Patent ID: 7540853

Claim:
A catheter for diverting blood flow through a cardiac vessel during ablation, comprising: a catheter body having a proximal end and a distal end; an inflation lumen in fluid connection with an inflation mechanism situated proximate the proximal end of the catheter body; a diversion balloon mounted at the distal end of the catheter body and inflatable to at least partially block blood flow through the cardiac vessel; one or more distal ports provided on the catheter body distal to the diversion balloon; one or more proximal ports provided on the catheter body proximal to the diversion balloon, wherein the proximal ports are in fluid connection with the distal ports so that a flow of blood through the cardiac vessel is directed via the distal and proximal ports so as to divert blood flow from a cardiac surface intended for ablation; an inner member slidable within the catheter body configured to selectively block blood flow through one or more of the one or more proximal ports and control blood flow; an arrangement of ablation electrodes deployable from a folded configuration, the arrangement of ablation electrodes configured to substantially conform to an exterior surface of the catheter body in an un-deployed folded configuration and slide relative to the catheter body to unfold from the exterior surface of the catheter body and ablate the cardiac surface in a deployed configuration; and a sheath disposed around the catheter body, wherein distal motion of the sheath relative to the catheter body deploys the arrangement of ablation electrodes to the deployed configuration.