A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
222/54, 128/80
A61M 5/14 (2006.01) A61M 5/148 (2006.01) A61M 1/36 (2006.01) A61M 5/168 (2006.01)
Patent
CA 2031773
ABSTRACT A portable liquid reservoir and delivery assembly particularly suited to ambulatory patients in which liquid under pressure from an expansible container is metered through a valve system under electronic control which includes valve means for filling and emptying a dosage chamber for metering the liquid. The reservoir can be filled initially through an elastic septum, which is protected by a tamper proof cap, which prevents re-use of the reservoir, and which ensures that delivery of medicament can only take place if the cap is properly Installed. A sensor for the dosage chamber allows accurate delivery of liquid, regardless of minor variations in assembled location between the reservoir/valve pack and the electronics control unit. A priming key for the system which overrides the inherent safety features to allow initial flow and elimination of air from the system is also described.
Pugh Sydney M.
Salter Geoffrey D.v.
Smith Timothy J.n.
Strong David S.
Borden Ladner Gervais Llp
Pugh Sydney M.
Q-Life Systems Inc.
Salter Geoffrey D.v.
Smith Timothy J.n.
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