Figure 3.

PtCr stent models according to vessel size.

Notes: Four separate stent models were developed to optimize the surface-to-artery ratio over the range of coronary vessel diameters and provide more uniform scaffolding (small vessel, small workhorse, workhorse, and large vessel). In the left image panels, circular cell diameter (red closed circles) is shown to increase with larger models, providing easy side-branch access. The right image panels represent a graphic drawing of each available size model, showing the adapted design and added connectors at the proximal stent end in the Rebel/Promus Premier version. The red open circles highlight the additional connectors to increase longitudinal robustness. In these improved designs, workhorse stent models have eight connectors proximally, and large vessel models 10. More distal stent segments are unchanged with two connectors between stent segments.