Multi-net pocket thrombectomy bracket and multi-net thrombectomy system

Abstract

The invention discloses a multi-net-bag type thrombus-retrieving bracket, which includes a traction guide wire and a net bag unit, and the number of the net bag units from the proximal end to the distal end is at least two; The connecting ribs are connected; and each net bag unit and its corresponding connecting ribs are cut on the pipe with a laser cutting machine to obtain an integrated multi-net bag type thrombus removal bracket during manufacture. The multi-net thrombectomy system includes the above-mentioned multi-net thrombectomy bracket. The thrombectomy bracket and system of the present invention have simple body structure, laser integrated molding, and simple preparation process; multiple mesh pocket units capture thrombus to the greatest extent, and are equipped with mesh holes of different sizes and different forms of structures: large mesh penetration , converging and fixing thrombus, small mesh cuts and captures thrombus fragments; the distal covering prevents broken thrombus from escaping during the withdrawal process; the imaging structure is inside, which will not damage the vessel wall, and has good adherence, which improves the stent's ability to capture thrombus and Velocity of thrombus fragments.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a multi-net pocket thrombectomy bracket, a multi-net pocket thrombectomy bracket and a multi-net thrombectomy system for removing thrombus in intracranial large blood vessels in patients with acute ischemic stroke . Background technique [0002] Thrombus formation occurs when blood clots in the human blood pool together in the vascular system. Thrombosis can result in restricted blood supply to areas downstream of the vasculature. When these blood clots pool in the neurovascular system of the human brain, a stroke can result. According to China's national stroke screening data, stroke has become the number one cause of death and disability among adults in my country. Among them, Acute Ischemic Stroke (AIS) is the most common type. After the failure of intravenous thrombolysis, AIS patients usually adopt mechanical thrombectomy. [0003] At present, the mechanical thro...

AI Technical Summary

Problems solved by technology

[0006] However, the distal ends of these thrombus stents are all open structures, they cannot completely capture the thrombus, and these thrombus retrieval stents may promote clot fragmentation; during stent withdrawal, the collected thrombus may slip out of the stent, Risk of further stroke by allowing a blood clot to dislodge and accumulate in another site

In addition, friction between the distal open stent and vessel wall may promote endothelial stripping

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