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. 02, 2016
Filed:
Jan. 04, 2012
Applicants:
James Dripps, Peeblesshire, GB;
James Ochs, Seattle, WA (US);
Paul S. Addison, Midlothian, GB;
Inventors:
Assignee:
Nellcor Puritan Bennett Ireland, Mervue, Galway, IE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 5/08 (2006.01); A61B 5/0295 (2006.01); A61B 5/1455 (2006.01); A61B 5/00 (2006.01);
U.S. Cl.
CPC ...
A61B 5/08 (2013.01); A61B 5/0295 (2013.01); A61B 5/0816 (2013.01); A61B 5/14551 (2013.01); A61B 5/7278 (2013.01); A61B 5/7246 (2013.01);
Abstract
A patient monitoring system may receive a physiological signal such as a photoplethysmograph (PPG) signal that exhibits frequency and amplitude modulation based on respiration. A phase locked loop may generate a frequency demodulated signal and an amplitude demodulated signal from the PPG signal. An autocorrelation sequence may be generated for each of the frequency demodulated signal and the amplitude demodulated signal. The autocorrelation sequences may be combined and respiration information may be determined based on the combined autocorrelation sequence.