Articles Related to HiCycle Durability Tester

S. F. Melo, A. Nondonfaz, A. Aqil, A. Pierrard, A. Hulin, C. Delierneux, B. Ditkowski, M. Gustin, M. Legrand, B. M. E. Tullemans, S. L. N. Brouns, A. Nchimi, R. Carrus, A. Dejosé, J. W. M. Heemskerk, M. J. E. Kuijpers, J. Ritter, U. Steinseifer, J. C. Clauser, C. Jérôme, P. Lancellotti, and C. Oury, Biomater. Sci., 2024

Valve replacement with prosthetic heart valves has shown to substantially improve survival in patients, and is currently considered the effective treatment for aortic valve disease. Manufactured tri-leaflet NIPU valves with an internal diameter of 19 mm were placed in the aortic valve position of a left heart model (pulse duplicator equipment, from ViVitro labs). Testing of the NIPU valves in a pulse duplicator showed good hydrodynamic performance.

Other Products Cited:  Analysis and Computational Modeling  Heart Valve Testing  Pulse Duplicator

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David Meier, MD; Geoffrey W. Payne, MSc, PhD; Leila B. Mostaço-Guidolin, PhD; Rihab Bouchareb, MSc, PhD; Courtney Rich, BASc; Althea Lai, BSc; Andrew G. Chatfield, MB ChB; Mariama Akodad; Hannah Salcudean, MSc; Georg Lutter, MD; Thomas Puehler, MD; Philippe Pibarot, DVM, PhD; Keith B. Allen, MD; Adnan K. Chhatriwalla, MD; Lars Sondergaard, MD; David A. Wood, MD; John G. Webb, MD; Jonathon A. Leipsic, MD; Janarthanan Sathananthan, MPH, MBChB; Stephanie L. Sellers, MSc, PhD, EuroIntervention 2022;17:1-1

To assess the impact of bioprosthetic valve fracture (BVF) timing on long-term transcatheter heart valve (THV) durability. Valve testing was performed in the ViVitro Labs testing facilities (ViVitro Labs Inc, Victoria, Canada). Hydrodynamic testing was performed using a commercially available pulse duplicator (ViVitro Labs Inc, Victoria, Canada), meeting the equipment requirements defined in ISO 5840-3 for pulsatile flow testing (16) (Figure 1A). In this bench study, the ACn and the S3 showed acceptable hydrodynamic performances after AWT to 200M cycles, equivalent to 5 years, irrespective of BVF timing compared to no fracture.

Other Products Cited:  Heart Valve Testing

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F. Stieglmeier, M. Grab, F. König, J. Büch, C. Hagl, N. Thierfelder. Journal of the Mechanical Behavior of Biomedical Materials. Vol. 118.

… was applied, was documented. 2.9. Durability testing. To investigate the long-term durability, patches were tested in a modified high-cycle (HC) system (HiCycle Durability Tester; ViVitro Labs Inc., Victoria, CAN). A 3D printed …

Other Products Cited:  Tissue Engineering

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Ramin Zareian Jen-Chieh Tseng Robert Fraser Jeffrey Meganck Marshall Kilduff Mohammad Sarraf Danny Dvir Arash Kheradvar - Interactive CardioVascular and Thoracic Surgery, ivz024, Published: 21 February 2019

...The goal of this study was to test whether stent crimping increases the risk for early calcification.... … MA, USA). The durability experiment was performed using a standard accelerated wear test (AWT) system (HiCycle Durability Tester, ViVitro Inc., Victoria, BC, Canada) that can ac- commodate up to 6 heart valves. Among the …

Other Products Cited:  Stent and Stent/Graft

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Ram Ghosh, Gil Marom, Oren Rotman, Marvin J. Slepian, Saurabh Prabhakar, Marc Horner and Danny Bluestein -- Journal of Biomechanical Engineering doi:10.1115/1.4040600 History: Received November 06, 2017; Revised May 30, 2018

...All currently FDA-approved TAVR devices use tissue valves that were adapted to but not specifically designed for TAVR use. Emerging clinical evidence indicates that these valves may get damaged during crimping and deployment- leading to valvular calcification, thrombotic complications, and limited durability... ...Our research group has developed a novel polymeric prosthetic valve, which was optimized to reduce stresses on the leaflets, improve hemodynamics and has thrombogenic performance similar to that of a tissue valve... … The valves are then sutured to a nitinol stent for completion of the process. The valves' durability is now being assessed using a Vivitro Hi-Cycle System (Vivitro Labs, Inc … Hydrodynamic performance is being evaluated using the Vivitro left heart simulator (Vivitro Labs, Inc …

Other Products Cited:  Pulsatile Flow Simulation  Pulse Duplicator

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O Barannyk, R Fraser, P Oshkai - Journal of Biological Physics, 2017

In this paper, a long-term in vitro dynamic calcification of three porcine aortic heart valves was investigated using a combined approach that involved accelerated wear testing of the valves in the rapid calcification solution, hydrodynamic assessment of the progressive change of effective orifice area (EOA) along with the transaortic pressure gradient, and quantitative visualization of the flow. ...ViVitro Labs Inc. for providing access to their facility and equipment for this study. Compliance with ethical standards Conflict of interest Oleksandr Barannyk has been a postdoctoral fellow at ViVitro Labs Inc. under MITACS...

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Antoine Vaesken, Christian Pidancier, Nabil Chakfe, Frederic Heim Biomedical Engineering / Biomedizinische Technik. ISSN (Online) 1862-278X, ISSN (Print) 0013-5585, DOI: 10.1515/bmt-2016-0083, September 2016

Transcatheter aortic valve implantation (TAVI) is nowadays a popular alternative technique to surgical valve replacement for critical patients. Biological valve tissue has been used in these devices for over a decade now with over 100,000 implantations... ...The purpose of the present work is to study in vitro the mechanical as well as the hydrodynamic behavior of a hybrid elastic textile valve device combining non-deformable PET yarn and elastic polyurethane (PU) yarn... ... times for each valve. Durability testing of the devices. The prototypes were tested on a commercial fatigue apparatus (Vivitro Labs Inc., Victoria, Canada) equipped with an electromagnetic drive mechanism. Six valve prototypes ...

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