Details for Patent: 6,156,331

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Summary for Patent: 6,156,331

Title:	Sustained delivery of an active agent using an implantable system
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.
Inventor(s):	Peery; John R. (Stanford, CA), Dionne; Keith E. (Menlo Park, CA), Eckenhoff, deceased; James B. (late of Los Altos, CA), Landrau; Felix A. (Punta Gorda, FL), Lautenbach; Scott D. (San Mateo, CA), Magruder; Judy A (Mountain View, CA), Wright; Jeremy C. (Los Altos, CA)
Assignee:	ALZA Corporation (Mountain View, CA)
Application Number:	09/310,149
Patent Claim Types: see list of patent claims	Delivery; Device;

Drugs Protected by US Patent 6,156,331

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