DEVICE FOR MEASURING THE MAGNETIC FIELD OF SKELETAL MUSCLES WHEN DETERMINING MUSCULAR ACTIVITY Russian patent published in 2018 - IPC A61B5/00 A61B5/04 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely to the magnetomiographic recording of signals of human bioelectrical activity. Device for measuring the magnetic field of skeletal muscles when determining muscle activity contains two measuring channels, each of which includes a high-sensitivity magnetoresistive sensor and differs in the fact that in each of the measuring channels a high-pass filter with a cutoff frequency of 10 Hz, a low-noise precision amplifier and a low-pass filter with a cutoff frequency of 500 Hz are connected in series to the high-sensitivity magnetoresistive sensor, while the low-pass filter of one channel is connected to the non-inverting input of the differential op-amp, and the low-pass filter of the other channel is connected to the inverting input of the differential op-amp.

EFFECT: use of the invention widens the range of means for recording muscular activity.

1 cl, 2 dwg