Patent ID: 8452422

Claim:
A flexible application catheter device for high-frequency therapy of biological tissue or hollow organs, the device comprising: a flexible shaft tube having a length in an axial direction and comprising at least one lumen inside the flexible shaft tube and having a length in the axial direction, the lumen comprising an inner surface; a head electrode arranged at a distal end of the device; an electric line with a connection for a high-frequency generator; a connecting element between the shaft tube and the electric line; and a traction element which extends in the axial direction in the lumen between the head electrode and the connecting element and which is fixedly connected to the head electrode and to the connecting element and which is configured to transmit external mechanical forces which occur during a treatment and which act on the head electrode and to transmit forces transmitted from the flexible shaft tube, to the connecting element, wherein a cross-sectional area and a tensile strength of the traction element are configured to transmit external mechanical forces exerted during the treatment acting on the head electrode to the connecting element by way of the traction element; the traction element being sized and positioned so that the traction element is spaced with an empty space in a radial direction transverse to the axial direction from the inner surface of the lumen extending from the head electrode to the connecting element, wherein the traction element is electrically conducting and is electrically conductingly connected both to the head electrode and to the connection for the high-frequency generator.