title: The PediPump: a versatile, implantable pediatric ventricular assist device--update IV.
abstract: Cleveland Clinic's PediPump (Cleveland, OH, USA) is a ventricular assist device designed for the support of pediatric patients. The PediPump is a mixed-flow ventricular assist device with a magnetically suspended impeller measuring 10.5 mm in diameter by 64.5 mm in length. Progress and achievements for the PediPump program are considered according to the development project's three primary objectives: Basic engineering: along with size reductions, substantial design improvements have been incorporated in each design iteration including the motor, magnetic bearings, axial touch points, and heat transfer path; Anatomic modeling and device fitting studies: Techniques based on computed tomography and magnetic resonance imaging have been developed to create three-dimensional anatomic-modeling and device-fitting tools to facilitate device implantation and to assist in preoperative planning. For in vivo testing, to date, six acute (6-h duration) and nine chronic (30-day target duration) implantations have been performed in sheep; the implantation of the PediPump appears to be relatively easy with excellent hemodynamic performance and minimal hemolysis during support. Cleveland Clinic's PediPump program supported by the National Heart, Lung and Blood Institute's Pediatric Circulatory Support Program has led to the development of a pediatric ventricular assist device that has satisfactory performance in preclinical evaluation and appears to be ready to support a program of clinical testing.
authors.affiliation: The Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA. duncanb@ccf.org
authors.forename: Brian W
authors.initials: BW
authors.lastname: Duncan
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Fukamachi
authors.forename: Lawrence D
authors.initials: LD
authors.lastname: Noble
authors.forename: David T
authors.initials: DT
authors.lastname: Dudzinski
authors.forename: Christine R
authors.initials: CR
authors.lastname: Flick
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Fumoto
authors.forename: Akira
authors.initials: A
authors.lastname: Shiose
authors.forename: Yoko
authors.initials: Y
authors.lastname: Arakawa
authors.forename: Tohru
authors.initials: T
authors.lastname: Takaseya
authors.forename: Fernando
authors.initials: F
authors.lastname: Casas
authors.forename: William A
authors.initials: WA
authors.lastname: Smith
mesh_terms: D000818:Animals; D019918:Heart Valve Prosthesis Implantation; D006353:Heart-Assist Devices; D006439:Hemodynamics; D006461:Hemolysis; D006801:Humans; D007223:Infant; D010372:Pediatrics / Q000295:instrumentation; D011474:Prosthesis Design; D012756:Sheep