A system and method providing a catheter assembly for engaging a stenosis. Theassembly includes a catheter defining a first lumen and a second lumen spacedapart and disposed about a longitudinal axis. The catheter includes an openingin communication with the first lumen to define a flow path having an angleincident to the longitudinal axis. A first marker； and a second markerdisposed on the catheter are spaced equidistantly from the opening. Theassembly includes a balloon having a first end and a second end each sealedabout the catheter and equidistantly from the opening to define a holdingvolume therebetween. The opening is disposed within the holding volume therebyplacing the first lumen in sealed fluid communication with the holding volume.In a preferred embodiment, the catheter assembly includes a stent disposedabout the balloon, and the balloon is configured to engage the stent with astenosis.
