Controlled release portable pump

Details Controlled release portable pump Controlled release portable pump

1994-05-20

1996-02-20

Hirsch, Paul J.

Surgery

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

Treating material introduced into or removed from body...

604153, A61M 5155

Patent

active

054925347

ABSTRACT:
A portable pump, useful for medical and non-medical uses, has two pouches (3, 4) in pressure transmitting relationship, the first (4) containing an infusate (5) and the second (3), a driving medium (2). The driving medium is pressurized in any of a variety of ways, including activation of osmotic pump, electrochemical reaction (19), release of pressurized fluid or gas (21, 23) or mechanical means (24). The rate of infusion is controlled by a rate controller (18). The infusate pouch is separately manufactured and can be stored apart of the rest of the system. Pulses of pumped fluid can also be delivered according to one aspect of the invention (18, 40).

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patent: 4886514 (1989-12-01), Maget
patent: 4997083 (1991-03-01), Loretti
patent: 5062834 (1991-11-01), Gross

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