocked in intracranial vessels of patients when acute ischemic stroke attacks the patients so as to recover blood flow. The catching device is characterized in that a catching system is of a bagged structure with the remote end sealed. The bagged structure is composed of a framework structure and a membrane structure. The framework structure is made of metal or high polymer materials, the membrane structure is made of high polymer materials, and a cellular structure is formed on the membrane structure. The bagged structure is retracted into a conveying system under external acting force, and the conveying system conveys the catching system to the target blood vessel position.

Description

technical field [0001] The present invention relates to a medical device, and more specifically, the present invention relates to a device for recovering blood by mechanically eliminating the thrombus blocked in the patient's intracranial blood vessel when the patient suffers from acute ischemic stroke. [0002] Thrombectomy device for flow purposes. Background technique [0003] In my country, acute stroke is the third leading cause of death and the first leading cause of disability. According to statistics, there are about 2 million new cases of stroke in the country every year, about 1.5 million people die of stroke every year, and about 6.5 million stroke survivors. The annual direct cost of treating stroke in the country exceeds 20 billion yuan, of which Ischemic stroke (ischemicstroke) accounts for about 85% of all patients. In the United States, there are 250,000 to 500,000 new stroke patients every year, and more than 150,000 of them die. According to the statistic...

AI Technical Summary

Problems solved by technology

[0021] In order to solve the above-mentioned technical problems, the present invention provides an improved thrombus capture device, which solves the problem of repeated thrombus removal in the prior art and the easy fall-off of blood vessel wall plaque and broken thrombus, which causes the distal blood vessel to relapse. The problem of embolism has the following characteristics: easy operation, accurate and reliable thrombus removal, and all thrombi can be removed in one operation; the semi-permeable polymer membrane of the thrombus removal system can ensure the passage of blood while loading the thrombus; the surface of the thrombus removal system The lubricating layer can effectively reduce the damage of the device to blood vessels; during the withdrawal process of the device, there is no risk of thrombus falling off

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