US 12,114,963 B2
Apparatus and method for estimating bio-information
Sang Yun Park, Hwaseong-si (KR); Hye Rim Lim, Suwon-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. 29, 2020, as Appl. No. 17/136,150.
Claims priority of application No. 10-2020-0097919 (KR), filed on Aug. 5, 2020.
Prior Publication US 2022/0039666 A1, Feb. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/0205 (2006.01); A61B 5/00 (2006.01); A61B 5/02 (2006.01); A61B 5/021 (2006.01); A61B 5/16 (2006.01)
CPC A61B 5/0205 (2013.01) [A61B 5/02007 (2013.01); A61B 5/165 (2013.01); A61B 5/442 (2013.01); A61B 5/6843 (2013.01); A61B 5/742 (2013.01); A61B 5/02108 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An apparatus for estimating bio-information, the apparatus comprising:
a pulse wave sensor including a plurality of channels, and configured to measure pulse wave signals at a plurality of points of an object; and
a processor configured to:
generate oscillograms corresponding to the plurality of channels based on the pulse wave signals measured by the plurality of channels;
determine a channel, from among the plurality of channels, for estimating the bio-information based on the oscillograms; and
estimate the bio-information based on an oscillogram of the channel, wherein the processor is further configured to:
exclude a channel, the excluded channel having an oscillogram which does not satisfy predetermined criteria;
wherein the excluded channel corresponding to the oscillogram is excluded when a full width at half maximum (FWHM) between a contact pressure at an onset point and a contact pressure at a half-maximum point of the oscillogram is greater than or equal to a predetermined threshold value, or a width at a point corresponding to a predetermined ratio between the onset point and the maximum point of the oscillogram is greater than or equal to a predetermined threshold value; and
determine the channel based on remaining oscillograms of remaining channels, wherein the processor is further configured to:
obtain a plurality of estimated mean arterial pressure (MAP) values respectively corresponding to the plurality of channels based on the oscillograms;
determine the channel based on the estimated MAP values; and
determine a predetermined number of channels in an order of magnitude of the MAP values.