Signal processing for continuous analyte sensor

  • US 9,498,155 B2
  • Filed: 10/16/2008
  • Issued: 11/22/2016
  • Est. Priority Date: 12/09/2003
  • Status: Active Grant
First Claim
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1. A method for processing glucose sensor data, the method comprising:

  • obtaining a glucose measurement using a glucose sensor in contact with a biological fluid, wherein the glucose sensor comprises a first electrode, a second electrode, and an enzyme-containing film, the obtaining comprising;

    applying a potential to the glucose sensor at a first setting,measuring a first signal from the glucose sensor at the first setting,switching the potential from the first setting to a second setting, wherein the first setting is different from the second setting,measuring a second signal from the glucose sensor at the second setting, andgenerating a glucose concentration value, using a processor coupled to a memory of a sensor electronics unit, based at least in part on the measured first signal and the measured second signal;

    displaying, using a display, a first screen presenting generated glucose concentration data over a first time period;

    displaying, using the display, a second screen presenting generated glucose concentration data over a second time period, wherein the second time period is different in length from the first time period;

    displaying, using the display, a third screen presenting a single generated real-time glucose concentration value;

    receiving an input from a user to toggle between the first screen, the second screen, and the third screen of the display;

    receiving an input from the user related to mealtime information, wherein the mealtime information is displayable on the display;

    receiving information from the user related to a glucose concentration target range, wherein the glucose concentration target range is represented by an upper boundary and a lower boundary, and wherein the upper boundary and the lower boundary are user configurable; and

    generating an alert responsive to detection of a hyperglycemic condition or a hypoglycemic condition based at least in part on the single generated real-time glucose concentration value being outside the glucose concentration target range,wherein the sensor electronics unit is configured to modify a glucose concentration determined from the first signal by accounting for an adjustment derived from the second signal.

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