title: The E4T electric powered total artificial heart (TAH).
abstract: The E4T is a totally implantable total artificial heart (TAH) resulting from many years of research work at the Cleveland Clinic Foundation (CCF) and Nimbus, Inc. It consists of four implanted subsystems: the pumping unit, the variable volume device, the transcutaneous transformer, and the internal battery. The pumping unit consists of two CCF biolized pusher plate pumps, and a Nimbus electrohydraulic energy converter. The control logic is based on a left master, alternating beating scheme. The timing difference between end right eject and end left fill determines the actuator speed adjustment. The pumps free fill, so left-right flow differences are easily accommodated. A prototype system has been built and begun testing to validate and refine the design details.
authors.affiliation: Cleveland Clinic Foundation, Ohio 44106.
authors.forename: W A
authors.initials: WA
authors.lastname: Smith
authors.forename: B F
authors.initials: BF
authors.lastname: Hete
authors.forename: R J
authors.initials: RJ
authors.lastname: Kiraly
authors.forename: L K
authors.initials: LK
authors.lastname: Fujimoto
authors.forename: G B
authors.initials: GB
authors.lastname: Jacobs
authors.forename: M
authors.initials: M
authors.lastname: Ishikawa
authors.forename: K
authors.initials: K
authors.lastname: Butler
authors.forename: Y
authors.initials: Y
authors.lastname: Nosé
mesh_terms: D011211:Electric Power Supplies; D004867:Equipment Design; D006354:Heart, Artificial; D006801:Humans