DEVICE FOR SELECTING QRS-COMPLEXES Russian patent published in 1994 - IPC

FIELD: medical equipment. SUBSTANCE: device has switch element 7 which has input to be input of the device. Output of element 7 is connected to input of frequency filter 1. Output of the latter is connected with the first input of comparator 3 and with input of peak detector 2 which load in form of a resistance controlled electrically. Output of peak detector 2 is connected with the second input of comparator 3. Output of the latter is connected with the first univibrator 4. Output of the univibrator is connected with input of the second univibrator 8 and with control input of peak detector 2 and control input of the second univibrator 8 through lower frequency active filter 5. Output of univibrator 8 is connected to control input of switch element 7. Output of the first univibrator has to be output of the device. EFFECT: improved noise immunity. 2 dwg