The invention relates to a direct current delivery device, comprising a direct current source or a device for connecting to a direct current source and a first electrode and a second electrode for connecting to the direct current source, wherein the first electrode is configured as a plurality of needles and the second electrode is configured as a planar electrode, as a needle or a plurality of needles directly connected to one another in an electrically conductive manner, wherein the direct current delivery device comprises one or more means for keeping constant the current intensity during the individual delivery of direct current through the needles of the first electrode.
