Althin Medical, Inc.

Jeffrey B Grogan

Thomas D Kelly

Thore Falkvall

Harley D Johnson

Alan G Wolfe

Methods are disclosed for providing certain operational instructions to a hemodialysis machine. The hemodialysis machine possesses a programmable memory and a capability of operating according to a time-varying parameter such as variable ultrafiltration. According to the methods, the machine operator enters into the memory a desired time period, a target cumulative value of the time-varying parameter, such as target UF volume, and a proposed time-varying profile of the time-varying parameter that is representable as a plot of coordinates in a region defined by an ordinate of values of the parameter and a time-based abscissa, wherein the plot defines a profile cumulative value of the parameter. If the profile cumulative value is not equal to the target cumulative value, then the proposed time-varying profile is changed along the ordinate so that the profile cumulative value is made equal to the target cumulative value. The machine then operates according to the changed profile to enable the apparatus to achieve, while operating, the entered target cumulative value within the time period.

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West Linn, OR, United States of America

Jeffrey B Grogan