Method and apparatus for polarity reversal of consecutive defibr

Details Method and apparatus for polarity reversal of consecutive defibr Method and apparatus for polarity reversal of consecutive defibr

1996-03-04

1998-02-17

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 139

Patent

active

057187185

ABSTRACT:
A method and apparatus for controlling an implantable cardioverter defibrillator utilizes a back-biasing precharge circuit to precondition the heart before delivery of a biphasic electrical countershock. The back-biasing precharge circuit delivers a low voltage pulse to the implantable defibrillation electrodes that is opposite to the polarity of the initial phase of the biphasic countershock. In the event of a continuing cardiac arrhythmia which is not successfully converted by a single countershock, subsequent countershocks are delivered having alternating polarities from the preceding countershock such that both the polarity of the back-biasing pulse and the biphasic countershock are reversed as compared to the immediately preceeding countershock.

REFERENCES:
patent: 4637397 (1987-01-01), Jones et al.
patent: 4708145 (1987-11-01), Tacker, Jr. et al.
patent: 4727877 (1988-03-01), Kallok
patent: 4800883 (1989-01-01), Winstrom
patent: 4830006 (1989-05-01), Haluska
patent: 4850357 (1989-07-01), Bach, Jr.
patent: 4953551 (1990-09-01), Mehra et al.
patent: 5052407 (1991-10-01), Hauser et al.
patent: 5107834 (1992-04-01), Ideker et al.
patent: 5133353 (1992-07-01), Hauser
patent: 5163427 (1992-11-01), Keimel
patent: 5184616 (1993-02-01), Weiss
patent: 5199429 (1993-04-01), Kroll
patent: 5301503 (1994-04-01), Martinelli
patent: 5314448 (1994-05-01), Kroll et al.
patent: 5334219 (1994-08-01), Kroll
patent: 5336484 (1994-08-01), Kroll
patent: 5346506 (1994-09-01), Mower et al.
patent: 5385574 (1995-01-01), Hauser et al.
patent: 5395394 (1995-03-01), Cameron
patent: 5531764 (1996-07-01), Adams et al.
U.S. application No. 08/523,718, Kroll et al., filed Sep. 5, 1995.
Electrode Polarity is an Important Determinant of Defibrillation Efficacy Using a Nonthroactomy System, Thakur et. al, PACE, vol. 17, May 1994, Part I, pp. 919-923.
Effect of Shock Polarity on Ventricular Defibrillation Threshold Using a Transvenous Lead System, Strickberger et al, JACC, vol. 24, No. 4, Oct. 1994, pp. 1069-1072.
Transvenous-Subcutaneous Defibrillation Leads: Effect of Transvenous Electrode Polarity on Defibrillation Threshold, Block et al, J of CE, vol. 5, No. 11, Nov. 1994, pp. 914-918.
The effect of polarity reversal on biphasic defibrillation threshold with an integrated transvenous lead system, Shorofksy et al, Circulation, vol. 90, No. 4, Part 2, Oct. 1994, p. 1224.
Medtronic.RTM. PCD.TM. Device Tachyarrhythmia Control System Reference Guide, Apr. 1992.
Ventritex.RTM. Cadence.TM. Tiered Therapy Defibrillator System Cadence Model V-100 and Cadence Programer, Preliminary Physician's Manual, Oct. 1990.
Ventak.RTM. PRx.TM. 1700/1705 Physician's Manual, Cardiac Pacemakers, inc.

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