Users Manual Part 1

14
Nerve Integrity Monitor
Note: If a wireless connection is not available, plug in the patient interface cable between the NIM Vital console and the patient
interface. The console connector is located on the back, left side and is marked by a patient interface symbol (refer to the
“Buttons and indicators” and “Symbols” topics for more information).
4. Press on the bottom right of the screen.
The Check Electrode screen appears and shows the status of the electrode check. Refer to the “Check Electrode screen” topic for
additional information.
5. Place the electrodes according to the diagram. Refer to the “Electrode placement” topic for additional information.
6. Press on the bottom right of the screen, or the MONITORING tab, to progress to the MONITORING screen.
Note: If you progress to the MONITORING screen without passing the electrode check, the warning message, “Impedance check
has failed: Continue?” appears. The user must select [CONFIRM] or [CANCEL] before proceeding to the MONITORING screen.
The Monitoring screen appears.
Connect Devices screen
The following information is located on the Connect Devices screen.
The
symbol appears in the top right-hand corner of the screen when the patient interface box is cradled.
Wireless connection
Undocking the patient interface box initiates an automatic wireless connection to the console. The Status: Connected message
appears with a green border around the Connect device box and the paired light will illuminate on the patient interface box.
The symbol appears in the top right-hand corner of the screen when the patient interface box is connected wirelessly.
Note: Only undock the patient interface box you plan to use. Once undocked, the system automatically connects to the patient
interface box that is undocked rst. If you need to switch connection to the other patient interface box, replace the rst patient
interface box into its dock and undock the other patient interface box.
Wired connection
If a wireless connection is not available, plug in the patient interface box cable between the NIM Vital console and the patient
interface box. The console connector is located on the back-left side and is marked by a patient interface box symbol (refer to the
“Buttons and indicators” and “Symbols” topics for more information).
The symbol appears in the top right-hand corner of the screen when the patient interface box is connected with a cable.
Check Electrode screen
The Check Electrode screen assists you with electrode placement.
The surgeon should insert the electrodes into the appropriate target muscle location innervated by the monitored nerve. The
surgeon should then insert the ground electrode (green) and the stim return (white) as shown in the electrode placement diagram.
Once the surgeon places the electrodes on the patient, the surgeon needs to insert the other end of the electrodes into the patient
interface box to complete the electrode setup. NIM Vital systems include nerve and electrode placement guides that are color-coded
to help reduce confusion.
The electrode placement guide contains some, but not all, possible electrode placements. Press on the SETUP screen for an
additional list of electrode placement guides ( Refer to the help section for electrode placement diagrams).
When the system runs an electrode check, this screen shows the electrodes the system is testing.
• Green bar with white check marks indicate the electrode is connected to the corresponding channel.
• Red bar with white Xs indicate the connection is incomplete.
• A spinning icon indicates the system is calculating.
If you connected all the electrodes properly, all channels will have green check marks indicating the electrode check has passed.
Press
to proceed to monitoring.
STIM 1, STIM 2, Ground - If a spinning icon appears after the system has completed the test, no channel electrode or ground was
connected, so the system reads that as a no value (impedance). You must connect at least one channel electrode and ground for the
system to read STIM 1, STIM 2, and ground impedance.
If the user needs detailed values, press to show the more detailed impedance menu. If showing details, use the drop-down
menus on the Electrode Type panel (the only screen where you can adjust the electrode type in use) to select the type of electrode
you want to use. Refer to the “Troubleshooting” topic for information on electrode troubleshooting.
FCC use only, not for Medical use