John R. Peery,Keith E. Dionne,James B. Eckenhoff,Felix A. Landrau,Scott D. Lautenbach,Judy A. Magruder,Jeremy C. Wright
申请号：
US13116970
公开号：
US08298562B2
申请日:
2011.05.26
申请国别(地区):
US
年份:
2012
代理人:
摘要：
The invention is directed to a device for delivering an active agent formulation for a predetermined administration period. An impermeable reservoir is divided into a water-swellable agent chamber and an active agent formulation chamber. Fluid from the environment is imbibed through a semipermeable plug into the water-swellable agent chamber and the active agent formulation is released through a back-diffusion regulating outlet. Delivery periods of up to 2 years are achieved.
