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Methods and systems for detecting the hydration of sensors

  • US 10,288,578 B2
  • Filed: 12/21/2017
  • Issued: 05/14/2019
  • Est. Priority Date: 12/30/2005
  • Status: Active Grant
First Claim
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1. A sensor system, comprising:

  • a glucose sensor, the sensor including a plurality of electrodes that are configured to be implanted or disposed subcutaneously within a patient'"'"'s body so as to be in continuous contact with the patient'"'"'s bodily fluids; and

    a sensor electronics device that is coupled to the sensor and includes;

    a detection circuit that receives a first signal and generates a first interrupt after receipt of the first signal, said first signal being indicative of the level of hydration of said electrodes; and

    a microcontroller that receives the first interrupt and sets a first indicator indicating the sensor is hydrated, transmits a second signal, the second signal being representative of a sequence of voltages to be applied to the sensor over a stabilization timeframe lasting 10 minutes, 15 minutes, or 20 minutes to stabilize the sensor, and sets a second indicator after said sequence of voltages has been applied to the sensor, wherein said sequence of voltages includes a first voltage applied for a first period of time and a second voltage different from the first voltage and applied for a second period of time, wherein the microcontroller receives a sensor signal from the sensor, and wherein, when the first and second indicators are set, the microcontroller utilizes said sensor signal representing measurement of the patient'"'"'s blood glucose level.

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