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Multiple implants - The long-term safety associated with implanting more than one lead
on the same side of the brain is unknown.
Neurostimulator location - Select a location that is:
▪
a minimum of 20 cm (8 in) away from another neurostimulator to minimize telemetry
interference and possible inappropriate therapy.
▪
on the opposite side of the body from another active implanted device (eg,
pacemaker, defibrillator) to minimize possible interaction between the devices.
▪
away from bony structures (eg, 3 – 4 cm [1.2 – 1.6 in]) to minimize discomfort at the
neurostimulator site.
▪
away from areas of restriction or pressure to minimize the potential for skin erosion
and patient discomfort.
▪
in an area accessible to the patient for proper operation of a patient control device
and for proper neurostimulator recharging (rechargeable neurostimulator only).
Device specific considerations
Soletra Model 7426 and Kinetra Model 7428 neurostimulators
Replacement procedure - Do not replace two Soletra Model 7426 Neurostimulators with
one bilateral neurostimulator unless retunneling is performed so both lead-extensions are
on the same side of the body. Otherwise, the "looped" configuration formed by the lead-
extensions increases the potential for electromagnetic interference (EMI) effects.
EMI procedures for neurostimulators with magnet switch–See "Appendix A:
Electromagnetic interference (EMI) and mechanical interference" on page 20 for device-
specific guidelines.
Activa RC Model 37612 Neurostimulator
10 English Information for prescribers 2017-05-01
Proper
Improper
Figure 1. Routing for multiple lead-extensions.