Medical devices and methods

  • US 10,492,685 B2
  • Filed: 08/31/2015
  • Issued: 12/03/2019
  • Est. Priority Date: 08/31/2009
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • an analyte sensor having a portion configured to be in fluid contact with bodily fluid under a skin surface and configured to generate signals corresponding to monitored analyte level in the bodily fluid;

    a power supply;

    a data storage unit for storing analyte sensor calibration information, the analyte sensor calibration information including a factory calibration value for calibrating data for the generated signals corresponding to the monitored analyte level in the bodily fluid, wherein the factory calibration value is not modified during the entire period of the analyte sensor usage life; and

    sensor electronics operatively coupled to the analyte sensor and the power supply, the sensor electronics including a communication component configured to receive the signals generated by the analyte sensor and one or more other components to generate one or more data packets including the received signals from the analyte sensor;

    wherein the sensor electronics is configured to operate in a first mode wherein the communication component is in a low power state while the sensor electronics draw power from the power supply to operate the one or more other components; and

    wherein the sensor electronics is configured to switch from operating in the first mode into operating in a second mode for the sensor electronics to draw power from radio frequency (RF) power of a remote device and to operate the communication component only using the power drawn from the RF power of the remote device to transmit the generated one or more data packets to the remote device, while the sensor electronics is simultaneously drawing the power from the power supply to operate the one or more other components.

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