Patent ID: 7503904

Claim:
A guiding catheter, comprising: an outer guide configured to navigate into the coronary sinus, the outer guide comprising a pre-formed distal curve configured to facilitate cannulation of the coronary sinus from the superior vena cava through the right ventricle by the outer guide, a guide lumen, an accessory lumen, a sensor, a distal region flexible relative to a proximal region, and an inflation lumen, the guide lumen of the outer guide dimensioned to receive an implantable cardiac lead and the sensor positioned at a distal end of the outer guide; an inner guide movably disposed within the guide lumen of the outer guide, the inner guide comprising an inflation lumen, a distal region flexible relative to a proximal region, a stylet enclosed within a distal portion of the inner guide, and a pre-formed curve on a distal end of the inner guide, the distal end of the inner guide having a circumference, the inner and outer guides each configured such that the pre-formed curve of the inner guide substantially takes the shape of the outer guide when the pre-formed curve of the inner guide is retracted within the outer guide and the pre-formed curve of the inner guide assumes its pre-formed shape when extended beyond the distal end of the outer guide; an annular balloon fixably mounted on the outer guide distal of the pre-formed distal curve of the outer guide and in fluid connection with the inflation lumen of the outer guide, the annular balloon configured to seal the coronary sinus and anchor the inner guide in the coronary sinus in an inflated configuration by engagement with the coronary sinus; a fluted balloon fixably mounted around the entirety of the circumference of the inner guide distal of the pre-formed bend, the fluted balloon in fluid connection with the inflation lumen of the inner guide, the fluted balloon comprising a plurality of flutes arranged generally parallel to a longitudinal axis of the inner guide and configured to retain a fluted configuration sufficient to permit perfusion of fluid flow relative to the fluted balloon when pressurized; and at least two inflation mechanisms each independently in fluid connection with the inflation lumens of the inner and outer guides, the inflation mechanisms pressurizing and depressurizing a fluid within the inflation lumens to respectively inflate and deflate the annular and fluted balloons.