Liquid metering and transfer valve assembly

Details Liquid metering and transfer valve assembly Liquid metering and transfer valve assembly

G - Physics

01

F

G01F 11/22 (2006.01) G01N 1/00 (2006.01) G01N 15/10 (2006.01)

Patent

CA 2076034

2076034 9210734 PCTABS00013 A liquid metering and transfer valve assembly having the capability of metering, isolating, transfering and delivering precise microliter volume aliquots of a blood sample, from a source thereof, to mixing and testing means of an electronic blood analysis system for analysis, and further, carrying a loop (92) for metering and isolating an additional sample aliquot within said valve assembly in the loop, a first dedicated passageway (70) for introducing a first fluid to said loop (92), to force said additional aliquot from its isolated location to a first dedicated portion (114) of the valve assembly displaced from said loop (92) and a second dedicated portion (68) of said valve assembly to establish a flow path for introducing a lysing reagent to the first dedicated portion (114) to force said additional aliquot from its displaced disposition, as a lyse reagent/aliquot mixture, to a selected additional mixing and testing chamber (108) exterior of said valve assembly without contaminating any interior flow path traversed by a blood sample and associated diluent thereof within the valve assembly.

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