Micropumps with passive check valves

Details Micropumps with passive check valves Micropumps with passive check valves

2005-04-05

2005-04-05

Esquivel, Denise L. (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S536000, C251S149900, C251S218000, C251S315040, C251S315040, C251S315040, C604S164050, C604S246000, C604S164060

Reexamination Certificate

active

06874999

ABSTRACT:
An exemplary device and method for microfluidic transport is disclosed as providing inter alia a passive check valve (100), a fluid inlet channel (210), a fluid outlet channel (220) and a pumping cavity (240). The fluid inlet channel (210) is generally configured to flow a fluid through the check valve (100). The check valve (100) generally provides substantially passive means for preventing or otherwise decreasing the incidence of purged outlet fluid re-entering either the pumping cavity (240) or the fluid inlet channel (210). Accordingly, the reduction of backflow generally tends to enhance overall pumping performance and efficiency. Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve micropump operation in any microfluidic application. Exemplary embodiments of the present invention representatively provide for substantially self-priming micropumps that may be readily integrated with, for example, existing portable ceramic technologies for the improvement of device package form factors, weights and other manufacturing and/or device performance metrics.

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