Several parameters can be used to limit the risk of the restenosis associated with inserting a stent. The first, as we have seen, is the use of drug-eluting stents to contain intimal proliferation.
But that’s not the only parameter. The dimensions of the stent, i. e. its length and width, as well as the mesh size of the stent graft are also important. Technological developments over the past twenty years have led to many advances. In the past, the slotted tubes used were inflexible and caused major problems during implantation. The so-called “coil” stents had insufficient radial strength, which could lead to tissue prolapse.
Today, the physical parameters of stents have greatly improved, including better stent release, new mesh size for better support and better visibility during radiographic examinations. These improvements have had a significant impact on procedural success and restenosis rates.