Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Reexamination Certificate
2005-12-27
2005-12-27
Schaetzle, Kennedy (Department: 3762)
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
C607S010000
Reexamination Certificate
active
06980856
ABSTRACT:
An external defibrillator/pacer includes an output circuit with four legs arrayed to form an H-bridge. Each leg of the output circuit contains a switch. In a defibrillation mode, pairs of switches in the H-bridge are selectively switched to generate a biphasic defibrillation pulse. Three switches are silicon controlled rectifiers (SCRs). Gate drive circuits are coupled to the SCRs to bias the SCRs with a voltage that allows the SCRs in response to control signals. One switch includes an insulated gate bipolar transistor (IGBT). A gate drive circuit is coupled to the gate of the IGETs to provide a slow turn-on and a fast turn-off of the IGBT. In a pacing mode, a bypass circuit or current source circuit is used to provide a current path bypassing an SCR switch, which cannot be triggered by the relatively low current of pacing pulses.
REFERENCES:
patent: 4402322 (1983-09-01), Duggan
patent: 4693253 (1987-09-01), Adams
patent: 4735206 (1988-04-01), Hewson
patent: 4800883 (1989-01-01), Winstrom
patent: 4821723 (1989-04-01), Baker, Jr. et al.
patent: 4850357 (1989-07-01), Bach, Jr.
patent: 5048521 (1991-09-01), Pless et al.
patent: 5083562 (1992-01-01), de Coriolis et al.
patent: 5099844 (1992-03-01), Faupel
patent: 5358512 (1994-10-01), Hoegnelid et al.
patent: 5376103 (1994-12-01), Anderson et al.
patent: 5431682 (1995-07-01), Hedberg
patent: 5431684 (1995-07-01), Archer et al.
patent: 5431686 (1995-07-01), Kroll et al.
patent: 5441518 (1995-08-01), Adams et al.
patent: 5468254 (1995-11-01), Hahn et al.
patent: 5470341 (1995-11-01), Kuehn et al.
patent: 5507781 (1996-04-01), Kroll et al.
patent: 5514160 (1996-05-01), Kroll et al.
patent: 5522853 (1996-06-01), Kroll
patent: 5531765 (1996-07-01), Pless
patent: 5534015 (1996-07-01), Kroll et al.
patent: 5591209 (1997-01-01), Kroll
patent: 5591210 (1997-01-01), Kroll et al.
patent: 5591211 (1997-01-01), Meltzer
patent: 5591213 (1997-01-01), Morgan
patent: 5593427 (1997-01-01), Gliner et al.
patent: 5601608 (1997-02-01), Mouchawar
patent: 5601612 (1997-02-01), Gliner et al.
patent: 5607454 (1997-03-01), Cameron et al.
patent: 5620465 (1997-04-01), Olson et al.
patent: 5713925 (1998-02-01), Sullivan et al.
patent: 0 553 864 (1993-08-01), None
patent: WO 93/16759 (1993-09-01), None
patent: WO 94/27674 (1994-12-01), None
patent: WO 95/05215 (1995-02-01), None
patent: WO 95/09673 (1995-04-01), None
patent: WO 98/39060 (1998-09-01), None
patent: WO 98/39061 (1998-09-01), None
Bardy et al., “Multicenter Comparison of Truncated Biphasic Shocks and Standard Damped Sine Wave Monophasic Shocks for Transthoracic Ventricular Defibrillation,” Circulation, vol. 94, No. 10, Nov. 15, 1996, pp. 2507-2514.
Bardy et al., “Truncated Biphasic Pulses for Transthoracic Defibrillation,” Circulation, vol. 91, No. 6, Mar. 15, 1995, pp. 1768-1774.
Cummins et al., Overview, “Ventricular Fibrillation Automatic External Defibrillators, and the United States Food and Drug Administration: Confrontation Without Comprehension,” Annals of Emergency Medicine, vol. 26, No. 5, Nov. 1995, pp. 621-631.
Feeser et al., Abstract, “Strength-Duration and Probability of Success Curves for Defibrillation with Biphasic Waveforms,” Circulation, vol. 82, 1990, p. 2128.
Gliner et al., “Transthoracic Defibrillation of Swine with Monophasic and Biphasic Waveforms,” Circulation, vol. 92, No. 6, Sep. 15, 1995, pp. 1634-1643.
Kroll, M.W., “A Minimal Model of the Single Capacitor Biphasic Defibrillation Waveform,” PACE, vol. 17, Nov. 1994, Part 1, pp. 1782-1792.
Tang et al., Abstract, “Ventricular Defibrillation Using Biphasic Waveforms: The Importance of Phasic Duration,”Journal of American College of Cardiology, vol. 13, 1989, pp. 207.
Walcott et al., “Choosing the Optimal Monophasic and Biphasic Waveforms for Ventricular Defibrillation,”Journal of Cardiolvascular Electrophysiology, vol. 6, No. 9, Sep. 1995, pp. 737-750.
Borschowa Lawrence A.
Nova Richard C.
Sullivan Joseph L.
Physio-Control Manufacturing Corporation
Redman Mary Y.
Schaetzle Kennedy
LandOfFree
Circuit for performing external pacing and biphasic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit for performing external pacing and biphasic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for performing external pacing and biphasic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3491027