Patent ID: 6973339

Claim:
Apparatus for electrical mapping of a pulmonary vein of a heart, comprising: (a) a catheter, which comprises: (i) a curved section comprising a single-coil position sensor for generating five position and orientation dimensions, and one or more electrodes, adapted to measure an electrical property of the pulmonary vein; and (ii) a base section having a distal end attached to a proximal end of the curved section, the base section comprising a multi-coil position sensor within 3 mm of the distal end thereof for generating six position and orientation dimensions; and (b) a computer for determining five-dimensional dispositions of the single-coil position sensor and six-dimensional dispositions of the multi-coil position sensor and combining the electrical property of the pulmonary vein for determining electrical abnormalities in the pulmonary vein for selecting target tissue to ablate in the pulmonary vein.