Analyte monitoring device and methods of use

  • US 9,498,159 B2
  • Filed: 10/30/2007
  • Issued: 11/22/2016
  • Est. Priority Date: 01/02/2001
  • Status: Active Grant
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First Claim
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1. An analyte monitoring system, comprising:

  • a transcutaneous analyte sensor including a conductive trace comprising a working electrode having an analyte responsive enzyme disposed on at least a portion of the working electrode, the analyte sensor positioned in fluid contact with a bodily fluid and adapted to monitor an analyte level in the bodily fluid during an entire sensor lifetime from when the sensor is initially positioned in fluid contact with the bodily fluid and continuously operating to generate signals representative of the analyte level of the bodily fluid until the analyte sensor is removed for replacement;

    sensor electronics including an application specific integrated circuit electrically coupled to the conductive trace of the sensor, the application specific integrated circuit configured to process signals representative of the analyte level of the bodily fluid received from the sensor, the sensor electronics generating data representative of the monitored analyte level using a factory determined calibration data during the entire sensor lifetime of at least one week, wherein the application specific integrated circuit is configured to encrypt the generated data for transmission; and

    a remote device that receives the encrypted data representative of the monitored analyte level generated by the sensor electronics, the remote device configured to evaluate whether the encrypted data are signals from a source other than the sensor electronics by at least decrypting the received encrypted data and comparing the decrypted data with a predetermined range of physiologically relevant values, and, in response to determining the encrypted data are from the sensor electronics, to display real time analyte level information and a rate of change information of analyte level based on the decrypted data.

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