Body composition monitor capable of accurately measuring whole-body composition and achieving facilitated manipulation
First Claim
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 tocalculate 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, andcalculate 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, andcalculate said correction value based on a determination that said differential value exceeds said threshold value.
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Accused Products
Abstract
A detection portion for detecting a first potential difference between hand and foot by applying a current across the hand and the foot of a subject through both of a hand electrode and a foot electrode and detecting a second potential difference between both hands or between both feet by applying a current across both hands or across both feet of the subject through any one of the hand electrodes and the foot electrodes, a first body composition calculation portion for calculating a first whole-body composition by using whole-body impedance based on a result of detection of the first potential difference, a correction portion for correcting two-limb impedance based on a result of detection of the second potential difference, and a second body composition calculation portion for calculating a second whole-body composition by using the corrected two-limb impedance are included.
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Citations
31 Claims
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1. A body composition monitor for measuring whole-body composition of a subject, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 11, 12, 13, 19)
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6. A body composition monitor, comprising:
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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 said two-limb impedance corrected by said correction portion, 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, 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, and 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 estimation equation showing relation among said whole-body impedance, said body information and said whole-body composition, calculate said correction value based on a determination that said differential value exceeds said threshold value, and calculate a correlation between said whole-body impedance and said two-limb impedance based on said second potential difference detected in detection of said first potential difference. - View Dependent Claims (7, 8, 9, 10, 14, 15, 16, 17, 18)
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20. A body composition monitor for measuring whole-body composition of a subject, comprising:
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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 both said feet of said subject through any one of said hand electrodes and said foot electrodes; a time keeping portion for keeping time; 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; calculate second whole-body composition using two-limb impedance based on a result of detection of said second potential difference; correct calculated said second whole-body composition based on correlation information representing relation between said first whole-body composition and said second whole-body composition; determine a time zone of a day based on data output from said time keeping portion, calculate correlation between said first whole-body composition and said second whole-body composition based on said second potential difference detected in detection of said first potential difference, and a storage portion for storing correlation data representing said correlation as said correlation information, wherein said storage portion stores said correlation data in association with the time zone in which said first potential difference is detected, said correlation information is stored in said storage portion in association with time and day when said correlation information was set, the controller is further configured to determine whether a prescribed time period has elapsed since said time and day stored in said storage portion, when execution of processing for second body composition calculation portion is selected, and notify said subject of prohibition of use in a mode corresponding to execution of the processing for second body composition calculation when it is determined that said time period has elapsed. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A body composition monitor for measuring whole-body composition of a subject, comprising:
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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 both said feet of said subject through any one of said hand electrodes and said foot electrodes; a time keeping portion for keeping time; a storage portion for storing data; 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; calculate second whole-body composition using two-limb impedance based on a result of detection of said second potential difference; correct calculated said second whole-body composition based on correlation information representing relation between said first whole-body composition and said second whole-body composition; determine a time zone of a day based on data output from said time keeping portion, calculate correlation between said first whole-body composition and said second whole-body composition based on said second potential difference detected in detection of said first potential difference, and store correlation data representing said correlation as said correlation information in association with a time in which said first potential difference is detected, said correlation information is stored in said storage portion in association with time and day when said correlation information was set, the controller is further configured to determine whether a prescribed time period has elapsed since said time and day stored in said storage portion, when execution of processing for second body composition calculation portion is selected, and notify said subject of prohibition of use in a mode corresponding to execution of the processing for second body composition calculation when it is determined that said time period has elapsed.
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Specification