DEVICE FOR DETERMINATION OF CUTANEOUS BLOOD FLOW Russian patent published in 1999 - IPC

FIELD: medicine, applicable for functional diagnosis. SUBSTANCE: the device comprises a calibrator, sounding current generator connected to a pair of electrodes, impedance-to-voltage converter, indicator. The sounding current generator is connected in the circuit generator of square pulses stabilized in amplitude, each of the two electrodes is separated into current and potential ones; the current electrodes are external ones with respect to the potential ones. Connected in series to the potential electrodes are the impedance-to- voltage converter, the first passive high-pass filter, the first active low-pass filter and analog differentiator. Besides, use is made of an additional pair of electrodes for picking up biopotentials, connected in series to this pair of electrodes are the instrument amplifier, the second passive high-pass filter, the second active low-pass filter and the final amplifier. The calibrator is connected to the inputs of the first and second active low-pass filters. EFFECT: enhanced accuracy of measurements of the condition of blood circulation of human integument. 1 dwg