Evoke
®
SCS System Clinical Manual
CLIN-UMAN-005175
Revision: 9.00
Page 79 of 101
Low and stimulation will continue. If the ECAP signal is outside these limits, or clipping, the
stimulator checks the connection of each recording electrode. Stimulation may stop, the
patient may feel a reduction in paresthesia intensity, or closed-loop will be disabled until the
clipping alert is cleared.
If closed-loop is enabled and clipping occurs with disconnected recording electrodes, then
stimulation stops. If the recording electrodes are reconnected, stimulation may be restarted by
the patient using the EPC and will ramp to the target level set when the stimulator stopped. If
the recording electrode remains disconnected the stimulator will follow the behavior described
in Section 12.3.
If closed-loop is enabled and clipping occurs with the recording electrodes connected, the
stimulator will set the ECAP amplifier gain to Low and stimulation will continue. If clipping
continues and the gain is already Low, the stimulator will reduce the target value by half and
stop stimulation. When stimulation is restarted, it will start at 0 mA of stimulation current, with
closed-loop disabled, and the patient will need to increase the stimulation intensity using the
EPC. Closed-loop is automatically re-enabled, without interrupting stimulation, once the ECAP
signal is detected. The system determines an ECAP has been detected when the ECAP
amplitude reaches half the original target value.
If closed-loop is disabled and clipping occurs with disconnected recording electrodes while
ClearCAP is enabled, then stimulation stops. If the recording electrodes are reconnected,
stimulation may be restarted by the patient using the EPC and will ramp to the stimulation
current level set when the stimulator stopped. If the recording electrode remains disconnected
the stimulator will follow the behavior described in Section 12.3.
If closed-loop is disabled and clipping occurs with disconnected recording electrodes while
ClearCAP is disabled, then stimulation continues.
If closed-loop is disabled and clipping occurs with the recording electrodes connected, the
stimulator will set the ECAP amplifier gain to Low and stimulation continues.
13
Evoke Patient Controller
Refer to the Evoke SCS System User Manual for full details on use of the Evoke Patient
Controller (EPC).
13.1
Pair EPC to stimulator
To enable the EPC to be used with an eCLS or CLS it must first be paired with that stimulator.
1. Ensure that there are no other stimulators nearby when you attempt to pair, as
pairing will not occur if the EPC detects more than one stimulator.
2. With the EPC off, press and hold
and then press and hold
at
the same time for more than 1 second to enter pairing mode.
•
While searching for the stimulator, the EPC will beep every 0.5 seconds for up to 10
seconds.
