Patent ID: 8529496

Claim:
A peritoneal dialysis system comprising: an enclosure; a stepper motor housed by the enclosure; a pump head in operable communication with the stepper motor; a disposable unit including at least one flexible membrane attached to a rigid piece, the enclosure configured to receive the disposable unit such that the stepper motor can move the pump head towards and away from the flexible membrane to cause, the flexible membrane to move outwardly with respect to the rigid piece as the pump head is moved away from the disposable unit, and the flexible membrane to move inwardly with respect to the rigid piece as the pump head is moved towards the disposable unit; one of (i) an encoder positioned to sense a position of the pump head, and (ii) a home position and a sensor that indicates how far from the home position the pump head has traveled; and a graphical user interface including a display device; a processor that operates with the display device to display a plurality of peritoneal dialysis (“PD”) screens; a first area of the display device dedicated to a plurality of mode selection icons, each mode icon dedicated to a single mode, the area and the mode selection icons displayed on each of the peritoneal dialysis screens; and a second area of the display device dedicated to temporarily displaying, for each selected mode icon, at least one of a graphic and text specific to a selected corresponding mode, the modes including a therapy mode, a parameter adjustment mode and a log mode, the processor configured upon selection of one of the modes to cause the display device to operate in the selected mode, and wherein the at least one graphic and text specific to the therapy, parameter adjustment and log modes is accessible exclusively via the corresponding icon, the therapy mode including a graphic pictorially discerning between a PD fill cycle and a PD drain cycle and pictorially indicating how far the fill or drain cycle has proceeded.