First Trial of the Chronic Animal Examination of the Artificial Myocardial Function

Yasuyuki Shiraishi, T. Yambe, Y. Saijo, K. Matsue, M. Shibata, H. Liu, T. Sugai, A. Tanaka, S. Konno, H. Song, A. Baba, K. Imachi, M. Yoshizawa, S. Nitta, H. Sasada, K. Tabayashi, R. Sakata, Y. Sato, Mitsuo Umezu, D. Homma

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

    1 Citation (Scopus)

    Abstract

    Thromboembolic and haemorrhagic complications are the primary causes of mortality and morbidity in patients with artificial hearts, which are known to be induced by the interactions between blood flow and artificial material surfaces. The authors have been developing a new mechanical artificial myocardial assist device by using a sophisticated shape memory alloy fibre in order to achieve the mechanical cardiac support from outside of the heart without a direct blood contacting surface. The original material employed as the actuator of artificial myocardial assist devices was 100um fibred-shaped, which was composed of covalent and metallic bonding structure and designed to generate 4-7% shortening by Joule heating induced by the electric current input. Prior to the experiment, the myocardial streamlines were investigated by using a MDCT, and the design of artificial myocardial assist devices were refined based on the concept of Torrent-Guasp's myocardial band theory. As the hydrodynamic or hemodynamic examination exhibited the remarkable increase of cardiac systolic work by the assistance of the artificial myocardial contraction in the originally designed mock circulatory system as well as in the acute animal experiments, the chronic animal test has been started in a goat. Total weight of the device including the actuator was around 150g, and the electric power was supplied percutaneously. The device could be successfully installed into thoracic cavity, which was able to be girdling the left ventricle. In the chronic animal trial, the complication in respect to the diastolic dysfunction by the artificial myocardial compression was not observed.

    Original languageEnglish
    Title of host publicationIFMBE Proceedings
    Pages2268-2271
    Number of pages4
    Volume23
    DOIs
    Publication statusPublished - 2009
    Event13th International Conference on Biomedical Engineering, ICBME 2008 -
    Duration: 2008 Dec 32008 Dec 6

    Other

    Other13th International Conference on Biomedical Engineering, ICBME 2008
    Period08/12/308/12/6

    Fingerprint

    Animals
    Blood
    Actuators
    Artificial heart
    Joule heating
    Hemodynamics
    Electric currents
    Shape memory effect
    Hydrodynamics
    Experiments
    Fibers

    Keywords

    • Artificial myocardium
    • chronic animal experiment
    • hemodynamics
    • myocardial band
    • shape memory alloy fibre

    ASJC Scopus subject areas

    • Biomedical Engineering
    • Bioengineering

    Cite this

    Shiraishi, Y., Yambe, T., Saijo, Y., Matsue, K., Shibata, M., Liu, H., ... Homma, D. (2009). First Trial of the Chronic Animal Examination of the Artificial Myocardial Function. In IFMBE Proceedings (Vol. 23, pp. 2268-2271) https://doi.org/10.1007/978-3-540-92841-6_569

    First Trial of the Chronic Animal Examination of the Artificial Myocardial Function. / Shiraishi, Yasuyuki; Yambe, T.; Saijo, Y.; Matsue, K.; Shibata, M.; Liu, H.; Sugai, T.; Tanaka, A.; Konno, S.; Song, H.; Baba, A.; Imachi, K.; Yoshizawa, M.; Nitta, S.; Sasada, H.; Tabayashi, K.; Sakata, R.; Sato, Y.; Umezu, Mitsuo; Homma, D.

    IFMBE Proceedings. Vol. 23 2009. p. 2268-2271.

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

    Shiraishi, Y, Yambe, T, Saijo, Y, Matsue, K, Shibata, M, Liu, H, Sugai, T, Tanaka, A, Konno, S, Song, H, Baba, A, Imachi, K, Yoshizawa, M, Nitta, S, Sasada, H, Tabayashi, K, Sakata, R, Sato, Y, Umezu, M & Homma, D 2009, First Trial of the Chronic Animal Examination of the Artificial Myocardial Function. in IFMBE Proceedings. vol. 23, pp. 2268-2271, 13th International Conference on Biomedical Engineering, ICBME 2008, 08/12/3. https://doi.org/10.1007/978-3-540-92841-6_569
    Shiraishi Y, Yambe T, Saijo Y, Matsue K, Shibata M, Liu H et al. First Trial of the Chronic Animal Examination of the Artificial Myocardial Function. In IFMBE Proceedings. Vol. 23. 2009. p. 2268-2271 https://doi.org/10.1007/978-3-540-92841-6_569
    Shiraishi, Yasuyuki ; Yambe, T. ; Saijo, Y. ; Matsue, K. ; Shibata, M. ; Liu, H. ; Sugai, T. ; Tanaka, A. ; Konno, S. ; Song, H. ; Baba, A. ; Imachi, K. ; Yoshizawa, M. ; Nitta, S. ; Sasada, H. ; Tabayashi, K. ; Sakata, R. ; Sato, Y. ; Umezu, Mitsuo ; Homma, D. / First Trial of the Chronic Animal Examination of the Artificial Myocardial Function. IFMBE Proceedings. Vol. 23 2009. pp. 2268-2271
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    AU - Sugai, T.

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    AU - Baba, A.

    AU - Imachi, K.

    AU - Yoshizawa, M.

    AU - Nitta, S.

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