Karl Storz Gmbh & Co.

Erbe Elektromedizin Gmbh

Georg Lohr

Karl Fastenmeier

Heinz Lindenmeier

Gerhard Flachenecker, Deceased

Gunter Farin

Reiner Mausberg

Heiko Visser

Hildegard Flachenecker, Legal Representative

The present invention relates to a high-frequency surgical generator (1) for adjusted cutting and coagluation having adjustment devices for setting the momentary electric output values, such as, e.g., current, voltage and power and having a device for direct and/or indirect determination of the state of the tissue in the vicinity of the cutting electrodes. The present invention is distinguished by a time-interval transmitter and electronic desired-value transmitters being provided and one mode of operation of at least two different modes of operation having different operative purposes being selected in successive time intervals and an electronic memory having evaluation electronics, to which the output value of the measurement device is transmitted and the output signal of the evaluation electronics is transmitted to the electronic desired-value transmitters in conjunction with the output value of the measurement device with the aid of which the temporal course of the electric output values of the high-frequency generator for the selected mode of operation are suitably set.

High-frequency surgical generator for adjusted cutting and coagulation

A system for controlling the operation of a high frequency biological tissue cutting device for cutting biological tissue with high-frequency current having a HF generator component designed so that the amplitude of the voltage (UG) applied to the tissue can be changed. At least one adjustment device is provided to adjust one of the characteristic values (K) of the high frequency generator component to a 1st desired value (b), related to the output of an indicator device that indicates by an electrical signal (d) the size and intensity of the electric arc occurring between the surgical probe and the tissue during cutting. A desired-value transmitter provides a second desired value (c) representing the desired size and intensity of the electric arc. An evaluation unit receives the output signal (d) of the indicator device and the 2nd desired value representing the intensity of the electric arc (c) and provides therefrom a desired value (b) output for the adjustment device such that the maximum changing speed of the desired value (b) is at least one magnitude smaller than the speed with which the adjustment device adjusts the characteristic value (K) of the high-frequency generator component.

System for cutting biological tissue

The present invention relates to a high-frequency surgical generator (1) for adjusted cutting and coagluation having adjustment devices for setting the momentary electric output values, such as, e.g., current, voltage and power and having a device for direct and/or indirect determination of the state of the tissue in the vicinity of the cutting electrode. The present invention is distinguished by a time-interval transmitter and electronic desired-value transmitters being provided and one mode of operation of at least two different modes of operation having different operative purposes being selected in successive time intervals and an electronic memory having evaluation electronics, to which the output value of the measurement device is transmitted and the output signal of the evaluation electronics is transmitted to the electronic desired-value transmitters in conjunction with the output value of the measurement device with the aid of which the temporal course of the electric output values of the high-frequency generator for the selected mode of operation are suitably set.

High frequency-surgical generator for adjusted cutting and coagulation

The present invention relates to high-frequency generator for cutting tissue having adjustment devices, with which at least one of the momentary electric output values, such as e.g., current, voltage, power or electric arc can be set. The present invention is distinguished by, for improvement of the initial incision behavior, an electronic desired-value transmitter and a measurement device having an evaluation unit for direct and/or indirect determination of cutting being provided and said electronic desired-value transmitter providing upon commencement of an incision a particularly suited generator setting for the initial incision as long as said measurement device signals tissue-separating cutting of the probe and thereupon providing a lower desired value for the generator in such a manner that normal cutting corresponding to the desired surgical goal ensues.

High-frequency surgical generator for cutting tissue

A high-frequency electrosurgery apparatus for cutting and/or coagulating biological tissues that may have a number of operating modes is described. As control panel on which one or more parameters of the high-frequency output of the apparatus can be set. Particularly important is the current-limiting system which includes setting of a desired maximal current level, to which for a particular mode of operation the current can be limited or in response to which a warning signal may be activated and/or the high-frequency generator shut down. The effective current that the application instrument reaches or exceeds previously set maximal current level. In such a high-frequency electrosurgery apparatus the cable leading to the active electrode is provided with electrial shielding which is connected to the conductor leading to the neutral electrode at a location between the output transformer of the apparatus and the current sensor of the current limiting system.

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Ottobrunn, Germany

Georg Lohr