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System and methods for wireless body fluid monitoring

  • US 8,374,688 B2
  • Filed: 09/12/2008
  • Issued: 02/12/2013
  • Est. Priority Date: 09/14/2007
  • Status: Active Grant
First Claim
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1. An adherent device to monitor a tissue hydration of a patient, the device comprising:

  • an adhesive patch to adhere to a skin of the patient;

    at least four electrodes connected to the patch and capable of electrically coupling to the patient; and

    circuitry coupled to the at least four electrodes to measure a tissue resistance of the patient at a plurality of frequencies greater than zero, wherein the circuitry is configured to determine the tissue hydration using the measured tissue resistance, and wherein the circuitry is configured to detect a low frequency droop in the tissue resistance and to, when low frequency droop is detected, temporarily suspend data collection based at least in part on the fact that the low frequency droop has been detected.

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