Anti-jamming circuit for myoelectricity evoked potential diagram instrument

Abstract

The invention relates to an anti-jamming circuit for a myoelectricity evoked potential instrument diagram, comprising a transient voltage protection circuit, a high frequency interference filtration circuit, a dual-circuit symmetrical preamplifier, a high pass filtration circuit, a differential mode amplification circuit of a program control meter, a program control high pass filtration circuit, a program control amplification circuit, a program control low pass filtration circuit, an anti-aliasing filtration circuit, a selective power frequency trapped wave circuit, an AD conversion circuit and a single chip microcomputer; and the single chip microcomputer also controls and connects a visual stimulator, a sound stimulator, a spark stimulator and a current stimulator, wherein the visual stimulator is digitally isolated from the single chip microcomputer, and the current stimulator and the single chip microcomputer are in photoelectric isolation. The invention has the beneficial effects that the circuit adopts a humanistic design idea, and uses a computer system to control the visual stimulator, the sound stimulator, the spark stimulator and the current stimulator to detect a detection position of an object; a multistage amplification circuit and a multistage filtration circuit are internally arranged in the anti-jamming circuit; and the anti-jamming circuit applies an isolation technology, thereby effectively inhibiting common-mode interference, improving the anti-jamming capability and the measurement precision of the myoelectricity evoked potential diagram instrument.

Description

technical field [0001] The invention relates to an anti-jamming circuit of a myoelectric evoked potential graph instrument; the circuit adopts a humanized design concept and is easy to operate, and a computer system controls a visual stimulator, a sound stimulator, a flash stimulator and a current stimulator to stimulate the detection part of a detection object , improve the anti-interference ability and measurement accuracy of the electromyographic evoked potential graph. Background technique [0002] Myoelectric Evoked Potentials is a medical instrument that continuously monitors the patient's muscle and nerve waves. It has become a routine configuration device for muscle and nerve disease examinations in hospitals. Lesions, detect subclinical lesions, and accurately locate lesions. Clinically, it is widely used in neurosurgery, hand surgery, orthopedics, forensic identification and other departments. At present, most of the domestic products are bulky, complicated to op...

AI Technical Summary

Problems solved by technology

At present, most domestic products are bulky, complicated to operate and lack of humanized design concept, making it difficult for doctors to test patients

The anti-interference ability is not strong, and the detected signal is easily interfered, so that it is difficult for doctors to grasp the condition of the disease and delay the diagnosis and treatment time of patients

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