Troubleshooting
96
RNS
®
System Programming Manual
6. Remove the leads from the connector cover. Clean the proximal end of the lead with saline
and visually inspect that the lead end is free of excess blood or other tissue.
7. Reinsert the leads. Verify that they are fully inserted into the connector cover ports.
8. Place the connector cover back onto the RNS
®
Neurostimulator. Verify, once again, that the
leads are fully inserted in the connector cover ports.
9. Secure the connector cover onto the RNS
®
Neurostimulator using the torque driver.
10. View the live ECoGs to verify that the signal is sufficient and free of noise or artifacts. Isolated
artifacts may be the result of electrostatic discharge (ESD) / static electricity shocks to the
tablet.
11. If the signal contains noise or artifacts, disconnect the AC adapter from the tablet and run on
battery power. (Make sure the battery is charged before doing so.) Disconnect the network
cable as well if it is connected.
12. If the signal is not sufficient or still contains noise or artifacts, measure the impedances. If the
impedances are out of range, follow the instructions in the relevant section of the system
manual.
13. If impedance measurements are normal, but the problem remains, try using a different tablet,
if available.
14. If the problem persists, replace the neurostimulator. Refer to the relevant section of the
system manual.
Troubleshooting During a Routine Follow-up
1. Reposition the wand over the RNS
®
Neurostimulator and interrogate again.
2. If the signal is not sufficient, follow the
Poor or No Communication Between the RNS®
Neurostimulator and the RNS® Tablet
instructions in this section.
3. If the signal is not sufficient, measure the impedances. If the impedances are out of range,
follow the instructions in the relevant section of the system manual.
Poor or No Communication Between the RNS
®
Neurostimulator and the RNS
®
Tablet
1. Confirm that the wand cable is inserted securely into the USB port on the tablet.
2. Confirm that the concave side of the wand faces the neurostimulator and that the wand is
within approximately 1 inch of the neurostimulator.
3. Disconnect the AC adapter from the tablet and run on battery power. (Make sure the battery
is charged before doing so.) Disconnect the network cable as well if it is connected.
4. Move electronic equipment that may be a source of interference or move away from such
equipment if possible. (Turning electronic equipment on and off may help identify the source
of any interference.)
•
Reposition the wand over the neurostimulator and interrogate.
•
View the live ECoGs to verify that the signal is sufficient and void of noise or artifacts.
5. Restart (turn OFF and back ON) the tablet. Attempt the interrogation again.
6. Try a different tablet, if available.
Summary of Contents for PDMS 4340
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