Surgery – Diagnostic testing – Measuring or detecting nonradioactive constituent of body...
Patent
1997-07-03
2000-06-27
Winakur, Eric F.
Surgery
Diagnostic testing
Measuring or detecting nonradioactive constituent of body...
600481, 600508, 600529, A61B 500
Patent
active
060817356
ABSTRACT:
The present invention involves method and apparatus for analyzing two measured signals that are modeled as containing primary and secondary portions. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, the present invention involves utilizing a transformation which evaluates a plurality of possible signal coefficients in order to find appropriate coefficients. Alternatively, the present invention involves using statistical functions or Fourier transform and windowing techniques to determine the coefficients relating to two measured signals. Use of this invention is described in particular detail with respect to blood oximetry measurements.
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Diab Mohamed K.
Elfadel Ibrahim M.
Kiani Massi E.
McCarthy Rex J.
Smith Robert A.
Masimo Corporation
Winakur Eric F.
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