Olympus Winter Ibe Gmbh

Gyrus Acmi, Inc.

Frank Breitsprecher

Jelle Dijkstra

Fabian Janich

Tino Kirfe

Kester Julian Batchelor

Wayne Williams

Uwe Fischer

Stefan Schiddel

Lutz Kersten

Hanno Winter

Andreas Karrasch

Anne Kwik

Veronika Handrick

Jens Krüger

Karsten Lorenz

Michael Kadel

An electrosurgical instrument with at least one active electrode for effecting an electrosurgical treatment with an instrument data memory. Furthermore, the electrosurgical instrument has a connector for a connecting cable or a connected connecting cable including supply lines for supplying the active electrode with a high-frequency alternating current required for an electrosurgical treatment. The instrument data memory has at least one read-write area to which usage and status data can be written by an electrosurgical generator.

Electrosurgical instrument and electrosurgical system with an electrosurgical generator

An electrosurgical system for generating high-frequency alternating current for an ablation of body tissue, containing a high-frequency voltage supply unit which is or is to be electrically connected to a first and second electrode, and which is configured to supply the electrodes with a high-frequency alternating voltage. The electrosurgical system further includes a feedback unit which is electrically connected to the first and second electrodes and which is configured to generate and transmit an output signal dependent on the electrical resistance between the first and second electrodes. The electrosurgical system also includes a control unit that is configured to control the high-frequency voltage supply unit in such a way as to be able to automatically switch between at least one first and one second operating mode.

Electrosurgical system for generating high-frequency alternating current

An electrosurgical generator supplies, during operation, a high-frequency alternating current to an electrosurgical instrument for plasma cutting of body tissue. The electrosurgical generator has outputs for connecting an electrosurgical instrument to supply an electrosurgical instrument connected to the outputs with a high-frequency alternating current, and for determining the impedance of a load connected to the outputs. The electrosurgical generator features impedance and voltage measuring units as well as an output voltage control unit. The output voltage control unit is designed to control the AC output voltage depending on a maximum output voltage value that is set during operation depending on an output value of the impedance measuring unit and/or depending on an output value of the voltage measuring unit, such that the maximum output voltage value predefines a lower AC output voltage during a vaporization phase than during an ignition phase occurring subsequently to the vaporization phase.

Electrosurgical generator, electrosurgical system, and method of operating an electrosurgical generator

Apparatus and associated methods relate to controlling electrical power of an electrotherapeutic signal that is provided to a biological tissue engaged by an electrosurgical instrument during a medical procedure. Electrical power&#x2014;a product of a voltage difference across and an electrical current conducted by the engaged biological tissue&#x2014;is controlled according to a therapeutic schedule. The electrotherapeutic schedule can be reduced or terminated in response to a termination criterion being met. In some examples, the termination criterion is a current characteristic, such as, for example, a decrease in current conducted by the engaged biological tissue. In some examples, the termination criterion is a biological tissue resistance characteristic, such as, for example, an increase in the biological tissue resistance that exceeds a predetermined delta resistance value.

Alternate power correction outputs in electrosurgical systems

An electrosurgical generator with a high-voltage power supply that supplies a DC output voltage receives the DC output voltage of the high-voltage power supply and generates a high-frequency AC output voltage. When generator is operating, a control unit receives signals from an AC output voltage measuring unit and current measuring unit. The control unit limits an increase of DC output voltage of the high-voltage power supply as soon one predefined maximum value is reached or exceeded. When the generator is operating, the control unit configured to receive signals from a DC output voltage measuring unit that represent a respective current value of the DC output voltage, and to compare a respective current value of DC output voltage with a predefined minimum value for DC output voltage, and to cause the DC output voltage of the high-voltage power supply to increase as soon as it falls below the predefined minimum value.

Electrosurgical generator

A high-frequency surgical appliance has a peak value detection and control unit, having a current or voltage sensor designed to detect the current strength or the voltage of a high-frequency alternating current output to the load. The control unit has a root-mean-square value former or is connected thereto, connected to the sensor and forms a root-mean-square value of a high-frequency alternating current detected by the sensor. The control unit deactivates the high-frequency generator when, in the steady state of the HF high-voltage circuit, a quantity of an instantaneous peak value of a signal representing an instantaneous value of the high-frequency alternating current detected during operation by the sensor exceeds a quantity of a value derived from the root-mean-square value of the high-frequency alternating current detected during operation by the sensor. The sensor continuously detects the instantaneous value of the current or voltage flowing during operation into the HF high-voltage circuit.

High-frequency surgical appliance

Growing community of inventors

Berlin, Germany

Frank Breitsprecher