Vein vascular stent

Abstract

The invention discloses a vein vascular stent, which comprises a stent body, the stent body is of a mesh tubular structure formed by weaving metal wires, the stent body comprises a first stent sectionand a second stent section which are connected in the axial direction, and the mesh density of the first stent section is different from that of the second stent section. According to the intravenousstent provided by the invention, the treatment effect can be improved for bare sections involving inferior vena cava and iliac femoral vein stenosis, and the supporting strength and extrusion resistance can be improved for a dense net structure with relatively high mesh density at a compression part; a sparse net structure with small mesh density is arranged at a bent part, so that the flexibility and the adherence performance can be improved; the variable-diameter structure can conform to the blood vessel form aiming at the blood vessel anatomical form, and the product is suitable for various blood vessel diameters.

Description

[0001] This application is a divisional application of an invention patent application with an application date of May 10, 2019, a Chinese application number of 2019103903563, and an invention title of "a vascular stent". technical field [0002] The invention relates to the field of vascular interventional medicine, in particular to a venous vascular stent. Background technique [0003] Venous disease is currently a relatively common disease in vascular surgical diseases, especially iliac vein compression syndrome, which refers to a syndrome in which compression of the iliac artery leads to intraluminal adhesion, stenosis or occlusion, resulting in various clinical symptoms. The incidence of iliac vein compression syndrome is 20%-40%. [0004] In recent years, interventional therapy has been used as a routine procedure for the treatment of venous compression. At present, the stents used to treat venous stenosis include cutting stents and braided stents. Cutting stents can s...

AI Technical Summary

Problems solved by technology

[0004] In recent years, interventional therapy has been used as a routine procedure for the treatment of venous compression. At present, the stents used to treat venous stenosis include cutting stents and braided stents. Cutting stents can support the stenotic occluded segment of the vessel, reduce the elastic recoil of the vessel, and maintain the The blood flow in the cavity is smooth, but there are also some shortcomings, such as insufficient flexibility, easy to break, etc.

Images