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EMG DEVICE | ELECTROMYOGRAPH (EMG) SYSTEM | EMG SYSTEM

NS-EMG-C-1 is a digital EMG device. It acquires, stores and review up to 4 channels of EMG data and 2 channels evoked potential (EP) channels. It can perform routine EMG system recording, EP, as well as nerve conductive velocity (NCV) diagnostic examination.

emg device

SYSTEM KEY FEATURES

  • Pre-amplifier operable with up to 4 EMG channels.
  • High quality signal with reduced power line interference.
  • Modular design enabling different combinations for different examinations.
  • Ability to convert EMG format to surface EMG format.
  • Offering 3 standard EMG modules, 4 EP modules and 8 NCV modules.
  • Free software update for registered devices.
  • Customizable system components for stationary of portable system set-up.

 

software key features

  • User-friendly software interface EMG device.
  • Easy to understand illustrations of electrode placements, stimulation positions and standard waveforms.
  • Easy access to waveform data comparison.
  • Ability to replay, review and generate reports for past cases.
  • Available normal values for result analysis.

1. AMPLIFIER PARAMETERS

  •  Display Sensitivity: 0.05μV/div ~ 20,000μV/div, ±10% error. No precision requirements below 50μV/div.
  • Frequency-Amplitude Characteristics: 0.2Hz ~10kHz, error is +10% ~ –50% between 0.2Hz ~ ≤0.5Hz, and error is +5% ~ –30% between > 0.5Hz ~10kHz.
  • Scan Speed: 1ms/div ~ 5000ms/div; error = ±10%;
  • High-Pass Filter: 10Hz ~ 20,000Hz; error = +10% ~ –30%;
  • Low-Pass Filter: 0.1Hz ~ 5000Hz; error = +10% ~ –30%.
  • Common Mode Rejection Ratio: ≥110dB;
  • Input Impedance: ≥1000MΩ;
  • Noise Voltage:= 0.4μV (RMS);
  • Resistance to Polarization Voltage: At ±300mV DC polarization voltage, bias is ≤5%.

2. CURRENT STIMULATION PARAMETERS

  • Current Pulse Output Intensity: Maximum output 100mA; at 0mA ~ 4mA, step difference is 0.01mA. Error = ±10%;
  • Pulse Output Frequency: 0.1Hz ~120Hz, error = ±10%;
  • Target Pulse Width: 50μS, 100μS, 200μS, 300μS, 500μS, 1000μS; error = ±10%;
  • Stimulus Direction: Positive, Negative, and Two-Way.

3. AUDIO AND VISUAL STIMULATION PARAMETERS

A. Normal Mode (Acoustic Stimulation) Parameters

 

  • Stimulation Type: Short Tone, Pure Tone, White Noise.
  • Stimulation Frequency: 0.1Hz ~100Hz, error = ±10%;
  • Target Signal Probability: 5% ~ 100%, error = ±10%;
  • Stimulation Model (for Short Tone and Pure Tone only): Left Ear, Right Ear, Both Ears, Alternate Ears.
  • Short Tone Only
    • Short Tone Stimulation Phase: Sparse Wave, Dense Wave, Alternating Waves;
    • Maximum Short Tone Intensity: approx. 130dB;
  • Pure Tone only
    • Maximum Pure Sound Intensity: approx. 120dB;
    • Pure Tone Sound Frequency: 250Hz ~7kHz, error = ±10%;
  • White Noise only
    • Maximum White Noise Intensity: approx. 100dB;

B. MULTI-FREQUENCY AUDITORY STEADY-STATE RESPONSE (ASSR) AUDIO STIMULATION PARAMETERS

 

  • Modulation Type: AM/FM
  • Audio Stimulation Intensity: -10dB ~ 130dB HL (Hearing Level), error within ±10%;
  • Carrier Frequency: 250Hz ~ 8000Hz, error within ±10%;
  • Modulation Frequency: 20Hz ~ 200Hz, error within ±20%;
  • Degree of AM: 0% ~ 100%, error within ±30%;
  • Degree of FM: 0% ~ 30%, error within ±30%;
  • AM/FM Phase Difference: 0 ~ 359 degrees, error within ±30%;

