Interferential Current - Globus GENESY 1500 User Manual

selective contraction of denervated fibers and the impulse average value
(alternated polarity) – corresponding to zero – avoids all phenomenon of ionization
of the dermis. The rectangular impulses are mainly used on totally denervated
muscles. The program varies according to the amplitude of the impulse and the
duration of the rest.
Triangular currents
The triangular current reaches the maximum of the set up intensity through a linear
ramp-up. If combined with sufficiently long impulses, the current determines a valid
contractile response of denervated fibers (controlled by damaged nerves), without
stimulating the adjacent, innervated – healthy – fibers. Logically, since the triangular
impulse are excitomotor and contract denervated muscles, it will be followed by a
break where there is no contraction. The polarity of the impulses is alternated in
order to avoid the phenomenon of dermis ionization. Because of the adaptation of
the nervous fibers to the slow increase of the stimulus intensity and the absence of
troubles to the patient, the triangular current is used to stimulate denervated
muscles totally and partially. The selective stimulation of fibers occurs without
involving the innervated fibers, which may affect alternated rectangular currents
because of the impulse rapid rise. The program varies according to the amplitude
of the impulse and the duration of the rest.
Trapezoidal current
Trapezoidal impulses are mainly used on partially denervated muscles. The program
varies according to the amplitude of the impulse and the duration of the rest.

Interferential current


The interferential current is a sine current alternated to medium frequencies (2500
Hz, 4000 Hz, or 10000 Hz), modulated in amplitude, characterized by a high
capacity to penetrate tissues and by an optimal tolerability, even in particularly
sensitive patients. The analgesic action of bipolar interferential currents, with
frequency of modulation included between 0 and 200 Hz, is led back to mechanism
of the gate control, to the stimulation of the inhibitory mechanism, to the peripheral
block of the transmission of the pain, to the removal of the substances that cause
pain of the affected region, as it happens for TENS current. By varying the frequency
of employed modulation, also an excitomotor effect can be exploited, that
contributes to the return of the venous flow activating the "muscle pump". They are
called interferential currents because they originate and interfere with the tissues in
points in which two medium frequency currents meet.
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Rev.05.15