A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/80
A61M 5/14 (2006.01) A61M 5/142 (2006.01)
Patent
CA 1243245
Abstract of the Invention An Implantable Demand Medication Delivery Assembly An implantable demand medication delivery assembly for delivering measured aliquots of liquid medication. The assembly includes a reservoir which stores the liquid medication to be delivered. The assembly also includes a pump which is in fluid communication with the reservoir. The pump includes a housing having an inlet port in fluid communication with the reservoir and an outlet port. Connected to the outlet port is a delivery catheter for delivering the liquid medication to a site within the patient wherein the assembly is implanted. The pump also includes a fluid passage which extends between the inlet and outlet port. A chamber is provided along the fluid passage for containing a preselected volume of liquid medication to be delivered. A resilient deformable wall on the pump extends over the chamber. A one-way valve is provided in the fluid passage between the inlet port and chamber for permitting fluid flow toward the chamber. A pressure regulated valve is provided in the fluid passage between the chamber and outlet port for selectively permitting fluid flow through the delivery catheter upon actuation of the pump. A puncturable and resealable injection site can also be part of the assembly and, when part of the assembly, is in fluid communication with the reservoir.
489971
Coe Frederick L.
Hannula Donald L.
Allegiance Corporation
Macrae & Co.
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