Ambulatory infusion pump

Details Ambulatory infusion pump Ambulatory infusion pump

1988-06-27

1990-02-13

Pellegrino, Stephen C.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604131, 604246, 604249, 128DIG12, A61M 500

Patent

active

049003054

ABSTRACT:
A pulsed liquid injection device for injection of predetermined dosage volumes of medication at predetermined intervals of time over an extended period is described. A relatively large supply of medication is maintained in a bag under pressure, and metered portions thereof are released at time intervals by an electronically controlled metering device. The metering device includes a simple valve arrangement containing three flexible resilient elements arranged and controlled in such a way as to provide shut off of medication supply in the event of a malfunction, either electrical or mechanical.

REFERENCES:
patent: 4303376 (1981-12-01), Siekmann
patent: 4411651 (1983-10-01), Schulman
patent: 4596558 (1986-06-01), Smith et al.

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