Self adjusting optimal waveforms

Details Self adjusting optimal waveforms Self adjusting optimal waveforms

2007-10-16

2007-10-16

Layno, Carl (Department: 3766)

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

Reexamination Certificate

active

11102002

ABSTRACT:
An exemplary method includes detecting fibrillation, measuring impedance of a defibrillation circuit that includes myocardial tissue, determining one or more defibrillation shock parameters based at least in part on the impedance, delivering a defibrillation shock using the one or more defibrillation shock parameters and, if the shock was unsuccessful, adjusting a membrane time constant and determining one or more new defibrillation shock parameters based at least in part on the adjusted membrane time constant. Various other exemplary methods are disclosed as well as various exemplary devices, systems, etc.

REFERENCES:
patent: 4712555 (1987-12-01), Thornander et al.
patent: 4788980 (1988-12-01), Mann et al.
patent: 4940052 (1990-07-01), Mann et al.
patent: 4944298 (1990-07-01), Sholder
patent: 5230336 (1993-07-01), Fain et al.
patent: 5391186 (1995-02-01), Kroll et al.
patent: 5466254 (1995-11-01), Helland
patent: 5476483 (1995-12-01), Bornzin et al.
patent: 5531764 (1996-07-01), Adams et al.
patent: 5540723 (1996-07-01), Ideker et al.
patent: 5991658 (1999-11-01), Brewer et al.
patent: 6198967 (2001-03-01), Brewer et al.
patent: 6314323 (2001-11-01), Ekwall
patent: 6643545 (2003-11-01), Ideker et al.
patent: 2001/0053925 (2001-12-01), Ideker et al.
patent: 0782870 (1997-07-01), None
patent: 0782870 (1998-04-01), None
patent: 0722349 (1999-12-01), None
patent: 0782870 (2003-06-01), None
patent: WO95/09673 (1995-04-01), None
patent: WO95/16492 (1995-06-01), None
Qu, Fujian et al., “The Gurvich Waveform Has Lower Defibrillation Threshold than the Rectilinear Waveform and the Truncated Exponential Waveform in the Rabbit Heart,” Can. J. Physiol. Pharmacol. 83:152-160 (2005).
Kent A. Mowrey et al., “Kinetics of Shock Induced Transmembrane Polarization: Effect of Ischemia”, JACC—Cardiac Arrhythmias; Mar. 2002; 1209-108 (Abstract).
Yuanna Cheng et al., “Mechanisms of Shock-Induced Arrhythmogenesis During Acute Global Ischemia”, Am J. Physiol Heart Circ Physiol; Feb. 2002; pp. H2141-H2151.
Michael R. Gold, MD, PhD et al., “Strength-Duration Relationship for Human Transvenous Defibrillation”, Circulation; 1997; vol. 96; pp. 3517-3520.
Gust H. Bardy, MD et al., “Truncated Biphasic Pulses for Transthoracic Defibrillation”, Circulation; 1995; vol. 91; pp. 1768-1774.
K. A. Mowrey et al., “Kinetics of Defibrillation Shock-Induced Response: Design Implications for the Optimal Defibrillation Waveform”, Europace; 2002; vol. 4; pp. 27-39.
Charles D. Swerdlow, MD et al., “Application of Models of Defibrillation to Human Defibrillation Data—Implications for Optimizing Implantable Defibrillator Capacitance”, Circulation; 1997; vol. 96; pp. 2813-2822.
Werner Irnich, “How to Program Pulse Duration or Tilt in Implantable Cardioverter Defibrillators”, PACE; 2003; vol. 26, Pt. II; pp. 453-456.

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