Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Tablets – lozenges – or pills
Patent
1993-01-21
1994-11-29
Phelan, D. Gabrielle
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Tablets, lozenges, or pills
424438, 424468, A61K 924
Patent
active
053688635
ABSTRACT:
The present invention is directed to an improvement in a delivery device, the device comprising a wall that surrounds an internal lumen or compartment which contains a beneficial agent or medicament formulation, an expandable driving member and an optional density member, and having an exit means, and wherein the improvement comprises prehydrating the delivery device as a means for advancing the beginning or startup of agent delivery from the delivery system to give earlier release of beneficial agent to the environment of use. An embodiment of the invention concerns a fluid reservoir in contact with the expandable driving member to provide prehydration of the device.
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Burkoth Terry L.
Carr John P.
Eckenhoff James B.
Wright Jeremy C.
ALZA Corporation
Ito Richard T.
Mandell Edward L.
Phelan D. Gabrielle
Stone Steven F.
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