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:
Sep. 08, 2020
Filed:
Nov. 17, 2016
Covidien Lp, Mansfield, MA (US);
Daniel Lisogurski, Boulder, CO (US);
COVIDIEN LP, Mansfield, MA (US);
Abstract
Systems and methods are provided for operating a physiological monitoring system for determining a physiological parameter of a subject. The physiological system may comprise a pulse oximetry sensor for generating a photoplethysmography (PPG) signal and a gain controller for setting a light detection level. The system may also comprise a filter for filtering the PPG signal. The filter may comprise at least one of filter history and filter coefficients. The system may comprise a processor for determining the power level of light sources of the pulse oximetry sensor and the light detection gain level, and calculating a scaling factor based on the determined power level and the light detection gain level. The processor may also be used for scaling one or more of the filter history and filter coefficients based on the scaling factor, and determining at least one physiological parameter based on the filtered PPG signal.