Patent ID: 8357151

Claim:
An ablation energy generator comprising: an energy source for outputting ablation energy via an ablation probe; control circuitry comprising a RF oscillator operatively coupled to a pulse modulator and an amplitude modulator, the pulse modulator and the amplitude modulator operatively coupled to a controller; a physiological sensor comprising one of an impedance sensor and a temperature sensor carried by the ablation probe, the physiological sensor operatively coupled to the controller; wherein the control circuitry is configured to deliver a first plurality of ablation pulses, each pulse in the first plurality of ablation pulses having an equal amplitude and progressively smaller pulse width, followed by a second plurality of ablation pulses, each pulse in the second plurality of ablation pulses having an equal amplitude that is lower than the amplitude of the first plurality of ablation pulses and progressively smaller pulse width; and wherein the duration of each pulse of the first and second plurality of ablation pulses is based on threshold values contained in the controller.