Biodegradable implants based on photo-cross-linked aliphatic polycarbonates for long-acting contraception

•Biodegradable contraceptive implants prepared by UV irradiation molding method.•Photo-cross-linked aliphatic polycarbonates as a matrix material.•Carrier has degradation characteristic of surface erosion mechanism.•Implants with low cytotoxicity and good biocompatibility.•Formulation has stable release kinetics and good long-acting contraceptive effects.