Transcutaneous analyte sensor

  • US 9,451,910 B2
  • Filed: 08/27/2010
  • Issued: 09/27/2016
  • Est. Priority Date: 09/13/2007
  • Status: Active Grant
First Claim
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1. A sensor system for measuring an analyte concentration in a host, the system comprising:

  • a sensor configured to continuously measure an analyte concentration in a host;

    a sensor electronics module configured to electrically couple to the sensor, wherein the sensor electronics module comprises sensor electronics configured to provide a signal associated with the analyte concentration in the host, a radio frequency identification device, an internal power supply configured to supply power to the electronics module, and a switch operatively connected to the power supply, the switch configured to switch between a first state and a second state, wherein the internal power supply is configured to be in a first power mode when the switch is in the first state and in a second power mode when the switch is in the second state, the first power mode supplying less power to the sensor electronics module than the second power mode, and wherein the internal power supply provides power to the sensor electronics sufficient to provide a bias voltage for the sensor so to generate the signal associated with the analyte concentration; and

    a receiver device having a power supply configured to inductively power the radio frequency identification device when the receiver is placed in proximity to the sensor electronics module, a processor configured to generate estimated analyte concentration values, and a display configured to display the estimated analyte data values,wherein the radio frequency identification device is configured to transmit the information representative of the measured analyte concentration and a calibration code responsive to the receiver device interrogating the sensor electronics module, wherein the external power source provides the power to the radio frequency identification device so transmission of the information from the radio identification device to the receiver results in little or no impact on the internal power supply, andwherein generating the estimated analyte concentration values is based on the information representative of the measured analyte concentration and the calibration code.

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