US 12,226,190 B2
System and method for monitoring cardiorespiratory parameters
Philip De Chazal, Blue Mountains (AU); Conor Hanley, Dublin (IE); and Conor Heneghan, Dublin (IE)
Assigned to ResMed Sensor Technologies Limited, (IE)
Filed by RESMED SENSOR TECHNOLOGIES LIMITED, Dublin (IE)
Filed on Jan. 14, 2021, as Appl. No. 17/148,986.
Application 17/148,986 is a continuation of application No. 14/455,522, filed on Aug. 8, 2014, granted, now 10,893,811.
Application 14/455,522 is a continuation of application No. 12/376,771, granted, now 8,834,364, previously published as PCT/US2007/083155, filed on Oct. 31, 2007.
Claims priority of provisional application 60/863,862, filed on Nov. 1, 2006.
Prior Publication US 2021/0338086 A1, Nov. 4, 2021
Int. Cl. A61B 5/0205 (2006.01); A61B 5/00 (2006.01); A61B 5/0507 (2021.01); A61B 5/11 (2006.01); A61B 5/113 (2006.01)
CPC A61B 5/0205 (2013.01) [A61B 5/0507 (2013.01); A61B 5/1102 (2013.01); A61B 5/113 (2013.01); A61B 5/6802 (2013.01); A61B 5/681 (2013.01); A61B 5/6895 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A system comprising:
a sensor unit comprising one or more sensors configured to transmit a radio frequency signal towards a living subject and receive a radio frequency signal reflected off a moving body part of the living subject;
a monitoring unit comprising:
one or more processors configured to analyze a raw sensor signal derived from the reflected radio frequency signal to determine one or more measurements of physiological activity of the living subject, wherein the physiological activity comprises respiration, cardiac activity, or bodily movement, wherein the analysis of the raw sensor signal comprises calculating a short-time Fourier transform of an epoch of the raw sensor signal, wherein the epoch comprises a period of bodily motion, and wherein a segment of the raw sensor signal that corresponds to the period of bodily motion is excluded from the calculation of the short-time Fourier transform; and
a communications system configured to transmit the determined one or more measurements of physiological activity of the living subject to a separate unit; and
a display configured to provide information relating to the determined one or more measurements of physiological activity of the living subject.