Patent ID: 7606609

Claim:
A catheter for mapping an electrical conduction pattern in a tricuspid valve region of a heart, comprising: a tubular shaft having a distal end and a proximal end, a pre-shaped distal section adjacent the distal end, the pre-shaped distal section adapted to conform to a tricuspid valve region of a heart and having a first generally circular section and a second transitional section having two alternating angles located proximal the first generally circular section, at least one lumen extending between the distal end and the proximal end, and a plurality of electrodes disposed along the first generally circular section; a handle attached to the proximal end of the shaft; a steering mechanism provided within the handle for varying a diameter of the first generally circular section; and a deflection mechanism provided within the handle for deflecting the distal section bi-directionally; wherein the electrodes are positioned in a plane parallel to the shaft when the distal section is undeflected.