DEVICE FOR CONTROLLING ANISOTROPY OF ELECTRIC CONDUCTIVITY OF BIOTISSUES Russian patent published in 2014 - IPC A61B5/53 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment. Device for measuring impedance of biological tissues contains successively connected matrix of N electrodes, commutation unit, instrument amplifier, detector unit, multi-channel ADC, microcontroller and PC. First and second digital-analogue converters, power amplifier and unit of current measurement are included into device. Commutation unit includes two analogue multiplexors and two analogue demultiplexors. N analogous inlets of each multiplexor are connected with respective N electrodes of electrode matrix, and N analogue outlets of each demultiplexor are connected with respective N electrodes of electrode matrix. Address inlets of either of two multiplexors and two demultiplexors are connected respectively with first four microcontroller outlets. First outlet of first multiplexor is connected with first inlet of instrument amplifier. Outlet of second multiplexor is connected with second inlet of instrument amplifier. Inlet of first demultiplexor is connected with first outlet of power amplifier. Inlet of second demultiplexor is connected with first outlet of current measurement unit.

EFFECT: application of the invention will make it possible to increase accuracy of measurement of electric conductivity of biotissues with change of probing current direction.

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