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High-energy capacitors for implantable defibrillators

  • US 6,556,863 B1
  • Filed: 10/02/1998
  • Issued: 04/29/2003
  • Est. Priority Date: 10/02/1998
  • Status: Expired due to Fees
First Claim
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1. A defibrillation or cardioversion device comprising:

  • one or more leads for sensing electrical signals of a patient or for applying electrical energy to the patient;

    a monitoring circuit for monitoring heart activity of the patient through one or more of the leads; and

    a therapy circuit for delivering electrical energy through one or more of the leads to a heart of the patient, wherein the therapy circuit includes one or more capacitors which include a foil that comprises;

    first and second opposing surfaces which define a foil thickness, with the first opposing surface having one or more cavities each having a maximum depth less than the foil thickness and the second opposing surface having one or more cavities each having a maximum depth less than the foil thickness;

    wherein the cavities of the first surface have a first average maximum depth and the cavities of the second surface have a second average maximum depth, with the first and second average maximum depths being less than one-half the foil thickness; and

    one or more perforations through the foil

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