Abstract: The present disclosure relates to a test device to be inserted into the syringe receptacle of a pump, for example for a blood treatment apparatus, for testing at least one function of the pump and/or of the blood treatment apparatus. The test device includes a holding device for releasably holding the test device on the housing of the blood treatment apparatus. In addition, the test device includes at least one movable actuator and at least one electric motor arranged to directly or indirectly move said movable actuator or a section thereof.

Abstract: The present invention relates to a simulation model for simulating a tube line comprising at least one hollow cylindrical section that is configured to be arranged in a tube receiver of a blood leak detector of a blood treatment machine, wherein a respective receiver for a respective light source is provided at the axial ends of the hollow cylindrical section, by means of which light source light can be introduced into the hollow cylindrical section; and at least one light guidance element that is arranged in the hollow cylindrical section and that is configured to deflect light introduced into the hollow cylindrical section such that the light moves outwardly out of the hollow cylindrical section through at least one opening in a radial outer side of the hollow cylindrical section. The invention further relates to a method of checking the function of a blood leak detector by means of a simulation model in accordance with the invention.

Abstract: The present invention relates to an apparatus (1) for holding a disposable medical item, in particular a dialyzer (2), plasma filter or adsorbent, for treating blood, a system (10) comprising such an apparatus, and a method for operating a disposable medical item for treating blood. A bearing device (4) is thereby configured to rotatably support the disposable item, and a drive device (5) is thereby configured to rotate the rotatably mounted disposable item around a longitudinal axis (L) extending substantially in a direction in which the blood flows through the disposable item when the disposable item is in operation. Alternatively or additionally, a sensor device (6) is configured to detect a rotation of the rotatably mounted disposable item around at least one rotational axis (L, Q), in particular around the longitudinal axis (L) and/or around a transverse axis (Q) running perpendicular to the longitudinal axis (L) and output corresponding sensor data.