Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
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United States of America Patent
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Jun 19, 2012
Grant Date -
Jun 18, 2009
app pub date -
Feb 25, 2009
filing date -
Jan 24, 2006
priority date (Note) -
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Abstract
An electrosurgical generator is disclosed. The generator includes an RF output stage configured to generate a sinusoidal waveform for a selected electrosurgical mode. The RF output stage includes 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 component and a second parallel inductor-capacitor resonant circuit. The first parallel inductor-capacitor resonant circuit is configured to produce a first half-sinusoidal waveform and the second parallel inductor-capacitor resonant circuit is configured to produce a second half-sinusoidal waveform. The first and second switching components are in a 180 degree out-of-phase relationship and are configured to operate at a predetermined frequency based on a phase-correlated dual drive signal.
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