The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 2014
Filed:
Feb. 23, 2011
Ronald A. Widman, Macomb, MI (US);
Arik Anderson, Birmingham, MI (US);
Oleg Gonopolskiy, West Bloomfield, MI (US);
Ronald A. Widman, Macomb, MI (US);
Arik Anderson, Birmingham, MI (US);
Oleg Gonopolskiy, West Bloomfield, MI (US);
Covidien LP, Mansfield, MA (US);
Abstract
A system and method for non-invasively estimating the tissue blood oxygen saturation level of a human subject, including so-called 'outliers', whose physiological make-up causes previously-known techniques to generate invalid tissue blood oxygen saturation estimations. The system includes a computing device and a sensor. The sensor includes a light source configured to emit light of at least four different wavelengths, one at a time. The sensor also includes two light detectors, each positioned a different distances from the light source. Optical density measurements are taken by the light detectors and provided to the computing device. A first tissue blood oxygen saturation value is computed using the optical density measurements associated with three of the four wavelengths, and a second tissue blood oxygen saturation value is computed using the optical density measurements associated with four of the wavelengths. The first and second tissue blood oxygen saturation values are compared, and the human subject is identified as an 'outlier' based upon that comparison.