Computational analysis of the effects of geometric irregularities on the interaction of an additively manufactured 316L stainless steel stent and a coronary artery

Characterisation of Process-Induced Defects in Polymeric Strut-Based Lattice Structures Produced by Powder Bed Fusion Additive Manufacturing Process

“…The importance of considering process-induced defects in evaluating the performance of 3D-printed medical products is also significant. For instance, by including manufacturing defects in the FE model of stents, Wiesent et al [89] found that manufacturing imperfections, such as surface roughness, influence stents' mechanical properties and interactions with the artery. The defect-incorporated model of the stent causes higher maximal volume stresses within the plaque and arterial wall, which might eventually harm the artery or lead to premature failure of the stent [89].…”

“…For instance, by including manufacturing defects in the FE model of stents, Wiesent et al [89] found that manufacturing imperfections, such as surface roughness, influence stents' mechanical properties and interactions with the artery. The defect-incorporated model of the stent causes higher maximal volume stresses within the plaque and arterial wall, which might eventually harm the artery or lead to premature failure of the stent [89]. Therefore, this phenomenon highlights the necessity of considering AM defects in evaluating 3D-printed products with critical roles.…”

Three-dimensional printing as a cutting-edge, versatile and personalizable vascular stent manufacturing procedure: Toward tailor-made medical devices

“…Several studies have demonstrated that stent design features are of great importance for a successful treatment due to correlations with thrombosis and in-restenosis risk [ 33, 79, 80 ] . For better clarity and understanding of this section, a schematic representation of the most important stent parts and their nomenclature are included in Figure 11A .…”