Medical fluid pump, bearing and holding device and medical pump system

The utility model relates to a medical fluid pump, a bearing and holding device and a medical pump system, the medical fluid pump is preferably a medical fluid pump of an infusion pump structure type or an injection pump structure type, the medical fluid pump is provided with a pump shell, a display is arranged on the front side of the pump shell, and the bearing and holding device is arranged on the pump shell. At least one electrical connector is arranged on the opposite side of the pump housing, said electrical connector having a connector contour protruding or recessed from the pump housing, said connector contour defining a plug-in or plug-in direction for a connector partner. According to the invention, the joint contour has at least one elastically deformable latching tongue, which is oriented substantially parallel to the insertion direction and has an undercut, preferably in the form of a latching lug, on a freely projecting end section of the latching tongue, which undercut allows an engagement inwa