Objective To evaluate biological safety of poly lactic-co-glycolic acid (PLGA) /pyrite composite active bone repair scaffold. Methods According to biological evaluation criterion of medical devices, we selected hemolytic test, cytotoxicity test, genotoxicity test, tests for irritation and delayed-type hypersensitivity, general toxicity test and implantation test, to evaluate biological safety of the new materials. Results PLGA /pyrite composite active bone repair scaffold had good blood compatibility, without general toxicity, cell toxicity, skin irritation and sensitization. The tissue reaction was normal after planting to the bone and the bone repairing was in good condition. Conclusions PLGA/ pyrite composite active bone repair scaffold was one kind of bone repair material with good biocompatibility and could be safely applied to clinical use.
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