#$%^&*AU2015207934A120160310.pdf#####DISPENSING DEVICE WITH ELASTICALLY DRIVEN MIXER ABSTRACT The invention relates to a mixing device for polymethylmethacrylate bone cements (PMMA bone cements), comprising a mixing space (2) for mixing the PMMA bone cement at least one mixing element (4) supported in the mixing space (2) such that it can rotate a gear, by means of which the rotation of the at least one mixing element (4) can be driven at least one elastically deformable energy-storing element (16) that is connected to the gear such that the gear can be driven by an elastic energy from the energy-storing element (16) and such that the at least one mixing element (4) can be rotated in the mixing space (2) by means of the gear upon the release of elastic energy from the energy-storing element (16). The invention further relates to a vacuum mixing system comprising a mixing device of this type and to a method for mixing a cement, in particular a PMMA bone cement.1/5 343 256 322 1 18 10 16 36 38 2 Figure 1
