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US 12,138,375 B2Granted
Method and apparatus for monitoring the membrane coupling in a pressure measurement system
AssigneeFresenius Medical Care Deutschland GmbH
InventorPascal Kopperschmidt
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Abstract
The present invention relates to a method and to an apparatus for continuously monitoring the membrane coupling in a pressure measurement system in a extracorporeal circuit of a blood treatment machine. The invention enables the continuous monitoring of the functionality of the pressure measurement system without an interruption of any blood treatment being necessary.
Claims14
A method for monitoring the membrane coupling in a pressure measurement system in an extracorporeal circuit of a blood treatment machine comprising the steps:
- detecting periodic pressure pulses occurring in the extracorporeal circuit;
- a frequency analysis based on the detected periodic pressure pulses for calculating at least one Fourier coefficient;
- comparing the at least one calculated Fourier coefficient with respect to its intensity with at least one associated reference value;
- and
- outputting a signal when the comparison shows that, with respect to its intensity, the at least one Fourier coefficient differs from the associated reference value beyond a predetermined tolerance threshold value.
2 more elements
Dependencies are inferred from the claim text.