10.
GENERAL INFORMATION
Statement: This unit is FDA
approved, and according to the FDA
regulations, it is classified a Medical
Device class IIa.
PRECAUTIONS
1. Do not immerse the unit in water
2. Do not place the unit close to
excessive heat
3. Use only the specified batteries: 2x
1.5volt AA Alkaline. Using of any other
battery could damage the unit.
4. Do not use the unit while asleep.
5. Remove the batteries from the unit, when it
is not used for a long time.
6. Keep the unit away from sources of high
magnetic fields such as TV’S, microwave
ovens and hi-fi speakers, as these may affect
the LCD screen.
7. Temperature & Relative Humidity of storage
and transport: -20°C to +80°C, 8% to 80%
R.H.
The wave shape
To obtain a stimulated muscular
contraction, we are obliged to
produce a depolarization of one or
more motor units.
The better way is to apply a current
flow on a motor point, that is to say
the point where the nervous fiber
innervates the muscle fiber.
As the human tissues very similar to a
capacitor, from the electric point of
view, the better effectiveness for the
electro stimulation is obtained by
using a pulse wave, having a very
steep rising front. The pulse width
should match the chronaxy value of
the muscle to be stimulated.
A mono-phasic pulse could be used,
but it has been demonstrated that a
biphasic pulse is more comfortable,
without reduction of the effectiveness.
The biphasic pulse has no galvanic
effect, so that it is also suitable to be
used over areas including metallic
prosthesis.
USTIM - User’s manual Rev. 2(10/19/2012)
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