Abstract: A catheter for the high-frequency therapy of body lumens has a flexible shaft tube of preferably biocompatible plastic material, which is connected to a distal end piece in the region of the distal end of the catheter. A proximal part of the distal end piece, that projects into the distal part of the shaft tube, forms a damping connection to the distal end of the shaft tube, which is secured by a distal electrode which is drawn on to the external peripheral surface of the shaft tube, by the distal electrode exerting a radially inwardly acting clamping force on the damping connection.

Abstract: The invention concerns a flexible application device (1) for the high-frequency therapy of biological tissue or hollow organs, including a tubular high-frequency catheter (5) with a flexible shaft tube (6) having at least one lumen passing therethrough, a head electrode (2) arranged at the distal end of the high-frequency catheter (5), an electric line (9) with a connection (20) for a high-frequency generator (11), and a connecting element (8) arranged at the proximal end of the shaft tube (6) between the shaft tube and the line (9).

Abstract: The invention concerns a flexible application device including a tubular high-frequency catheter with a flexible shaft tube having at least one lumen passing therethrough, a head electrode arranged at the distal end of the catheter, an electric line with a connection for a generator ,and a connecting element arranged at the proximal end of the shaft tube between the shaft tube and the line. An electrically conducting traction element extends in the lumen between the head electrode and the connecting element and is fixedly connected to the head electrode on the one hand and the connecting element on the other hand in such a way and which is of such a tensile strength that all external forces which occur during a treatment and which act on the catheter can be transmitted to the connecting element by way of the head electrode and the traction element.

Abstract: The invention concerns a surgical probe having electrodes for use in tissue ablation or coagulation. The probe has hollow spaces therein for delivering a cooling fluid to the probe. The probe has a handle and shaft and two axially-spaced electrodes on the surface of the shaft, separated from each other by an insulator.

Abstract: The disclosure provides a probe arrangement having a distal probe tip and a proximal hand portion for the electrothermal coagulation of tissue. The probe arrangement has at least a first and a second electrode in the region of the distal probe tip. An inner conductor of the probe arrangement extends from the distal probe tip to the proximal hand portion and contacts the first electrode in the distal probe tip. An outer conductor of the probe arrangement extends from the distal probe tip to the proximal hand portion and serves to electrically contact the second electrode in the distal probe tip. The inner and outer conductors of the probe arrangement are electrically insulated from each other. Furthermore the inner conductor is selected in such a way that the flexural stiffness of the probe arrangement is increased between the probe tip and the hand portion.

Abstract: The application arrangement according to the invention for applying a high frequency current for thermal sclerosing of body tissue, includes: an electrode needle 1 having an electrically conducting shaft 3, at least one insulating casing body 7 which surrounds the electrically conducting shaft 3 and which is displaceable relative to the shaft 3 and which has a distal end from which the shaft 3 can be extended, and at least one trocar 5 having a portion intended to be introduced into body tissue, a portion 11 intended to remain outside the body tissue, and a lumen 13 which extends through both portions and through which the shaft 3 of the electrode needle 1 is to be passed through the trocar 5.

Abstract: The application arrangement according to the invention for applying a high frequency current for thermal sclerosing of body tissue, includes: an electrode needle 1 having an electrically conducting shaft 3, at least one insulating casing body 7 which surrounds the electrically conducting shaft 3 and which is displaceable relative to the shaft 3 and which has a distal end from which the shaft 3 can be extended, and at least one trocar 5 having a portion intended to be introduced into body tissue, a portion 11 intended to remain outside the body tissue, and a lumen 13 which extends through both portions and through which the shaft 3 of the electrode needle 1 is to be passed through the trocar 5.

Abstract: The invention concerns a flexible application device (1) for the high-frequency therapy of biological tissue or hollow organs, including a tubular high-frequency catheter (5) with a flexible shaft tube (6) having at least one lumen passing therethrough, a head electrode (2) arranged at the distal end of the high-frequency catheter (5), an electric line (9) with a connection (20) for a high-frequency generator (11), and a connecting element (8) arranged at the proximal end of the shaft tube (6) between the shaft tube and the line (9).

Abstract: A catheter for the high-frequency therapy of body lumens has a flexible shaft tube (16) of preferably biocompatible plastic material, which is connected to a distal end portion in the region of the distal end of the catheter. A proximal part (14.p) of the distal end portion (14), that projects into the distal part of the shaft tube (16), forms a clamping connection to the distal end of the shaft tube (16), which is secured by a distal electrode (18) which is drawn on to the external peripheral surface of the shaft tube, by the distal electrode exerting a radially inwardly acting clamping force on the clamping connection.

Abstract: The invention relates to a surgical probe comprising a handle and a shaft that is connected to the handle, and two axially interspaced electrodes, the electrode closer to the handle forming a proximal electrode and the other electrode further from the handle forming a distal electrode, said electrodes respectively forming an outer surface of the shaft and being separated by an insulator. The outer diameter of the two electrodes and the outer diameter of the insulator are approximately the same and the shaft has a fluidic passage for a cooling fluid, which extends inside the shaft, from the handle to the distal electrode. The inventive surgical probe is characterised in that the shaft comprises a single-component hollow body that is connected to the handle, forms the distal electrode, and carries the insulator, the proximal electrode and an insulation layer arranged in the radial direction between the hollow body and the proximal electrode.

Abstract: The electrode needle according to the invention has a shaft 4 and at least one active electrode 7 and is distinguished in that the shaft 4 includes a nuclear magnetic resonance-active marker element 15 spatially associated with the active electrode 7. The nuclear magnetic resonance-active marker element can contain ferromagnetic material such as for example iron, cobalt, nickel or steel.

Abstract: The application arrangement according to the invention for applying a high frequency current for thermal sclerosing of body tissue, includes: an electrode needle 1 having an electrically conducting shaft 3, at least one insulating casing body 7 which surrounds the electrically conducting shaft 3 and which is displaceable relative to the shaft 3 and which has a distal end from which the shaft 3 can be extended, and at least one trocar 5 having a portion intended to be introduced into body tissue, a portion 11 intended to remain outside the body tissue, and a lumen 13 which extends through both portions and through which the shaft 3 of the electrode needle 1 is to be passed through the trocar 5.

Abstract: The disclosure provides a probe arrangement having a distal probe tip and a proximal hand portion for the electrothermal coagulation of tissue. The probe arrangement has at least a first and a second electrode in the region of the distal probe tip. An inner conductor of the probe arrangement extends from the distal probe tip to the proximal hand portion and contacts the first electrode in the distal probe tip. An outer conductor of the probe arrangement extends from the distal probe tip to the proximal hand portion and serves to electrically contact the second electrode in the distal probe tip. The inner and outer conductors of the probe arrangement are electrically insulated from each other. Furthermore the inner conductor is selected in such a way that the flexural stiffness of the probe arrangement is increased between the probe tip and the hand portion.