Implantable drug infusion reservoir having fluid impelling resilient foam member
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United States of America Patent
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-
Jan 5, 1993
Grant Date -
N/A
app pub date -
Jul 8, 1991
filing date -
Jul 8, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An implantable infusion reservoir having a resilient foam member in a rigid housing to urge fluid to an implantation site. The foam member compresses upon charging and then expands to maintain a predetermined pressure characteristic within the fluid. The foam replaces the previously used two-phase propellent and eliminates the need for a hermetic metal bellows. The foam may be either closed celled or open celled, with or without a barrier skin. The device can be conformal to any desired shape and employ various metering techniques to deliver accurate quantities of fluid.
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Family
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Cited Art Landscape
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