MODIFIED POLYLACTIC ACID BIODEGRADABLE STENT AND PREPARATION METHOD THEREOF

摘要

Provided is a biodegradable material, formed by blending a linear polylactic acid or polylactic acid copolymer having high molecular weight with a biodegradable crosslinking agent to conduct crosslinked polymerization. The biodegradable crosslinking agent is formed through the connection between a crosslinkable photoactive group and the hydroxy or amino terminal of a linear or stelliform polylactic acid or polylactic acid copolymer prepolymer. A stent prepared from the biodegradable material has sufficient mechanical strength and structural stability, and improved processing property.