86
Electrodes
23.2 Information about the use of
various electrode types
23
General note
Select and apply electrodes with care. In constant current operation, a good,
even skin contact must be ensured. A reduction in the contact area may result
in paraesthesia in patients.
Before starting the treatment, the skin must be inspected and cleaned if
necessary, e.g., if the patient is sweaty or has applied any cream. Inflamed
skin, small wounds or scratches are covered with Vaseline or zinc cream.
Particular caution is also advised for recent scarring.
Disposable
electrodes
Self-adhering disposable electrodes allow comfortable and quick application.
They are also hygienic due to their single use. Three therapeutically sensible
sizes allow individual therapy appropriate for the symptoms.
Disposable electrodes are particularly well suited to therapy with bipolar
currents; for therapy with monopolar pulsed currents or currents with a galvanic
component the disposable electrodes should also be cushioned with a moist
sponge.
Note:
The disposable electrode is intended for single use only and can be disposed of
in household waste.
Re-use of disposable electrodes may result in a hazard for the patient.
Rubber electrodes
Rubber electrodes are suitable for therapy with bipolar currents; when used for
purely galvanic current, currents with galvanic components or long pulse
durations it must be noted that the normal removal of carbon resulting from use
causes a reduction in the conductivity.
Tin plate electrodes For therapy with purely galvanic current (galvanisation, iontophoresis) large tin
plate electrodes are suitable.
Sponge holders and
sponges
Both rubber and zinc plate electrodes must always have a moist intermediate
layer placed underneath. It is recommended to use sponge holders for rubber
electrodes and sponges, which should be at least 1 to 2 cm thick, for zinc plate
electrodes. Tap water is recommended to moisten the sponges; distilled water
is not suitable as it is a poor conductor.
Unlike the comfortable self-adhesive disposable electrodes, rubber and zinc
plate electrodes must be fixed in place. Velcro or perforated rubber bands are
suitable.
