Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1994-11-21
1996-06-04
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 139
Patent
active
055228534
ABSTRACT:
A method and apparatus for progressive recruitment of cardiac fibrillation uses an implantable defibrillator to deliver a multiple, discontinuous pulse waveform that is comprised of a series of smaller recruitment pulses delivered prior to delivery of a larger defibrillating pulse. Instead of using multiple identical pulses to accomplish defibrillation, the present invention decreases the overall energy required for effective defibrillation with a single, larger defibrillation pulse by using multiple, smaller recruitment pulses to recruit or capture as many heart cells as possible into a primary one of the many activation wavefronts in a fibrillating heart. By synchronizing the heart cells recruited in this manner, the effectiveness of the single, larger defibrillation pulse is increased, thereby decreasing the maximum stored energy required for defibrillation.
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Angeion Corporation
Getzow Scott M.
Kamm William E.
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