Absorbable luminal stent and preparation method thereof

Abstract

The invention provides an absorbable luminal stent and a preparation method thereof. The absorbable luminal stent comprises a stent body, a plurality of through holes prepared on the stent body and bioresorbable polymer materials full filled in the through holes. When the stent is transplanted into a blood vessel, by compounding of the materials in the through holes and the material of the stent body, damage caused in the pressure holding and opening process of the stent is reduced, duration time of a radial supporting force of the stent is prolonged and mechanical performance of the transplanted stent is ensured.

Description

technical field

[0001] The invention relates to the field of medical devices, in particular to an absorbable lumen stent and a preparation method thereof. Background technique

[0002] Since German doctor Andrea Gronzgo first proposed the idea of ​​stents in 1976, and since coronary stents were widely used clinically in the 1990s, the third generation of absorbable drug-eluting stents has appeared. However, at present, a certain proportion of patients with drug-eluting stents (DES) based on stainless steel and cobalt-chromium alloys still have subacute thrombosis and restenosis after stent implantation, and these metal stents are permanently retained. internally. Thus, bioabsorbable scaffolds (BVS) began to become the focus and focus of attention.

[0003] Absorbable stents have multiple possible benefits in theory: after the stent is absorbed, the normal contractility of blood vessels can be restored, preventing the occurrence of vascular restenosis; the vascular dynamics...

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