Remote valving for microfluidic flow control
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United States of America Patent
Stats
-
Sep 9, 2003
Grant Date -
Mar 21, 2002
app pub date -
Aug 3, 2001
filing date -
Aug 4, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of controlling fluid flow within a microfluidic circuit using external valves and pumps connected to the circuit is disclosed. The external valves and pumps, which are not a part of the microfluidic substrate, control fluid pumping pressure and the displacement of air out of the fluid circuit as fluid enters into the circuit. If a valve is closed, air cannot be displaced out of circuit, which creates a pneumatic barrier that prevents fluid from advancing within the circuit (under normal operating pressures). Applications of this method of fluid control are explained.
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