Method for measuring the degree of edema and apparatus using the same
AssigneeTanita Corporation
InventorsMaki Ishigooka, Yoshinori Fukuda
Life of this patent
Estimating the term…
Abstract
Disclosed is an edema measuring method comprising the steps of: putting at least two pairs of electrodes on different locations selected in the body; making an alternating current to flow in the body via one pair of electrodes; measuring voltage appearing between the other pair of electrodes; calculating impedance on the basis of the supplied alternating current and the measured voltage; and calculating an index value representing the degree of edema on the basis of the impedance. Also, an apparatus using the method is disclosed.
Claims21
An apparatus which is capable of measuring a degree of edema of a person characterized in that it comprises:
- at least two pairs of electrodes to be put on selected locations in the body of the person;
- an alternating current supplying device which supplies alternating current to one pair of the electrodes;
- a voltage measuring device which measures the voltage appearing between the other pair of electrodes;
- an arithmetic unit which calculates impedance on the basis of the supplied alternating current and the determined voltage, and calculates an index value representing the degree of edema on the basis of the so calculated impedance;
- and
- an estimating device which determines the degree of edema the person has from the calculated index value of edema and a body weight or fat free mass of the person.
An apparatus which is capable of measuring a degree of edema of a person characterized in that it comprises:
- at least two pairs of electrodes to be put on selected locations in the body of the person;
- an alternating current supplying device which supplies alternating current to one pair of the electrodes;
- a voltage measuring device which measures the voltage appearing between the other pair of electrodes;
- an arithmetic unit which calculates impedance on the basis of the supplied alternating current and the determined voltage, and calculates a preset index value representing the degree of edema on the basis of the so calculated impedance;
- and
- an estimating device which determines a stage of edema of the person by comparing the preset index value of edema with an average of index values of edema previously calculated.
An apparatus which is capable of measuring a degree of edema of a person characterized in that it comprises:
- at least two pairs of electrodes to be put on selected locations in the body of the person;
- an alternating current supplying device which supplies alternating current to one pair of the electrodes;
- a voltage measuring device which measures the voltage appearing between the other pair of electrodes;
- an arithmetic unit which calculates impedance on the basis of the supplied alternating current and the determined voltage, and calculates an index value representing the degree of edema on the basis of the so calculated impedance;
- and
- a display which shows a series of index values of edema previously calculated, representing how the index value of edema has varied.
An apparatus which is capable of measuring a degree of edema of a person characterized in that is comprises:
- at least two pairs of electrodes to be put on selected locations in the body of the person;
- an alternating current supplying device which supplies alternating current to one pair of the electrodes;
- a voltage measuring device which measures the voltage appearing between the other pair of electrodes;
- an arithmetic unit which calculates impedance on the basis of the supplied alternating current and the determined voltage, and calculates an index value representing the degree of edema on the basis of the so calculated impedance;
- and
- a communication device which transmits to other data processors at least one piece of information selected among measured voltage, measured phase difference, some derivations therefrom, the calculated index value of edema, a determined stage of edema of the person, and personal particulars of the person.
Dependencies are inferred from the claim text.