Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Implant or insert
Patent
1997-01-30
1998-03-17
Phelan, D. Gabrielle
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Implant or insert
424423, 424424, 424473, 6048911, A61F 1300, A61F 200, A61F 922
Patent
active
057283966
ABSTRACT:
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.
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Dionne Keith E.
Eckenhoff James B.
Landrau Felix A.
Lautenbach Scott D.
Magruder Judy A.
ALZA Corporation
Clarke Pauline A.
Dillahunty Mary Ann
Phelan D. Gabrielle
Stone Steven F.
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