Degradable vascular stent and manufacturing method thereof

Abstract

The invention belongs to the field of medical instrument, and specifically provides a degradable vascular stent which is prepared via laser cutting of high molecular tubes, wherein the high molecular tubes possess three-dimensional crosslinked network structures. The invention also provides a method used for preparing the degradable vascular stent. The degradable vascular stent is high enough in mechanical strength, and is high in elasticity modulus at body temperature, so that the degradable vascular stent can be prepared with a compact size, is capable of providing enough radial support force against vascular walls, is capable of avoiding retraction in blood vessels as far as possible, and is capable of controlling degradation rate of the degradable vascular stent according to recovering time of vascular diseases.

Description

technical field

[0001] The invention relates to the field of medical instruments. More specifically, the present invention relates to a degradable vascular stent and a manufacturing method thereof. Background technique

[0002] Currently, the stents used in the treatment of postoperative vascular restenosis usually include metal stents, drug-coated metal stents and biodegradable stents. Although metal stent-related technologies have made continuous progress and solved the elastic recoil of blood vessels after PTCA, they still cannot solve the problems of intimal hyperplasia caused by intimal injury and metal foreign bodies. Drug-coated metal stents can inhibit intimal hyperplasia to a certain extent and reduce the occurrence rate of restenosis, but stimulation by metal foreign bodies is unavoidable, requiring long-term administration of antiplatelet drugs. In addition, metal stents prevent beneficial late vessel remodeling phenomena.

[0003] The occurrence of vascular re...

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