Abstract: The instrument (1) for introducing solid fillers (2) into the interior of a bone comprises a cannula (3) and a handle (4) connected to the latter, wherein a reservoir (5) is mounted displaceably in the handle (4), and wherein the reservoir (5) has a plurality of chambers (5a) for receiving solid fillers (2), the chambers (5a) being arranged in the chamber (5) in such a way that, by displacement of the reservoir (5), the chambers (5a) can be positioned one after another in a dispensing position (A) relative to the cannula (3), such that the fillers (2) of the chamber (5b) located in the dispensing position (A) can be delivered to the cannula (3).