An adapter device for current connection element (15) between a handgrip and an electro-surgical instrument (10), comprises an insulation element (40) for adapting at least one insulation section (20) of the current connection element and an electrically conductive element (50) for adapting at least one electrically conducting section (30) of the current conducting element (50). The insulation element (40) and the electrically conductive element (50) are designed so the insulation section (50) and the electrically conductive section (30) can be extended.
