DEFIBRILLATOR WITH SPECIFIC PULSE SHAPE AND ENERGY

摘要

A defibrillator which may be portable and which may be used without relying on electrical supply mains. The apparatus comprises a capacitor, and inductance and a pair of electrodes whereby the capacitor is discharged through a patient and the selection of the energy level, the capacitor and the inductance being such that the voltage wave-form of the discharge pulse has a duration of between ten and fifteen milliseconds, a peak value of not more than 4 kilovolts and a minimum rise time to that peak of 1,000 microseconds.