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    • 1. 发明授权
    • Controlled release dispenser comprising beneficial agent
    • 控制释放分配器包括有益剂
    • US5273752A
    • 1993-12-28
    • US763393
    • 1991-09-19
    • Atul D. AyerTerry L. BurkothAnthony L. KuczynskiJoseph C. Deters
    • Atul D. AyerTerry L. BurkothAnthony L. KuczynskiJoseph C. Deters
    • A61K9/00A23K1/18
    • A61K9/0068A61K31/70A61K9/0004
    • A dispenser is disclosed for delivering a beneficial agent in a hydrophilic carrier formulation to an animal in a rate-controlled manner. The dispenser comprises (1) a semipermeable housing defining an internal space, (2) at least one composition comprising a beneficial agent and a pharmaceutically acceptable hydrophilic carrier in the space, (3) an expandable hydrophilic driving member in the space, (4) a density member in the space, and (5) one exit passageway or a multiplicity of exit passageways in the housing for delivering the beneficial agent from the dispenser, the diameter of each exit passageway being of a size to maximize release of the beneficial agent by osmotic pumping and to minimize release of the beneficial agent by diffusion or erosion to substantially avoid mechanical agitation-dependent release of the beneficial agent.
    • 公开了一种分配器,用于以速率控制的方式将亲水载体制剂中的有益剂递送给动物。 所述分配器包括(1)限定内部空间的半透明壳体,(2)至少一种组合物,其包含所述空间中的有益剂和药学上可接受的亲水载体,(3)所述空间中的可膨胀亲水性驱动构件,(4) 空间中的密度构件,以及(5)壳体中的一个出口通道或多个出口通道,用于从分配器输送有益物质,每个出口通道的直径具有使得有益剂释放最大化的大小 渗透泵送并且通过扩散或侵蚀来最小化有益剂的释放,以基本上避免有益剂的机械搅动依赖性释放。