Patent ID: 8109985

Claim:
A stent delivery catheter for positioning a stent across a lesion of a blood vessel, the stent delivery catheter comprising: an elongate shaft having a proximal end, a proximal region proximate the proximal end, a distal end, and a distal region proximate the distal end; an inflation balloon including a proximal waist, a distal waist and a central region between the proximal waist and the distal waist, the inflation balloon coupled to the distal region of the elongate shaft; a stent having a proximal end, a distal end and a length from the proximal end to the distal end, the stent disposed around the central region of the inflation balloon; an occlusion balloon secured to the elongate shaft proximal of the inflation balloon, the occlusion balloon having a proximal waist secured to the elongate shaft and a distal waist secured to the elongate shaft, the occlusion balloon including a first folded-over portion extending distal of the distal waist to a distalmost extent of the occlusion balloon and a second folded-over portion extending proximal of the proximal waist to a proximalmost extent of the occlusion balloon, the occlusion balloon configured to roll onto itself as the inflation balloon and stent are advanced across the lesion; and a fluid discharge port located distal of the occlusion balloon, the fluid discharge port configured to discharge a fluid exterior of the elongate shaft.