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    • 9. 发明申请
    • Method and Multilayered Device for Controlled Topical Delivery of Therapeutic Agents to the Skin
    • 用于皮肤控制局部递送治疗剂的方法和多层装置
    • US20080131493A1
    • 2008-06-05
    • US11965904
    • 2007-12-28
    • Haitham Matloub
    • Haitham Matloub
    • A61K9/70A61K47/32
    • A61M35/00A61K8/0208A61K9/703A61L26/0066A61L26/0085A61L26/0095A61L2430/34A61Q19/00
    • A multilayered composite sheet for delivering one or more therapeutic agents to the skin is disclosed. The composite sheet comprises a flexible porous polymer with open cells of a sufficient size for holding a therapeutic agent, an encapsulating agent for encapsulating the flexible porous polymer and therapeutic agent, and an enrobing agent for enrobing the encapsulated flexible porous polymer and therapeutic agent. Additional layers of the flexible porous polymer, therapeutic agent and other materials are added to the first layer which is in contact with the skin. The first layer has particular particle sizes for the flexible porous polymer, open cell size, and therapeutic agent allowing for relatively quick delivery of the therapeutic agent to the skin. Each successive layer placed on top of the first layer has incrementally larger particle sizes of the flexible porous polymer and therapeutic agent providing successively longer delivery times than the first layer.
    • 公开了一种用于将一种或多种治疗剂递送至皮肤的多层复合片材。 复合片材包括具有足够尺寸的开放细胞的柔性多孔聚合物,用于保持治疗剂,用于包封柔性多孔聚合物和治疗剂的包封剂,以及用于包封柔性多孔聚合物和治疗剂的包衣剂。 将柔性多孔聚合物,治疗剂和其它材料的附加层加入到与皮肤接触的第一层中。 第一层具有用于柔性多孔聚合物,开孔尺寸和治疗剂的特定颗粒尺寸,允许将治疗剂相对快速地递送至皮肤。 放置在第一层顶部的每个连续层具有递增更大的柔性多孔聚合物和治疗剂的粒度,其提供比第一层相继更长的递送时间。