A Self-screening Thrombectomy Stent with Strong Capturing Power

Abstract

The invention discloses a self-screening thrombectomy bracket with strong capturing force, which relates to the field of medical devices and includes a distal gathering screen, an upper half bracket main body, a bracket middle section, and a lower half bracket main body; the upper half bracket main body, the Both the middle section of the bracket and the main body of the lower half bracket are in the shape of a mesh tube; the cross-sectional diameter of the middle section of the bracket is smaller than the cross-sectional diameters of the main body of the upper half bracket and the main body of the lower half bracket; one end of the middle section of the bracket is connected to the The upper half of the bracket is connected to the main body; the other end of the middle section of the bracket is connected to the lower half of the bracket; The distal gathering sieve includes a plurality of gathering petals, and the gathering petals return to the inside from the surrounding. The invention has reasonable design and strong practicability, eliminates the risk of thrombus being lost in the process of being pulled out of the body, and increases the ability to catch the thrombus.

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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