Patent ID: 7563270

Claim:
A catheter assembly comprising: an elongate guide member, the elongate guide member extending from a proximal end to a distal end of the catheter assembly; an inner tubular member, the inner tubular member disposed about a portion of the elongate guide member; an outer tubular member, the outer tubular member disposed about at least a portion of the inner tubular member; a proximal rotatable member and a distal rotatable member, the proximal rotatable member being disposed about a proximal portion of the outer tubular member, the distal rotatable member being disposed about at least one of the distal portion of the inner tubular member and the distal portion of the outer tubular member, the proximal rotatable member forming a slidable and rotatable fluid seal with the proximal portion of the outer tubular member and the distal rotating member forming a slidable and rotatable fluid seal with the at least one of the distal portion of the inner tubular member and the distal portion of the outer tubular member; and a medical balloon expandable between a first state and a second state, the medical balloon having a proximal end and a distal end, the proximal end of the medical balloon being engaged to the proximal rotatable member and the distal end of the medical balloon being engaged to the distal rotatable member.