Thrombectomy stent with barbs for enhancing capture force

Abstract

The invention discloses a thrombectomy stent with barbs for enhancing capture force. The thrombectomy stent comprises a mesh cage formed by an elastic wire mesh in a curly shape; the elastic wire meshcomprises a plurality of elastic wires; the elastic wires intersect with one another to form a plurality of grid units; the formed grid units include a plurality of 8-shaped grid units; an inward circuitous part is arranged in the middle of each of two sides of each 8-shaped grid unit in the width direction; the inward circuitous part of at least one 8-shaped grid unit extends to form an extension wire; the two extension wires are intersected to form a capture unit; and the tail end of the capture unit can be provided with a developing point / developing block by welding. The invention aims toprovide the thrombectomy stent with the barbs for enhancing the capture force, which is used for more reasonably enhancing the capture effect on thrombus, and can enhance the supporting strength for preventing the mesh cage from prematurely collapsing and deforming due to bending force.

Description

technical field [0001] The invention belongs to the field of interventional treatment instruments, and in particular relates to a thrombectomy bracket with barbs for enhanced grasping force. Background technique [0002] Cerebral stroke is an ischemic stroke caused by thrombus in the blood vessels of the brain. The blood flow of the local blood supply arteries of the brain tissue is suddenly reduced or stopped, resulting in ischemia and hypoxia of the brain tissue in the blood supply area of ​​the blood vessels, resulting in necrosis and softening of the brain tissue, and Accompanied by clinical symptoms and signs of corresponding parts, such as hemiplegia, aphasia and other symptoms of neurological deficit. [0003] At present, the clinical treatment of ischemic stroke mainly adopts drug thrombolysis and mechanical thrombectomy. [0004] The disadvantages of drug thrombolysis are: it is only suitable for small thrombus, and the treatment effect on large-volume thromboembol...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of drug thrombolysis are: it is only suitable for small thrombus, and the treatment effect on large-volume thromboembolism is not ideal. Only about 3-5% of patients are suitable for drug thrombolysis; the effectiveness of thrombolysis is less than one-third one

[0010] However, none of the above-mentioned existing patents can reflect a better and more reasonable thrombus capture effect and leak-proof effect

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