Document Reference: ENG-UMAN-000730
Revision: 6.00
Page 28 of 40
Paresthesia mapping
Refer to the Evoke™ Clinical Manual for detailed programming instructions.
1.
Connect the CI to the eCLS.
2.
Check electrode impedance using the CI to ensure the leads are connected properly.
o
If electrode impedance is greater than 4000Ω check all the connections.
o
Check impedance after each reconnection of the proximal connector to the
adapter.
3.
Select the stimulation and measurement electrodes and settings.
4.
Increase stimulation current until the patient reports a medium level of paresthesia
(tingling).
o
Adjust settings to ensure that ECAPs are being measured correctly.
5.
The patient should report paresthesia coverage of the body that aligns with their
pain area.
o
If paresthesia coverage is not satisfactory, change the electrode and stimulation
settings using the CI or move the percutaneous lead to a new position.
o
If moving the percutaneous lead with stimulation on, activate FC to automatically
adjust current.
o
Retest paresthesia coverage after changing settings or moving the percutaneous
lead.
6.
When satisfied with the lead placement, disconnect the lead adapter from the lead
adapter cable (see section 10.5) and disconnect the lead from the lead adapter (per
section 10.6).
Note:
If the lead will be externalized for an extended trial period, go to section 8 ‘Trial with a
Temporary Percutaneous Lead’, otherwise return to Section 5.2.5 for permanent implant of
percutaneous leads.
Disconnecting the lead adapter from the lead adapter cable
If a lead needs to be moved the lead adapter may remain connected to the lead, but should
first be removed from the lead adapter cable.
1.
Grip the plug end of the lead adapter and pull away from the lead adapter cable.
2.
For lead steering, hold the lead adapter and turn the stylet handle between thumb
and index finger.
When the lead is in the desired location, reconnect the lead adapter to the lead adapter
cable for test stimulation (see Figure 10.5).
