A kind of vascular stent, its preparation method and application

Abstract

The invention relates to an intravascular stent and a preparation method and application thereof. The intravascular stent comprises a positioning section, a central supporting section and a tail-end supporting section. The positioning section comprises a plurality of first repeat single parts, the central supporting section comprises at least two central supporting units and at least one first connection unit, and each central supporting unit comprises a plurality of second repeat single parts. The tail-end supporting section comprises at least two tail-end supporting units and at least one second connection unit, and each tail-end supporting unit comprises a plurality of third repeat single parts. The first repeat single parts are not as many as the second repeat single parts, a supporting force of the central supporting section is larger than that of the tail-end supporting section, and a plane formed by the front ends of the first repeat single parts are intersected with the axis of the intravascular stent. The intravascular stent is effective in supporting and positioning, less in harms to vein walls and capable of effectively avoiding formation of thrombi.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a vascular stent, its preparation method and application. Background technique [0002] Venous diseases are the most common vascular surgical diseases, especially deep vein thrombosis of lower extremities and varicose veins of lower extremities are more common. A large part of the causes of these two diseases is caused by the compression of the iliac vein. Iliac vein compression syndrome (iliac vein compression syndrome, IVCS) refers to the compression of the iliac vein by the iliac artery, resulting in intraluminal adhesion, stenosis or occlusion, resulting in a series of clinical symptoms, also known as May–Thurner, Cockett syndrome. The incidence of iliac vein compression syndrome is 20% to 34%. [0003] In terms of treatment, surgery has been used to solve venous compression. Due to the need for abdominal surgery, the trauma is relatively large, and patients have ...

AI Technical Summary

Problems solved by technology

However, there are still some problems with these iliac vein stents: they are not suitable for restoring the blood flow state of the iliac vein and increasing the blood flow, and it is easy to cause the formation of thrombus. Therefore, it is necessary to carry out research and development and application research of new iliac vein stents

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