Methods and apparatus for accelerated wear testing of prosthetic heart valves apply non-sinusoidal pressure waveforms. The waveforms may maintain a threshold reverse pressure for a desired duration while limiting a peak reverse pressure. Apparatus may include a fluid impeller such as a bellows or a ...
Stent/Stent Graft Testing Heart Valve / Valve Repair Testing Cardiac Occluder Testing Vascular Graft Testing Vena Cava Filter Testing Catheter Testing Guidewire & Dilator Testing Material Fatigue Testing Coating & Particulate Testing MRI Compatibility Testing Corrosion Testing Silicone Vessels Silicone Vessels ...
A tissue heart valve test device which is capable of testing the valves in a rapid manner before implantation to ensure that there are no unacceptable leaks or flaws. The test device enables the valve to be tested in the operating room d... CS Love,JW Love,JH Calvin - US 被引量: 67...
11 The in vitro assessments are encouraging, but additional testing remains necessary, given the well-documented limitations of prior polymer valves. Other groups12 have reported polymeric valves achieving ISO minimum standards for in vitro valve testing, and whether silicone or a newer polymer results...
The current standards for accelerated heart valve testing have considerable differences in test conditions. Another problem arises from the fact that such test systems are not standardized at all. It was shown earlier that different test systems generate totally different valve loading, even if operatin...
(tension). Because of the different geometries between the valve types and tethering chordae tendineae of the TV and MV, these three loading types are varied between the valves. Most of the research concerned with heart valve mechanics has been conducted on the AV (Adamczyk and Vesely, 2002;...
BACKGROUND: The degree to which the results of valve culture depend on different laboratory procedures as well as other factors is unknown. The aim of this study was to compare the results of heart valve culture at 2 different endocarditis centres in order to clarify this. METHODS: The study...
Treatment for end-stage disease is heart valve replacement, but both mechanical and biopros... M.W. Maxfield,M.A. Cleary,C.K. Breuer - Elsevier Inc. 被引量: 4发表: 2014年 Tissue Engineering Heart Valves - a Review of More than Two Decades into Preclinical and Clinical Testing for ...
C. et al. in Experimental Models of Cardiovascular Diseases: Methods and Protocols (ed. Ishikawa, K.) 145–159 (Springer, 2018). Mastikhina, O. et al. Human cardiac fibrosis-on-a-chip model recapitulates disease hallmarks and can serve as a platform for drug testing. Biomaterials 233, ...
Recent scientific and technological progress has stimulated the goal of generating a “tissue-engineered” heart valve, a living valve replacement that would obviate the complications of conventional valve replacement, adapt to changing environmental conditions in the recipient, and potentially grow with a...