FIELD: medical engineering. SUBSTANCE: device has control unit, controllable power supply source unit, oscillators of high and low frequency connected via the first and the second current gages, via the first and the second voltage gages and units for calculating high and low frequency impedances to active and passive electrodes. The units for calculating impedance are connected to unit for calculating polarization after Turusov connected to monitor via comparison unit. The second input of comparison unit is connected to permanent memory unit. EFFECT: enhanced effectiveness in determining biological tissue characteristics in the course of surgical intervention; high accuracy in differentiating healthy and ill tissues. 1 dwg
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