Celon Ag Medical Instruments

Celon Ag

Olympus Winter Ibe Gmbh

Thomas Stein

Kai Desinger

Gerhard J Muller

André Roggan

Markus Fay

Wolfgang Kühne

Thomas Prezewowsky

Rainer Rothe

Thomas Fricke

Thomas Prezewovsky

Disclosed is a high-frequency surgical appliance for cutting and/or coagulating biological tissue, having a high-frequency generator designed to produce a high-frequency alternating current during operation, and also a method for operating a high-frequency surgical appliance that involves a high-frequency alternating current produced by means of a high-frequency generator for of cutting and/or coagulating biological tissue. The high-frequency surgical appliance according to the invention has a power setting device that is arranged and designed to set or limit an output power of the high-frequency surgical appliance to a power value selected by a user. In addition, the high-frequency surgical appliance according to the invention has a spark control device that is arranged and designed to set or limit a spark voltage to a setpoint spark value, the spark control device also being designed to ascertain the setpoint spark value on the basis of the power value selected by a user.

High-frequency surgical equipment and method for operating such an equipment

The invention concerns a flexible application device () for the high-frequency therapy of biological tissue or hollow organs, 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 high-frequency catheter (), an electric line () with a connection () for a high-frequency 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 high-frequency catheter () can be transmitted to the connecting element () by way of the head electrode () and the traction element ().

Flexible application device for the high-frequency treatment of biological tissue

A high frequency current application apparatus for thermal sclerosing of body tissue, comprising a high frequency generator connected to at least two electrodes, one of which is to be introduced into body tissue. The apparatus includes a measuring and calculating device adapted to ascertain impedance (or ohmic resistance) between the two electrodes between which a respective therapeutic high frequency current flows. A control device is connected to the measuring and calculating device for varying the output power. During high frequency current application the measuring and calculating device forms the first derivative with respect of time of the impedance. The control device reduces output power when that derivative exceeds a positive threshold characteristic of a threat of tissue desiccation and restores output power to the original power when the first derivative exceeds in positive values a negative threshold characteristic of adequate rehydration of body tissue.

Device for the electro-surgical sclerosing of body tissues

An electrode array is used for the thermal schlerosing of body tissue. The electrode array has at least three active electrodes that, during use, are placed in electrical-conducting connection with body tissue. A high frequency generator is electrically connected for selective application of current to the active electrodes for producing a high frequency voltage. A measuring device measures impedance of the tissue between the active electrodes. In addition, a selector device selects a sub-array including at least two active electrodes from the electrode array, the selecting being effected on the basis of the measured impedance. Further, a control device is configured such that a high frequency voltage is respectively applied between the active electrodes of the selected sub-array in such a way that a high frequency current flows between the selected active electrodes through the body tissue.

Device for electrosurgically destroying body tissue

The invention concerns a bipolar coagulation probe () having an electrode tip () which has an end face () in which a pole () of a first electrode () and a pole () of a second electrode () are integrated. In accordance with the invention the bipolar coagulation probe () includes a temperature control unit () with a temperature control medium for temperature control of the end face ().

Bipolar coagulation electrode

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.

Probe arrangement

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.

Electrode arrangement for electrothermal treatment of human or animal bodies

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 the treatment area. The electrode support and the electrode, or electrodes, are constructed for direct insertion into the body tissue, said insertion being channel forming. The temperature stabilizer device has a timed heating device for thermal support of the insertion.

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Berlin, Germany

Thomas Stein