INTEGRATED MICROFLUIDIC CHECK VALVE AND DEVICE INCLUDING SUCH A CHECK VALVE
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United States of America Patent
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Issued Date -
Feb 7, 2013
app pub date -
Aug 2, 2011
filing date -
Aug 2, 2011
priority date (Note) -
Abandoned
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Abstract
An integrated microfluidic check valve has a first chamber having inlet and outlet ports and divided by a barrier the said inlet and outlet ports into first and second subchambers. A membrane forms a wall of the first chamber and co-operates with the barrier to selectively permit and prevent fluid flow between the inlet and outlet ports. A second chamber adjoining the first chamber and has a wall formed by the membrane. A microfluidic channel establishes fluid communication between the second chamber and the first subchamber. The membrane deflects to permit fluid flow around the barrier when the pressure in the first subchamber is lower than the pressure in the second subchamber. Two such valves can be combined into a peristaltic pump.
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