Method and apparatus for treating venous insufficiency using directionally applied energy
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United States of America Patent
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Mar 7, 2000
Issued Date -
N/A
app pub date -
Mar 4, 1997
filing date -
Mar 5, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A catheter introduces electrodes in a vein for a minimally invasive treatment of venous insufficiency by the application of energy to cause selective heating of the vein. The catheter is positioned within the vein to be treated, and the electrodes on the catheter are moved toward one side of the vein. RF energy is applied in a directional manner from the electrodes at the working end of the catheter to cause localized heating and corresponding shrinkage of the adjacent venous tissue, which may include commissures, leaflets and ostia. Fluoroscopy or ultrasound may be used to detect shrinkage of the vein. After treating one section of the vein, the catheter can be repositioned to place the electrodes to treat different sections of the vein until all desired venous valves are repaired and rendered functionally competent.
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