Patents Assigned to Kontron Instruments AG
  • Detection of parasitic signals during pulsoxymetric measurement
    Patent number: 6181959
    Abstract: In the proposed method for detecting spurious signals caused by movements of the patient or his environment in the pulse oximetric measurement of the arterial oxygen saturation, the intensity of the light emerging from the test specimen is measured by two photodiodes (7, 8). The signals (S1, S2) generated at these photodiodes (7, 8) are normalized to equal levels of their DC components. Finally, to detect spurious signals caused by movements, the differences (&Dgr;Sn) of these normalized signals (S1n, S2n) are formed.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: January 30, 2001
    Assignee: Kontron Instruments AG
    Inventors: Hans Schöllermann, Patrick Eberhard