Francis D. Pagani, MD, PhD, James W. Long, MD, PhD, Walter P

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Improved Mechanical Reliability of the HeartMate XVE Left Ventricular Assist System Francis D. Pagani, MD, PhD, James W. Long, MD, PhD, Walter P. Dembitsky, MD, Lyle D. Joyce, MD, PhD, Leslie W. Miller, MD The Annals of Thoracic Surgery Volume 82, Issue 4, Pages 1413-1418 (October 2006) DOI: 10.1016/j.athoracsur.2006.04.057 Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

Fig 1 The previous inflow graft assembly unit of the HeartMate XVE was modified by the addition of a stitch at the commissure of the inlet valve (arrow) to strengthen the attachment of the valve to the graft material to prevent valve dysfunction and reduce the risk of disconnection. The Annals of Thoracic Surgery 2006 82, 1413-1418DOI: (10.1016/j.athoracsur.2006.04.057) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

Fig 2 (Left) Original inflow valve housing design. (Right) New inflow valve housing design with polytetrafluoroethylene (PTFE) sleeve to reduce suture abrasion and preclotting surface area, titanium cylinder for protection of the tissue valve and conduit, and two-point articulation to protect against tissue valve deformation. The Annals of Thoracic Surgery 2006 82, 1413-1418DOI: (10.1016/j.athoracsur.2006.04.057) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

Fig 3 Freedom from all major device malfunctions for the VE (thin line) and XVE (thick line) groups. The Annals of Thoracic Surgery 2006 82, 1413-1418DOI: (10.1016/j.athoracsur.2006.04.057) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

Fig 4 Freedom from death caused by major device malfunction for the VE (thin line) and XVE (thick line) groups. The Annals of Thoracic Surgery 2006 82, 1413-1418DOI: (10.1016/j.athoracsur.2006.04.057) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions