Dual chamber pumping apparatus

Details Dual chamber pumping apparatus Dual chamber pumping apparatus

A - Human Necessities

61

M

128/82

A61M 1/00 (2006.01) A61M 5/142 (2006.01) F04B 43/02 (2006.01) F04B 53/10 (2006.01)

Patent

CA 2003402

ABSTRACT A dual chamber pumping apparatus and method for infusing fluids to a patient includes a disk having a fluid inlet and a fluid outlet. Resilient membranes are attached to opposite sides of the disk to establish dual pumping chambers, and a network of one-way valves connects the fluid inlet in alternating fluid communication with the pumping chambers. A one-way outlet valve connects the pumping chambers alternately in fluid communication with the fluid outlet. The one-way valves utilize a hollow, elastomeric tube fixedly disposed in passageways within the disk for covering and uncovering respective ports in response to fluid pressure differentials on the inner and outer surfaces of the walls of the hollow, elastomeric tube.

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