Osmotic device with hydrogel driving member
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United States of America Patent
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-
May 4, 1982
Grant Date -
N/A
app pub date -
Nov 25, 1980
filing date -
Nov 25, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An osmotic device is disclosed comprising a semipermeable wall surrounding a compartment housing an agent that is insoluble to very soluble in aqueous and biological fluids, and a layer of a fluid swellable, hydrogel. A passageway in the wall connects the agent with the exterior of the device.
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