Patent ID: 6699241
Filing Date: 2004-03-02
Classification: A61B

Abstract:
A cardiac ablation applicator comprising:a catheter; a coaxial cable disposed in the catheter and having an inner conductor and an outer conductor; a spiral antenna connected to the inner conductor at an end of the coaxial cable; a balloon enclosing the spiral antenna and coupled to the catheter to form a fluid tight enclosure; and an inflation tube disposed in the catheter for inflating and deflating the balloon; the spiral antenna operative to be furled in a first elongated orientation inside the catheter for transluminal guiding of the catheter and capable of being unfurled from the catheter to a position outside of the catheter, and wherein the spiral antenna is operative to alter its orientation to a second deployed orientation, wherein the spiral antenna is configured and arranged at a position for microwave heating of surrounding tissue.