In as many as half a million percutaneous coronary stenting procedures a year there is a bifurcation lesion — where a side artery branches off the main artery — presenting a particularly challenging situation for the cardiologist trying to treat the patient with only a conventional tubular stent. Because treating these bifurcation lesions using currently available stent systems are time consuming and difficult, the side branch is often left unstented, leaving it vulnerable to higher rates of restenosis following implantation. (Medical Device Daily)