Programmable valve pump
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United States of America Patent
Stats
-
Jun 13, 1989
Grant Date -
N/A
app pub date -
Dec 15, 1987
filing date -
Dec 15, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An implantable valve accumulator pump for the delivery of medication is disclosed. The implantable pump comprises a drug reservoir maintained a constant pressure vapor. The medication metering assembly comprises a fixed volume accumulator positioned between a pair of valves. The valves alternately open and close to admit medication from the reservoir into the accumulator and to dispense a precise volume spike to an outlet catheter. In order to minimize dead volume and insure complete discharge, the accumulator employs a titanium diaphragm seated in one position by a recessed stop and in the discharge position by a spacer plate having a groove pattern. The unit is externally programmed.
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Family
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Cited Art Landscape
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