  Deformation properties of venous stents based on braided design, chevron
design, Z design, and diamond design are compared using in vitro experiments
coupled with analytical and finite element modelling. Their suitability for
deployment in different clinical contexts is assessed based on their
deformation characteristics. Self-expanding stainless steel stents possess
superior collapse resistance compared to Nitinol stents. Consequently, they may
be more reliable to treat diseases like May-Thurner syndrome in which
resistance against a concentrated (pinching) force applied on the stent is
needed to prevent collapse. Braided design applies a larger radial pressure
particularly for vessels of diameter smaller than 75% of its nominal diameter,
making it suitable for a long lesion with high recoil. Z design has the least
foreshortening, which aids in accurate deployment. Nitinol stents are more
compliant than their stainless steel counterparts, which indicates their
suitability in veins. The semi-analytical method presented can aid in rapid
assessment of topology governed deformation characteristics of stents and their
design optimization
