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Non-magnetic high voltage charging system for use in cardiac stimulation devices

  • US 9,999,778 B2
  • Filed: 07/09/2010
  • Issued: 06/19/2018
  • Est. Priority Date: 08/11/2009
  • Status: Active Grant
First Claim
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1. An external cardiac defibrillator comprising:

  • defibrillation electrode pads configured to make external electrical contact with a torso configured to deliver the cardiac defibrillation shock to the torso; and

    an electrical circuit including an electrical storage element, inductors including only air core inductors, and a piezoelectric transformer arranged to charge the electrical storage element to a voltage effective for delivering a cardiac defibrillation shock, the electrical circuit configured to discharge the electrical storage element across the defibrillation electrode pads to deliver a cardiac defibrillation shock to the defibrillation electrode pads;

    wherein the cardiac defibrillator does not contain any ferromagnetic material and is disposed externally of a patient.

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