Mixing device and a single-use device for a mixing device

A mixing device for mixing at least two substances, comprising:

• a single-use device configured for single use;
• and
• a reusable device configured for multiple use,
• the single-use device comprising an impeller having a rotor housing and a plurality of vanes to mix the substances, and a cup to receive the rotor housing, the impeller configured to rotate about a desired axis of rotation defining an axial direction, the impeller having an outer diameter which is a maximum extension of the impeller in a radial direction perpendicular to the axial direction, a magnetically effective core disposed in the rotor housing, the cup configured in a dimensionally stable manner, the reusable device comprising a stator, by which, in the operating state, the impeller is capable of being contactlessly magnetically driven to rotate about the desired axis of rotation and magnetically levitated with respect to the stator, the stator comprising a plurality of windings to generate an electromagnetic rotating field to drive and levitate the impeller, and the stator having a stator housing with a recess configured to receive the cup with the rotor housing arranged therein, so that the cup is capable of being inserted into the recess,
• a plurality of stabilizing elements disposed at the impeller to stabilize the impeller against tilting, each stabilizing element of the plurality of stabilizing elements arranged between two vanes of the plurality of vanes and extending from a radial inner edge to a radial outer edge with respect to the radial direction, and each of the radial outer edges having a distance from the desired axis of rotation which is smaller than half the outer diameter of the impeller.