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Adherent cardiac monitor with advanced sensing capabilities

  • US 9,579,020 B2
  • Filed: 05/24/2013
  • Issued: 02/28/2017
  • Est. Priority Date: 09/14/2007
  • Status: Active Grant
First Claim
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1. A system for monitoring a patient, the system comprising:

  • a first adherent device adapted to be adhered to a skin of a patient, the first adherent device having a first support with a first adhesive configured to adhere the first support to the skin, the first adherent device including first electrodes supported with the first support to couple to the skin of the patient, the first adherent device adapted to measure physiological parameters of the patient with the first electrodes when coupled to the skin of the patient during a first monitoring period, the first electrodes defining a first electrode axis;

    a second adherent device adapted to be adhered to the skin of the patient, the second adherent device having a second support with a second adhesive configured to adhere the second support to the skin, the second adherent device including second electrodes supported with the second support to couple to the skin of the patient, the second adherent device adapted to measure physiological parameters of the patient with the second electrodes when coupled to the skin of the patient during a second monitoring period subsequent the first monitoring period, the second electrodes define a second electrode axis;

    at least one accelerometer couplable to at least one of the first adherent device or the second adherent device and having a measurement axis aligned with the respective electrode axis, wherein the at least one accelerometer is adapted to determine an orientation of the respective electrode axis of the first electrodes or the second electrodes relative a reference axis of the patient when coupled to the first or second adherent device during the respective monitoring periods; and

    a processor system comprising a tangible medium configured to modify the measured physiological parameters based on the determined orientations of the first electrode axis or the second electrode axis such that errors in the physiological parameter measurements associated with changes in the orientation of the first and second adherent devices are reduced.

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