Patent ID: 8195285
Filing Date: 2012-06-05
Classification: A61B,G06K

Abstract:
1. Sensor assembly for determining the condition of a structure so as to confirm whether the structure is constituted by skin and living tissue, the sensor assembly comprising: at least four electrodes, of which wherein said sensor assembly is adapted to alter which electrodes constitute current supply electrodes and/or which electrodes constitute pickup electrodes between different measurements so as to alter the distance(s) between the current supply electrodes and/or the pickup electrodes to thereby alter the depths of the structure at which the measurements are performed; wherein said sensor assembly is further adapted to (1) store a predetermined set of values characteristic of at least one certain condition of the structure, and (2) compare the at least one measured parameter value with the predetermined set of values for determining whether the structure is in said certain condition; wherein said sensor assembly is adapted to measure the impedance at each pickup electrode, and wherein said sensor assembly is adapted to compare imaginary and real parts of impedance signals as functions of the applied frequency.