Influence of deformation of femoropopliteal artery on choice of stents

Abstract

In recent years, stent implantation has played an important role in solving femoropopliteal artery disease. Because part of the femoropopliteal artery is at the level of the knee joint, the deformation of this segment of the artery is greater when the lower limbs are bent, and the stent fracture rate is higher. Studies have showed that the deformation of the femoropopliteal artery mainly includes bending, twisting, axial compression and radial compression. The selection of stents with mechanical properties suitable for the deformation of artery in different sections can reduce the risk of fracture. The commonly used clinical stent designs (classic laser engraving stent, braided stent and covered stent) have large differences in mechanical properties. Braided stents with higher radial support are more suitable for treating popliteal artery disease, while covered stent has good compliance and can be used in all segments. Of course, the existing types of stents cannot meet all mechanical requirements. The design of the new stent needs to be studied, and its clinical results need to be confirmed by research.