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Implantable cardiac cardioverter/defibrillator with EMI suppression filter with independent ground connection
Implantable cardiac cardioverter/defibrillator with EMI suppression filter with independent ground connection
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机译：具有独立接地连接的EMI抑制滤波器的植入式心脏心脏复律器/除颤器
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摘要
An implantable defibrillator, which may include cardioversion and pacemaker capabilities, which has EMI filters which are not susceptible to defibrillation shocks and which reduce or eliminate the effects of charging noise on sensing circuits used for continuous confirmation. A first filter capacitor is provided between a sense electrode, which may include pacing capabilities, and a ground reference within a hermetically sealed can containing a pulse/shock generator. A second filter capacitor is provided between a sensing/pacing reference electrode, which may also be a high voltage or shock electrode, and the ground reference. In addition, there is a third filter capacitor between the ground reference and the can. Preferably, the connections of the first, second and third filter capacitors are physically as well as electrically adjacent to each other. The filter capacitors are housed in the can and in or adjacent to a feedthrough assembly which passes through the can. Most preferably, the filter capacitors are discoidal capacitors mounted in or adjacent to the feedthrough.
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