Dynatronics Dynatron 550 Plus, Service Manual

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Dynatron
®
850plus & 550plus
Ultrasound Technical Information
95
Microcurrent Usage Cautions
Microcurrent uses only very low frequencies and the current generally is not felt by the
patient. However, microcurrent at high intensity settings, especially when using probes, can
sometimes be felt by the patient, and may even be uncomfortable for the patient. This is a
result of current being concentrated at a very small area.
As with all forms of electrotherapy, current density is dependent upon the current setting, the
intensity setting, the size and type of electrodes used, and conductance. Higher current
density increases the possibility for patient discomfort. The current density can be reduced
by decreasing the amount of current (intensity) or increasing the area through which the
current is being delivered. The area can be increased by using larger electrodes and/or
making sure that the total area of the electrode is actually delivering current.
Read more about current density in “Electrotherapy Usage Cautions” earlier in this section.
When delivering microcurrent therapy, observe the following guidelines:
1. Use only moderate current. Consult published literature for recommended settings for
microcurrent treatment.
2. When using microcurrent probes, keep in mind that all of the current is delivered through
the tip of the probe resulting in much higher current density than when using electrodes.
Therefore, low to moderate intensity settings will be much more comfortable for the
patient, especially when treating sensitive areas.
3. When using electrodes, ensure that the area on the patient’s skin where the electrode is to
be placed is clean and free of all foreign matter. This includes powders, perfumes, and
the like, as well as body oils or dirt and grime. Cleaning with an alcohol wipe should be
adequate. Allow the alcohol to fully evaporate before applying the electrodes.
Iontophoresis occurs with all electronic therapies, and can drive any above-surface
contaminants below the epidural layer, where an allergic reaction may occur.
4. Make sure the electrodes being used are in good condition. The polyadhesive electrodes
should have good adhesion over the entire surface area of the electrode. The area where
the leads attach to the electrode (either the pin connector or a snap) should not be
damaged such that the connection to the backing behind the adhesive is broken. Carbon
electrodes should be deep black, and should be free of cracks in the electrode surface.
5. Some patients tend to be much more sensitive to microcurrent treatments. On patients
with this tendency, treat with reduced intensity and/or shorter treatment times, with
possibly more frequent treatments, if required.
6. If electrodes are placed on an uneven skin surface, such as over a raised mole, the
electrode may not adhere evenly over its entire surface and current could be intensified at
the raised area, causing discomfort to the patient.