Patent ID: 7318892

Claim:
A hemodialysis apparatus, comprising: (a) means for delivering extracorporeal blood to a hemodialyzer and for monitoring or controlling (i) blood-flow rate, (ii) arterial pressure, (iii) venous pressure, and (iv) anticoagulant delivery to the extracorporeal blood; and (b) a user/machine interface operably connected to said means for delivering extracorporeal blood, the user/machine interface comprising a touch screen adapted to display an indicium corresponding to a parameter pertinent to operation of the hemodialysis machine and to permit the user, by touching the indicium, to cause a change in the parameter, the touch screen also adapted to display a time-variable profile of the parameter, the profile being representable as a plot of coordinates, the plot being with respect to an ordinate of values of the parameter and a time-based abscissa, the touch screen being further adapted to distinguish past from future time intervals of the parameter during treatment by coloring the past and future time intervals within the plot of the time-variable profile differently.