ARTERIAL BLOOD PULSATION RECORDER Russian patent published in 2014 - IPC A61B5/295 A61B5/1455 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment. An arterial blood pulsation recorder comprises a pulse generator, a light source, a photoelectric receiver, a current-to-voltage converter, an AC voltage amplifier, a synchronous decoder, and a band-pass filter. The device additionally comprises an accelerometer, an analogue-to-digital converter, a microcontroller, an adaptive filter, a subtracting unit. An output of the band-pass filter is connected to the first input of the analogue-to-digital converter; an output of the accelerometer is connected to the second input of the analogue-to-digital converter; an output of the analogue-to-digital converter is connected to an input of the microcontroller; the first output of the microcontroller is connected to the first input of the subtracting unit; the second output of the microcontroller is connected to the first input of the adaptive filter; an output of the subtracting unit is connected to the second input of the adaptive filter; an output of the adaptive filter is connected to the second input of the subtracting unit.

EFFECT: using the invention enables higher noise resistance of the individual's arterial blood pulsation recording signal with underlying motion artefacts caused by random motions of the person being tested.

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