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:
Apr. 06, 2010
Filed:
Jun. 14, 2007
Philip R. Westbrook, Carlsbad, CA (US);
Daniel J. Levendowski, Carlsbad, CA (US);
Timothy Zavora, Carlsbad, CA (US);
Djordje Popovic, Carlsbad, CA (US);
Milenko Cvetinovic, Carlsbad, CA (US);
Chris Berka, Carlsbad, CA (US);
Philip R. Westbrook, Carlsbad, CA (US);
Daniel J. Levendowski, Carlsbad, CA (US);
Timothy Zavora, Carlsbad, CA (US);
Djordje Popovic, Carlsbad, CA (US);
Milenko Cvetinovic, Carlsbad, CA (US);
Chris Berka, Carlsbad, CA (US);
Advanced Brain Monitoring, Inc., Carlsbad, CA (US);
Abstract
Photoplethysmography (PPG) is obtained using one red (e.g., 660 nm) and one infrared (e.g., 880 to 940 nm) light emitting diode with a single photo diode in combination with a pressure transducer thereby allowing both CVP and SpO2 to be measured simultaneously. The system also includes sensors capable of measuring position, angle and/or movement of the sensor or patient. Once the PPG signal is acquired, high pass adaptive and/or notch filtering can be used with one element of the filter from the red and infrared signals used to measure the arterial changes needed to compute SpO2 and the other element of the signal can be used to measure CVP changes.