US 12,296,332 B2
Micro-assay cartridges
Yining Shi, Fremont, CA (US)
Assigned to MicroPoint Bioscience Inc., Santa Clara, CA (US)
Filed by MicroPoint Bioscience Inc., Santa Clara, CA (US)
Filed on Jul. 18, 2020, as Appl. No. 16/932,741.
Claims priority of provisional application 62/876,170, filed on Jul. 19, 2019.
Prior Publication US 2021/0016275 A1, Jan. 21, 2021
Int. Cl. B01L 3/00 (2006.01); G01N 33/49 (2006.01); G01N 33/86 (2006.01); H01M 4/00 (2006.01)
CPC B01L 3/502707 (2013.01) [G01N 33/4905 (2013.01); G01N 33/492 (2013.01); G01N 33/86 (2013.01); B01L 2300/0636 (2013.01); B01L 2300/0816 (2013.01); B01L 2300/0864 (2013.01); H01M 4/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A fibrinogen assay cartridge comprising:
a first channel comprises thrombin;
a second channel;
a sample inlet in fluid contact with the first channel and the second channel;
an inlet channel comprising a starting electrode in contact with the inlet channel and located between the sample inlet and the thrombin;
wherein the first channel further comprises a timing electrode adapted to determine a time taken for a sample fluid to flow from the starting electrode to the timing electrode so as to determine an amount of fibrinogen in the sample fluid; an
wherein the second channel comprises a pair of electrodes adapted to detect an impedance or a resistance of the sample fluid so as to determine an amount of particles in the sample fluid,
whereby the impedance or the resistance measured across the pair of electrodes is proportional to the amount of the particles in the sample fluid, and the time for the sample fluid to flow to the timing electrode is inversely proportional to the amount of fibrinogen in the sample fluid.