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Electrode spacing in a subcutaneous implantable cardiac stimulus device

  • US 8,483,841 B2
  • Filed: 12/11/2009
  • Issued: 07/09/2013
  • Est. Priority Date: 12/12/2008
  • Status: Active Grant
First Claim
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1. A method of treating a patient comprising:

  • implanting a cardiac stimulus system into a patient, the cardiac stimulus system including a canister having an electrode and a defibrillation lead having proximal and distal ends, the proximal end being connected to the canister, the defibrillation lead including a distal tip with a distal sensing electrode disposed at the distal tip, and a distal portion having a defibrillation coil and a distal sensing electrode disposed distal of the defibrillation coil, such that each of the canister and the defibrillation lead are implanted subcutaneously over the ribs of the patient;

    wherein the cardiac stimulus system, once implanted, is configured to;

    deliver stimulus to the patient using the defibrillation coil and the canister electrode; and

    sense cardiac activity of the patient following delivery of the stimulus using the distal sensing electrode; and

    wherein the defibrillation lead is constructed such that a gap is defined between a proximal side of the distal sense electrode and a distal end of the defibrillation coil, and the gap is at least nineteen (19) millimeters, with no other electrode therebetween.

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