Multi-wavelength oximeter having a means for disregarding a poor signal
Motion artefact rejection system for pulse oximeters
Method and apparatus for calculating arterial oxygen saturation based plethysmographs including transients
Method and apparatus for improving the accuracy of pulse transmittance oximeter
Condensed oximeter system with noise reduction software
Oximeter with motion detection for alarm modification
Apparatus for measuring predetermined data of living tissue
Signal processing apparatus and method Patent #: 5482036
ApplicationNo. 490315 filed on 06/14/1995
US Classes:600/323, Oxygen saturation, e.g., oximeter356/41Oximeters
ExaminersPrimary: Cohen, Lee S.
Assistant: Winakur, Eric F.
Attorney, Agent or Firm
Foreign Patent References
International ClassA61B 005/00
AbstractMotion compensation is based on analysis of intensity signals received by detectors, without separately measuring a motion signal, without providing feedback to cancel the motion signal and without attempting to mathematically eliminate the motion signal. Instead, the present invention mathematically recognizes the presence of the motion signal and recognizes a few key characteristics of the motion signal and makes corresponding assumptions. First, it is recognized that the motion/noise in each wavelength signal is proportional. Second, it is assumed that the blood pulse signal is not affected by motion.
Field of SearchOximeters