Patent ID: 9005153
Filing Date: 2015-04-14
Classification: A61M,F04B

Abstract:
1. A method of monitoring a peristaltic flexible tube pump for pumping a liquid in a flexible tubing line, the peristaltic flexible tube pump having a at least first and second individual displacing bodies for occluding the flexible tubing line, said method comprising: operating the pump; determining a power consumed by the pump, or a variable which correlates with this power, or a pressure in a segment of the flexible tubing line upstream or downstream of the pump, or a variable which correlates with this pressure during the operation of the pump, using a power or pressure sensor sensing a measurement signal corresponding to the power or pressure of the pump; sensing the power consumed by the pump, the variable which correlates with this power, the pressure in the segment of the flexible tubing line upstream or downstream of the pump, or the variable which correlates with this pressure for time ranges associated with respective ones of the individual displacing bodies, the sensing using a power or pressure sensor sensing a measurement signal corresponding to the power or pressure of the pump; comparing a first measurement signal associated with the first individual displacing body with a second measurement signal associated with the second individual displacing body to determine a difference between the measurement signals of the first and second individual displacing bodies; and electronically indicating that the pump is not operating properly if the difference between the measurement signals of the first and second individual displacing bodies is larger than a preset size.