Risk estimation apparatus, risk estimation system, risk estimation method, and non-transitory computer readable recording medium

Patent metadata

Field	Value
Publication number	US-2022000431-A1
Application number	US-202117362498-A
Country	US
Kind code	A1
Filing date	Jun 29, 2021
Priority date	Jul 3, 2020
Publication date	Jan 6, 2022
Grant date	—

Abstract

A risk estimation apparatus includes a data acquisition unit that acquires measured data of foot pressures of the left foot and the right foot obtained by sensors that are provided in shoes and measure the foot pressures, a stance phase identification unit that identifies 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 foot pressures, and a risk estimation unit that estimates a risk of abnormality of a lower limb on the basis of asymmetry between the foot pressures of the left foot and the right foot during the stance phase.

First claim

What is claimed is:

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 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 foot pressures; and estimate a risk of abnormality of a lower limb on the basis of asymmetry between the foot pressures of the left foot and the right foot during the stance phase.

2 . The risk estimation apparatus according to claim 1 ,
wherein the processor is configured to acquire the measured data of the foot pressures on a heel side and a toe side of each of the left foot and the right foot; and estimate the risk of the abnormality of the lower limb on the basis of the asymmetry between the foot pressures on the heel side and the toe side of the left foot and the right foot during the stance phase.

3 . The risk estimation apparatus according to claim 1 ,
wherein the processor is configured to estimate the risk of the abnormality of the lower limb on the basis of the asymmetry between the foot pressures of the left foot and the right foot during the stance phase of each of the left foot and the right foot in which parts of measurement periods temporally overlap each other.

4 . A risk estimation system comprising:
sensors that are provided in shoes and measure foot pressures of a left foot and a right foot; at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: identify a starting timing and an ending timing of a stance phase of each of the left foot and the right foot from measured data of the foot pressures; and estimate a risk of abnormality of a lower limb on the basis of asymmetry between the foot pressures of the left foot and the right foot during the stance phase.

5 . A risk estimation method comprising:
acquiring, by a risk estimation apparatus, measured data of foot pressures of a left foot and a right foot obtained by sensors that are provided in shoes and measure the foot pressures; identifying, by the risk estimation apparatus, 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 foot pressures; and estimating, by the risk estimation apparatus, a risk of abnormality of a lower limb on the basis of asymmetry between the foot pressures of the left foot and the right foot during the stance phase.

6 . A non-transitory computer-readable recording medium that records a program for causing a computer to execute the risk estimation method according to claim 5 .

Assignees

• Nec Corp

Inventors

• Huang Chenhui
• Fukushi Kenichiro
• Sekiguchi Yusuke
• Yaguchi Haruki
• Honda Keita
• Izumi Shinichi
• Owaki Dai

Classifications

• A61B5/6807

  Footwear · CPC title

• A61B5/112

  Gait analysis · CPC title

• A61B5/1038

  Measuring plantar pressure during gait · CPC title

• A61B2562/04

  Arrangements of multiple sensors of the same type · CPC title

• A61B5/7275 Primary

  Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor · CPC title