An analysis on the opening behavior of a tilting disc heart valve using mock circulation

T. Fujimoto, Y. Maki, H. Wakui, K. Izumi, Mitsuo Umezu, K. Naemura, T. Akutsu

    Research output: Contribution to journalArticle

    Abstract

    The dynamic behavior of prosthetic heart valves, which has an influence on blood flow adjacent to the valves is important from both clinical and hemodynamic viewpoints. In this experiment, the relationship between the mode of valve opening and flow pattern through the valve was analyzed. A Bjork Shiley Monostrut valve (sewing ring diameter: 23 mm) was incorporated in a mitral position of a mock circulatory system which contains a silastic left atrium and a rubber left ventricle driven by pneumatic pressure. Changes in valvular disc angle were measured at 500 frames per second using a high speed videocamera under two conditions in which the maxima flow rates were 15 and 20 L/min. The video data indicated that the valve opening motion was greatly influenced by a flow rate pattern in the early opening period from 0 to 20 msec. At this moment, a relationship between normal force as well as drug force applied to the disc is important to determine the initial movement of the disc.

    Original languageEnglish
    Pages (from-to)687-690
    Number of pages4
    JournalJapanese Journal of Artificial Organs
    Volume26
    Issue number3
    Publication statusPublished - 1997

    Fingerprint

    Heart Valves
    Rubber
    Cardiovascular System
    Heart Atria
    Heart Ventricles
    Hemodynamics
    Pressure
    Pharmaceutical Preparations
    baysilon

    Keywords

    • High Speed Videocamera
    • Mock Circulatory System
    • Prosthetic Heat Valve

    ASJC Scopus subject areas

    • Biophysics

    Cite this

    Fujimoto, T., Maki, Y., Wakui, H., Izumi, K., Umezu, M., Naemura, K., & Akutsu, T. (1997). An analysis on the opening behavior of a tilting disc heart valve using mock circulation. Japanese Journal of Artificial Organs, 26(3), 687-690.

    An analysis on the opening behavior of a tilting disc heart valve using mock circulation. / Fujimoto, T.; Maki, Y.; Wakui, H.; Izumi, K.; Umezu, Mitsuo; Naemura, K.; Akutsu, T.

    In: Japanese Journal of Artificial Organs, Vol. 26, No. 3, 1997, p. 687-690.

    Research output: Contribution to journalArticle

    Fujimoto, T, Maki, Y, Wakui, H, Izumi, K, Umezu, M, Naemura, K & Akutsu, T 1997, 'An analysis on the opening behavior of a tilting disc heart valve using mock circulation', Japanese Journal of Artificial Organs, vol. 26, no. 3, pp. 687-690.
    Fujimoto, T. ; Maki, Y. ; Wakui, H. ; Izumi, K. ; Umezu, Mitsuo ; Naemura, K. ; Akutsu, T. / An analysis on the opening behavior of a tilting disc heart valve using mock circulation. In: Japanese Journal of Artificial Organs. 1997 ; Vol. 26, No. 3. pp. 687-690.
    @article{4fcbb81e24764f22b0886d36e31871f6,
    title = "An analysis on the opening behavior of a tilting disc heart valve using mock circulation",
    abstract = "The dynamic behavior of prosthetic heart valves, which has an influence on blood flow adjacent to the valves is important from both clinical and hemodynamic viewpoints. In this experiment, the relationship between the mode of valve opening and flow pattern through the valve was analyzed. A Bjork Shiley Monostrut valve (sewing ring diameter: 23 mm) was incorporated in a mitral position of a mock circulatory system which contains a silastic left atrium and a rubber left ventricle driven by pneumatic pressure. Changes in valvular disc angle were measured at 500 frames per second using a high speed videocamera under two conditions in which the maxima flow rates were 15 and 20 L/min. The video data indicated that the valve opening motion was greatly influenced by a flow rate pattern in the early opening period from 0 to 20 msec. At this moment, a relationship between normal force as well as drug force applied to the disc is important to determine the initial movement of the disc.",
    keywords = "High Speed Videocamera, Mock Circulatory System, Prosthetic Heat Valve",
    author = "T. Fujimoto and Y. Maki and H. Wakui and K. Izumi and Mitsuo Umezu and K. Naemura and T. Akutsu",
    year = "1997",
    language = "English",
    volume = "26",
    pages = "687--690",
    journal = "Japanese Journal of Artificial Organs",
    issn = "0300-0818",
    publisher = "Japanese Society for Artificial Organs and Tissues",
    number = "3",

    }

    TY - JOUR

    T1 - An analysis on the opening behavior of a tilting disc heart valve using mock circulation

    AU - Fujimoto, T.

    AU - Maki, Y.

    AU - Wakui, H.

    AU - Izumi, K.

    AU - Umezu, Mitsuo

    AU - Naemura, K.

    AU - Akutsu, T.

    PY - 1997

    Y1 - 1997

    N2 - The dynamic behavior of prosthetic heart valves, which has an influence on blood flow adjacent to the valves is important from both clinical and hemodynamic viewpoints. In this experiment, the relationship between the mode of valve opening and flow pattern through the valve was analyzed. A Bjork Shiley Monostrut valve (sewing ring diameter: 23 mm) was incorporated in a mitral position of a mock circulatory system which contains a silastic left atrium and a rubber left ventricle driven by pneumatic pressure. Changes in valvular disc angle were measured at 500 frames per second using a high speed videocamera under two conditions in which the maxima flow rates were 15 and 20 L/min. The video data indicated that the valve opening motion was greatly influenced by a flow rate pattern in the early opening period from 0 to 20 msec. At this moment, a relationship between normal force as well as drug force applied to the disc is important to determine the initial movement of the disc.

    AB - The dynamic behavior of prosthetic heart valves, which has an influence on blood flow adjacent to the valves is important from both clinical and hemodynamic viewpoints. In this experiment, the relationship between the mode of valve opening and flow pattern through the valve was analyzed. A Bjork Shiley Monostrut valve (sewing ring diameter: 23 mm) was incorporated in a mitral position of a mock circulatory system which contains a silastic left atrium and a rubber left ventricle driven by pneumatic pressure. Changes in valvular disc angle were measured at 500 frames per second using a high speed videocamera under two conditions in which the maxima flow rates were 15 and 20 L/min. The video data indicated that the valve opening motion was greatly influenced by a flow rate pattern in the early opening period from 0 to 20 msec. At this moment, a relationship between normal force as well as drug force applied to the disc is important to determine the initial movement of the disc.

    KW - High Speed Videocamera

    KW - Mock Circulatory System

    KW - Prosthetic Heat Valve

    UR - http://www.scopus.com/inward/record.url?scp=0030949910&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0030949910&partnerID=8YFLogxK

    M3 - Article

    AN - SCOPUS:0030949910

    VL - 26

    SP - 687

    EP - 690

    JO - Japanese Journal of Artificial Organs

    JF - Japanese Journal of Artificial Organs

    SN - 0300-0818

    IS - 3

    ER -