CE EMG Needle Electrode Length: 28mm - Durable and Reliable
Product Name :EMG Needle Electrode
Registered Trademark: Lingan Brand
Product use and scope of application: This product is mainly used
in the field of neurophysiology, by neurologists to record the
human muscle-related electrical activity, and is recommended to be
used in conjunction with electromyography machines.
| Style | Length | Needle diameter | Recorded area | Color | Packaging |
| CNE35-25 | 25mm | 0.35mm | 0.03mm² | Pink | 25pcs/Box |
| CNE45-28 | 28mm | 0.45mm | 0.07mm² | Red | 25pcs/Box |
| CNE45-38 | 38mm | 0.45mm | 0.07mm² | Orange | 25pcs/Box |
| CNE45-50 | 50mm | 0.45mm | 0.07mm² | Black | 25pcs/Box |
| CNE50-60 | 60mm | 0.50mm | 0.07mm² | Yellow | 25pcs/Box |
Electromyography is an electrophysiological examination in which
needle electrodes are inserted into the muscle to record changes in
potential.
The signal of skeletal muscle contraction is the action potential
(AP) of the cell, which can be conducted by volume conductors on
the cell and recorded by extracellular electrodes or body surface
electrodes
EMG in a narrow sense refers exclusively to concentric needle
EMG/conventional EMG.
The identification of EMG needs to be combined with waveform and
sound, and this article analyzes common EMG potentials with respect
to waveform.
The clinical application of conventional EMG is to diagnose and
differentiate neurogenic damage from myogenic damage.
EMG records three main phases of EMG signals: resting, light
contraction and heavy contraction.
Four steps of needle polar electromyography observation
①Insertion of electrical activity: The change in potential caused
when the recording needle is inserted into the muscle.
②When relaxed: observe whether there is abnormal spontaneous
electrical activity in the muscle when it is completely relaxed.
③When contracting lightly: observe the motor unit potential time
frame, wave amplitude, phase and frequency of issue.
④ During vigorous contraction: Observe the type of motor unit
potential raising.
Since EMG activity (in microvolts) is linearly correlated with the
amount of muscle contraction and the number of contracting muscles,
in other words, the more intense the muscle contraction, the
greater the number of motor units in the activated muscle, and the
higher the recorded voltage amplitude.
What is electromyography?
1. Using a myoelectric needle to pierce a muscle and observe the
bioelectric changes in the muscle in different states.
2. Using pulsed current, stimulate the nerves in different parts of
the body and observe the bioelectric changes in the nerves and
their innervated muscles.
3. To reflect the functional state of the nerve muscles
