CARDIOQVARK CARDIAC MONITOR SCHEME Russian patent published in 2017 - IPC A61B5/408 

FIELD: medicine.

SUBSTANCE: device for obtaining a cardiogram contains capacitive sensors of the electric field installed on the housing. A potentiometre and the first stage of a differential amplifier with a common-mode filter are connected to the capacitive sensors, receiving a signal from the capacitive sensors of the electric field and the bias voltage from the potentiometre. The first stage is connected to the second stage of the differential amplifier with the common-mode filter, which is connected to an analog-to-digital converter (ADC) driver, which transmits signals to the first and second inputs of a two-channel ADC with the common-mode filter in parallel. The device contains a trigger for data reception control from the ADC to a controller which receives signals from the power monitor connected to the logical switching unit of the USB port and is connected to the ADC, to the potentiometer and to the DC power supply with interference-suppression filters, a crypto processor, a USB port switching logic unit and a USB port hub connected to the DC power supply, the logical switching unit of the USB port and an overvoltage protection unit of the USB port, and receiving signals from the power monitor connected to the logical switching unit of the USB port.

EFFECT: increased accuracy and reliability of measurements, reliability of received information on cardiac activity and simplified design.

6 cl, 1 dwg