Surgery – Controlled release therapeutic device or system – Osmotic or diffusion pumped device or system
Patent
1997-11-14
2000-10-17
Polutta, Mark O.
Surgery
Controlled release therapeutic device or system
Osmotic or diffusion pumped device or system
424422, A61K 922
Patent
active
061324205
ABSTRACT:
The present invention relates to an osmotically driven agent delivery system for delivering a beneficial agent. The osmotic delivery system includes an osmotic agent which operates by imbibing fluid from an outside environment, causing the release of a beneficial agent. The osmotic delivery system includes a liquid or gel additive surrounding the osmotic agent for enhancing start-up and lubricating the osmotic agent. The liquid or gel additive is an incompressible lubricating fluid which fills any air gaps between the osmotic agent and the walls of a chamber and substantially reduces start-up delays.
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Dionne Keith E.
Lautenbach Scott D.
ALZA Corporation
Cheney Kelly M
Clarke Pauline Ann
Polutta Mark O.
Stone Steve
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