VOLTAGE THRESHOLD ABLATION METHOD AND APPARATUS

摘要

A method and apparatus for treating tissue using an electrosurgical system. The system includes an electrosurgical system having an RF generator (28), a treatment electrode (22) electrically coupled to the RF generator and positioned in contact with target tissue to be treated, and a spark gap switch positioned between the RF generator and the target tissue. The spark gap includes a threshold voltage and is configured to prevent conduction of current from the RF generator to the tissue until the voltage across the spark gap reaches the threshold voltage.