Patent ID: 8613743

Claim:
A system comprising: a neutral electrode; and a high-frequency surgical testing device for testing the neutral electrode during treatment of a biological tissue with a high-frequency current, wherein the neutral electrode comprises: at least one first electrically conductive electrode segment having a first cable for connecting to a high-frequency generator; and a second electrically conductive electrode segment having a second cable for connecting to a high-frequency generator, wherein the first and second electrically conductive electrode segments can be brought into contact with biological tissue, and wherein the testing device comprises: an encoding element; and a measurement device, wherein the encoding element is directly connected to the first electrode segment and to the second electrode segment and located between the first and second electrode segments of the neutral electrode and includes a coding for describing the type of the neutral electrode, and wherein the measurement device further comprises a source for a test current and a filter element, wherein the measurement device detects the coding of the encoding element to identify the type of the neutral electrode, and the filter element enables decoupling of a working current and the test current, and wherein the measurement device is arranged between the first cable and the second cable such that the test current flows through the encoding element via the first cable and the second cable.