Finite element analysis demonstrated that a novel Tram stent method for coronary bifurcation lesions resulted in low peak strain (<0.03) and preserved the side branch with minimal stress increases.
Does a novel Tram stent improve biomechanical stress and strain in a coronary bifurcation model compared to existing techniques?
A novel Tram stent design for coronary bifurcation lesions demonstrated favorable biomechanical properties with lower stress and strain compared to historical data of conventional techniques in a finite element model.
A novel stent was designed for the treatment of coronary bifurcation lesion, and it was investigated for its performance by finite element analysis. This study was performed in search of a novel method of treatment of bifurcation lesion with provisional stenting. A bifurcation model was created with the proximal vessel of 3.2 mm diameter, and the distal vessel after the side branch (2.3 mm) was 2.7 mm. A novel stent was designed with connection links that had a profile of a tram. Laser cutting and shape setting of the stent was performed, and thereafter it was crimped and deployed over a balloon. The contact pressure, stresses on the arterial wall, stresses on the stent, the maximal principal log strain of the main artery and the side-branch were studied. The study was performed in Abaqus, Simulia. The stresses on the main branch and the distal branch were minimally increased after deployment of this novel stent. The side branch was preserved, and the stresses on the side branch were lesser; and at the confluence of bifurcation on either side of the side branch origin the von-Mises stress was marginally increased. The stresses and strain at the bifurcation were significantly lesser than the stresses and strain of the currently existing techniques used in the treatment of bifurcation lesions though the study was primarily focused only on the utility of the new technology. There is a potential for a novel Tram-stent method in the treatment of coronary bifurcation lesions.
Arokiaraj et al. (Thu,) conducted a other in Coronary bifurcation lesions. Novel Tram Stent vs. Conventional bifurcation stenting methods was evaluated on Von-Mises stress and principal log strain. Finite element analysis demonstrated that a novel Tram stent method for coronary bifurcation lesions resulted in low peak strain (<0.03) and preserved the side branch with minimal stress increases.
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