Blood flow defect detection method for extracorporal blood circuit in dialysis unit using analysis of phase angle of upper harmonic of oscillating pressure signal within extracorporal circuit

摘要

The method detects a defect in the blood flow by measurement and analysis of the phase angle of at least one upper harmonic of the oscillating pressure signal within the extracorporal blood circuit, with indication of a defect dependent on a variation in the phase angle. An independent claim for a device for detection of a blood flow defect in an extracorporal blood circuit during extracorporal blood treatment is also included.