Patent ID: 7496394

Claim:
A catheter for use in or near a coronary sinus of a human heart, comprising: an elongated catheter body having proximal and distal ends; a tip section fixedly attached at the distal end of the catheter body, said tip section having proximal and distal ends and carrying a plurality of electrodes, an electromagnetic sensor and a scaffolding structure having proximal and distal ends and adapted to assume an expanded configuration and a collapsed configuration, the proximal end of the scaffolding structure being fixedly attached to the tip section and the distal end of the scaffolding structure being freely slidable along the tip section; a sheath extending along the catheter body and having a length such that its distal end is adapted to reach the distal end of the scaffolding structure; and a control handle at the proximal end of the catheter body, the control handle adapted to deflect the tip section and to move the sheath proximally and distally over the scaffolding structure.