Abstract: The invention concerns an electrode arrangement for a surgical instrument for the electrothermal coagulation of human or animal tissue, comprising an elongate carrier, at least two electrodes which extend in the longitudinal direction of the carrier and which are connectable to an external ac voltage, and a plurality of self-supporting metal bar profile members which extend in the longitudinal direction of the carrier and which are connected together by means of one or more insulating spacer elements and form the electrodes. It is achieved in that at least one bar profile member is in the form of a hollow profile member or a solid profile member.

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 high frequency current application apparatus for the thermal sclerosing of body tissue, comprising a high frequency generator to which there are connected at least two electrodes of which at least one electrode is to be introduced into body tissue, and a measuring and calculating device which is adapted to ascertain the impedance or the ohmic resistance between the two electrodes between which a respective therapeutic high frequency current flows, and a control device connected to the measuring and calculating device for varying the output power. During a high frequency current application the measuring and calculating device forms the first derivative from the characteristic in respect of time of the impedance or ohmic resistance.

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: There is provided a surgical instrument for electrothermal coagulation of tissue, which includes a front cylinder at the distal end of the instrument having a distal tip, an elongate carrier, and two spaced cylindrical or strip-shaped electrodes at or on the carrier which are connectable to an HF-ac voltage source.

Abstract: The invention concerns a bipolar coagulation probe (10) having an electrode tip (14) which has an end face (16) in which a pole (17) of a first electrode (18) and a pole (19) of a second electrode (20) are integrated. In accordance with the invention the bipolar coagulation probe (10) includes a temperature control unit (26) with a temperature control medium for temperature control of the end face (16).

Abstract: A method and apparatus are taught in which tonsils are be treated by using an applicator in a bipolar design. This means that no neutral electrode (i.e. no separate return electrode) is necessary.

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: A hollow surgical probe for the minimally invasive removal of tissue has an elongate hollow body and an electrical conductive ring-shaped or loop-shaped cutting element. The elongate hollow body includes two segments of which at least one encloses a cavity for receiving tissue and which can be separated from each other and which are movably relative to each other in such a way that an opening between the segments is to be selectively opened or closed. The electrically conductive ring-shaped or loop-shaped cutting element is movable relative to at least one of the segments and is adapted for electrosurgically cutting out tissue which has penetrated into the opening between the hollow body segments.

Abstract: Provided is a high frequency application apparatus comprising a high frequency generator 1, a probe arrangement 3 which is connected to the high frequency generator 1 and which includes at least two electrodes 8, 9, and at least two lines 11 which connect the electrodes 8, 9 to the high frequency generator 1, which is distinguished in that the lines 11 are combined together in a common cable (5). In that respect the term probes is used to denote not only probes which are suitable for introduction into the body such as for example catheters or electrode needles but also those which are to be fitted externally to the body.

Abstract: The invention relates to an electrosurgical probe, in particular for electrocoagulation, comprising a handle and a shaft, the shaft being joined to the handle and having at least two electrodes offset from each other in the axial direction of the shaft, with one electrode closer to the handle forming a proximal electrode and one electrode more distant from the handle forming a distal electrode, wherein said electrodes each form an electrically conductive outer surface of the shaft and are electrically insulated from each other by an insulator, the outer diameter of the two electrodes and the outer diameter of the insulator being approximately the same, wherein a bite piece made of a biocompatible and preferably soft material is provided near the handle on the outside of the shaft in the region of the proximal electrode.

Abstract: The application apparatus according to the invention for applying a high frequency current for thermal sclerosis of body tissue, includes an electrode array (7) with at least three active electrodes (1-6) which are electrically conductingly connected to the body tissue, a high frequency generator (17) which can be individually electrically connected to the active electrodes (1-6) for producing a high frequency voltage, and a measuring device (13) for measuring the impedance of the tissue between the active electrodes (1-6). In addition the application apparatus includes a selector device (15) for selecting a sub-array (19) including at least two active electrodes (5, 6) from the electrode array (7), the selection being effected on the basis of the measured impedance.

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 disclosure concerns electrically operated medical products, which are to be brought electrically into operation by being switched on or in conjunction with an electrical power source, including a reuse blocking device that is connectable to the power source and is designed in such a way that when the product is brought into electrical operation for the first time, the reuse blocking device is so initialized and is so altered in its state that operation of the medical product is possible as long as the surgical instrument is connected to the power source or the power source is switched on and the reuse blocking system prevents renewed use after disconnection from the power source or only allows a number of use cycles, which is predetermined by the manufacturer.

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: A medical device assembly for cutting body tissue by means of electrotomy, includes a generator for a high frequency alternating current which can be delivered by way of a pole and an opposite pole, wherein each pole is connected to at least one respective output terminal of the generator; a gripping instrument with two gripping arms which each have at least one respective gripping surface and which are connected together in such a way that the gripping surfaces are movable towards each other, wherein the gripping surface is at least partially electrically conductive and each is individually electrically connected to a respective terminal or they are electrically connected to a common terminal for an electrical supply line; and a cutting instrument which has a handle and a cutting electrode, wherein in operation the cutting electrode is connected to a pole of the generator and both gripping surfaces are connected to the opposite pole of the generator.

Abstract: An electrode arrangement is provided having at least one electrode for insertion into a human or animal body for electrothermal treatment of the body. The electrode is situated on an electrode support and is connected to an alternating current source via a supply lead and to a temperature stabilizer device for influencing the effective temperature profile in a treatment area. The electrode support and the electrode, or electrodes, are constructed for direct insertion into body tissue, said insertion being channel forming. The temperature stabilizer device has a timed heating device.

Abstract: There is provided a surgical instrument for electrothermal coagulation of tissue, which includes a front cylinder at the distal end of the instrument having a distal tip, an elongate carrier, and two spaced cylindrical or strip-shaped electrodes at or on the carrier which are connectable to an HF-ac voltage source.

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.