Electrosurgery apparatus, in particular for ablation of a tissue mass from the body of a human or animal patient

An electrosurgical apparatus for ablation of a tissue mass from the body of a human or animal patient, said apparatus comprising:

• a generator system configured to generate a radio-frequency electric signal, and
• a handpiece configured to be gripped by an operator and comprising an end fitted with a single active electrode electrically connected to said generator system;
• said signal being capable of polarizing said active electrode so as to generate a glow plasma discharge between said active electrode and said tissue mass when said active electrode is in the proximity of said tissue mass;
• wherein power of said electric signal is lower than or equal to 1 W, and
• said plasma discharge occurs in the atmosphere without propagation of electric current through the body of said patient;
• and
• said generator system is adapted to generate an electric signal having the following parameters:
• a peak-to-peak voltage of 2000 V,
• a current intensity lower than or equal to 0.000 f A,
• a frequency between 50 kHz and 166 kHz, and
• a duty cycle duration between 20 μs,
• wherein said plasma discharge occurs without closing through said body, said apparatus being provided without a return electrode and configured to be free of conveying an inter gas or a saline solution exiting said handpiece.