Integrated thrombectomy stent

Abstract

The invention discloses an integrated thrombectomy stent. The integrated thrombectomy stent comprises filter nets, a thrombectomy stent body, net-end constraint points and a pushing rod. According tothe integrated thrombectomy stent, a thrombus capturing device special for protecting far-end and near-end blood vessels is arranged; closed dense net structures at two ends of the thrombus capturingdevice not only can trap a large main thrombus but also can capture stripped small thrombi and other foreign matter possibly causing embolism, thereby preventing small thrombus clots from flowing intoother near-end or far-end blood vessels; a near-end thrombus filter net of the integrated thrombectomy device is fixed to the pushing rod, while a far-end thrombus filter net can move in the axial direction, and can flexibly regulate and control stretching and retracting of the stent; an integrated structure of the thrombus filter nets and the net-shaped thrombectomy stent is used, and thus, while the wrapping performance of the thrombectomy device on thrombi is improved, the risk that a thrombectomy stent is separated from thrombus filter nets due to the insufficient closing force of the thrombus filter nets in a split structure is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an integrated thrombectomy bracket. Background technique [0002] Stroke is the leading cause of death and disability among adults in my country, and it has the characteristics of high incidence, high disability, high mortality and high recurrence rate. Statistics from the "China Stroke Prevention Report 2018" show that the incidence and prevalence of stroke in my country continue to increase. In 2016, the incidence of ischemic stroke in my country was 276.75 / 100,000, and the prevalence was 1762.77 / 100,000. [0003] At present, the clinical treatment of ischemic stroke mainly adopts drug thrombolysis and mechanical thrombectomy. The disadvantage of drug thrombolysis is that its time window is only 3-4.5 hours, and it is only suitable for small thrombus. It cannot achieve ideal therapeutic effect for larger thrombus, and only about 3% to 5% of patients Suitable for throm...

AI Technical Summary

Problems solved by technology

The disadvantage of drug thrombolysis is that its time window is only 3-4.5 hours, and it is only suitable for small thrombus. It cannot achieve ideal therapeutic effect for larger thrombus, and only about 3% to 5% of patients suitable for thrombolytic therapy

However, this kind of distal protection scheme only protects the distal downstream vessels, but cannot protect the aorta and its upstream branch vessels

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