Instrument and System for Ablation

A method for tissue ablation with an instrument (11) comprising:

• a first gas supply line (35a) with a first electrode (41a) that is arranged at least partially in said line, and
• a second gas supply line (35b) with a second electrode (41b) that is arranged at least partially in said line,
• wherein the first gas supply line (35a) and the second gas supply line (35b) are arranged relative to each other in such a manner that a distal end (36a) of the first gas supply line (35a) forms an acute angle (α) with a distal end (36b) of the second gas supply line (35b), so that the first gas supply (35a) and the second gas supply line (35b) diverge in distal direction at their distal ends (36a,b),
• wherein, between the distal end (36a) of the first gas supply line (35a) and the distal end (36b) of the second gas supply line (35b), there is provided a free space (45) that allows a user to view between the distal ends (36a,b) of the gas supply lines (35a,b) through to a region of effect of the instrument (11) in front of the distal ends (36a,b) of the gas supply lines (35a,b),
• the method comprising:
• moving the instrument (10) along a path, transversely with respect to a line connecting the first and second electrodes (41a,b), at a distance from tissue to be ablated.