The invention relates to an electrosurgical instrument for introducing a guide sleeve into a bodily lumen, in particular into a vascular system of the human lung. The invention also relates to a method for the ablation of human body tissue using high frequency voltage. The invention further relates to a use of an electrosurgical instrument for introducing into a bodily lumen. The electrosurgical instrument, according to the invention, for introducing into a bodily lumen, comprises a first applicator having at least one first electrode, and a second applicator having at least one second electrode, wherein the first applicator and the second applicator are designed in such a way that they can be positioned independently of one another in the bodily lumen.
