Abstract: A photopolymerization system includes a catheter having a proximal inflatable member, a distal inflatable member, a fluid delivery lumen, and a fluid drainage lumen. The fluid delivery lumen includes at least one delivery port and the fluid drainage lumen at least one drainage port. The ports are positioned between the proximal inflatable member and the distal inflatable member. A light emission member is positioned adjacent the catheter. In a method of treating a vascular condition, the catheter is delivered to a treatment site within a vessel. The first and second inflatable members are expanded to form an enclosed treatment space within the vessel. Fluid is delivered to the treatment space through fluid delivery lumen. Excess fluid is removed from the treatment space through the fluid drainage lumen. The treatment space is exposed to light. A portion of the fluid is polymerized within the treatment space upon exposure to the light.

Abstract: A stent delivery system comprises an inner member and an expandable balloon mounted thereon in a collapsed state. A compressible stent, having a proximal edge and a distal edge, is mounted around the expandable balloon. At least first and second retention bumps are respectively affixed adjacent to the proximal and distal edges of the stent in order to reduce the longitudinal displacement of the compressible stent during insertion and/or retraction of the balloon/stent assembly.