Patent ID: 8924458

Claim:
A method performed by one or more user interface processing devices comprising: switching focus of one or more user interfaces from a first processing device to a second processing device or from the second processing device to a first processing device, wherein the first processing device is configured to control and to monitor medical functions of a dialysis medical device, and wherein the second processing device is configured to receive information regarding the control and the monitoring of the medical functions of the medical device from the first processing device; wherein, when the first processing device has focus: managing first communications between one or more user interface devices and the first processing device, and permitting the one or more user interface devices to affect operation of the first processing device; and wherein, when the second processing device has focus: managing second communications between the one or more user interface devices and the second processing device, and permitting the one or more user interface devices to affect operation of the second processing device; and isolating the second processing device from the first processing device so that if the second processing device experiences a condition, the first processing device continues to control the medical functions and the medical functions of the medical device are not affected by the condition.