Method and device for electro microsurgery in a physiological liquid environment
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United States of America Patent
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Sep 16, 2003
Grant Date -
May 23, 2002
app pub date -
Jan 10, 2002
filing date -
Sep 26, 1996
priority date (Note) -
Expired
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Abstract
A method and device for electrical emulation of pulsed laser is disclosed. The device utilizes high voltage electrical discharges of sub-microsecond duration in a liquid medium to produce cavitation bubbles of sub-millimeter size for use in high speed precision cutting. Such bubbles are produced by a micro-electrode (1.6) having a central wire having a diameter of 1 microns to 100 microns embedded in an insulator. A coaxial electrode (1.9) surrounds the insulator, and may be spaced from the outer surface of insulator to provide a path for removing tissue.
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