A balloon catheter in which its distal tip is precisely positionable in order to control movement of the catheter through tortuous vasculature and especially through the lumen of a deployed stent is disclosed. The distal tip of the catheter is rendered radiopaque, at least at its distal-most end, to...http://www.google.com.au/patents/US6623504?utm_source=gb-gplus-sharePatent US6623504 - Balloon catheter with radiopaque distal tip
