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    • 7. 发明授权
    • Delayed onset transdermal delivery device
    • 延迟发作透皮递送装置
    • US5284660A
    • 1994-02-08
    • US933423
    • 1992-08-21
    • Eun Soo LeeFelix TheeuwesPatrick S. L. WongSu Il YumRobert M. GaleAlejandro Zaffaroni
    • Eun Soo LeeFelix TheeuwesPatrick S. L. WongSu Il YumRobert M. GaleAlejandro Zaffaroni
    • A61K9/00A61K9/22A61K9/70A61F13/00
    • A61K9/7084A61K9/7069A61K9/7092
    • A diffusional drug delivery device is described which can provide for delayed onset of therapeutic effect and for delivery of the therapeutic agent in predetermined temporal patterns at optimum rates. Delay means are provided between the agent reservoir and the surface through which the agent is released by diffusion to delay the release of agent at a therapeutic rate for predetermined times after application. Suitable means include a delay membrane disposed between the releasing surface and the agent reservoir, which membrane is preferably free of undissolved agent and/or is initially impermeable to the agent and thereafter becomes permeable. One or more agent chambers defined by one or more of such membranes may be provided, whereby agents are released in predetermined temporal patterns at optimal release rates. Delayed permeability enables programmed washout periods to be obtained from the sequential and concurrent application of devices for the administration of drugs, such as nitrates, to which patients may develop a tolerance on continuous administration over extended time periods.
    • 描述了扩散药物递送装置,其可以提供治疗效果的延迟开始和以最佳速率以预定时间模式递送治疗剂。 在药剂储存器和通过扩散释放药剂的表面之间提供延迟装置,以在施用后以治疗速率延迟药剂释放预定时间。 合适的方法包括设置在释放表面和药剂储存器之间的延迟膜,该膜优选不含未溶解的试剂和/或最初不能渗透到试剂中,然后变得可渗透。 可以提供由一种或多种这样的膜限定的一个或多个试剂室,由此以最佳释放速率以预定的时间模式释放试剂。 延迟渗透性使得能够从连续和同时使用用于施用诸如硝酸盐的药物的装置获得程序性洗脱期,患者可以在延长的时间段内持续施用耐受性。