Microfluidic assay devices and methods
First Claim
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1. A microfluidic chip comprising:
- a plurality of flow channels formed as a matrix defining reaction chambers that are arranged in a plurality of fluidic columns and a plurality of fluidic rows, a first plurality of valves that upon actuation turn off fluidic communication through the fluidic rows of the matrix while permitting flow through the fluidic columns of the matrix, a second plurality of valves that upon actuation turn off fluidic communication through columns of the matrix while permitting flow through the fluidic rows of the matrix, and a plurality of dedicated flushing channels that are addressable to switch between flushing the fluidic columns and flushing the fluidic rows.
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Abstract
A microfluidic device adapted to perform many simultaneous binding assays including but not limited to immunological experiments, such as ELISA assays, with minimal cross-talk between primary and secondary antibodies.
89 Citations
43 Claims
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1. A microfluidic chip comprising:
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a plurality of flow channels formed as a matrix defining reaction chambers that are arranged in a plurality of fluidic columns and a plurality of fluidic rows, a first plurality of valves that upon actuation turn off fluidic communication through the fluidic rows of the matrix while permitting flow through the fluidic columns of the matrix, a second plurality of valves that upon actuation turn off fluidic communication through columns of the matrix while permitting flow through the fluidic rows of the matrix, and a plurality of dedicated flushing channels that are addressable to switch between flushing the fluidic columns and flushing the fluidic rows. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40)
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19. A microfluidic chip for performing immunoassays comprising:
a plurality of reaction chambers configured to reduce antibody crosstalk, the chambers having a volume of less than 5 nL per chamber and wherein the immunoassay sensitivity is less than about 1×
103 pg/mL and the dynamic range of the assay is equal to or greater than about 1×
102.- View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 34)
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41. A microfluidic device for performing 432 or greater simultaneous immunoassays in less than 6 hours.
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42. A microfluidic device for performing 864 or greater simultaneous immunoassays in less than 6 hours.
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43. A microfluidic device for performing 864 or greater simultaneous immunoassys in less than 6 hours with a limit of detection of 10 μ
- g/mL or lower for sample antigen or antibody.
Specification