In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position

Z. G. Feng, M. Umezu, T. Fujimoto, T. Tsukahara, M. Nurishi, D. Kawaguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Four different designs of 25 mm bileaflet valves were tested in the mitral position using our originally developed in vitro test apparatus. By the aid of a high-speed video camera, it was observed that the SJM HP valve opened fully and the CM nearly opened fully (76°±2°). Max opening angle of the ATS and the On-X was 72°±3° and 81°±2°, respectively, whereas their opening angle was designed as 85° and 90°, respectively. Pressure gradients of the CM and the ATS were consistently higher than those of the On-X and the SJM HP. Closing volume for all the valves was within the acceptable range (<8%).

Original languageEnglish
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
PublisherIEEE
Number of pages1
ISBN (Print)0780356756
Publication statusPublished - 1999 Dec 1
EventProceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS) - Atlanta, GA, USA
Duration: 1999 Oct 131999 Oct 16

Publication series

NameAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume1
ISSN (Print)0589-1019

Other

OtherProceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS)
CityAtlanta, GA, USA
Period99/10/1399/10/16

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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  • Cite this

    Feng, Z. G., Umezu, M., Fujimoto, T., Tsukahara, T., Nurishi, M., & Kawaguchi, D. (1999). In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings; Vol. 1). IEEE.