We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effect of valve leaflet surface patterning on valve hydrodynamic performance.
- Authors
Wang, Aili; Wang, Yumiao; Liu, Wanbing; Liu, Li; Zhou, Jianye
- Abstract
Objective: We aimed to elucidate the effects of the micro-structure of the pyrolytic carbon for artificial heart valves on its hydrodynamic performance. Methods: Bileaflet mechanical valves of GKS 23 and 29 A were randomly selected. According to ISO5840, mean transvalvular pressure (MPG), regurgitation fraction (RF), and effective orifice area (EOA) of valve were assessed. Then, parallel-groove pattern was constructed by laser etching on leaflet surface, and the valves were subjected again to the same test. Results: Compared with before patterning at 2, 3.5, 5, and 7 L/min, the MPG of the valves in two specifications were higher, the EOA was larger in 23 A, but smaller in 29 A, and the RF was contrary to EOA. At 5 L/min, the RF in both specifications was lower after etching at 45 bpm. At 70 bpm however, the RF in 23 A decreased, in 29 A increased. Conclusion: The parallel-groove pattern on leaflet surface affected the hemodynamic performance of the valve prostheses.
- Publication
International Journal of Artificial Organs, 2023, Vol 46, Issue 10/11, p569
- ISSN
0391-3988
- Publication type
Article
- DOI
10.1177/03913988231192118