Erbe Elektromedizin Gmbh

Marc Kegreiss

Heiko Schall

Peter Selig

Jürgen Beller

Thomas Baur

Erich Werner

Jürgen Hiller

Juergen Hiller

Sandra Keller

An apparatus comprising a socket insert that is arranged in a receptacle of the apparatus. The socket insert is connected to an operating medium connector. In the receptacle a data interface is covered by the socket insert and inaccessible from outside. To obtain access to the apparatus software or data, the socket insert can be replaced by a service insert that covers the operating medium output but contacts the data plug. The service insert allows communication with the apparatus control to input or output data and/or programs. The arrangement of the service interface covered by socket inserts provides an effective means for access control to the service interface. It impedes or avoids non-authorized access to the interface and damages for persons and material that otherwise could occur due to the missing disruptive discharge proof potential separation between the service interface and particularly the power section of the apparatus control.

Apparatus with service interface and method for servicing the apparatus

An arrangement having a device for providing high-frequency voltage Ufor contact coagulation of the biological tissue. The device is equipped to operate with a high voltage that is normally not suitable for contact coagulation, but otherwise used for spark coagulation, for example, more than 400V at the beginning of the contact coagulation. During the operation of the generator the tissue impedanceis monitored. This can occur by means of continuously measuring the voltage Uof the flowing current Iand the phasing &#x3c6; between the voltage and the flowing current. Using both, the measuring unit continuously determines the tissue impedance. A minimum detector is provided to determine if an impedance minimumhas passed through and if such is found, to induce the generator control to reduce the voltage Udelivered by the device to a value that avoids spark generation as well as desiccation of the tissue.

Arrangement for contact coagulation of biological tissue

An HF surgical appliance comprising an HF generator having an output circuit, which contains an output transformer and has an output impedance. Output terminals, to which an HF surgical instrument can be connected, are provided, said instrument supplying a high-frequency current with a specific frequency into tissue to treat the same. An additional output circuit containing an additional transformer, which is connected between the output circuit and the output terminals to reduce the output impedance is also provided. In this way, the HF surgical appliance can be operated with a high power output even on loads having low impedance.

High frequency surgical generator comprising an additional transformer

A surgical instrument that comprises at least one microcontroller arranged in the handle of the instrument and that communicates with the surgical apparatus&#x2014;without the interposition of a radio link via the cable that already exists between the surgical apparatus and the surgical instrument. Safe data transmission is ensured not only in the high-interference environment of an active RF surgical apparatus, but also in, for example, water jet, argon plasma and cryosurgical apparatuses, endoscopes. A differential transmission technique is selected, wherein one or more conductor pairs (insulated conductors) are utilized, one of the conductors of said conductor pairs transmitting the signal and the other transmitting the inverted signal. By subtracting the two signals, the actual data signal is yielded on the receiver side. If feedback interferences from the environment act on the data transmission link, the subtractions performed on the respective receivers cancels out the interferences.

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Tuebingen, Germany

Marc Kegreiss