Patent ID: 8666485
Filing Date: 2014-03-04
Classification: A61B

Abstract:
1. A body composition monitor for measuring whole-body composition of a subject, comprising: a plurality of hand electrodes and a plurality of foot electrodes; a detection portion for detecting a first potential difference between a hand and a foot by applying a current across the hand and the foot of said subject through both of said hand electrode and said foot electrode and detecting a second potential difference between both hands or between both feet by applying a current across said both hands or across said both feet of said subject through any one of said hand electrodes and said foot electrodes; and a controller configured to calculate first whole-body composition using whole-body impedance based on a result of detection of said first potential difference, correct two-limb impedance based on a result of detection of said second potential difference, calculate second whole-body composition using the corrected two-limb impedance, calculate a third whole-body composition of said subject based on said two-limb impedance based on said second potential difference detected in detection of said first potential difference, body information of said subject, and a prescribed second estimation equation showing a relation among said two-limb impedance, said body information and said whole-body composition, and calculate a correction value for said two-limb impedance that said first whole-body composition is equal to said third whole-body composition; store data of said correction value as correlation information in a storage portion, determine whether a differential value between said first whole-body composition and said third whole-body composition is equal to or smaller than a prescribed threshold value, calculate said first whole-body composition of said subject based on said whole-body impedance, the body information of said subject, and a prescribed first estimation equation showing a relation among said whole-body impedance, said body information and said whole-body composition, and calculate said correction value based on a determination that said differential value exceeds said threshold value.