Boston Scientific Avista MRI Mode D'emploi page 13

20. Push the lead or extension proximal ends through the straw, then withdraw the straw (Figure 12).
21. For Permanent Trials: proceed to "Connecting the Lead Extension".
22. For Permanent IPG Implantation, refer to instructions for "Connecting the lead to the IPG" in the IPG
Directions for Use for your SCS System.
Note: The following Codman Disposable Catheter Passers may be used in place of the Boston Scientific tunneling
tool: REF 82-1515 (36 cm); REF 82-1516 (55 cm); and REF 82-1517 (65 cm). When using a Codman Disposable
Catheter Passer, tunnel from the IPG pocket to the midline incision using the standard technique.
Connecting the Lead Extension for Permanent Trials
WARNING: Physicians should not prescribe MRI for patients undergoing trial stimulation or who have any SCS
system components that are not fully implanted. Explant all trial stimulation components if an MRI scan is required.
MRI has not been tested on trial stimulation components and may cause heating of the lead electrodes, resulting in
tissue damage or serious patient injury.
23. Wipe clean the proximal end of the lead, then insert the proximal end into the lead extension connector
until it stops and the retention ring (long ring) is under the setscrew.
Note: If there appears to be an obstruction when inserting the lead into the lead extension connector, use the hex
wrench to loosen (counterclockwise) the setscrew and/or gently rotate the lead to help advance the proximal end.
24. Ensure that the lead is fully inserted before tightening the set screw to prevent lead damage.
25. Using the hex wrench supplied, turn the extension connector setscrew clockwise until it clicks,
indicating lock (Figure 13).
Note: Ensure that the hex wrench is fully seated in the setscrew before tightening. The hex wrench is torque-limited
and cannot be overtightened.
Figure 12: Withdrawal of the Tunneling Straw
Figure 13: Tightening of the setscrew in the Extension Connector
Instructions for Use
Avista™ MRI xxcm Contact Lead Kit
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