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    • 1. 发明授权
    • Segmented device for simultaneous delivery of multiple beneficial agents
    • 用于同时传送多个有益试剂的分段装置
    • US5443461A
    • 1995-08-22
    • US114800
    • 1993-08-31
    • Linda E. AtkinsonJohn T. DunnRobert M. GaleDavid L. Rivera
    • Linda E. AtkinsonJohn T. DunnRobert M. GaleDavid L. Rivera
    • A61K9/22A61K9/48
    • A61K9/4808
    • Diffusional delivery devices are constructed in two or more compartments, each containing a separate drug or other beneficial agent, and each arranged to permit diffusion of the agent out of the device through an individually-characterized agent-permeable wall segment. The diffusion rates of the various agents relative to one another are set and controlled by the parameters of the individual wall segments, such as the surface area of the wall segment, the average thickness of the wall segment, and the permeability of the wall segment for the particular agent. The permeability may be varied by variations in the chemical composition of the wall segment. Using these parameters rather than blending the agents at calculated ratios in a single formulation for diffusion through a single wall permits a wider range of, and greater flexibility in, variation between the diffusion rates of the different agents. This is of value when the simultaneous administration of agents at a specified ratio is desired.
    • 扩散递送装置构造在两个或更多个隔室中,每个隔室含有单独的药物或其它有益剂,并且每个隔室布置成允许药剂通过单独表征的药剂可渗透壁段从装置中扩散出设备。 各种试剂相对于彼此的扩散速率由单个壁段的参数设定和控制,例如壁段的表面积,壁段的平均厚度和壁段的渗透率 特定的代理。 渗透率可以通过壁段的化学组成的变化而变化。 使用这些参数而不是以单一制剂计算的比例混合试剂以通过单个壁扩散,允许不同试剂的扩散速率之间的变化范围更宽且更大的灵活性。 当需要以特定比例同时施用药剂时,这是有价值的。