F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
F15B 21/00 (2006.01) B01L 3/00 (2006.01) B81B 1/00 (2006.01) F15C 1/14 (2006.01) F15C 5/00 (2006.01)
Patent
CA 2417217
A method of controlling fluid flow within a microfluidic circuit (10) using external valves and pumps connected to the circuit (10) is disclosed. The external valves and pumps, which are not a part of the microfluidic substrate (11), control fluid pumping pressure and the displacement of air (17) out of the fluid circuit (10) as fluid enters into the circuit (10). If a valve is closed, air (17) cannot be displaced out of circuit, which creates a pneumatic barrier (18) that prevents fluid from advancing within the circuit (under normal operating pressures).
La présente invention concerne un procédé de régulation du débit de fluides dans un circuit microfluidique (10) faisant intervenir des soupapes et des pompes externes reliées au circuit (10). Ces soupapes et ces pompes externes, qui ne font pas partie du substrat fluidique (11), régulent la pression de pompage du fluide et le déplacement de l'air (17) à l'extérieur du circuit fluidique (10) lorsque le fluide pénètre dans le circuit (10). Si l'une des soupapes est fermée, l'air (17) ne peut plus se déplacer à l'extérieur du circuit, créant ainsi une barrière pneumatique (18) qui empêche le fluide d'avancer dans le circuit (dans le cas de pressions de fonctionnement normale).
Mcneely Michael
Spute Mark
Biomicro Systems Inc.
Oyen Wiggs Green & Mutala Llp
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