US 12,011,251 B2
Apparatus and method for estimating bio-information
Hye Rim Lim, Suwon-si (KR); Sang Yun Park, Hwaseong-si (KR); Jin Woo Choi, Suwon-si (KR); and Jae Min Kang, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Dec. 23, 2020, as Appl. No. 17/132,230.
Claims priority of application No. 10-2020-0087568 (KR), filed on Jul. 15, 2020.
Prior Publication US 2022/0015650 A1, Jan. 20, 2022
Int. Cl. A61B 5/021 (2006.01); A61B 5/00 (2006.01); A61B 5/02 (2006.01); A61B 90/00 (2016.01)
CPC A61B 5/02116 (2013.01) [A61B 5/0033 (2013.01); A61B 5/02007 (2013.01); A61B 5/7475 (2013.01); A61B 90/06 (2016.02); A61B 2090/065 (2016.02)] 24 Claims
OG exemplary drawing
 
14. A method of estimating bio-information, the method comprising:
measuring a pulse wave signal from an object;
measuring a first force exerted between the object and a pulse wave sensor;
converting the first force into a second force, based on structure information of the object; and
estimating the bio-information based on the pulse wave signal and the second force,
wherein the structure information of the object comprises at least one of a blood vessel position, a blood vessel depth, and a bone depth, and
wherein the converting of the first force comprises converting the first force, based on at least one of a ratio between the blood vessel depth and the bone depth and a difference between the blood vessel depth and the bone depth.