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Radio-frequency treatment of skin tissue with shock-free handpiece
专利权人:
Jonathan Achenbach;Simon Furnish
发明人:
Simon Furnish,Jonathan Achenbach
申请号:
US12455661
公开号:
US09345531B2
申请日:
2009.06.05
申请国别(地区):
US
年份:
2016
代理人:
摘要:
RF energy for skin conditioning with a non-ablative electrode is applied with a handpiece incorporating means to prevent electrical shock to the patient when the energized electrode surface makes or breaks contact with the skin. In a preferred embodiment, switch means are incorporated in the handpiece and configured such that the active electrode surface is not energized until it is in actual contact with the patient's skin, and remains energized only while the active electrode surface remains in contact with the patient's skin, so that no voltage is present on the electrode, when an air gap whose dielectric breakdown can cause an electrical shock to the patient arises, immediately before or immediately after skin contact during a skin conditioning procedure. In another preferred embodiment, the electrode to skin impedance change as the electrode touches the skin is used to activate a switch that transfers RF to the electrode.
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