Electrosurgical HF generator
AssigneeErbe Elek Tromedizin GmbH
InventorErich Werner
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Abstract
An electrosurgical high frequency (HF) generator for cutting and/or coagulating biological tissue. The generator comprises a power supply and a generator stage for exciting an HF oscillation signal in an output filter comprising a parallel resonant circuit coupled to a series resonant circuit, to which at least one electrode is connected. The generator has an improved efficiency level if the series resonant circuit has a resonance frequency that is higher than the resonance frequency of the parallel resonant circuit.
Claims15
An electrosurgical high frequency (HF) generator for cutting and/or coagulating biological tissue, said generator comprising:
- a power supply;
- and
- a generator stage for exciting an HF oscillation signal in an output filter comprising a parallel resonant circuit coupled to a series resonant circuit, to which at least one two electrodes is are connected,
- wherein the series resonant circuit has a resonance frequency that is higher than a resonance frequency of the parallel resonant circuit, and
- wherein the resonance frequency of the series resonant circuit is lower than a frequency of the HF signal occurring during a short-circuit of the at least two electrodes.
Dependencies are inferred from the claim text.