Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1996-03-12
1997-07-08
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 36, 128901, A61N 139
Patent
active
056455720
ABSTRACT:
The present invention is a pectorally implantable defibrillation system for delivering at least one electrical cardioversion/defibrillation countershock. The system has a housing designed to be implanted in a human patient, wherein the housing has an outer shell and an inner cavity. Pulse generating circuitry is positioned within the cavity for generating the at least one countershock. Circuitry is also positioned within the cavity to control delivery of the at least one countershock. At least one surface of the outer shell is electrically conductive to form an electrode for the system. Because of the close proximity between the housing electrode and the circuitry positioned within the housing, the circuitry is susceptible to undesired capacitive coupling effects. To reduce the capacitive coupling effects, a slew rate limiting circuit is connected between the pulse generating circuitry and the electrode formed on the housing.
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Serial No. 08/486,759 filed Jun. 7, 1995 Brumwell et al.
Kroll Mark W.
Perttu Joseph S.
Angeion Corporation
Kamm William E.
Pedersen Brad D.
Schaetzle Kennedy J.
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