A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 5/00 (2006.01) A61M 5/145 (2006.01)
Patent
CA 2057817
ABSTRACT OSMOTIC PUMPS An osmotic pump comprises a housing (2) within which is a delivery chamber (5) separated from an osmotic salt chamber (7) by impermeable moveable pressure responsive means such as a piston (6) or a flexible membrane. The osmotic salt chamber (7) is separated from a source of osmotic fluid, e.g. an osmotic fluid chamber (12), by a semipermeable membrane (96,36), optionally mounted in a piston (9,23). A fluid barrier isolates the osmotic salt chamber (7) from the source of osmotic fluid for storage of the pump, and may be inactivated when the pump is to be used. The fluid barrier may be a foil sheet (10), inactivatable by rupture, or a piston and a fluid bypass arrangement (21,23). Activation of the osmotic pump may be effected in some embodiments by loading the discharge chamber (5) with the agent to be delivered and in other embodiments by movement of a plunger (16), under manual control or, if the plunger is pre-biassed, by release of a locking means (18) which holds it in position.
Goudreau Gage Dubuc
Societe de Conseils de Recherches Et D'applications Scientifique
LandOfFree
Osmotic pumps does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Osmotic pumps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Osmotic pumps will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1866548