Document Reference: ENG-UMAN-000731
Revision: 5.00
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17
Glossary and Symbols
17.1
Glossary
Table 17.1: Glossary
Term
Definition
Charger
The device that charges the battery in the CLS/eCLS
Chronaxie
The minimum current required to elicit neural activation in the spinal
cord at infinite pulse width.
Clinical Interface (CI)
The computer loaded with the CPA software used to program the
CLS/eCLS
Closed-Loop Stimulator
(CLS)
An implantable pulse generator capable of Feedback Control (aka closed-
loop mode)
Clinical System
Transceiver (CST)
Exchanges information between the CI and the CLS/eCLS
Clinical Programming
Application (CPA)
A computer program user interface that provides the functionalities
required to program and analyze the performance of the CLS/eCLS
Conduction Velocity
The velocity at which elicited neural responses travel up or down the
spinal cord.
Electrode
An electrical contact that may be employed to deliver therapeutic
current, measure neural responses or control closed-loop stimulation.
Evoke Pocket Console
(EPC)
A remote controller that allows the patient to adjust the therapy output
from the CLS/eCLS
Evoked Compound Action
Potential (ECAP)
The sum of electrical signals elicited by a stimulus from multiple nerve
fibers.
External Closed-Loop
Simulator (eCLS)
The eCLS is a non-implantable device with the same functionalities as the
CLS
Feedback Control (FC)
The automatic adjustment of stimulation output in response to a
measured ECAP
Interphase Gap (IPG)
The delay between phases of a stimulation pulse
Lead
Insulated cable with a number of exposed electrodes at the distal end
used in neurostimulation therapy
Lead Adapter and Lead
Adapter Cable
Sterilized cable which enables the connection between leads/lead
extensions and the eCLS
Lead Adapter Extension
An extension cable which allows for a longer length of cable between
eCLS and lead/lead extensions
Lead Extension
Insulated cable which connects to the proximal end of a lead and in turn
connects to either a CLS or eCLS
Maximum Charge Factor
Used during the automated Chronaxie and Rheobase test to determine
the maximum stimulation current for each pulse width. The factor is the
ratio between the patient reported maximum current at the initial test
pulse width and the equivalent current at infinite pulse width.
Program
The complete set of parameters describing stimulation, recording,
measurement and feedback.
Rheobase
The minimum current required to elicit neural activation in the spinal
cord at infinite pulse width.
Spinal Cord Stimulation
(SCS)
A treatment for chronic pain utilizing pulsed electrical signals delivered
to the spinal cord
Stimulation Set
A set of stimulation parameters designed to target a particular area of
the Clinical Subject’s pain.
