US 12,419,588 B2
System and method for monitoring respiratory rate measurements
Ammar Al-Ali, San Juan Capistrano, CA (US); Bilal Muhsin, San Clemente, CA (US); and Michael O'Reilly, San Jose, CA (US)
Assigned to Masimo Corporation, Irvine, CA (US)
Filed by MASIMO CORPORATION, Irvine, CA (US)
Filed on Sep. 23, 2020, as Appl. No. 17/029,995.
Application 17/029,995 is a continuation of application No. 15/851,176, filed on Dec. 21, 2017, granted, now 10,813,598.
Application 15/851,176 is a continuation of application No. 14/752,466, filed on Jun. 26, 2015, granted, now 9,877,686, issued on Jan. 30, 2018.
Application 14/752,466 is a continuation of application No. 12/905,449, filed on Oct. 15, 2010, granted, now 9,066,680, issued on Jun. 30, 2015.
Claims priority of provisional application 61/366,866, filed on Jul. 22, 2010.
Claims priority of provisional application 61/261,199, filed on Nov. 13, 2009.
Claims priority of provisional application 61/252,086, filed on Oct. 15, 2009.
Prior Publication US 2021/0068768 A1, Mar. 11, 2021
Int. Cl. A61B 5/318 (2021.01); A61B 5/00 (2006.01); A61B 5/0205 (2006.01); A61B 5/021 (2006.01); A61B 5/024 (2006.01); A61B 5/08 (2006.01); A61B 5/1455 (2006.01); A61B 5/339 (2021.01); A61B 7/00 (2006.01); G16H 40/60 (2018.01); G16H 40/63 (2018.01); G16H 40/67 (2018.01); A61B 5/145 (2006.01)
CPC A61B 5/746 (2013.01) [A61B 5/0205 (2013.01); A61B 5/02416 (2013.01); A61B 5/0803 (2013.01); A61B 5/0816 (2013.01); A61B 5/14551 (2013.01); A61B 5/318 (2021.01); A61B 5/7221 (2013.01); A61B 5/742 (2013.01); A61B 7/003 (2013.01); G16H 40/60 (2018.01); G16H 40/63 (2018.01); G16H 40/67 (2018.01); A61B 5/021 (2013.01); A61B 5/024 (2013.01); A61B 5/14542 (2013.01); A61B 5/339 (2021.01); A61B 5/7278 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A patient monitoring system configured to improve a confidence of measured respiratory rates, the system comprising:
an acoustic sensor configured to generate an acoustic signal from monitoring a patient;
an ECG sensor configured to generate an ECG signal from monitoring the patient;
an optical sensor configured to generate a photoplethysmographic signal from monitoring the patient;
one or more hardware processors configured to:
receive the acoustic signal from the acoustic sensor, the ECG signal from the ECG sensor, and the photoplethysmographic signal from the optical sensor,
determine a first respiratory rate measurement for the patient from the acoustic signal, a second respiratory rate measurement for the patient from the ECG signal, and a third respiratory rate measurement for the patient from the photoplethysmographic signal,
determine a combined respiratory rate measurement for the patient from the first respiratory rate measurement, the second respiratory rate measurement, and the third respiratory rate measurement,
output the combined respiratory rate measurement,
determine a plurality of pulse wave transit times from comparisons of the ECG signal and the photoplethysmographic signal,
determine a pulse transit time respiratory rate measurement from the plurality of pulse wave transit times, and
determine the combined respiratory rate measurement further from the pulse transit time rate measurement; and
a display configured to present the combined respiratory rate measurement.