Surgery – Instruments – Heat application
Patent
1996-09-26
2000-03-07
McDermott, Corrine
Surgery
Instruments
Heat application
606 28, 606 32, 606 50, 606 31, 604 20, 604105, 604113, A61B 1738
Patent
active
060333979
ABSTRACT:
A catheter delivers an electrode within a vein for a minimally invasive treatment of esophageal varices using RF energy. The catheter is introduced into and positioned within the section of the vein to be treated. The electrode radiates high frequency energy towards the vein, and the surrounding venous tissue becomes heated and begins to shrink. The extent of shrinkage of the vein is detected by fluoroscopy. The electrode remains active until there has been sufficient shrinkage of the vein. The electrode may remain active for an extended period of time so as to promote a thickening of the immediately surrounding esophageal tissue. The catheter includes a controllable member for limiting the amount of shrinkage of the vein to the diameter of the member. After treating one section of the vein, the catheter and the electrode are repositioned within the venous system to treat different sections until all desired venous sections are rendered functionally competent.
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Farley Brian E.
Laufer Michael D.
McDermott Corrine
Rodriguez Cris L.
VNUS Medical Technologies, Inc.
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