Endovenous closure of varicose veins with mid infrared laser
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United States of America Patent
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N/A
Issued Date -
May 13, 2004
app pub date -
Oct 30, 2003
filing date -
Oct 31, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention is an improved method and device for treating varicose veins 200 or the greater saphenous vein 202. The method comprises the use of infrared laser radiation in the region of 1.2 to 1.8 um in a manner from inside the vessel 200 or 202 such that the endothelial cells of the vessel wall 704 are damaged and collagen fibers in the vessel wall 704 are heated to the point where they permanently contract, the vessel 200 or 202 is occluded and ultimately resorbed. The device includes a laser 102 delivered via a fiber optic catheter 300 that may have frosted or diffusing fiber tips 308. A motorized pull back device 104 is used, and a thermal sensor 600 may be used to help control the power required to maintain the proper treatment temperature.
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