The present invention relates to the field of a device and a method for entering user information into medical devices. It is based on the problem of supporting the work of the attending medical personnel in the operation of medical devices and to ensure that unsuitable settings are not made inadvertently or accidentally for the concrete treatment situation in the operation of such medical devices. For this purpose a method and a device are proposed in which a second parameter value characterizing the medical device, entered into an input device is verified and depending on this verification it is ordered that the first or second parameter value or neither the first nor the second parameter value can be or is accepted into a control unit which controls the machine.
