EMG

ELECTROMYOGRAM (EMG) SYSTEM

EMG

ELECTROMYOGRAM (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 recording, EP, as well as nerve conductive velocity (NCV) diagnostic examination.

Download PDF
Dimensions & Weights
size Size: L310 xW250 X H55 mm
Amplifier Weight 2 Kg (approx)
Environmental
Operating temperature: -40 to +40 C
Humidity: <=90%
Atmospheric pressure: 960hPa to 1060hPa
Power Supply
Input: Input: 100–240V AC+/ – 10% @50Hz/60Hz
Power consumption: Amplifier < 2 Watt
Performance
Performance Support 1280X800, 1280X1024, 1366X768 Pixels colour display
Display area: 17 inch (depending on the computer configuration)
Language: English
Report: Print single page, print combined reports, print data and waves, print colour reports.
Technical Parameters
Amplifiers
Channel s: 2/4
Gain: 0.05μV /div -20KμV /div in variable steps.
Error of Gain: <=10% for 50, 100, 200, 500, 1K, 2K, 5K, 10K, 20K μV/div
Low Frequency: 0.1Hz -5KHz in variable steps.
High Frequency: 10 Hz-20KHz in variable steps.
Notch Filter: 50 or 60 Hz
Input impedance: >1000MΩ
Noise : ≤0.4μV (Vp-p)
Amplitude calibration: 1 microV -10 MilliV
CMRR: >=110bB
Sampling Rate: 200kHz
A/D Conversion Rate: 24 bit
Electrical Stimulator
Output intensity: 0-100mA.
Stimulus frequency: 0.1Hz-120 Hz
Duration: 50 – 1000μS in variable steps
Stimulus mode: Single, paired, repetitive
Normal Auditory Stimulator
Stimulus type: Click, Pure tone, customized tone
Maximum intensity: >=130dB for click tone, >=120 dB for pure tone
Stimulus frequency: 0.1Hz-100 Hz
ASSR Auditory Stimulator
Stimulus intensity: 10-130 dB
Carrier frequency: 250 Hz -8K Hz
Modulation frequency: 20Hz-200Hz
Visual Stimulator
Stimulus intensity: 0-100mA.
Stimulus frequency: 0.1Hz-10 Hz
Stimulus graphics: bars, checkerboard grid, customised pictures
Pattern size: 4X3, 8X6, 16X12, 32X24, 64X48
System Modules
Acquisition Module: Display the EMG waves on screen and record them on recording media.
System Setting Module: Set system parameters.
File Management Module: help to manage EMG related files, including file search, deleting, copying, patient registration and editing.
Review Module: Reply the saved EMG waves.
Calibration Module: Calibrate the amplifier’s output data.

1. Electromyography (EMG):

  • Motor Unit Potential (MUP)
  • Interference Phase (IP)
  • Scanning EMG

2. Evoked potential (EP):

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

3. Nerve Conductive Velocity (NCV):

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

1. Operation menu

  • Customizable selection of EMG with common nerve/ muscle colour map.
  • One key switch function for monitoring EMG, SCV, RNS and F-wave.
  • Easy access to waveform data comparison
  • Pull-down list structure for easy operation

2. Guide for Electrode Placement

  • Easy-to-understand illustration for electrode placement, stimulation position and standard waveform

3. Case Management module

  • Easily accessible through search by “Accurate Inquiry” or “Fuzzy Inquiry” for patient case record.
  • Ability to replay, review and print reports for past cases

