Thrombectomy stent and thrombus catcher

Abstract

The present application discloses a thrombectomy bracket and a thrombus catcher, wherein the thrombectomy bracket is a self-expandable tubular grid structure, and the thrombectomy bracket includes a plurality of connected first grid units, and the first grid The unit includes a plurality of side bars, and the cross-sectional area of ​​the side bars gradually increases along the direction from the middle of the side bars to the two ends of the side bars. By setting the side bars of the first mesh unit along the direction from the middle to both ends, the cross-sectional area of ​​the side bars gradually increases, so that the stiffness of the side bars gradually increases along the direction from the middle to both ends, reducing the end of the side bars And the strain amount near the end area makes the stress and strain distribution of the thrombectomy bracket even when deformed, avoids the stress and strain concentration in the local area, and avoids the deformation of the thrombectomy bracket to affect the size, and improves the resilience of the thrombectomy bracket.

Description

technical field [0001] The application belongs to the technical field of medical devices, and in particular relates to a thrombus retrieval bracket and a thrombus catcher. Background technique [0002] Acute cerebral thrombosis, mainly caused by cerebrovascular thrombosis, is the most common fatal and disabling disease of the central nervous system. Cerebral thrombosis has the characteristics of high morbidity, disability, mortality and recurrence. According to a statistical data in Beijing, the incidence of acute cerebral hemorrhage in Beijing has shown a significant downward trend in recent years, while the incidence of acute cerebral thrombosis has increased significantly, that is, the proportion of acute cerebral hemorrhage to stroke has increased from 42 % decreased to 16%, while the proportion of acute cerebral thrombosis increased from 55.8% to 81.6%, which shows that cerebral thrombosis has become the number one brain disease. [0003] With the development of inter...

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Problems solved by technology

[0004] This application provides a thrombectomy stent and a thrombus catcher to solve the technical problems of the thrombectomy stent being subjected to large stress and strain for a long time, which will cause its deformation to affect its size and decrease its resilience.

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