US 12,440,159 B2
Methods for detecting heart rate, respiration, and oxygen saturation and uses thereof
Jacqueline Callihan Linnes, West Lafayette, IN (US); Orlando Sanguinette Hoilett, West Lafayette, IN (US); Ashlyn Twibell, South Bend, IN (US); Hyowon Lee, West Lafayette, IN (US); Rohit Srivastava, West Lafayette, IN (US); Jason D Ummel, West Lafayette, IN (US); and Ryan Lindsey, Evansville, IN (US)
Assigned to Purdue Research Foundation, West Lafayette, IN (US)
Filed by Purdue Research Foundation, West Lafayette, IN (US)
Filed on Jul. 23, 2023, as Appl. No. 18/225,144.
Application 18/225,144 is a continuation of application No. 17/035,018, filed on Sep. 28, 2020, granted, now 11,737,708.
Application 17/035,018 is a continuation of application No. 16/159,007, filed on Oct. 12, 2018, granted, now 10,786,201, issued on Sep. 29, 2020.
Claims priority of provisional application 62/571,299, filed on Oct. 12, 2017.
Prior Publication US 2024/0000384 A1, Jan. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/00 (2006.01); A61B 5/0205 (2006.01); A61B 5/024 (2006.01); A61B 5/08 (2006.01); A61B 5/11 (2006.01); A61B 5/1455 (2006.01)
CPC A61B 5/681 (2013.01) [A61B 5/0205 (2013.01); A61B 5/1112 (2013.01); A61B 5/14552 (2013.01); A61B 5/4833 (2013.01); A61B 5/7207 (2013.01); A61B 5/7257 (2013.01); A61B 5/743 (2013.01); A61B 5/0022 (2013.01); A61B 5/02433 (2013.01); A61B 5/0816 (2013.01); A61B 2503/12 (2013.01); A61B 2560/0214 (2013.01); A61B 2560/0228 (2013.01); A61B 2562/0219 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A device for measuring and monitoring heart rate,
respiration rate, and oxygen saturation of a subject, comprising:
a biometric sensor board having a photosensor adapted to measure reflectance of red and infrared lights off skin tissue thus generating photoplethysmographic data, wherein the biometric sensor board adapted to control one or more light emitting diodes (LEDs), wherein brightness of the LEDs are automatically adjusted to account for skin tone;
a processor unit adapted to analyze the photoplethysmographic data measured by the biometric sensor board thereby extracting heart rate, respiration rate, and oxygen saturation data therefrom;
a motion tracking sensor adapted to track motion of a subject; and
a display adapted to display results of the extracted heart rate, respiration rate, and oxygen saturation data wherein said analyzing the photoplethysmographic data comprises a frequency analysis using a Fourier Transform on photoplethysmographic data collected over several seconds of time, and said heart rate and respiration rate are determined by comparing magnitude of a peak of the Fourier Transform for heart rate and respiration at each frequency to the magnitude of a peak in the Fourier Transform of the motion tracking sensor at each frequency, respectively.