| 摘要 |
An implantable cardiac defibrillator is provided having a battery, capacitive means, means coupled to the battery for charging the capacitive means, and means for coupling the capacitive means to a patient's heart, for delivering a high voltage shock to the heart. Current leakage from the capacitive means is detected. If the current leakage exceeds a predetermined amount, charging of the capacitive means is terminated. In one embodiment, voltage at the patient is directly sensed. In another embodiment, the voltage across a resistance located in series with the patient is sensed. In another embodiment, a test charge is provided for a short interval. The capacitive means is sensed to determine excessive loss of energy after the test charge. If excessive loss of energy is determined, charging is terminated.
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