Programmable valve pump

Details Programmable valve pump Programmable valve pump

A - Human Necessities

61

M

137/110, 128/80

A61M 31/00 (2006.01)

Patent

CA 1307178

PROGRAMMABLE VALVE PUMP Abstract An implantable valve accumulator pump comprises a drug reservoir (18) maintained at constant pressure vapor. The medication metering assembly comprises a fixed volume accumulator (30) positioned between a pair of valves (26,28). 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 (36). In order to mimimize dead volume and insure complete discharge, the accumulator employs a titanium diaphragm (90) seated in one position by a recessed stop and in the discharge position by a spacer plate (98) having a grooved pattern. The unit is externally programmed.

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