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    • 4. 发明授权
    • Polymer formulation for prevention of surgical adhesions
    • 用于预防手术粘连的聚合物制剂
    • US5962006A
    • 1999-10-05
    • US877391
    • 1997-06-17
    • Jeffrey L. SouthardRichard L. Dunn
    • Jeffrey L. SouthardRichard L. Dunn
    • A61L31/06A61K9/08A61K47/22A61K47/34
    • A61L31/06
    • The invention is directed to a polymer formulation in which a pharmaceutically acceptable, biocompatible, biodegradable and/or bioerodible, water-coagulable thermoplastic polymer or copolymer which is substantially insoluble in an aqueous medium is dissolved in .epsilon.-caprolactone, a pharmaceutically-acceptable, moderately water-soluble organic solvent. When brought in contact with an aqueous environment, such as body or tissue fluids, the .epsilon.-caprolactone slowly dissipates into the aqueous fluid. As the .epsilon.-caprolactone dissipates, the water-insoluble thermoplastic polymer coagulates to form a flexible matrix. Preferably, the thermoplastic polymer is a copolymer of caprolactone or methylene carbonate and lactide or glycolide monomers. More preferably, the thermoplastic polymer is poly(DL-lactide-co-caprolactone). The polymer formulation may also contain a biologically active agent and/or a rate modifying agents to control the rate of release of the biologically active agent. The invention is also directed to a method of making the pliable matrix and the pliable matrix itself.
    • 本发明涉及聚合物制剂,其中基本上不溶于水性介质的药学上可接受的,生物相容的,可生物降解的和/或可生物腐蚀的可水凝的热塑性聚合物或共聚物溶解在ε-己内酯中,其药学上可接受的,适度的 水溶性有机溶剂。 当与诸如身体或组织液体的水性环境接触时,ε-己内酯缓慢地散入到含水流体中。 当ε-己内酯消散时,水不溶性热塑性聚合物凝结形成柔性基质。 优选地,热塑性聚合物是己内酯或碳酸亚甲酯与丙交酯或乙交酯单体的共聚物。 更优选地,热塑性聚合物是聚(DL-丙交酯 - 共 - 己内酯)。 聚合物制剂还可含有生物活性剂和/或速率调节剂以控制生物活性剂的释放速率。 本发明还涉及一种制造柔韧性基质和柔韧性基体本身的方法。