title: Hemodynamic simulation of blood flow in a new type of cardiac assist device named AVICENA.
abstract: The purpose of this study is to investigate the hemodynamic parameters of blood flow in a balloon as a part of a new type of cardiac assist device named AVICENA, which is implanted into the descending aorta to improve the strength of pumping blood flow in a poor-performing left ventricle. Balloon is inflated and deflated during diastole and systole, respectively. The longitudinal velocity of blood flow during balloon inflation and deflation has been considered. Through these investigations, the result reveals that the balloon inflation causes the blood flow to accelerate through the balloon and compensates the blood flow velocity required for the normal circulation system. When the balloon deflates, a reverse flow is generated and improves the perfusion of coronary arteries. Furthermore, the inlet pressure and acting force on the aortic valve for the healthy, unhealthy, and assisted heart have been compared. Result indicates that the force acting on the aortic valve has been considerably reduced for the assisted heart compare to the unhealthy or unassisted heart.
authors.affiliation: Department of Mechanical Engineering, Iran University of Science & Technology, Tehran, Iran.
authors.forename: Mansour
authors.initials: M
authors.lastname: Alizadeh
authors.affiliation: Department of Mechanical Engineering, Iran University of Science & Technology, Tehran, Iran Ptehrani@mecheng.iust.ac.ir.
authors.forename: Pedram
authors.initials: P
authors.lastname: Tehrani
authors.affiliation: Department of Mechanical Engineering, Iran University of Science & Technology, Tehran, Iran.
authors.forename: Shahrokh
authors.initials: S
authors.lastname: Rahmani
mesh_terms: D001021:Aortic Valve / Q000502:physiology; D003198:Computer Simulation; D006353:Heart-Assist Devices; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D008955:Models, Cardiovascular; D011474:Prosthesis Design
keywords: AVICENA; Cardiac assist device; deflation; hemodynamic parameters; inflation