Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1994-08-18
1996-04-16
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 74, 607 5, A61N 139
Patent
active
055077811
ABSTRACT:
The present invention uses switches to set the topology and polarity of a circuit that includes capacitors to deliver an electric pulse to a heart during a defibrillation procedure. The waveform of the electric pulse is biphasic, in that it is a positive portion of the pulse followed by a negative portion of the pulse. The topology and polarity of the circuit are utilized to produce a waveform that approximates the ideal waveform for the specific situation. The circuit provides for combinations of capacitors variously in series and in parallel and changing the topology and polarity of the circuit during discharge of the capacitors.
REFERENCES:
patent: 3093136 (1963-06-01), Lohr
patent: 3924641 (1975-12-01), Weiss
patent: 4800883 (1989-01-01), Winstrom
patent: 4850357 (1989-07-01), Bach, Jr.
patent: 5083562 (1992-01-01), de Coriolis et al.
patent: 5199429 (1993-04-01), Kroll et al.
patent: 5411525 (1995-05-01), Swanson et al.
Adams Theodore P.
Brumwell Dennis A.
Kroll Mark W.
Angeion Corporation
Kamm William E.
Schaetzle Kennedy J.
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