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Surface electromyographic electrode with amplifying function

An electrode and electromyography technology, which is applied in the field of electrophysiological diagnosis equipment, can solve the problems of weak electromyography signal interference, affecting the quality of surface electromyography signals, and being susceptible to interference by space electromagnetic fields and power frequency alternating current, so as to overcome the problems of signal interference. big difference effect

Inactive Publication Date: 2010-09-15
NCC MEDICAL
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  • Abstract
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Problems solved by technology

However, such a traditional transmission method has many disadvantages in practical applications: due to the high impedance of the surface electromyography signal transmitted by the cable, it is easily interfered by the space electromagnetic field and power frequency alternating current; The bending and movement of the cable will also cause serious interference to the weak EMG signal, affecting the quality of the finally obtained surface EMG signal

Method used

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  • Surface electromyographic electrode with amplifying function
  • Surface electromyographic electrode with amplifying function
  • Surface electromyographic electrode with amplifying function

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Embodiment Construction

[0031] In order to better understand the present invention, the surface electromyographic electrode with amplification function of the present invention will be described in detail below by way of example. Those skilled in the art should understand that this does not constitute a limitation on the embodiments of the invention claimed in this application.

[0032] The system structure system block diagram of surface electromyography electrode of the present invention is as figure 1 shown. The surface electromyography electrode mainly includes a signal acquisition unit, a signal filter unit, a signal amplification unit and a signal output unit. After the surface electromyography signal is extracted from the human body by using the Ag / AgCL surface electromyography electrode, the signal is introduced into the amplifier with preliminary signal processing function. The physical space distance of the first stage of signal processing is reduced to reduce the influence of various int...

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Abstract

The invention discloses a surface electromyographic electrode comprising a signal acquisition unit and having an amplifying function. After the acquisition unit acquires an electromyographic signal, the electromyographic signal is processed by a signal filter unit and a signal amplifying unit in turn, and an expected electromyographic signal is output from a signal output unit; the acquisition unit comprises a signal electrode, a grounding electrode and a reference electrode; the signal filter unit comprises a high-pass filter circuit; and the signal amplifying unit comprises an instrument amplifier. The electromyographic electrode has good anti-jamming capability, can accurately acquire the electromyographic signal, and can well meet the requirements of research and application on the aspect of clinical medicine.

Description

technical field [0001] The invention relates to electrophysiological diagnosis equipment, in particular to a surface myoelectric electrode with amplifying function. Background technique [0002] Electromyography is a method of using electronic instruments to record the point activity of muscles at rest or contraction, and using electrical stimulation to check nerve and muscle excitation and conduction functions. An electromyogram, which depicts the electrical activity of the muscle, is obtained by measuring and recording the electrical potential generated by the muscle with an electromyographic device. Changes in EMG signal activity can, to a large extent, quantitatively reflect and evaluate the local fatigue degree, muscle strength level, muscle activation mode, motor unit excitation conduction speed, multi-muscle group coordination and other muscle functional activities and central control characteristics of muscle activity. change rule. It has important research signifi...

Claims

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Application Information

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IPC IPC(8): A61B5/0492A61B5/296
Inventor 张群峰高俊仕
Owner NCC MEDICAL
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