US 12,274,535 B2
Apparatus and method for estimating blood pressure
Chang Soon Park, Chungju-si (KR); Ui Kun Kwon, Hwaseong-si (KR); Young Soo Kim, Seoul (KR); and Dae Geun Jang, Yongin-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jun. 14, 2022, as Appl. No. 17/839,722.
Claims priority of application No. 10-2021-0183193 (KR), filed on Dec. 20, 2021.
Prior Publication US 2023/0190118 A1, Jun. 22, 2023
Int. Cl. A61B 5/021 (2006.01); A61B 5/00 (2006.01); A61B 5/024 (2006.01)
CPC A61B 5/02125 (2013.01) [A61B 5/02416 (2013.01); A61B 5/681 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for estimating blood pressure, the apparatus comprising:
a memory storing one or more instructions; and
a processor configured to execute the one or more instructions to:
extract a cardiac output (CO) feature, a first candidate total peripheral resistance (TPR) feature, and a second candidate TPR feature from a bio-signal;
determine one of the first candidate TPR feature and the second candidate TPR feature as a TPR feature based on a direction of change in the CO feature and a direction of change in the first candidate TPR feature between a blood pressure measurement time and a calibration time; and
estimate the blood pressure based on the TPR feature and the CO feature.