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peeling, tissue recovery, its tightening, improvement of flexibility and it also stimulates
immunity and resistance of tissues.
8.1 The nature of discharge generating
The spark discharge itself is generated by a high voltage of 4
–
6 kV at a very low current < 1
mA. Between it and the tip of the device place 2 mm above the skin, the discharge is
generated. The electric circuit is closed by a disposable grounding electrode placed on the
right shoulder blade of the patient.
9. Effect on cells
Every cell has a membrane potential on its membrane (the difference of electric potential
between the two sides of the membrane). Inner side of the membrane has a negative charge,
the inner side has a positive charge. As the skin is ageing, the electric charge is distributed
unevenly along the membrane, and the electric voltage of the membrane is changed.
The Membrane potential is created and influenced by potassium and sodium cations. It is
difficult for sodium cations to pass through the cell membrane, whereas potassium cations can
pass through it very easily.
When DC electric current flows through cells, the membrane potential is change, the
membrane is depolarized and this means that it can make various ions (Na+, K+) to change
the position and pass the membrane as well. The correct distribution of cations on the inner
and outer side of the membranes makes the membrane potential balanced. Electric voltage of
skin membrane is increased and the membrane tightens. If this process appears in the
majority of cells in one area, the skin tightening is observable by naked eye.
Other electrocauters using AC current are not able to depolarize the membrane,
because the effects of AC current either irritate cells or its effect of cells is trophic or analgetic