Semg Operation - Chattanooga VitalStim Plus User Manual

DEVICE USER INTERFACE

sEMG OPERATION

The VitalStim® Plus Electrotherapy System sEMG modality
reads and records the sEMG biofeedback activity of a
muscle or muscle group by sensing the electrical impulses
generated during a voluntary muscle contraction and
relax cycle . These signals are accurately relayed to the
VitalStim® Plus Electrotherapy System through VitalStim
Electrodes . sEMG can be beneficial to muscle retraining
therapy by setting target values and charting the
patient progress in reaching those goals in a specific
muscle or muscle group . Within this section, general set
up procedures of the various parameters of sEMG are
explained . The following options are available: sEMG
(Channel 1), sEMG (Channel 2), sEMG (Channels 1 & 2),
NOTE: Do not place the VitalStim Plus device in close
proximity with a wireless device such as a cell phone
or wireless keyboard . Emissions from such devices may
interfere with the VitalStim Plus device .
NOTE: Complete the following steps to begin sEMG
treatment:
1 . Prepare Patient and therapy system – Refer to the
PATIENT PREPARATION section for electrode selection,
preparing the patient, and securing electrodes on
page 17 .
NOTE: Always connect a single reference electrode to
the white reference lead wire in addition to the active
recording electrodes . Always use at least channel 1
when using sEMG or sEMG+VMS ( channel 2 cannot
be used alone) .
2 . Select sEMG icon from the Home screen .
3 . Press the prescribed channel icon to activate or
deactivate it (see above for the available choices) . The
treatment screen will appear (image below illustrates
the sEMG Channel 1 &2 selection) .
Set-up Steps:
• To view information explaining the modality, select
the Modality Description icon . Press Up and Down
arrows to scroll the text . Press the Back button to
return to the previous screen or the Home button to
return to the Home screen .
• To view the most commonly used electrode
placement for the selected modality select the
Electrode Placement Icon . Press the Text icon see
additional description . Press the Back button to return
to the previous screen or the Home button to return
to the Home screen .
• To view the Trace view, touch the Trace view Icon .
Trace View displays a real time view of the current
sEMG value as well as previous values . A horizontal
Touch to toggle between Target
for Channel 1 or 2 ( T1 or T2)
trace graph will be displayed . Left Axis (Y): Value in
μ Volts, bottom Axis (X): Time in seconds . The target
value will be displayed as a dashed line on the graph .
The numeric sEMG value will be displayed below
the graph . Press the Back button to return to the
previous screen or the Home button to return to the
Home screen .
24
VitalStim® Plus Electrotherapy System
Touch the graph area to pop up
threshold adjustment arrows