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US 2011/0094600 A1Published application
Serial siphon valves for fluidic or microfluidic devices
AssigneesUniversite Laval, The Regents of the University of California
InventorsMichel G. Bergeron, Regis Peytavi, Horacio Kido, Marc Madou
Life of this patent
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Abstract
Methods and devices using a co-radial arrangement of serial siphon structures composed of siphon valves each separated by a capillary valve to save radial space in a fluidic system. Such serial siphon valves allow to sequentially distribute liquids in a fluidic system upon application of successive centripetal accelerations and decelerations applied to a rotary platform.
Claims29
A centripetal fluidic device comprising:
- a fluidic network comprising an upstream chamber, a downstream chamber, and a serial siphon valve conduit interposed therebetween and in fluid communication therewith at each respective opposite end thereof, said serial siphon valve conduit comprising a series of co-radial siphon valves separated by valve structures, wherein when applying a centripetal force to said fluidic network, a fluid within said network flows in the downstream direction.
(canceled)
(canceled)
A centripetal fluidic device comprising:
- a fluidic network comprising an upstream chamber, a downstream chamber, and a serial siphon valve conduit interposed therebetween and in fluid communication therewith at each respective opposite end thereof, said serial siphon valve conduit comprising a series of siphon valves separated by valve structures, a given upstream said siphon valve being in directly in fluid communication with an adjacent downstream said siphon valve via a said valve structure interposed therebetween,
- wherein when applying a centripetal force to said fluidic network, a fluid within said network flows in the downstream direction.
-47. (canceled)
A centripetal fluidic device comprising:
- a fluidic network comprising an upstream chamber, a downstream chamber and a at least one siphon valve interposed therebetween and in fluid communication therewith, said siphon valve comprising a siphon structure in fluid communication with a capillary valve for blocking fluid movement at low G-force;
- wherein (a) when applying a centripetal force on said fluidic network, a fluid in said upstream chamber flows into said siphon structure;
- (b) when said centripetal force is greater than the capillary force of said siphon valve, the fluid flows within said siphon structure for a distance determined by the fluid pressure therein being equal to the fluid pressure within said upstream chamber;
- (c) when said centripetal force is lesser than said capillary force, the fluid flows to said capillary valve and is stopped thereby, and (d) when a subsequent said centripetal force is greater than said capillary force, said capillary valve is burst and the fluid flows towards said downstream chamber.
1 more element
-54. (canceled)
A centripetal fluidic device comprising:
- a fluidic network comprising an upstream chamber, a downstream chamber and a serial siphon valve conduit interposed therebetween and in fluid communication therewith at each opposite end thereof, said serial siphon valve conduit comprising a series of contiguous siphon valves separated by capillary valves for blocking fluid movement at low G-force;
- wherein (a) when applying a centripetal force on said fluidic network, a fluid in said upstream chamber flows into a first said siphon valve;
- (b) when said centripetal force is greater than the capillary force of a first said siphon valve, the fluid flows within said siphon valve for a distance determined by the fluid pressure therein being equal to the fluid pressure within said upstream chamber;
- (c) when said centripetal force is lesser than said capillary force, the fluid flows to said first capillary valve and is stopped thereby, and (d) when a subsequent said centripetal force is greater than said capillary force, said first capillary valve is burst and the fluid flows towards a subsequent said siphon valve.
1 more element
-78. (canceled)
Dependencies are inferred from the claim text.