Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1995-06-07
1998-05-12
Getzow, Scott M.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 1375
Patent
active
057499101
ABSTRACT:
An implantable cardioverter defibrillator capable of subcutaneous positioning within a patient delivers at least one electrical cardioversion/defibrillation countershocks to the heart of the patient. The implantable cardioverter defibrillator includes a housing, circuitry positioned within the housing to control delivery of the countershocks, and an energy source coupled with the circuitry to provide electrical energy to a capacitor in the circuitry that stores the electrical energy for delivery of the countershocks. Because the circuitry is susceptible to undesirable electromagnetic coupling effects of origin external to the circuitry, particularly the capacitive coupling effects between the circuitry and the housing of the device when at least a portion of the housing is utilized as an electrode, the implantable cardioverter defibrillator also includes a conductive shield, disposed between the housing and the circuitry, to shield the circuitry against such undesired coupling effects.
REFERENCES:
patent: 4774950 (1988-10-01), Cohen
patent: 4947235 (1990-08-01), Roth et al.
patent: 5312442 (1994-05-01), O'Phelan
patent: 5370669 (1994-12-01), Daglow et al.
patent: 5405363 (1995-04-01), Kroll et al.
Brumwell Dennis A.
Kroll Mark W.
Nelson Randall S.
Perttu Joseph S.
Angeion Corporation
Getzow Scott M.
Pedersen Brad
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