Dialyzer cartridge mounting arrangement for a hemodialysis system

A hemodialysis system, comprising:

• a pair of dialysate quick-connect fittings arranged to make a connection to an inlet or outlet port of a dialyzer, each of the dialysate quick-connect fittings including a base and a slide element that is movable between first and second positions relative to the base such that with the slide element in a first position, the slide element closes a groove and the dialysate quick-connect fitting is allowed to receive an inlet or outlet port for engagement, and with the slide element in the second position, the groove is exposed and the dialysate quick-connect fitting is properly engaged with a received inlet or outlet port;
• and
• a dialyzer mount arranged to support a single dialyzer unit, wherein the dialyzer unit can be any one of a plurality of differently sized and/or shaped dialyzer units having different distances between dialysate connections on the dialyzer units, the dialyzer mount including:
• a pair of keyhole features, each keyhole feature being arranged to engage with a respective one of the dialysate quick-connect fittings connected to a dialysate port of the dialyzer, each keyhole feature having an upper insertion area sized to receive a portion of the base of the respective dialysate quick-connect fitting inserted into the upper insertion area, and a lower flanged portion having a width that is smaller than an overall width of the base of the quick-connect fitting and that engages with the groove on the dialysate quick connect fitting such that the slide element is not movable to the first position.