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Cuvette-based apparatus for blood coagulation measurement and testing

  • US 10,180,419 B2
  • Filed: 08/05/2013
  • Issued: 01/15/2019
  • Est. Priority Date: 07/16/2008
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a cuvette defining;

    a sample channel fluidically coupled to a sample deposit area at a blood sample receptor-inlet, at least a portion of the sample channel having a hydrophilic surface such that blood is automatically drawn from the sample-receptor inlet;

    a vent opening fluidically coupled to the sample channel, the vent opening configured to vent air from the sample channel as the sample channel fills with blood, a predetermined sample volume defined by a volume of the sample channel between the sample-receptor inlet and the vent opening;

    a waste channel fluidically coupled to the sample channel between the blood sample receptor-inlet and the vent opening, a flow restriction at an intersection of the waste channel and the sample channel impeding blood from flowing into the waste channel until the sample channel is filled to the vent opening such that the sample channel automatically fills with the predetermined sample volume.

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