     

    C. VIDEO CONTROL OUTPUT SIGNAL (VISUAL STIMULATION)

     

    • Checkerboard Image
      • Monitor can be set to display full-screen checkerboard image with alternating black-and-white tiles.
      • Checkerboard display can be 4X3, 8X6, 16X12, 32X24, or 64X48.
      • Half-screen checkerboard display:
        • Left-half or right-half of screen: 2X3, 4X6, 8X12, 16X24, or 32X48 pattern,
        • Upper or lower half of screen: 4X2, 8X3, 16X6, 32X12, or 64X24 pattern
      • Quarter checkerboard display: 2X2, 4X3, 8X6, 16X12, or 32X24 checkerboard pattern.
    • Horizontal Bar Grid Image
      • Full-screen black-and-white horizontal bar image: 1X3, 1X6, 1X12, 1X24 and 1X48
      • Left-half or right-half of screen only: 1X3, 1X6, 1X12, 1X24 and 1X48;
      • Top or bottom half of screen only: 1X2, 1X3, 1X6, 1X12 and 1X24,
      • Quarter screen display: 1X2, 1X3, 1X6, 1X12 and 1X24.
    • Vertical Bar Grid Image
      • Full-screen black-and-white alternating vertical bars: 4X1, 8X1, 16X1, 32X1, and 64X1
      • Left half or right-half of screen only: 2X1, 4X1, 8X1, 16X1 and 32X1
      • Top or bottom half of screen only: 4X1, 8X1, 16X1, 32X1 and 64X1
      • Quarter screen display: 2X1, 4X1, 8X1, 16X1, and 32X1.
    • Stimulation Frequency: 0.1Hz – 1Hz, error = ± 10%;
    • Target Signal Probability (P300 only): 5% ~ 100%, error = ± 10%;
    • Non-target signal 1 Probability (P300 only): 5% ~ 100%, error = ± 10%;
    • Non-target signal 2 Probability (P300 only): 5% ~ 100%, error = ± 10%.

    D. Goggles (Visual Stimulation)

    • Stimulus Frequency: 0.1Hz – 50Hz, error = ± 10%;
    • Stimulation Modes: Left Eye, Right Eye, Both Eyes, Alternate Eyes.

     

    Evoked Potential (EP)

    This subtype in EMG device provides Evoked Potential (EP) for examination of patients on top of Quantitative EMG.

    ep eXAMINATION PROtocols features in emg device

    1. Auditory Evoked Potential (AEP):
      • BAEP
      • LAEP
      • MAEP
      • EcochG
      • 40Hz
    2. Visual Evoked Potential (VEP)
      • EOG
      • ERG
      • FVEP
      • PRVEP
    3. Somatosensory Evoked Potential (SEP)
      • LSEP
      • SCEP
      • TSEP
      • USEP
    4. Cognitive Evoked Potential (VEP)
      • MMN
      • N400
      • P300

     

    Nerve Conduction Velocity (NCV)

    This subtype in EMG device provides Nerve Conduction Velocity (NCV) diagnostic examination capability on top of EMG examination. 

    ncv eXAMINATION PROtocols in emg device

    1. Waveform caching function enables saving of multiple waveform with the same examination point.

    2. Screen display of individual F-wave, H-wave and overlay.

    3. Display of latency and amplitude values with measurement lines for easy  reference.

    4.  Various examination protocols available:

    • Motor NCV (MCV)
    • Sensory NCV (SCV)
    • Repetitive Nerve Stimulation (RNS)
    • Short Segment Conduction (SSCT)
    • Sympathetic Skin Response (SSR)
    • F-wave
    • H-reflex
    • Blink Reflex (BR)

     

     

    EMG Device

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