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

Z. G. Feng, Mitsuo 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
    Place of PublicationPiscataway, NJ, United States
    PublisherIEEE
    Pages178
    Number of pages1
    Volume1
    ISBN (Print)0780356756
    Publication statusPublished - 1999
    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

    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

    Fingerprint

    High speed cameras
    Video cameras
    Pressure gradient
    Hydrodynamics

    ASJC Scopus subject areas

    • Bioengineering

    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 (Vol. 1, pp. 178). Piscataway, NJ, United States: IEEE.

    In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position. / Feng, Z. G.; Umezu, Mitsuo; Fujimoto, T.; Tsukahara, T.; Nurishi, M.; Kawaguchi, D.

    Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 1 Piscataway, NJ, United States : IEEE, 1999. p. 178.

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

    Feng, ZG, 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. vol. 1, IEEE, Piscataway, NJ, United States, pp. 178, Proceedings 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, 99/10/13.
    Feng ZG, Umezu M, Fujimoto T, Tsukahara T, Nurishi M, Kawaguchi D. 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. Vol. 1. Piscataway, NJ, United States: IEEE. 1999. p. 178
    Feng, Z. G. ; Umezu, Mitsuo ; Fujimoto, T. ; Tsukahara, T. ; Nurishi, M. ; Kawaguchi, D. / In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 1 Piscataway, NJ, United States : IEEE, 1999. pp. 178
    @inproceedings{3e2df3ae0f734302865e319df5ef7cb1,
    title = "In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position",
    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{\%}).",
    author = "Feng, {Z. G.} and Mitsuo Umezu and T. Fujimoto and T. Tsukahara and M. Nurishi and D. Kawaguchi",
    year = "1999",
    language = "English",
    isbn = "0780356756",
    volume = "1",
    pages = "178",
    booktitle = "Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings",
    publisher = "IEEE",

    }

    TY - GEN

    T1 - In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position

    AU - Feng, Z. G.

    AU - Umezu, Mitsuo

    AU - Fujimoto, T.

    AU - Tsukahara, T.

    AU - Nurishi, M.

    AU - Kawaguchi, D.

    PY - 1999

    Y1 - 1999

    N2 - 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%).

    AB - 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%).

    UR - http://www.scopus.com/inward/record.url?scp=0033330010&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0033330010&partnerID=8YFLogxK

    M3 - Conference contribution

    SN - 0780356756

    VL - 1

    SP - 178

    BT - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

    PB - IEEE

    CY - Piscataway, NJ, United States

    ER -