Stepped truncated damped sinusoidal defibrillation waveform

Details Stepped truncated damped sinusoidal defibrillation waveform Stepped truncated damped sinusoidal defibrillation waveform

1997-04-10

1999-06-01

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

607 7, A61N 139

Patent

active

059084421

ABSTRACT:
A method and apparatus for delivering a stepped truncated damped sinusoidal external defibrillation waveform which, when applied through a plurality of electrodes positioned on a patient's torso will produce a desired response in the patient's cardiac cell membranes is provided. Further, the method and apparatus sufficiently approximates a constant current defibrillation shock pulse. The method includes the steps monitoring a patient-dependent electrical parameter and determining a duration based on the parameter determined. First and second charge storage components are then charged. A first truncating switch is then closed to discharge the first charge storage component. After a predetermined delay, a second truncating switch is closed to discharge the second charge storage component. Then, after the duration period that was calculated has expired the switches are opened to truncate the waveform. The computation of discharge duration is made as a function of the desired cardiac membrane response function, a patient model and a defibrillator circuit model.

REFERENCES:
patent: 4168711 (1979-09-01), Cannon, III et al.
patent: 4768512 (1988-09-01), Imran
patent: 5312440 (1994-05-01), Hirschberg et al.
patent: 5391186 (1995-02-01), Kroll et al.
patent: 5397336 (1995-03-01), Hirschberg et al.
patent: 5431686 (1995-07-01), Kroll et al.
patent: 5534015 (1996-07-01), Kroll et al.
patent: 5540723 (1996-07-01), Ideker et al.
patent: 5591211 (1997-01-01), Meltzer
patent: 5593427 (1997-01-01), Gilner et al.
patent: 5601612 (1997-02-01), Gilner et al.
patent: 5607454 (1997-03-01), Cameron et al.
patent: 5643324 (1997-07-01), Persson
patent: 5658319 (1997-08-01), Kroll
The Journal of General Physiology, Rockefeller Institute for Medical Research, vol. 15, pp. 731-755, 1932.
Pacing and Clinical Electrophysiology, Futura Publishing Co., vol. 18, No. 4, pp. 633-758, Apr. 1995.
Journal of Cardiovascular Electrophysiology, Futura Publishing Co., vol. 6, No. 9, Sep. 1995.
Pacing and Clinical Electrophysiology, Futura Publishing Co., vol. 18, No. 3, Part II, pp. 505-631, Mar. 1995.
Pacing and Clinical Electrophysiology, Futura Publishing Co., vol. 19, No. 8, pp. 1141-1272, Aug. 1996.
Pacing and Clinical Electrophysiology, Futura Publishing Co., vol. 17, No. 11, Part I, pp. 1707-1836, Nov. 1994.
The Journal of General Physiology, Rockefeller Institute for Medical Research, vol. 15, pp. 708-729, 1932.
Journal of the American College of Cardiology, American College of Cardiology, vol. 13, No. 1, Jan. 1989.
Pacing and Clinical Electrophysiology, Futura Publishing Co., vol. 16, No. 4, Part I, pp. 693-827, Apr. 1993.
Circulation, American Heart Association, vol. 82, No. 6, pp. 2128-2141, Dec. 1990.
Circulation, American Heart Association, vol. 76, No. 5, pp. 1176-1184, Nov. 1987.
Circulation, American Heart Association, vol. 91, No. 6, pp. 1768-1774, Mar. 1995.
Circulation, American Heart Association, vol. 92, No. 6, pp. 1634-1643, Sep. 1995.
Circulation, American Heart Association, vol. 94, No. 10, pp. 2507-2514, Nov. 1996.

Affiliated with

Also associated with

Rating

Stepped truncated damped sinusoidal defibrillation waveform does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stepped truncated damped sinusoidal defibrillation waveform, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stepped truncated damped sinusoidal defibrillation waveform will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-952008