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Chapter 4 Operation
4.1 Power on
Press the power button and hold for 2 seconds to enter into the interface as below:
4.2 Mode Selection
4.2.1 ETS
EMG Triggered Stimulation (ETS) is a therapeutic fusion between sEMG Bio-
feedback and NMES. The stimulator delivers electrical stimulation according
to the EMG signal of the body part. During ETS, the patient is required to co-
ntract the muscle as much as possible against a target threshold. Once the
target is achieved, the stimulation is triggered to against a target threshold.
Once the target is achieved, the stimulation is triggered to supplement the
naturally achieved muscle contraction beyond the contracting muscle's actual
ability. There are 2 ways to achieve a threshold of stimulation: 1. The user
manually downloads the threshold from the iPad APP or; 2. The stimulator dete-
cts the EMG signal and sets a threshold based on the signal: the screen will
display “Relax” and then “Flex”, after which the threshold will be set.
The default mode is ETS once the stimulator is powered on. The user can down-
load a threshold from the iPad APP or the stimulator will work on the default thres-
hold, the threshold is displayed in the middle of the yellow area. When down-
loading 0 from the iPad APP, AUTO will be displayed in the middle of yellow area.
4.3.4 Time Locking
The treatment time can be downloaded from the APP and the stimulator will
operate within the specified time, once the prescribed time is up, the stimulator
will shut down and cannot work again until downloading another treatment time
from the APP.
4.3.5 Current Limit
A current limit value can be downloaded from the APP to limit the maximum output
current. The available working current of the stimulator is 0 to 60 mA, however, if
the user downloads a current limit value of 25 mA from the APP, then the maximum
output current will stop at 25mA.
When using stimulation modes NMES or ETS. As a safety feature the user must
first press the “ -“ button twice beforepressing the “ +” key to increase intensity.
This is to ensure that an unwanted increase in “mA” intensity does not occur. The
stimulator is designed to automatically lock after 10 seconds. To unlock and increase
intensity the user must first press the “-“button twice and then proceed to pressing
the “+” button to increase intensity to the desired setting.
4.1.1 Safety Feature
4.3.2 Loose electrode warning
When the electrodes are not properly contacted with the skin, the output will
stop and the screen will display a electrodes loose warning. Please check the
electrodes and reattach them, making full contact with the skin, then press
to start again. The followings are the conditions that will cause a electrodes
loose warning:
1. In ETS or GAME mode, if any of the three electrodes are loose
2. In NMES mode, if any of the yellow electrodes are loose
4.3.3 Data Storage
The data which can be stored in the system includes: current limit value, previ-
ously used prescription, previously downloaded threshold, the rest time for treat-
ment; and parameters for each prescription in NMES mode: frequency, pulse
width, ramp up, ramp down, duration, interval, etc.