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Apparatus and method for improved measurements of a monitoring device

  • US 9,482,640 B2
  • Filed: 09/23/2013
  • Issued: 11/01/2016
  • Est. Priority Date: 09/20/2010
  • Status: Active Grant
First Claim
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1. A test meter, comprising:

  • a housing;

    a strip port connector attached to the housing, the strip port connector being configured to receive an electrochemical test strip and including at least one electrical connector; and

    a single high impedance circuit configured for making electrochemical determinations and to electrically connect with an electrochemical test strip received in the strip port connector via the at least one electrical connector, the single high impedance circuit comprising;

    a detection component in contact with a first electrical connector;

    a sense resistor in electrical communication with the detection component;

    a voltage reference point configured to be in electrical communication with an electrode of an electrochemical test strip in contact with a second electrical connector; and

    a wetting supply in contact with a third electrical connector;

    wherein the high impedance circuit is configured for detecting;

    (1) a first voltage in the absence of an electrochemical test strip in electrical communication with the circuit;

    (2) a second voltage in the presence of an electrochemical test strip that is devoid of bodily fluid sample in electrical communication with the circuit, wherein an electrical connection between the first electrical connector and the third electrical connector is formed; and

    (3) a third voltage in the presence of an electrochemical test strip in electrical communication with the circuit, wherein an electrical connection between the first electrical connector, the second electrical connector, and the third electrical connector of the strip port connector is formed with an amount of a bodily fluid sample sufficient to perform an electrochemical test in the electrochemical test strip and in which the presence of the sample electrically couples each of the wetting supply, the sense resistor, and the voltage reference point via the electrical connectors within the defined single circuit.

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