Muncy, Geissler, Olds & Lowe, P.C.
Biodegradable cross-linked polymer, vascular stent and manufacturing methods therefor
The present invention relates to the field of medical instruments. Specifically, a biodegradable cross-linked polymer and a manufacturing method therefor are provided. The cross-linked polymer is obtained by bonding crosslinkable reactive groups to terminal groups of a biodegradable prepolymer having two or more arms and further subjecting the prepolymer to thermal polymerization and/or light irradiation. The cross-linked polymer has an elastic modulus of 10-4,500 MPa, and a degradation rate of 3-36 months. A biodegradable vascular stent and a preparation method therefor are also provided. The vascular stent is formed by laser cutting of polymeric tubing having a three-dimensional cross-linked network structure. The vascular stent has ample mechanical strength, a high elastic modulus at body temperature, and a regulatable degradation rate.
Shanghai Micoport Medical (Group) Co., Ltd.
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Juan Hongyan Wei Yahong Jing Qiyi
Hou Jiang Wang Kang Wang Luo