Liquid delivery device particularly useful for delivering drugs
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United States of America Patent
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Sep 7, 1993
Issued Date -
N/A
app pub date -
Dec 16, 1991
filing date -
Oct 19, 1990
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A delivery device for delivering a liquid containing a drug includes a first diaphragm within a housing defining a first contractible-chamber on one side of the diaphragm for holding a supply of the liquid to be delivered, and a second contractible chamber on the opposite side of the diaphragm including an electrolytic cell capable of generating a gas according to the electrical current passed through the cell electrolyte. The device further includes a second diaphragm, a control valve, and a spring, for compensating the rate of delivery of the liquid for variations in ambient pressure and temperature.
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