Comparison of Hemodynamic Performances Between Commercial Available Stents Design on Stenosed Femoropopliteal Artery

Abstract

Peripheral arteries disease (PAD) such as atherosclerosis is a disease where restriction of blood flow in the artery occurs when the size of arterial lumen narrows due to fat hardening and plaque deposition. PAD may cause claudication, critical limb ischemia as well as stroke. In recent years, endovascular approach of obstructive arterial disease such as femoropopliteal artery stenting is used as a treatment to overcome clotting. Stent is a small structure that provides scaffolding to hold arterial lumen open and allows blood flow through it. Therefore, many stents are developed to overcome the disease. Many researchers claimed that different shapes of stent geometry influenced the blood flow characteristics in the stented artery. This study aims to determine the hemodynamic performances of femoropopliteal artery that are stented with different commercial stents. Simulations are performed on stented femoropopliteal arteries to determine hemodynamic parameter of velocity distribution, pressure drops and wall shear stress (WSS) along the artery. From the results, the velocity and pressure distributions of the stented artery showed variant blood flow with the range of 0-0.19 m/s and 14590-14730 Pa respectively. The pressure drops of the stented artery presents acceptable values below than 100mmHg. The maximum of WSS is 2.52 Pa whilst the minimum of WSS is 1.61 Pa. In summary, the Supera stent, Complete SE stent and Absolute Pro are chosen as superior hemodynamic performances when they represent stable low velocity, normal pressure including lowest pressure drops and lowest maximum wall shear stress as compared to other stents.