Thrombectomy stent

Abstract

The invention relates to a thrombectomy stent. The thrombectomy stent comprises a hollow tubular stent main body, a convex structure is arranged on the stent main body, and the thrombectomy stent has a compression state of radial contraction and an expansion state of radial expansion; and when the thrombus extraction stent is in an expanded state, the convex structure protrudes and extends from the stent main body to the outer side of the stent main body. According to the thrombus extraction stent provided by the invention, by arranging the convex structure, thrombus can be intercepted from the outer side of the thrombus extraction stent; therefore, even if a complicated thrombus which cannot enter the inner cavity of the stent main body is encountered, the thrombus can be intercepted by utilizing the convex structure, so that when the thrombus extraction stent is withdrawn, the situation that the thrombus falls off is reduced. Therefore, the thrombus can be effectively prevented from escaping into the bifurcated blood vessel when encountering the bifurcated blood vessel.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a thrombectomy bracket. Background technique [0002] Mechanical thrombectomy has become the most important means of treating patients with acute ischemic stroke. Mechanical thrombectomy has the following advantages in the treatment of acute ischemic stroke: 1. Thrombolytic drugs are not required, thereby reducing the risk of intracranial hemorrhage; 2. The treatment time window may be extended, with the standard time reaching 8 hours, and some patients have good compensation The patient can reach 2 days; 3. Directly remove thrombus and accelerate blood vessel recanalization. [0003] From the current research, thrombus can be roughly divided into the following types: 1. White thrombus (whitethrombus), mainly composed of many coral-like platelet trabeculae, has many neutrophils adhered to the surface to form white blood cells. The edge layer is speculated to be attr...

AI Technical Summary

Problems solved by technology

However, in practical applications, it is often difficult for thrombi with complex structures (mainly including white thrombi and transparent thrombi with longer, larger or harder structures) to enter the lumen of the thrombus retrieval stent, but at least partially located in the Between the outer side of the main body of the stent and the inner wall of the blood vessel

When the thrombectomy stent is withdrawn, this type of thrombus is easy to fall off from the thrombus retrieval stent, resulting in unsatisfactory thrombus removal effect

Images