title: Component engineering for an implantable system.
abstract: Component engineering is important for the development of implantable-type rotary blood pumps (RP). The authors are conducting elementary development of an implantable artificial heart. A sensor system detects information in the living body. An automatic control system performs the drive control. Energy is provided by a transcutaneous energy transmission system (TETS). Various artificial hearts are being created. Miniaturization resulting from an increase in operating frequency is planned. A vibrating flow pump (VFP) has a reduced size of pumping chamber because of the high-speed reciprocating movement. Undulation pump ventricular assist devices (UPVAD) are small, lightweight rotary pumps. VFPs are useful in the medical treatment of multiple organ failure (MOF). UPVADs are planned to be permanent-use RPs. The purposes of these two artificial hearts differ, although they have a common component. The authors are developing TETS by using amorphous fibers, making efficient power transmission possible. Control information input from a micro or nano sensor is realized. A control algorithm has been developed and baroreflex control has been successful. Artificial heart development, fully exploiting component engineering, continues.
authors.affiliation: Department of Medical Engineering and Cardiology, Institute of Development and Aging Cancer, Tohoku University, Tohoku, Japan. qingtian@idac.tohoku.ac.jp
authors.forename: Qingtian
authors.initials: Q
authors.lastname: Wang
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Yambe
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Shiraishi
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Esashi
authors.forename: Youichi
authors.initials: Y
authors.lastname: Haga
authors.forename: Makoto
authors.initials: M
authors.lastname: Yoshizawa
authors.forename: Fumihiro
authors.initials: F
authors.lastname: Sato
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Matsuki
authors.forename: Kou
authors.initials: K
authors.lastname: Imachi
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Abe
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sasada
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Nitta
mesh_terms: D000818:Animals; D001698:Biomedical Engineering; D001783:Blood Flow Velocity; D006354:Heart, Artificial; D006353:Heart-Assist Devices; D006801:Humans; D023421:Models, Animal; D009102:Multiple Organ Failure / Q000628:therapy; D019736:Prostheses and Implants