Patent ID: 7399307

Claim:
A method for treating an occlusive region of a patient's vasculature using a tubular member comprising proximal and distal ends, and a distal portion comprising a first lumen therein, the first lumen comprising an end port at or adjacent to the distal end and a first side port located proximally to the end port, the tubular member further comprising a second lumen extending from the proximal end to a second side port located proximally to the first side port, and an expandable member between the first and second side ports, the method comprising: placing a guidewire through a patient's vasculature to an occlusive region to be treated; backloading the guidewire through the first lumen, around the expandable member, and through the second lumen; advancing the distal portion of the tubular member over the guidewire to the occlusive region; expanding the expandable member on the tubular member to at least partially isolate the occlusive region; advancing a treatment element into the occlusive region in cooperation with the tubular member; and treating the occlusive region.