Abstract: In one aspect, a method and system for detecting a change in fluid dynamics of a fluid flowing through an extra-corporeal circuit is disclosed, which includes establishing an acoustic wave resonance across a transverse dimension of at least a portion of a line associated with the extra-corporeal circuit through which the fluid flows, monitoring a phase signal of the resonant acoustic wave, and identifying occurrence of a change in fluid dynamics of the flowing fluid when the observed phase signal of the resonant acoustic wave indicates a deviation from the expected fluid flow signature. The change in fluid dynamics can be used to indicate a venous needle dislodgement event.

Abstract: A method for operating a blood treatment apparatus including an extracorporeal blood circuit having a blood filter with a blood chamber and a dialysate chamber, between which a membrane is arranged. The method encompasses operating a blood pump from a first time point, at which an ultrafiltration pump is stopped, at least until a second time point, at which at least one of the following conditions is met for the first time after the first time point: a time interval after has elapsed, the blood pump has conveyed a volume after, a measurement of a fluid in the extracorporeal blood circuit exceeds or falls below a threshold.

Abstract: A system provides non-contact communication between a controller and a medical device. The control signal may be a wirelessly transmitted control signal, such as a wireless radiofrequency signal and/or an optical or acoustic signal, for example. An interface device is provided that may be a remote controller or switch that may be used by a user, such as a health care practitioner (HCP), in connection with navigating and activating screens of a dialysis machine during a dialysis treatment without requiring the HCP to physically contact the dialysis machine. With the described system, the HCP does not need to re-glove each time a change is made to an on-going dialysis treatment when interfacing with a graphical display of the dialysis machine.

Abstract: In a medical device, a Tx Clock Button is presented on a graphics display overlain with a touch screen which allows an operator to control multiple functions of the medical device. Various parts of Tx Clock Button may be displayed in different colors, and based on the state of treatment at a given time and in response to the operator touching Tx Clock Button, the colors may change to visually indicate a change in state. When the Tx Clock Button is touched for the first time after a new patient has been selected, multiple functions, times, displays, parameters, and alarms of the medical device are initiated. When the Tx Clock Button is touched for the second time, various ones of the multiple functions, times, displays, parameters, and alarms may be suspended. A third touch of the Tx Clock Button may resume the suspended items.

Abstract: In a medical device, a Tx Clock Button is presented on a graphics display overlain with a touch screen which allows an operator to control multiple functions of the medical device. Various parts of Tx Clock Button may be displayed in different colors, and based on the state of treatment at a given time and in response to the operator touching Tx Clock Button, the colors may change to visually indicate a change in state. When the Tx Clock Button is touched for the first time after a new patient has been selected, multiple functions, times, displays, parameters, and alarms of the medical device are initiated. When the Tx Clock Button is touched for the second time, various ones of the multiple functions, times, displays, parameters, and alarms may be suspended. A third touch of the Tx Clock Button may resume the suspended items.