34 results about "Plastic repair" patented technology

The invention relates to the field of biomedical materials, in particular to bone cement as well as a preparation method and application thereof. Comprising the steps that a component A, a component B and a component C react to form a citrate-based prepolymer, the component A is citric acid polyester containing at least two reactive ester-based functional groups on a terminal group or a side chain, the component B is non-citric acid polyester containing at least two reactive functional groups on a terminal group or a side chain, and the functional groups are the same or different; the functional groups are selected from at least one of ester groups, hydroxyl groups, amino groups, sulfydryl groups, epoxy groups, carboxyl groups, acid anhydrides and organic substituent groups; the component C is polyol; the reaction comprises an ester exchange reaction and / or a condensation polymerization reaction and a substitution reaction; the injectable citrate bone cement is prepared by blending the citrate-based prepolymer, isocyanate and an additive, has the advantages of low curing temperature, degradability, excellent mechanical properties and osteogenesis promotion, and is suitable for orthopedics, brain surgery and cranio-maxillofacial plastic repair.