Medical instrument working end and method for endoluminal treatments
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United States of America Patent
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Jun 28, 2005
Grant Date -
Jun 12, 2003
app pub date -
Jan 18, 2003
filing date -
Oct 28, 1998
priority date (Note) -
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Abstract
A medical instrument that utilizes electrical energy delivery between first and second opposing polarity electrodes in an interior bore of a working end to cause vaporization of an inflowing fluid media. The vaporization and expansion of the fluid media creates pressure gradients in the working end that causes heated vapor to propagate distally from the working end. The propagation or jetting of the vapor media is used to controllably cause thermal effects in endoluminal environments. The instrument and method can be used to shrink and occlude blood vessels in a treatment for varicose veins.
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