Patent ID: 9612182
Date: 2017-04-04
CPC Classifications: A61M,G01N

Claim:
1. A method for detecting and responding to a fault condition in a pumping device included in an extracorporeal blood treatment system, said method comprising: obtaining measurement data by detecting pulses in the extracorporeal blood treatment system using at least one pressure sensor arranged in the extracorporeal blood treatment system, wherein the pulses comprises first pulses originating from the pumping device of the extracorporeal blood treatment system and second pulses originating from a physiological pumping device in a subject connected to the extracorporeal blood treatment system; generating a time-dependent monitoring signal based on the measurement data obtained from the at least one pressure sensor, wherein the monitoring signal comprises one or more of the first pulses and none of the second pulses; processing the monitoring signal to calculate a parameter value which is indicative of the shape of at least part of a first pulse in the monitoring signal; evaluating the parameter value for detection of a fault condition in the pumping device; and activate an alarm and/or stop the pumping device if a fault condition is detected.