A thrombus removal device, method and application thereof

Abstract

The invention relates to a thrombus extraction device, which comprises a thrombus extraction stent system, a pushing system, a developing ring and an import sheathing canal, and is characterized in that the vertex of a near-end cone of the thrombus extraction stent system is fixedly connected with the far end of the pushing system, and the developing ring visible under X rays is arranged at the joint of the near-end cone of the thrombus extraction support system and the far end of the pushing system to serve as a pipe hoop; and the connected cerebrovascular thrombus extraction device is collected into the import sheathing canal. The thrombus extraction device has the advantages that thrombus falling caused by improper thrombus positions in retraction is avoided, and thrombus extraction efficiency is improved; no opening seam exists, and vascular injury is reduced; the thrombus embedding capability of the stent is enhanced; the release length can be randomly selected according to procedure requirements, so that the operation flexibility is improved; higher reliability is achieved, the operation risk is reduced, and meanwhile certain torsion damage resistance is achieved.

Description

technical field [0001] The invention relates to a thrombus removal device, in particular to a minimally invasive interventional intracranial thrombus removal device, application and usage method thereof, belonging to the technical field of medical devices. Background technique [0002] Acute ischemic stroke (AIS) is a common and frequently-occurring disease worldwide, characterized by high morbidity, high prevalence, and high disability. The incidence rate in China ranks first in the world, and the number of patients is about 2 million, accounting for about 1 / 3 of the world. Among them, the proportion of large blood vessel blockage is about 30%, about 700,000 people, and the incidence of stroke is increasing year by year. The death rate caused by it has risen to be the first in our country. [0003] The treatment of AIS is mainly based on thrombolytic therapy and interventional device therapy, in order to achieve the therapeutic purpose of revascularization. Thrombolytic t...

AI Technical Summary

Problems solved by technology

The first three types are gradually eliminated due to the low rate of successful recanalization and high surgical risk after thrombectomy

At present, the negative pressure suction type and the stent type are mainly used. The effect of negative pressure suction thrombus is better when removing small emboli, but when the emboli are large, the distal emboli can easily escape; the current stent type The method of thrombectomy is simple to operate, but the thrombus often falls off during the withdrawal process, and multiple thrombus removal is required, otherwise the blood vessel cannot be recovered and recanalized

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