Abstract 301: A Novel Tram Stent Method in Treatment of Coronary Bifurcation Lesions
Aims: A novel coronary stent was designed for the treatment of coronary bifurcation lesion, and it was investigated for its performance by finite element analysis.
Methods and Results: A coronary 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 connections that had a profile of a tram. Laser cutting and shape setting of the stent was performed, and thereafter the stent was deployed over a balloon. The contact pressure, stresses on the artery wall, stresses on the stent, the maximal principal log strain of the main artery and the side-branch were studied. The finite element 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. At the confluence of the bifurcation on either side of the side branch origin the Von Mises stresses were marginally increased. However, the stresses at the bifurcation were significantly lesser than the stresses of the currently existing techniques used in the treatment of bifurcation lesions. Further, the tram area was studied parametrically to reduce the stresses. A firm lesion model with a stenosis of 80% was then created with a discrete lesion in side-branch and the main vessel. The stent was deployed in the main branch and the side branch was stented at the ostium. The stresses at the bifurcation and the main vessel was further reduced and the stent deployed well.
Conclusions: There is a potential for a novel Tram-stent method in the treatment of coronary bifurcation lesions.
Author Disclosures: M.C. Arokiaraj: None.
- © 2015 by American Heart Association, Inc.