Deformation mechanics of self-expanding venous stents: Modelling and experiments

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