Osmotic device with dual thermodynamic activity

Surgery – Controlled release therapeutic device or system – Osmotic or diffusion pumped device or system

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Details

604890, 604891, 604285, A61M 700, A61M 3100

Patent

active

046120084

ABSTRACT:
An osmotic system is disclosed comprising a wall formed in at least a part of a semipermeable material that surrounds a compartment. The compartment contains a first osmotic composition comprising a beneficial agent, and a second and different osmotic composition. A passageway in the wall connects the first composition with the exterior of the system.

REFERENCES:
patent: 4186184 (1980-01-01), Zaffaroni
patent: 4210139 (1980-06-01), Higuchi
patent: 4298003 (1981-11-01), Theeuwes et al.
patent: 4320759 (1982-03-01), Theeuwes
patent: 4350271 (1982-09-01), Eckenhoff

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