초록 ▼

Apparatus and method for selecting from a pair of capacitor banks for delivery of positive and negative polarity portions of a biphasic defibrillator pulse with a selector switch circuit for each capacitor bank, the circuit including a solid state phase selector switch preferably made up of a series

Apparatus and method for selecting from a pair of capacitor banks for delivery of positive and negative polarity portions of a biphasic defibrillator pulse with a selector switch circuit for each capacitor bank, the circuit including a solid state phase selector switch preferably made up of a series connected plurality of IGBT's and each phase selector switch having a phase selector driver and select phase control for turning the phase selector switch ON and OFF when desired to start and truncate selected portions of the biphasic defibrillation pulse.

대표청구항 ▼

[ What is claimed is:] [34.] An improved external defibrillator for connection to a pair of electrodes, the improvement comprising a pair of separate capacitor banks for delivering biphasic high voltage defibrillation pulses to electrodes and a biphasic selector switch having a pair of solid state s

[ What is claimed is:] [34.] An improved external defibrillator for connection to a pair of electrodes, the improvement comprising a pair of separate capacitor banks for delivering biphasic high voltage defibrillation pulses to electrodes and a biphasic selector switch having a pair of solid state switching means wherein one of the pair of switching means is connected between one of the capacitor banks and the electrodes for selectively providing and interrupting a path therebetween and the other of the pair of switching means is connected between the other capacitor bank and the electrodes, wherein each of the solid state switch means comprises an isolated driver to selectively turn the solid state switch ON and OFF.