ELECTROSURGICAL INSTRUMENT

摘要

The invention relates to an electrosurgical instrument for coagulating and/or cutting biological tissue. In order to make said instrument simple and inexpensive to produce while being able to easily and safely perform a surgical intervention therewith, the instrument comprises the following: two joined branches that can be moved towards each other; gripping devices in a proximal zone of the branches or the instrument for joining the branches; electrode parts in a distal zone of the branches or the instrument for grabbing tissue and conducting an H.F. current through the tissue; power supply devices for feeding the H.F. current from an H.F. generator to the electrode parts; a switching device for activating the H.F. current when the branches are joined; at least one spacing element for forming a defined minimum distance between the electrode parts; at least one elastically deformable element which is disposed on at least one of the branches or the gripping devices in such a way that at least one area of the gripping devices can continue to be moved in the proximal region in order to actuate the switching device when the branches are closed and the minimum distance has been reached. The inventive instrument can also be embodied as a shaft-type instrument, at least one electrode part being movable through a shaft in the direction of extension thereof.