Self-screening thrombectomy stent with strong capture force

Abstract

The invention discloses a self-screening thrombectomy stent with strong capture force, and relates to the field of medical instruments. The self-screening thrombectomy stent comprises a far-end gathering screen, an upper half stent main body, a stent middle section and a lower half stent main body, wherein the upper half stent main body, the stent middle section and the lower half stent main bodyare each of a net-cylinder-shaped structure; the diameter of the cross section of the stent middle section is smaller than the diameters of the cross sections of the upper half stent main body and thelower half stent main body; one end of the stent middle section is connected with the upper half stent main body; the other end of the stent middle section is connected with the lower half stent mainbody; the far-end gathering screen is arranged at the far end of a thrombectomy stent body and is connected with the upper half stent main body; and the far-end gathering screen comprises a pluralityof gathering petals, and the gathering petals are gathered from the periphery to the inside. The self-screening thrombectomy stent is reasonable in design and high in practicability, the risk that thrombus is lost in a process of being pulled out from the body is eliminated, and the thrombus capture capacity is improved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a self-screening thrombectomy bracket with strong capturing force. Background technique [0002] Stroke is currently one of the common diseases in the world, and its characteristics are: high morbidity / high prevalence / high disability. The annual incidence of cerebrovascular disease in my country's urban areas is 219 / 100,000, and that in rural areas is 185 / 100,000, and it is still increasing year by year. From 1998 to 2008, the prevalence of cerebrovascular disease increased from 5.9% to 9.7%. Among the surviving patients with cerebrovascular disease, about three-quarters are disabled to varying degrees. It has been reported that 80% of stroke patients have varying degrees of limb dysfunction, and 43.7% of them cannot take care of themselves. Intravenous rt-PA thrombolysis is currently the only effective treatment for acute cerebral infarction proven by evidence-based medicine. H...

AI Technical Summary

Problems solved by technology

The thrombectomy process is time-consuming, and the recanalization rate of blood vessels is low. If it takes a long time, it will lead to too long ischemic time and may cause irreversible damage to the brain.

And if the thrombectomy stent itself is improperly designed, it is easy to cause irreversible damage to the blood vessel, leading to other complications such as blood vessel rupture; all of the above are problems that must be faced when the thrombectomy stent system is used to treat stroke caused by cerebral thrombosis

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