Medical DC current generator and bipolar medical implant fragmentation device equipped therewith

The present invention is directed to an endoscopic implant cutting and/or fragmenting apparatus of the bipolar type, operating on direct current, comprising an endoscope instrument having at least two opposing electrodes at its distal instrument head forming a cutting gap inbetween for receiving an electrically conductive implant or implant section to generate punctiform physical contact with the implant, and a DC-impulse generator having or connected to a control device adapted to generate a direct current in a pulsed way being controlled by the control device such that in a first phase of physical contact, the current pulse is adjusted preferably by controlling the current value at the electrodes to induce electric energy into the implant material being sufficient to melt the implant material exclusively in the area of the contact portion and in a second phase of physical noncontact, the current pulse is adjusted preferably by controlling the voltage value at the electrodes to generate an electric arc betwe