US 11,925,483 B2
Risk estimation apparatus, risk estimation system, risk estimation method, and non-transitory computer readable recording medium
Chenhui Huang, Tokyo (JP); Kenichiro Fukushi, Tokyo (JP); Yusuke Sekiguchi, Sendai (JP); Haruki Yaguchi, Sendai (JP); Keita Honda, Sendai (JP); Shinichi Izumi, Sendai (JP); and Dai Owaki, Sendai (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on Jun. 29, 2021, as Appl. No. 17/362,498.
Claims priority of application No. 2020-115941 (JP), filed on Jul. 3, 2020.
Prior Publication US 2022/0000431 A1, Jan. 6, 2022
Int. Cl. A61B 5/00 (2006.01); A61B 5/103 (2006.01); G16H 40/67 (2018.01); G16H 50/30 (2018.01)
CPC A61B 5/7275 (2013.01) [A61B 5/1038 (2013.01); A61B 5/6807 (2013.01); G16H 40/67 (2018.01); G16H 50/30 (2018.01); A61B 2562/0247 (2013.01); A61B 2562/04 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A risk estimation apparatus comprising:
at least one memory configured to store instructions; and
at least one processor configured to execute the instructions to:
acquire measured data indicating a time variation of foot pressures of a left foot and a right foot obtained by sensors that are provided in shoes and measure the foot pressures;
identify a starting timing and an ending timing of a stance phase of each of the left foot and the right foot from the measured data of the time variations of the foot pressures;
estimate asymmetry between the foot pressures of the left foot and the right foot based on a local maximum value and a local minimum value of the measured data of the time variation of the foot pressures collected during the correspondence stance phase; and
estimate a risk of abnormality of a lower limb on the basis of the asymmetry.