Numerical biomechanics modelling of indirect mitral annuloplasty treatments for functional mitral regurgitation

Lee Galili, Adi White Zeira, Gil Marom

Research output: Contribution to journalArticlepeer-review

Abstract

Mitral valve regurgitation (MR) is a common valvular heart disease where an improper closure leads to leakage from the left ventricle into the left atrium. There is a need for less-invasive treatments such as percutaneous repairs for a large inoperable patient population. The aim of this study is to compare several indirect mitral annuloplasty (IMA) percutaneous repair techniques by finite-element analyses. Two types of generic IMA devices were considered, based on coronary sinus vein shortening (IMA-CS) to reduce the annulus perimeter and based on shortening of the anterior-posterior diameter (IMA-AP). The disease, its treatments, and the heart function post-repair were modelled by modifying the living heart human model (Dassault Systèmes). A functional MR pathology that represents ischaemic MR was generated and the IMA treatments were simulated in it, followed by heart function simulations with the devices and leakage quantification from blood flow simulations. All treatments were able to reduce leakage, the IMA-AP device achieved better sealing, and there was a correlation between the IMA-CS device length and the reduction in leakage. The results of this study can help in bringing IMA-AP to market, expanding the use of IMA devices, and optimizing future designs of such devices.

Original languageEnglish
Article number211464
JournalRoyal Society Open Science
Volume9
Issue number1
DOIs
StatePublished - 1 Jan 2022

Keywords

  • Mitral valve
  • biomechanics
  • cardiovascular devices
  • indirect mitral annuloplasty (IMA)
  • umerical models

Fingerprint

Dive into the research topics of 'Numerical biomechanics modelling of indirect mitral annuloplasty treatments for functional mitral regurgitation'. Together they form a unique fingerprint.

Cite this