Thrombus extraction stent, thrombus extraction device and thrombus extraction system

Abstract

The invention relates to a thrombus extraction stent, a thrombus extraction device and a thrombus extraction system. The thrombus extraction stent comprises rigid units and flexible units which are linearly arranged and alternately connected. The rigid units and the flexible units are each of a tubular structure which can be compressed and expanded in the radial direction. And under the same radial force, the flexible units are easier to bend and deform compared with the rigid units. According to the stent, the rigid units and the flexible units of the tubular structure are alternately connected to form the integral stent, wherein the rigid units have the supporting effect, thrombus can be cut and captured when the stent is naturally unfolded, a blood flow channel is rapidly established, and pre-dredging of the blood flow channel is achieved. The flexible units are used for radial bending, so that the whole thrombus extraction stent can be bent at the position of the flexible units, the flexibility of the thrombus extraction stent is improved, the capacity of the thrombus extraction stent for penetrating through a bent circuitous blood vessel after thrombus is captured and when thethrombus extraction stent is pulled back can be improved, it is guaranteed that the thrombus extraction stent is always attached to the wall of the blood vessel, and thrombus disengagement is avoided. Finally, the thrombus capturing capability is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a thrombectomy bracket, a thrombectomy device and a thrombus retrieval system. Background technique [0002] Thrombosis is the abnormal aggregation of platelets and other formed components in the blood to form blood clots. Blood clots may occur on the inner wall of the heart or on the wall of blood vessels, causing blood vessel blockage or embolism, and secondary serious physical injury. Thrombosis spreads throughout the entire cardiovascular system, affecting tissues and organs throughout the body, not limited to myocardial infarction, deep vein thrombosis, or cerebrovascular thrombosis. Thrombosis can occur in blood vessels anywhere in the body. The incidence of venous thrombosis is higher than that of arterial thrombosis, the ratio of the two can reach 4:1, venous thrombosis accounts for 40% to 60% of the thrombus mechanism, the incidence of obstructive coronary thromb...

AI Technical Summary

Problems solved by technology

The common defect of these mainstream products is that there is residue after thrombectomy and the thrombus falls off during withdrawal, which leads to the unsatisfactory overall thrombus capture performance of the thrombus removal device.

The internal carotid artery, middle cerebral artery, vertebral artery, and basilar artery are the most common sites of nerve thrombus, and the state of acute thrombus is mostly greasy and slippery.

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