Electrode assembly for a surgical instrument for carrying out an electrothermal coagulation of tissue

摘要

The distal end of the surgical instrument has an electrically conducting front cylinder (10), with a distal point (12) and cylindrical first electrode (2). A tubular external conductor (20) is attached to the proximal end of the front cylinder, and has a cylindrical second electrode (4). An insulator element (50) is between the front cylinder and the external conductor. the electrodes are connected to an alternating current source. DETAILED DESCRTIPTION - The external conductor contains a rod-shaped inner conductor (40) between which and the external conductor is an insulating tube (30). A radial partition (52) between the front cylinder and external conductor leads onto the cylindrical enclosure wall (54) on the outer edge of the partition.