A stenting system includes a stent delivery catheter having a catheter shaft with a step balloon mounted thereon. The step balloon has a proximal portion and a distal portion and wherein the proximal portion is inflatable to a larger expanded diameter than the distal portion. A two-part stent has a proximal part that is mounted ON the proximal portion of the step balloon and a distal part that is mounted ON the distal portion of the step balloon and a non-link zone between the proximal part and the distal part of the two-part stent. The proximal part and the distal part of the two-part stent are each configured with stent struts that extend like interdigitating fingers into the non-link zone to provide improved strut coverage in the carina region of the bifurcated vessel. The non-link zone effectively eliminates any difficulties in alignment of the two parts relative to one another during placement of the two-part stent in a bifurcated vessel.
