Patent ID: 7303680

Claim:
A hemodialysis machine comprising: at least one dialysate pump configured to move dialysate to a dialyzer; a blood pump configured to move blood to the dialyzer; and a video screen and at least one processor configured to (a) enter a total time and a cumulative ultrafiltration value, (b) automatically calculate a constant ultrafiltration rate from the cumulative ultrafiltration value and the total time, (c) display the constant rate on the video screen, (d) enable a plurality of ultrafiltration values as steps over time forming an ultrafiltration profile to be entered thereafter via selection of a profile ultrafiltration option displayed on the video screen, (e) use the constant calculated rate so that the cumulative ultrafiltration value is removed, through the dialyzer, within or over the total time, according to the constant rate, or (f) display a shape of the ultrafiltration profile on the video screen and use the ultrafiltration profile alternatively so that thereafter the cumulative ultrafiltration value is removed, within or over the total time, according to the values as steps over time of the ultrafiltration profile.