A kind of vascular stent, its preparation method and application

Abstract

The invention relates to a vascular stent, a method for preparing the same and application of the vascular stent. The vascular stent comprises a positioning zone and a supporting zone. The positioning zone comprises a plurality of first repeat monomers, the supporting zone comprises at least two supporting units and at least one connecting unit, each supporting unit comprises a plurality of second repeat monomers, the quantity of the first repeat monomers is different from that of the second repeat monomers, and the second repeat monomers in each of the supporting units positioned at the front end and the rear end of the supporting zone are connected with the second supporting monomers in the other corresponding adjacent supporting unit by a first connecting unit in a one-to-one correspondence manner to form closed-loop structures. The vascular stent, the method and the application have the advantages that the vascular stent is particularly applicable to iliac veins, and good iliac vein supporting effects can be realized by the vascular stent; venous walls rarely can be injured, and stent secondary thrombosis after the vascular stent is implanted can be effectively prevented; the vascular stent can be effectively positioned in the iliac veins and is easy and convenient to operate, and the release accuracy can be improved.

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

Images