Patents Examined by Kennedy J. Schatzle
  • Dual capacitor biphasic defibrillator waveform generator employing selective connection of capacitors for each phase
    Patent number: 5411525
    Abstract: An implantable defibrillator/cardioverter which generates a biphasic defibrillation/cardioversion waveform including a pulse generator comprising two capacitors and a pair of switches for connecting the capacitors in parallel during a first phase and in series during a second phase. The first phase has a small "tilt" between the leading edge voltage and the trailing edge voltage. The second phase has a leading edge voltage which is approximately twice the trailing edge voltage of the first phase.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: May 2, 1995
    Assignees: Cardiac Pacemakers, Inc., Duke University
    Inventors: David K. Swanson, Raymond E. Ideker, Greg Walcott