The invention relates to a mobile selection system for selecting medical accessories comprising a control system, a user interface and a treatment cart. The treatment cart comprises a plurality of storage devices each having at least two storage areas for a respective accessory type. The control system thereby implements a selection method having the following method steps. The treatment identifier of the treatment to be performed is determined in one method step via the user interface. In a further method step, a plurality of accessory set parameters which characterize a medical accessory set are determined on the basis of an accessory database and on the basis of the treatment identifier of the treatment to be performed. The treatment cart comprises a release mechanism, wherein the control system is designed to control the release mechanism so as to release those medical accessories for which at least one of the storage devices comprises storage area for their accessory types and which are characterized by the accessory set parameters on which the control is based.
