Dynatronics Dynatron 550 Plus, Service Manual

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Dynatron
®
850plus & 550plus
General Information - IFC & PREMOD
71
Target
The Dynatron 850plus and 550plus feature Dynatronics’ patented TARGET feature (available
for interferential treatments only) simplifies electrode placement for an interferential treatment.
Interferential treatment is performed using four electrodes with two channels. The channels
produce two currents which intersect producing the interferential “beat.” Without Target, it is
often difficult to place the electrodes in the right position to produce the beat at the desired
treatment area. This is because different types of human tissue (skin, muscle, bone, etc.)
conduct current differently, making it impossible to guess the course of the two currents.
Target helps eliminate the need to move the electrodes to get the desired result.
With Dynatronics’
patented Target feature,
you can move the center
of interference (where
the two currents cross)
simply by moving your
finger across the Target
touch pad. Patient
feedback will let you
know when you have
positioned the treatment
at the desired spot.
In the diagram here the
electrodes are placed in a position to treat a point directly in the center of the electrodes. But
the center of interference actually occurs at another point. (In these illustrations the point of
interference is shown in a cloverleaf shape as interferential treatment affects a cloverleaf-
shaped area.) Using the Target pad, the point of interference in easily moved to the desired
treatment area.
Why Is Target Better?
The Dynatron 850plus and 550plus employ a unique, patented
method which actually moves the center of interference. With
Target, the voltage output from both channels remains equal at all
times; so wherever the treatment is applied, a full, deep interferential
beat occurs. Other devices attempt to achieve this effect by
increasing the current from one channel while decreasing the current
from the other channel. This method only rotates the cloverleaf-
shaped area, but the center of interference does not move. In
addition, the depth of the beat is reduced.
Channel
2
Channel
2
Channel
2
Channel
2
Channel
1
Channel
1
Channel
1
Channel
1
Normal Interferential currents cross at a point between electrodes. It is
difficult to guess where they will cross as shown in the left diagram. With
Target, you move the point of interference without moving electrodes (as
shown in the diagram on the right)—just press the touch pad.
A
Channel
2
Channel
1
Channel
1
Channel
2
Other devices increase current at one
channel while decreasing it at the other.
This merely rotates the treatment. The
center of interference does not move.