The invention relates to an anti-carbonization device (1) for preventing carbonization of tissue during plasma-coagulation by means of a suitable surgical instrument (3), said surgical instrument (3) comprises an inlet for an oxidation agent (7), an inlet for a gas (5), and an electrode (9) for producing plasma, and said anti-carbonization device (1) enables a gas-oxidant mixture to be prepared for producing gas-oxidant plasma.
