The subject matter is a patient supporting device for supporting a patient during a medical treatment, in particular a dialysis treatment, and a treatment apparatus with such a patient supporting device, and a corresponding method for controlling and/or regulating a medical treatment device, in particular a dialysis device, using such a patient supporting device.

The present disclosure relates to a holder for releasably coupling at least one external medical module, for example a blood filter, to a medical treatment apparatus, wherein the holder comprises at least a first reception unit and a second reception unit.