Users Manual Part 1

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Nerve Integrity Monitor
3. Touch and hold the stimulating probe to channel1 of the Patient Simulator and observe the following:
• Stimulus waveform on channel1 (Refer to the Example Stimulus and Spike Waveforms).
• Stimulus tone sounds (steady repeating beep).
• Raw EMG can be heard (a popping sound accompanying the stimulus tone).
• mA Measured is ± 5% of the mA setting.
• The system displays the μV reading to the right and above the zero (0) amplitude line in yellow and boxed.
4. Repeat test for all channels.
5. Set mA button to 1.00mA and Event Threshold to 100μV (default settings for a Thyroid procedure. Other default settings may
vary depending on the procedure chosen).
6. Stimulate channel 1 and observe that the stimulus tone sounds (repeating beep) and raw EMG can be heard (a popping sound
accompanying the stimulus tone).
7. Increase the Event Threshold to 500μV and stimulate channel 1and observe the following:
• Stimulus waveform on channel1.
• Stimulus tone is NOT heard.
• Raw EMG can be heard (a popping sound).
• mA Measured is ± 5% of the mA setting.
• The system displays the μV reading to the right and above the zero(0) amplitude line, the highest in a yellow box.
8. Repeat for remaining channels.
9. Move the Stimulator and STIM1 Return to STIM2 and repeat steps 2, 3, and 7 using any channel.
10. If a Remote (Incrementing Probe) is available, check the stimulus adjustment as shown in the 2, 3 and 4 illustration. (If all 8
channels have been tested it is acceptable to test the remote probe on any one channel).
• 1 - Toggle button normal or at rest.
• 2 - Increase current.
• 3 - Decrease current.
• 4 - The user can perform the following functions with the toggle button:
— Momentary press saves the current screen to memory (for reports) and to a selected peripheral device (printer and/or USB
ash drive) if the user selected that option in the settings area.
— Press and hold opens a menu on the user interface with more options.
Note: If any of these conditions are dierent, check your setup. If still incorrect, contact Customer service.
Threshold test
1. Decrease Event Threshold to 20μV.
2. Grasp one lead of the channel 1 electrode wire to induce artifact noise over 20 μV threshold causing continuous event tones to
sound. If the artifact is not over the 20 μV level, event tones and auto threshold will not be able to be tested.
3. Select Auto Threshold located at Settings/Display/Auto Threshold.
4. Press the channel 1 electrode wire with your nger and observe the following:
• Continuous event alarms sounding for ten seconds.
• After ten seconds, the system announces the Threshold Increase.
• The new threshold value appears next to the channel number.
Note: Auto Thresholds maximum is 400μV. Holding a channel electrode wire between your thumb and forenger, or pressing the
wire too hard can generate signals greater than the maximum. In this case the threshold increases to 400μV, but alarms continue to
sound.
5. Repeat for the remaining channels.
Note: If any of these conditions are dierent, check your setup. If still incorrect, contact Customer service.
Cleaning
Refer to the “Cleaning and Maintenance” topic.
Storage
Allow the unit and accessories to thoroughly air-dry before storing in a cool dry place. Refer to the “Technical Specications” topic for
further information.
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FCC use only, not for Medical use