Electrosurgical instrument having a chamber to volatize a liquid
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United States of America Patent
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-
Mar 2, 2004
Grant Date -
Feb 13, 2003
app pub date -
Apr 17, 2002
filing date -
Feb 12, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An electrosurgical instrument is provided which includes a holding formation, a probe shaft, an electric conductor, and a probe tip. The probe shaft is secured to the holding formation and has an elongated section extending therefrom. The electric conductor extends along the elongated section. The probe tip is located on a distal end of the probe shaft opposing the holding formation. The probe tip defines a volatization chamber with a mouth out of the probe tip. The probe tip includes an electrode, to which RF current is provided through the electric conductor. The electrode heats an area adjacent to the probe tip. The electrode also heats a liquid in the first volatization chamber to evaporate the liquid into a vapor pocket that ejects from the first volatization chamber through the mouth out of the probe tip. A pump effect is created so that the liquid maintains the probe tip at a more stable temperature.
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