Micropressors, devices and methods for use in analyte monitoring systems

  • US 7,523,004 B2
  • Filed: 11/09/2005
  • Issued: 04/21/2009
  • Est. Priority Date: 03/22/2002
  • Status: Active Grant
  • ×
    • Pin Icon | RPX Insight
    • Pin
First Claim
Patent Images

1. A method of obtaining an analyte value in biological fluid of a user with an analyte sensor having two electrode sets coupled to a microprocessor, the method comprising:

  • providing a plurality of data points via the microprocessor by;

    contacting the two electrode sets with biological fluid of a user, in which each electrode set includes an iontophoretic electrode and an electrochemical sensor element in contact with the biological fluid and each of the two iontophoretic electrodes function as either a cathode or anode while in contact with the fluid;

    measuring a total signal from the sensor element associated with the iontophoretic electrodes;

    extracting a signal from the total signal related to the analyte from the sensor element associated with the iontophoretic electrodes to provide the plurality of data points;

    evaluating said data points, via the microprocessor for one or more non-monotonic events and (i) if the data points have an acceptable monotonic trend the measurement signal is accepted for further processing, or (ii) if the data points comprise one or more non-monotonic events then a percent contribution of said one or more non-monotonic events relative to total measurement signal is further evaluated, and if the percent contribution is less than a predetermined threshold value or falls within a predetermined range relative to total measurement signal then the measurement signal is accepted for further processing unless the percent contribution is greater than a predetermined threshold value or falls outside a predetermined range relative to total measurement signal then the measurement signal is not accepted for further processing and skipped;

    integrating, via the microprocessor, the signal related to the analyte over time to obtain a charge signal as being proportional to a value of the analyte; and

    displaying, via the microprocessor, the analyte value of the biological fluid of the user for diagnostic purposes.

View all claims
  • 2 Assignments
    ×
    ×

    Thank you for your feedback

    ×
    ×