| 摘要 |
This invention is an apparatus for providing and delivery biphasic waveform defibrillation pulse. One embodiment includes a source (12) for generating a train of high frequency pulses coupled through a pulse transformer (14), a high speed diode (18) connected to the pulse transformer, a filter capacitor (20) connected to the high speed diode, acting as a low pass filter for the train of pulses, and a plurality of solid state switches (24, 26) for selectively coupling and decoupling the voltage across the filter capacitor to one of a plurality of capacitor banks (40, 42) which make-up the biphasic high voltage defibrillation pulse supply. Another embodiment is an apparatus for selecting from a pair of capacitor banks for delivery of positive and negative polarity portions of a biphasic defibrillator pulse. A further embodiment is a solid state patient isolator circuit capable of conducting bipolar portions of a biphasic defibrillation pulse when the isolator circuit is ON, and further capable of isolating circuitry upstream or downstream of the patient isolator when the isolator circuit is OFF. |