4. Examination Protocol: EMG

  • Scanning EMG
    • Ability to replay and analyse stored, scanned waveforms measured multiple times
    • Automatic saving and extraction of data and result.
  • Motor Unit Potential (MUP)
    • Automatic scanning of EMG waveform and selection of optimum MUP value
    • Automatic analysis of time limit, square, phase, frequency, etc.
    • Extraction of MUP during collection, display, analysis and replay of EMG signal
  • Examination Protocol: EP
    • Monaural or binaural stimulation: change of stimulation polarity and alternative stimulation
    • Audio signal output: rare wave, dense wave, alternative wave
    • Monocular or binocular stimulation during interval
    • Improved examination efficiency through rapid extract algorithm, efficient data selection and overlay analysis
    • Waveform is marked automatically
    • Dynamic display of examination results in spectrum format
  • Examination Protocol: NCV
    • NCV examination procedure is simple. Nerve examination plan can be pre-established.
    • One key switch for nerve switch and lateral switch, and the item can be stored automatically after test.
    • Waveform caching function enables saving of multiple waveforms with the same examination point.
    • With waveform comparison function, saved waveforms can be shown on the same screen.
    • Four-channel synchronised signal acquisition is offered.
    • Dual-screen display is featured, one screen displaying F-Wave/H-wave separately, the other screen displaying overlay.
    • Latency value and graphic amplitude, rapid data observation with measurement lines are displayed.

NS-EMG-C-1-CLIP3 EMG 3-core clip electrode

NS-EMG-C-1-CLIP2 EMG 2-core clip electrode

NS-EMG-C-1-CUP2 EMG 2-core cup electrode

NS-EMG-C-1-RING Ring electrode

NS-GRD-CLIP Single touchproof grounding cable (Clip)

NS-GRD-DISC Single touch-proof grounding cable (Disc)

NS-STIM-CURR-BAR Saddle electrode (Bar-Type)

NS-STIM-CURR-FELT Saddle electrode (Felt-Type)

NS-STIM-AV-HP Audio stimulation headphones (AEP only)

NS-STIM-AV-GG Visual stimulation goggles (VEP only)

NS-STIM-N EMG needle electrode cable

NS-STIM-DB15 DB15 Extension Cable (EP only)

EMG/EP

System Key Features

  • Pre-amplifier operable with up to 4 EMG channels
  • High signal quality with USV data transmission, shielding the signal from power line interference
  • Consists of 3 standard EMG modules with 4 EP modules
  • Easy-to-understand illustations of electrode placements, stimulation positions and standard waveforms
  • Easy access to waveform data comparison
  • Ability to review and generate report for past cases
  • Display Sensitivity: 0.05μV/div ~ 20,000μV/div, ±10% error. No precision requirements below 50μV/div.
  • Frequency-Amplitude Characteristics: 0.2Hz ~10 kHz, error is +10% ~ -50% between 0.2Hz ~ ≤0.5Hz, and error is +5% ~ -30% between >0.5Hz ~10 kHz.
  • 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 ±300 mV DC polarization voltage, bias is ≤5%.
  • 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.

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 ~ 8000 Hz, error within ±10%;
  • Modulation Frequency: 20 ~ 200 Hz, 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.

EMG/NCV

System Key Features:

  • Pre-amplifier operable with up to 4 EMG channels
  • High signal quality with USB data transmission, shielding the signal from power line interference
  • Consists of 3 standard EMG modules and 8 NCV modules
  • Easy-to-understand illustrations of electrode placements, stimulation positions and standard waveforms
  • Easy access to waveform data comparison
  • Ability to review and generate report for past cases

Nerve Conduction Velocity (NCV)

  • Waveform caching function enables saving of multiple waveforms with the same examination point
  • Screen display of individual F-wave, H-wave and overlay
  • Display of latency and amplitude values with measurement lines for easy reference

System Parameters:

A. Amplifier Parameters

  • Display Sensitivity: 0.05μV/div ~ 20,000μV/div, ±10% error. No precision requirements below 50μV/div.
  • Frequency-Amplitude Characteristics: 0.2Hz ~10 kHz, error is +10% ~ -50% between 0.2Hz ~ ≤0.5Hz, and error is +5% ~ -30% between >0.5Hz ~10 kHz.
  • 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 ±300 mV DC polarization voltage, bias is ≤5%.

B. 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.

Got a query for Neuro Style Product or Services?