Stent Strut Malapposition & Wall Shear Stress

When a coronary stent strut protrudes into the vessel lumen — whether from design, oversizing, or malapposition against the wall — it disturbs the smooth Poiseuille flow of blood and creates a small recirculation zone in its wake. This simulator renders a cutaway segment of a stented artery, flows particles through it under a real velocity profile, and computes the wall shear stress along the vessel wall from the governing Poiseuille relation and an empirical wake-recovery model. Adjust strut protrusion height, ring spacing, mean blood velocity and viscosity to see how each factor reshapes the wall-shear-stress map, and watch the readouts track the baseline shear, the minimum (often reversed) shear inside each wake, and the fraction of the stented wall sitting below the clinically atherogenic 1.5 Pa threshold that drives in-stent restenosis.