| 主权项 |
1. Apparatus for cardiac treatment comprising:
(a) a catheter having proximal and distal end and defining a catheter axis; (b) an expansible ablation device including one or more balloons mounted to said catheter at or adjacent the distal end thereof, said ablation device having a collapsed condition and an expanded condition, said balloon ablation device being operative to ablate cardiac tissue in proximity to the ablation device when the ablation device is in said expanded condition, said catheter and said ablation device in said expanded condition defining a port open on the distal side of said one or more balloons and a continuous passageway extending between said port and the proximal end of the catheter; and (c) an elongated sensor probe having proximal and distal ends, a main portion, an open hoop region, and a limb portion coupling the main portion to the hoop region, wherein the limb portion extends axially away from the main portion and forms an elongate loop having a major axis and a minor axis generally perpendicular to the major axis, said sensor probe including one or more electrodes disposed adjacent the distal end of the sensor probe, said sensor probe being removably positioned in said passageway with the distal end of said sensor probe projecting out of said ablation device through said port, wherein the hoop region has an unconstrained curvature in a plane orthogonal to the catheter axis and the major axis of the loop is substantially coaxial with the catheter axis. |
