Multiple pulse defibrillation for subcutaneous implantable cardiac devices
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United States of America Patent
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Aug 16, 2011
Grant Date -
Dec 11, 2008
app pub date -
Aug 12, 2008
filing date -
Nov 9, 2004
priority date (Note) -
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Abstract
Cardiac stimulation methods and systems provide for multiple pulse defibrillation, and involve sensing a fibrillation event, determining a fibrillation cycle length associated with the fibrillation event, and delivering a plurality of defibrillation pulses to treat the fibrillation event. Defibrillation pulses are delivered using a combination of subcutaneous non-intrathoracic electrodes. Delivery of each defibrillation waveform subsequent to a first defibrillation waveform is separated in time by a delay associated with the fibrillation cycle length. Delays between defibrillation waveform delivery may be associated with a percentage of the fibrillation cycle length.
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