Method and system for photoselective vaporization of the prostate, and other tissue
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United States of America Patent
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Issued Date -
Nov 25, 2004
app pub date -
Jun 24, 2004
filing date -
Dec 15, 2000
priority date (Note) -
Abandoned
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Abstract
A method for photoselective vaporization of prostate tissue includes delivering laser radiation to the treatment area on the tissue, via an optical fiber for example, wherein the laser radiation has a wavelength and irradiance in the treatment area on the surface of the tissue sufficient because vaporization of a substantially greater volume of tissue than a volume of residual coagulated tissue caused by the laser radiation. The laser radiation is generated using a diode-pumped neodymium doped solid-state laser, including optics producing a second or higher harmonic output with greater than 20 watts average output power. The delivered laser radiation has a wavelength for example in a range of about 200 nm to about 650 nm, and has an average irradiance in the treatment area greater than about 10 kilowatts/cm.sup.2, in a spot size of at least 0.05 mm.sup.2.
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