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US 2010/0249640 A1Published application
Method of analyzing body composition with measurement of voltage signals at multiple positions of body
AssigneeBiospace Co., Ltd.
InventorsKI CHUL CHA, CHANG RYOUL YANG
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Abstract
A method of analyzing a composition of a human body having a plurality of body segments is disclosed. The method can include applying a current signal to a body. The method can further include simultaneously measuring a plurality of voltage signals from a plurality of measuring positions of the body during a predetermined period, and processing at least two of the plurality of voltage signals to determine a composition parameter of a body segment so as to assess or analyze composition of the body.
Claims24
A method of assessing composition of a body, the method comprising:
- establishing contact of a first extremity current electrode with a first extremity;
- establishing contact of a first extremity voltage electrode A and a first extremity voltage electrode B with the first extremity;
- establishing contact of a second extremity current electrode with a second extremity;
- establishing contact of a second extremity voltage electrode A and a second extremity voltage electrode B with the second extremity;
- establishing contact of a third extremity current electrode with a third extremity;
- establishing contact of a third extremity voltage electrode A and a third extremity voltage electrode B with the third extremity;
- establishing contact of a fourth extremity current electrode with a fourth extremity;
- establishing contact of a fourth extremity voltage electrode A and a fourth extremity voltage electrode B with the fourth extremity;
- applying a current signal between the first extremity current electrode and the second extremity current electrode;
- applying another current signal between the third extremity current electrode and the fourth extremity current electrode;
- measuring voltages at the first extremity voltage electrode A, at the second extremity voltage electrode A, at the third extremity voltage electrode A, and at the fourth extremity voltage electrode A;
- measuring voltages at the first extremity voltage electrode B, at the second extremity voltage electrode B, at the third extremity voltage electrode B, and at the fourth extremity voltage electrode B;
- processing the measured voltages at the first extremity voltage electrode A, at the second extremity voltage electrode A, at the third extremity voltage electrode A, and at the fourth extremity voltage electrode A, which provides a first value representing impedance of a first one of a plurality of predetermined segments of the body;
- processing the measured voltages at the first extremity voltage electrode B, at the second extremity voltage electrode B, at the third extremity voltage electrode B, and at the fourth extremity voltage electrode B, which provides a second value representing impedance of a second one of the plurality of predetermined segments;
- and
- assessing composition of the body using the first and second values.
13 more elements
An apparatus for assessing composition of a body, the apparatus comprising:
- a first extremity current electrode for contacting a first extremity;
- a second extremity current electrode for contacting a second extremity;
- a third extremity current electrode for contacting a third extremity;
- a fourth extremity current electrode for contacting a fourth extremity;
- a first current source configured to provide a first current signal between the first extremity current electrode and the second extremity current electrode;
- a second current source configured to provide a second current signal between the third extremity current electrode and the fourth extremity current electrode;
- a first extremity voltage electrode A for contacting the first extremity;
- a second extremity voltage electrode A for contacting the second extremity;
- a third extremity voltage electrode A for contacting the third extremity;
- a fourth extremity voltage electrode A for contacting the fourth extremity;
- a voltage measuring circuit A configured to measure voltages at the first extremity voltage electrode A, at the second extremity voltage electrode A, at the third extremity voltage electrode A, and at the fourth extremity voltage electrode A;
- a first extremity voltage electrode B for contacting the first extremity;
- a second extremity voltage electrode B for contacting the second extremity;
- a third extremity voltage electrode B for contacting the third extremity;
- a fourth extremity voltage electrode B for contacting the fourth extremity;
- a voltage measuring circuit B configured to measure voltages at the first extremity voltage electrode B, at the second extremity voltage electrode B, at the third extremity voltage electrode B, and at the fourth extremity voltage electrode B;
- one or more processing circuits configure to process the measured voltages at the first extremity voltage electrode A, at the second extremity voltage electrode A, at the third extremity voltage electrode A, and at the fourth extremity voltage electrode A, which provides a first value representing impedance of a first one of a plurality of predetermined segments of the body;
- the one or more processing circuits further configured to process the measured voltages at the first extremity voltage electrode B, at the second extremity voltage electrode B, at the third extremity voltage electrode B, and at the fourth extremity voltage electrode B, which provides a second value representing impedance of a second one of the plurality of predetermined segments;
- and
- the one or more processing circuits further configured to assess composition of the body using the first and second values.
17 more elements
A method of analyzing composition of a body, the method comprising:
- establishing contact of current electrodes with four extremities, a first one of the current electrodes contacting a first extremity, a second one of the current electrodes contacting a second extremity, a third one of the current electrodes contacting a third extremity, a fourth one of the current electrodes contacting a fourth extremity;
- establishing contact of a first set of voltage measuring electrodes with the four extremities, each extremity contacting one of the first set of voltage measuring electrodes;
- establishing contact of a second set of voltage measuring electrodes with the four extremities, each extremity contacting one of the second set of voltage measuring electrodes;
- applying a first current signal between the first and second current electrodes using a first current source;
- simultaneously with applying of the first current signal, applying a second current signal between the third and fourth electrodes using a second current source which is electrically decoupled from the first current source;
- simultaneously measuring voltage signals from the first set of voltage measuring electrodes with a first voltage measuring circuit;
- simultaneously measuring voltage signals from the second set of voltage measuring electrodes with a second voltage measuring circuit, wherein the second voltage measuring circuit is electrically decoupled from the first voltage measuring circuit;
- and
- processing the measured voltage signals from the first set of voltage measuring electrodes to determine a composition parameter of a first portion of the body, and further processing the measured voltage signals from the second set of voltage measuring electrodes to determine a composition parameter of a second portion of the body, wherein the composition of the body is assessed using at least the determined composition parameters.
6 more elements
Dependencies are inferred from the claim text.