Evoke
®
SCS System Clinical Manual
CLIN-UMAN-005175
Revision: 9.00
Page 77 of 101
place (see Figure 11.5).
2. Check the battery voltage with the CPA (see Section 6.3).
3. To charge the eCLS battery:
a. Disconnect the intraoperative cables or lead adapters from the eCLS.
b. Remove the battery from the eCLS.
c. Charge the battery using the supplied eCLS battery charger.
4. Place the charged battery into the eCLS
5. Connect intraoperative cables or lead adapters to the eCLS.
11.5
Secure the eCLS for the trial stimulation period
1. The eCLS may be worn by the patient for the duration of the trial stimulation period in
either of two ways:
a. In a pouch (see the Accessory Belt section in the Evoke SCS System User Manual),
or
b. Placed on a dressing and taped to the skin by the clinician.
2. The eCLS and leads remain connected inside the eCLS case during the trial stimulation
period. If the leads become disconnected from the eCLS or the patient needs to
disconnect the eCLS for any reason the patient should return to the clinic.
12
Behaviour of the stimulator when alerts occur
Refer to Section 8.7 for alert and error display on the CPA.
12.1
Out of compliance
Out of compliance (OOC) occurs when the voltage requirement exceeds the maximum
stimulation voltage (see Section 8.6). When OOC is indicated, the patient may not increase
intensity with the EPC, stimulation may stop, or the patient may feel a reduction in paresthesia
intensity.
If OOC occurs with disconnected stimulation or return electrodes, or recording electrodes with
ClearCAP enabled, then stimulation stops. If the electrodes are reconnected (e.g. their
impedance reduces), stimulation may be restarted by the patient using the EPC and will ramp
from 0 mA to the stimulation current set when the stimulator stopped. If the electrodes remain
disconnected the stimulator will follow the behavior described below in Section 12.3.
If OOC occurs when closed-loop is enabled with electrodes connected, and the stimulator does
not detect a problem with the ECAP measurement, then the stimulator will reduce the target
value by half. If the stimulator detects a potential problem with the ECAP measurement, then
stimulation stops. When stimulation is restarted by the patient, it will start at 0 mA of
stimulation current, with closed-loop disabled, and the patient will need to increase the
