An apparatus for coagulating tissue, including a gas-delivering device for delivering a plasma comprised of an ionized inert gas from the outlet of the gas-delivering device, an electrode adapted to supply a high-frequency current that projects out of the gas-delivering device and a guiding device disposed at a distal end of the electrode. The relative configuration of the outlet of the gas-delivering device and the guiding device are such that the plasma (and an electric arc) can be directed in any direction 360° with respect to the outlet of the gas-delivering device. The plasma is directed along a path of least electric resistance, thus causing the plasma to be directed to a tissue to be treated, regardless of a position of the tissue relative to a rotational position of the outlet of the gas-delivering device.
