| 摘要 |
Prodn. of a drug-contg. bone cement and of bone substitutes or drug-releasing implants made from the cement comprises mixing a solid component (A) with a liq. component (B) after adding a drug soln. (C) to the solid or liq. component, opt. shaping the resulting liq. or semisolid cement; and curing the cement. (A) comprises a finely divided acrylate and/or methacrylate ester polymer and opt. additives such as polymerisation catalysts, X-ray contrast agents, fillers and colourants, and is present in the cement in an amt. of 50-75 wt.%. (B) comprises acrylate and/or methacrylate ester monomers and opt. additives such as polymerisation accelerators and stabilisers, and is present in the cement in an amt. of 25-50 wt.%. (C) comprises a drug in an organic solvent which is present in an amt. of up to 50 wt.% based on component (B). Components (B) and (C) can be sterilised by filtration before being mixed with component (A), which can be sterilised separately by conventional methods that might degrade the drug, esp. gamma -irradiation or ethylene oxide treatment. |
