Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1995-10-25
1997-06-03
Jastrzab, Jeffrey R.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 7, 607 74, A61N 139
Patent
active
056349386
ABSTRACT:
An implantable defibrillator/cardioverter which generates a biphasic waveform having a duration of at least 15-80 msec and a small "tilt" between the leading edge and trailing edge voltages of each phase. In one embodiment, two capacitors are connected in parallel to create an effectively large capacitance to generate a slowly decaying waveform. In another embodiment, a high capacitance bipolar capacitor is used, which capacitance is at least 200 microFarads.
REFERENCES:
patent: 4375817 (1983-03-01), Engle et al.
patent: 4548203 (1985-10-01), Tacker, Jr. et al.
patent: 4800883 (1989-01-01), Winstrom
patent: 4821723 (1989-04-01), Baker, Jr. et al.
patent: 4953551 (1990-09-01), Mehra et al.
patent: 5199429 (1993-04-01), Kroll et al.
Tang, et al., "Ventricular Defibrillation Using Biphasic Waveforms: The Importance of Phasic Duration", Biphasic Waveforms for Defibrillation, 207-214 (1989).
Jones, et al., "Increasing Fibrillation Duration Enhances Relative Asymmetrical Biphasic Versus Monophasic Defibrillator Waveform Efficacy", Circulation and Research, 376-384 (1990).
Wessale, et al., "Bipolar Catheter Defibrillation in Dogs Using Trapezoidal Waveforms of Various Tilts", Catheter Defibrillation with Trapezoidal Waveforms, 359-365 (1980).
Irnich, "The Chronaxie Time and Its Practical Importance", The Chronaxie Time and Its Practical Importance, 292-301 (1980).
Feeser, et al., "Strength-Duration and Probability of Success Curves for Defibrillation With Biphasic Waveforms", Success Curves for Defibrillation, 2128-2141 (1990).
Winkle, et al., "Improved low energy defibrillation efficacy in man with the use of biphasic truncated exponential waveform", Biphasic waveform defibrillation in man, 122-127 (1989).
Koning, et al., "Amplitude-duration relation for direct ventricular defibrillation with rectangular current pulses*", Medical and Biological Engineering, 388-395 (1975.
Chapman, et al., "Strength-Duration Curves of Fixed Pulse Width Variable Tilt Truncated Exponential Waveforms for Non-thoracomy Internal Defibrillation in Dogs", 1045-1050 (1988).
Bardy, et al., "A Prospective Randomized Evaluation of Biphasic Versus Monophasic Waveform Pulses on Defibillation Efficacy in Humans", Biphasic Versus Monophasic Defibrillation, 728-33, (1989).
Kavanagh, et al., "Comparison of the Internal Defibrillation Thresholds for Monophasic and Double and Single Capacitor Biphasic Waveforms", Monophasic, Double and Single Capacitor Waveforms, 1343-1349 (1989).
McDaniel, et al., Optimal Biphasic Waveform Duration for Canine Cardiac Defibrillation with a "Single Capacitor" Waveform and a Non-Thoractomy Electrode System, Annual International Conference of the IEEE Engineering in Medicine and Biology Society, vol. 12, No. 2, 1990, pp. 636-637.
Lang, et al., Strength-Duration Relationship for Biphasic Defibrillation in Dogs, IEEE Engineering in Medicine & Biology Society 11th Annual International Conference, Ventricular Defibrillation, 1989, pp. 80-81.
McDaniel, et al., An Up-Down Algorithm for Estimation of the Cardiac Ventricular Defibrillation Threshold, Medical Instrumentation, 1988, vol. 22, No. 8, pp. 286-292.
Eaton, Multivariate Statistics: A Vector Space Approach, New York, John Wiley & Sons, Inc., 1983, pp. 150-154.
Chatfield, Statistics for Technology, London, Chapman and Hall, 1975, pp. 121-125.
Dixon, The Up-Down Method for Small Samples, J Am Stat. Assoc., 1965: 60:967-978.
Weiss, Sur La Possibilite De Rendre Comparables Entre Eux Les Appareils Servant A L'Excitation Electrique, Arch Ital Biol, Turin, Hermann Loescher 1901; 35:413-446.
Lang Douglas J.
Nelson James P.
Swanson David K.
Cardiac Pacemakers Inc.
Jastrzab Jeffrey R.
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