Patent ID: 7513896

Claim:
An electrosurgical generator comprising: a selection module configured to transmit control signals which adjusts the electrosurgical generator to produce sinusoidal waveforms suitable for the at least one electrosurgical mode; an RF output stage which generates sinusoidal waveforms for at least one electrosurgical mode, the RF output stage connected to a DC power supply including first and second connections, the first connection including a first switching component and a first parallel inductor-capacitor resonant circuit and the second connection including a second switching components and a second parallel inductor-capacitor resonant circuit, the first and second switching components being configured to open and close at a predetermined frequency based on a phase-correlated dual drive signal emitted by a driver and are in a 180 degree out-of-phase relationship, the first parallel inductor-capacitor resonant circuit being configured to produce a first half-sinusoidal waveform and the second parallel inductor-capacitor resonant circuit being configured to produce a second half-sinusoidal waveform, the RF output stage including: a transformer having a primary winding and a secondary winding and a series inductor-capacitor resonant circuit, the series inductor-capacitor resonant circuit and the transformer configured to generate a sinusoidal waveform; a switching module which, in response to the control signals, adjusts the first and second half-sinusoidal waveforms thereby producing the sinusoidal waveforms suitable for the at least one electrosurgical mode.