title: Permanent circulatory support systems at the Pennsylvania State University.
abstract: Permanent circulatory support systems are required for patients in whom myocardial damage is irreversible and cardiac transplantation is not possible. Two systems are described which provide long term circulatory support: the left ventricular assist system and the total artificial heart. These systems are based on the design of a pusher plate actuated blood pump, driven by a small brushless dc electric motor and rollerscrew driver. An implantable motor controller maintains suitable physiologic flow rates for both systems and controls left-right balance in the total artificial heart. Other parts of the system include an intra-thoracic compliance chamber, transcutaneous energy and data transmission system, and internal and external batteries.
authors.affiliation: Department of Surgery, Milton S. Hershey Medical Center, Pennsylvania State University, Hershey 17033.
authors.forename: W J
authors.initials: WJ
authors.lastname: Weiss
authors.forename: G
authors.initials: G
authors.lastname: Rosenberg
authors.forename: A J
authors.initials: AJ
authors.lastname: Snyder
authors.forename: T J
authors.initials: TJ
authors.lastname: Cleary
authors.forename: R P
authors.initials: RP
authors.lastname: Gaumond
authors.forename: D B
authors.initials: DB
authors.lastname: Geselowitz
authors.forename: W S
authors.initials: WS
authors.lastname: Pierce
mesh_terms: D000818:Animals; D002417:Cattle; D004867:Equipment Design; D004868:Equipment Failure; D006354:Heart, Artificial; D006353:Heart-Assist Devices; D006801:Humans