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    • 4. 发明授权
    • Method and apparatus for delivering first agent followed by second agent
    • 用于递送第一代理,后跟第二代理的方法和装置
    • US5840074A
    • 1998-11-24
    • US852248
    • 1992-06-02
    • Atul Devdatt AyerJames B. EckenhoffJeremy C. WrightAnthony L. Kuczynski
    • Atul Devdatt AyerJames B. EckenhoffJeremy C. WrightAnthony L. Kuczynski
    • A61K9/00A61K9/22
    • A61K9/0068A61K9/0004
    • The invention provides a dispensing device (10) comprising a loading dose (32) (first agent delivery device) for short-term and continuous delivery of agent, retained together with a long-term dispensing device (12) (second agent delivery device) capable of long-term and continuous delivery of agent. The combination of first and second agent delivery device provides a device in which a substantially constant dose of beneficial agent is delivered to the environment of use over time. A rapid delivery of beneficial agent is followed by continuous and prolonged delivery of agent. In a preferred embodiment the device includes (A) a loading dose chamber (30) and retaining device (16) retaining a loading dose (32) (short-term delivery device) for rapid and continuous delivery of agent to the environment of use; and (B) a long-term dispensing device (12) (long-term delivery device) comprising a semipermeable wall (14) which surrounds and defines an internal lumen (20), a driving source (22) (expansion device) in the lumen for expanding and occupying an increased volume of the lumen, a beneficial agent (24) in the lumen that provides a dispensable formulation to the environment of use, and an exit (28) in the device for delivery of the beneficial agent to the environment of use over time. A densifier (26) and/or a moveable barrier device (34) may also be included in the lumen of the long-term dispensing device.
    • PCT No.PCT / US90 / 07598 Sec。 371日期:1992年6月2日 102(e)日期1992年6月2日PCT 1990年12月21日PCT PCT。 出版物WO91 / 10423 日期1991年7月10日本发明提供一种分配装置(10),其包括与长期分配装置(12)保持在一起的用于短期和连续输送药剂的负荷剂量(32)(第一药剂输送装置) 第二代理递送设备),能够长期和连续地递送代理。 第一和第二药剂递送装置的组合提供了一种装置,其中基本上恒定剂量的有益药剂随时间递送到使用环境中。 随后快速递送有益药剂,其次是持续和长期的药剂输送。 在优选实施例中,装置包括(A)负载剂量室(30)和保持装置(16),保持装置(16)保持负载剂量(32)(短期输送装置),用于将药剂快速和连续地递送到使用环境中; 和(B)包括围绕并限定内腔(20)的半透壁(14)的长期分配装置(12)(长期输送装置),其中 用于扩张和占据管腔体积增加的内腔,在内腔中的有益剂(24),其向使用环境提供可分配的配方,以及用于将有益剂递送至环境的装置中的出口(28) 随着时间的推移使用。 致密器(26)和/或可移动屏障装置(34)也可以包括在长期分配装置的内腔中。