Compensation of human variability in pulse oximetry
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United States of America Patent
Stats
-
Aug 20, 2013
Grant Date -
Mar 19, 2009
app pub date -
Sep 18, 2008
filing date -
Feb 15, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided is a method of calibrating a pulse oximeter, in which the effects caused by tissue of a subject can be taken into account. A detector output signal is measured when living tissue of the subject is present between emitters and the detector in a sensor. Nominal calibration and nominal calibration characteristics are read from a memory, whereupon values for the same nominal characteristics for the sensor on living tissue of the subject are established using the detector output signal. Then, changes in the nominal calibration characteristics induced by the living tissue are calculated and a subject-specific calibration is formed by correcting the nominal calibration with the changes. Finally, the hemoglobin fractions are solved using the corrected nominal calibration.
First Claim
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Family
International Classification(s)
- 2008 Application Filing Year
- A61B Class
- 6336 Applications Filed
- 4752 Patents Issued To-Date
- 75 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 4 Citation Count
- A61B Class
- 2.23 % this patent is cited more than
- 12 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 20, 2025 |
