Dynatron® 850plus & 550plus
Treatment Instructions - RUSSIAN & BIPHASIC
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Biphasic / Russian Instructions
WARNING
• NEVER turn the power on or off while the unit is connected to the patient.
• Always give the Remote Stop device to the patient prior to the treatment.
• Always STOP a treatment before removing or attaching electrodes or leads. Leads and
electrodes must only be applied to the patient before a treatment is started.
• Never use worn or damaged leads or electrodes as these may result in injury to the
patient.
• See “Contraindications, Warnings, and Precautions” in this manual before administering a
treatment to a patient.
In the Russian and Biphasic Stimulation modes the output of the device is a pulsed sinusoidal
wave. The Dynatron 850plus and 550plus allow the operator to choose a muscle
contraction/relaxation cycle that is most suited for the individual patient and for the desired
treatment. When the cycle required is chosen, each muscle-stimulating burst is followed by a
relaxation (rest) cycle. See “Russian/Biphasic Parameters” in this manual for further
discussion of pulse rate and width, and illustrations showing the segments of the Russian
Stimulation cycle and the Biphasic Stimulation cycle.
The Dynatron 850plus and 550plus provide three modes of treatment in Russian and Biphasic
Stimulation: Normal, Reciprocal and Co-Contraction. You will need to decide which mode
is to be used and attach the appropriate number of leads needed when setting up the
treatment. You may set up two Biphasic or two Russian treatments with Normal mode. You
may not set up one Russian and one Biphasic at the same time as both channels share
frequency settings during these treatments.
NORMAL: Use one channel with one lead wire (two electrodes), place the electrodes so as
to treat through the muscle. The contraction/relaxation cycle is selected from an option list of
10/10, 10/30, 10/50, and Continuous (there is no rest cycle with Continuous). Each time
period is indicated in seconds. For example, 10/30 indicates 10 seconds of stimulation with
30 seconds of relaxation. The continuous duty cycle is not recommended for electrical
muscle stimulation, but may be used for settings that are intended to effect results other than a
muscle contraction.
CO-CONTRACTION: Use two channels and two lead wires (four-electrodes) for this
treatment. Each pair of electrodes is placed over a different muscle group. This treatment
fires the two muscle groups simultaneously—contraction and rest cycles for both treatment
areas occur at the same time
. Two channels are required (1 and 2).
RECIPROCAL: Use two channels and two lead wires (four electrodes) for this treatment.
The reciprocal muscle stimulation fires two muscle groups (such as reciprocal
flexors/extensors) one after the other. For example, with a duty cycle of 10/30, the device
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