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    • 14. 发明申请
    • TIME-SPECIFIC CONTROLLED RELEASE DOSAGE FORMULATIONS AND METHOD OF PREPARING SAME
    • 时间特异性控制释放剂量制剂及其制备方法
    • WO1998032426A1
    • 1998-07-30
    • PCT/IB1997001646
    • 1997-12-16
    • POLIN INDUSTRIA CHIMICA S.P.A.BUSETTI, CesareCRIMELLA, Tiziano
    • POLIN INDUSTRIA CHIMICA S.P.A.
    • A61K09/36
    • A61K9/5078A61K9/2866A61K9/2886A61K9/4891
    • The present invention provides a method of achieving the time-specific delivery of a pharmaceutically active agent to a patient in need of the therapeutic effects of the pharmaceutically active agent. The method includes administering a pharmaceutical formulation comprising (a) a core including the pharmaceutically active agent to be delivered, and (b) a swellable polymeric coating layer substantially surrounding the core. The swellable polymeric coating layer delays the release of the pharmaceutically active agent from the core for a predetermined period of time dependent upon the thickness of the swellable polymeric coating layer. The swellable polymeric coating layer surrounding the core is provided by a new method which includes alternately (I) wetting the core with a binder solution, and (ii) coating the core with powdered polymeric particles a sufficient number of times to produce a time-specific dosage formulation having the desired thickness of swellable polymeric coating layer.
    • 本发明提供了一种实现药物活性剂对需要药物活性剂的治疗作用的患者的时间特异性递送的方法。 该方法包括施用药物制剂,其包含(a)包含待递送的药物活性剂的核心和(b)基本上围绕核心的可溶胀聚合物涂层。 可膨胀聚合物涂层根据可溶胀聚合物涂层的厚度延迟药物活性剂从芯中释放预定时间段。 通过新的方法提供围绕芯的可溶胀聚合物涂层,其包括交替地(I)用粘合剂溶液润湿芯,和(ii)用粉末状聚合物颗粒将核心涂覆足够多的次数以产生时间特异性 剂量制剂具有所需的可溶胀聚合物涂层的厚度。