title: Development of rotary blood pump technology: past, present, and future.
abstract: Even though clinical acceptance of a nonpulsatile blood flow was demonstrated almost 45 years ago, the development of a nonpulsatile blood pump was completely ignored until 20 years ago. In 1979, the first author's group demonstrated that completely pulseless animals did not exhibit any abnormal physiology if 20% higher blood flows were provided to them. However, during the next 10 years (1979-1988), minimum efforts were provided for the development of a nonpulsatile, permanently implantable cardiac prosthesis. In 1989, the first author and his team at Baylor College of Medicine initiated a developmental strategy of various types of nonpulsatile rotary blood pumps, including a 2-day rotary blood pump for cardiopulmonary bypass application, a 2 week pump for ECMO and short-term circulatory assistance, a 2 year pump as a bridge to transplantation, and a permanently implantable cardiac prosthesis. Following the design and developmental strategy established in 1989, successful development of a 2-day pump (the Nikkiso-Fairway cardiopulmonary bypass pump) in 4 years (1989-1993), a 2 week pump (Kyocera gyro G1E3 pump) in 6 years (1992-1998), and a bridge to transplant pump (DeBakey LVAD-an axial flow blood pump) in 10 years (1988-1998) was made. Currently, a permanently implantable centrifugal blood pump development program is successfully completing its initial Phase 1 program of 5 years (1995-2000). Implantation exceeded 9 months without any negative findings. An additional 5 year Phase II program (2000-2005) is expected to complete such a device that will be clinically available.
authors.affiliation: Department of Surgery, Baylor College of Medicine, Houston, Texas 77040, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Nosé
authors.forename: M
authors.initials: M
authors.lastname: Yoshikawa
authors.forename: S
authors.initials: S
authors.lastname: Murabayashi
authors.forename: T
authors.initials: T
authors.lastname: Takano
mesh_terms: D006348:Cardiac Surgical Procedures / Q000266:history*; D004867:Equipment Design; D006353:Heart-Assist Devices / Q000266:history*; D049673:History, 20th Century; D012399:Rotation; D014481:United States