Method and apparatus for capacitive switching output for implantable cardioverter defibrillator
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United States of America Patent
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Mar 31, 1998
Grant Date -
N/A
app pub date -
May 13, 1996
filing date -
May 13, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An implantable cardioverter defibrillator includes a battery system and a transformer for selectively charging the capacitor system in response to a cardiac dysrhythmia detected by a sensing system. The system also includes a switching control system for selectively discharging the capacitor system through a plurality of implanted electrodes. The capacitor system has a primary capacitor system connected to the transformer to store a high voltage charge of greater than 1500 volts. A second capacitor system is also provided which is selectively connected to the switching control system. The secondary capacitor system delivers a high voltage output of not more than 1500 volts to the electrodes. A means for selectively connecting the primary capacitor system to the secondary capacitor system and for selectively connecting the secondary capacitor system to the switching control system is also provided.
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