The invention relates to an intracavitary element based on a long, substantially cylindrical body that is joined, at the proximal end thereof, to the cable (2) that connects it to the apparatus, and comprising a grip (3), in the proximal region, that is thicker than the rest of the body and has a flat area (10) on the upper part thereof a straight and cylindrical central region (4) and a distal region (5) that has a bulge (7) on the upper face and is bent in relation to the axial axis of the central region (4), at an angle (a) oscillating between 1 and 90°. The element has one, two or more independent electrodes (6) distributed between the central region (4) and the distal region (5), which are separated by means of pieces (8) of insulating material when they are more than one, and have temperature sensors (9).
