title: The newly designed univalved artificial heart.
abstract: A univalved artificial heart (AH) powered electromagnetically in the frequency range of 1-30 Hz was developed to obtain a totally implantable AH. This small sized AH consisted of a vibrating tube, coils, magnets, and a jellyfish valve as an outlet AH valve. The fluid mechanical, hemodynamic, and hematologic properties were evaluated in a mock circulation and 10 animal experiments using adult goats. This vibrating electromagnetic AH could generate more than 10 L/min as an output volume, with 10 Hz vibration using 20 volts supplied voltage. It could also provide two kinds of flow and pressure patterns, in constant-peak and periodic-peak patterns. The values of free hemoglobin remained within acceptable limits. The authors concluded that this new type of pump was useful as a totally implantable AH, ventricular assist, or organ assist system.
authors.affiliation: Department of Medical Engineering and Cardiology, Tohoku University, Sendai, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Nitta
authors.forename: H
authors.initials: H
authors.lastname: Hashimoto
authors.forename: T
authors.initials: T
authors.lastname: Sonobe
authors.forename: Y
authors.initials: Y
authors.lastname: Katahira
authors.forename: T
authors.initials: T
authors.lastname: Yambe
authors.forename: S
authors.initials: S
authors.lastname: Naganuma
authors.forename: M
authors.initials: M
authors.lastname: Tanaka
authors.forename: N
authors.initials: N
authors.lastname: Sato
authors.forename: M
authors.initials: M
authors.lastname: Miura
authors.forename: H
authors.initials: H
authors.lastname: Mohri
mesh_terms: D001783:Blood Flow Velocity / Q000502:physiology; D001794:Blood Pressure / Q000502:physiology; D011211:Electric Power Supplies; D055590:Electromagnetic Phenomena / Q000295:instrumentation; D006350:Heart Valve Prosthesis; D006354:Heart, Artificial; D006353:Heart-Assist Devices; D006801:Humans; D011474:Prosthesis Design