US Patent 7426415 Neutral electrode for use in HF surgery

In previously known neutral electrodes which are used in HF surgery, at least some portions comprise electrically conductive, stretchable, and flexible areas made of textile material, these areas being brought into contact with a body section of a patient. According to the invention, such an area is embodied as a stocking, tube, or similar anatomically shaped thromboembolism-preventing envelope, whereby secure contact of the neutral electrode is ensured without requiring any additional device.