Patent ID: 6198967
Filing Date: 2001-03-06
Classification: A61N

Abstract:
An external defibrillation device for administering a truncated exponential waveform transchest to a cardiac patient, the waveform being variable as a function of patient parameters, patient parameters varying during delivery of the waveform, the device comprising:a programmable processor for controlling the device;means for dividing said waveform into discrete time slices being connected to the processor;means for measuring voltage and current of said waveform at said time slice being connected to the processor;means for calculating variable resistance of the waveform at each of said time slices being connected to the processor using the measured voltage and current;means for generating a dynamic waveform tilt equation related to the calculated variable resistance being connected to the processor; andmeans for generating said waveform for delivery to the cardiac patient being connected to the processor, said waveform being responsive to the generated dynamic waveform tilt equation.