Erbe Elektromedizin Gmbh

Dietmar Karwei

Ralf Kuehner

Fabian Bader

Ralf KÜHNER

An endoscopic surgical instrument including a fluid jet device and an electrode device. The fluid jet device includes a pipe section with a nozzle on one distal end for a dissection and/or a needleless injection by means of a fluid and the electrode device is for cutting and/or coagulating tissue, the pipe section forming the electrode device. The surgical instrument further includes an insulating device attached to the distal end of the pipe section such that the tissue can only be brought into electrically conductive contact with a peripheral region of the pipe section and not with the distal end of the pipe section.

Method of manufacturing an endoscopic surgical instrument

An electrode device of an electrosurgical instrument is known, comprising at least one electrically conductive electrode section and an electrically insulating carrier section, wherein both the electrode section and the carrier section are made from a ceramic material. In order to improve the mechanical and electrical properties and in order to simplify the production, a green body of the carrier section and a green body of the electrode section are connected to each other, in particular materially, to form a single composite green body and are jointly sintered.

Electrode device of an electrosurgical instrument

Water jet surgical instruments comprising a feed line for supplying fluid in one flow direction and one exit nozzle for ejecting the fluid in the form of a fine jet displaying a defined geometric opening configuration are known. In order to be able to widen the jet a fluid chamber is provided&#x2014;viewed in the direction of flow&#x2014;upstream of the exit nozzle. A disturbance device is provided in or on the fluid chamber, said disturbance device being able to generate a turbulent flow inside the fluid chamber.

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Ofterdingen, Germany

Dietmar Karwei