Novel vascular stent

Abstract

The invention relates to a novel vascular stent and belongs to the technical field of stents. The novel vascular stent is composed of a cutting stent body and a weaving stent body. The vascular stent comprises supporting ribs and connection ribs, and the supporting rids are connected through the connection ribs. The supporting ribs are medical stainless steel cutting stents and of weave-shaped supporting ring structures, the cross sections of the supporting ribs are of variable cross section structures, and the cross section areas of the turning positions of the supporting ribs are the largest. The connection ribs are the self-expansion weaving stent body composed of memory alloy and woven by metal wires. The cross section areas of the supporting ribs are larger than the cross section areas of the metal wires of the connection ribs, and the supporting ribs are the main supporting portions of the stent. The connection ribs composed of the self-expansion weaving stent body are woven by thin metal wires, the flexibility is larger than that of the cutting stent body, the flexibility of the overall stent is improved, and meanwhile certain supporting performance is provided. To prevent the situation that the stent becomes narrower, the surface of the stent can be coated with a medicine coating, and slots can be formed in the surfaces of the supporting ribs for containing medicine, such as, sirolimus, taxol and rheum emodin.

Description

technical field [0001] The present invention relates to the field of vascular interventional medicine, specifically, the present invention relates to a novel vascular stent, which is composed of a cutting stent and a braided stent, the supporting ribs are composed of a cutting stent, and the connecting ribs are composed of a braided stent made of metal wires. It belongs to the technical field of supports. Background technique [0002] At present, the incidence of cardiovascular and cerebrovascular diseases is getting higher and higher, and it has become one of the three major diseases that endanger human life, health and safety. Vascular stenosis is a high-incidence disease that causes serious consequences such as heart failure and stroke. [0003] For the treatment of cardiovascular and cerebrovascular stenosis, the existing treatment methods mainly include medicine, operation and stent formation. Among them, drugs can reduce the relative risk of ischemic stroke by 13%, b...

AI Technical Summary

Problems solved by technology

Most of these stents are balloon-expandable vascular stents, with large cross-sections of support ribs and connecting ribs and good support performance, but the flexibility of the stent is poor

Braided stents are braided by thin metal wires, most of which are self-expanding stents. Due to the smaller cross-section of the wires, the flexibility of the stent is higher, but compared with the cut stent, the support strength of the braided stent is weaker

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