TY - GEN
T1 - Contraction support for the right ventricle by a shape memory alloy fibered artificial myocardium
AU - Shiraishi, Yasuyuki
AU - Yamada, Akihiro
AU - Yambe, Tomoyuki
AU - Homma, Dai
AU - Katahira, Shintaro
AU - Masaki, Naoki
AU - Hayatsu, Yukihiro
AU - Akiyama, Masatoshi
AU - Saiki, Yoshikatsu
PY - 2015/9/8
Y1 - 2015/9/8
N2 - Mechanical cardiac support by using artificial organs improves the circulatory condition in the patients with heart failure. However, the thrombotic and bleeding complications might be caused by the use of these artificial prosthetic internal organs because of their direct attachment with blood. We have been developing an implantable artificial myocardial assist device that can support the natural ventricular contraction from outside of the heart. A shape memory alloy fiber was employed for the implantable design of the myocardial assistance. In this study, we focused on the right ventricular assist by the artificial myocardium using shape memory alloy fibers. We fabricated a prototype of the right ventricular contraction support based on the hinge mechanism design with shape memory fibered actuators. Fundamental characteristics of the contractile effects of the design, as well as its deformation, were examined, and the hemodynamic changes were investigated in the acute animal experiments. As a result, the supporting depth from the ventricular wall increased to be 35 mm, and the volumetric assistance showed around 50 mL incremental assist by the changes in the displacement of the actuator.
AB - Mechanical cardiac support by using artificial organs improves the circulatory condition in the patients with heart failure. However, the thrombotic and bleeding complications might be caused by the use of these artificial prosthetic internal organs because of their direct attachment with blood. We have been developing an implantable artificial myocardial assist device that can support the natural ventricular contraction from outside of the heart. A shape memory alloy fiber was employed for the implantable design of the myocardial assistance. In this study, we focused on the right ventricular assist by the artificial myocardium using shape memory alloy fibers. We fabricated a prototype of the right ventricular contraction support based on the hinge mechanism design with shape memory fibered actuators. Fundamental characteristics of the contractile effects of the design, as well as its deformation, were examined, and the hemodynamic changes were investigated in the acute animal experiments. As a result, the supporting depth from the ventricular wall increased to be 35 mm, and the volumetric assistance showed around 50 mL incremental assist by the changes in the displacement of the actuator.
KW - artificial myocardium
KW - right ventricle
KW - shape memory alloy fiber
UR - http://www.scopus.com/inward/record.url?scp=84957646839&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84957646839&partnerID=8YFLogxK
U2 - 10.1109/ASCC.2015.7244735
DO - 10.1109/ASCC.2015.7244735
M3 - Conference contribution
AN - SCOPUS:84957646839
T3 - 2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015
BT - 2015 10th Asian Control Conference
A2 - Selamat, Hazlina
A2 - Ramli, Hafiz Rashidi Haruna
A2 - Faudzi, Ahmad Athif Mohd
A2 - Rahman, Ribhan Zafira Abdul
A2 - Ishak, Asnor Juraiza
A2 - Soh, Azura Che
A2 - Ahmad, Siti Anom
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th Asian Control Conference, ASCC 2015
Y2 - 31 May 2015 through 3 June 2015
ER -