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Testing of defibrillator electrodes

  • US 9,278,228 B2
  • Filed: 05/25/2012
  • Issued: 03/08/2016
  • Est. Priority Date: 05/26/2011
  • Status: Active Grant
First Claim
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1. A defibrillator system comprising:

  • a pair of electrodes, configured to be separate from one another but in direct electrical contact with a patient when in an electrode defibrillation condition for performing defibrillation of the patient, and configured to be electrically connected together while not in direct contact with the patient when in an electrode storage condition for storing the pair of electrodes prior to defibrillation;

    a defibrillation signal generator, connected with the pair of electrodes, for providing a defibrillation shock at a controlled electrical defibrillation output value to a patient;

    a controller device; and

    a non-transitory memory having instructions stored which, when executed by the controller device, cause the controller device to perform operations comprising, when the pair of electrodes is in an electrode storage condition;

    setting a gain characteristic of an amplifier in the controller device at a first gain value to process signals for the performing of defibrillation of the patient; and

    upon determining a test of the pair of electrodes should occur;

    modifying the gain characteristic of the amplifier to a second gain value which is distinct from the first gain value, wherein the second gain value is for processing signals while in the electrode test signal receive state;

    sending an electrode integrity test signal to the pair of electrodes in the electrode storage condition;

    processing the electrode integrity test signal result using the second gain value; and

    when the electrode integrity test signal result indicates degradation of the pair of electrodes, issuing a warning, wherein the degradation is indicated by the electrode integrity test signal result having an impedance outside a threshold range.

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