Patent ID: 8271079
Filing Date: 2012-09-18
Classification: A61B

Abstract:
1. 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, wherein the first current source comprises a first ground and the second current source comprises a second ground which is electrically decoupled from the first ground, wherein the voltage signals are measured from the first set of voltage measuring electrodes with respect to the first ground, wherein the second set of voltage signals are measured are measured from the second set of voltage measuring electrodes with respect to the second ground.