In Vivo Testing of a Roller-Screw Type Electric Total Artificial Heart

  • G. Rosenberg
  • W. S. Pierce
  • A. J. Snyder
  • W. Weiss
  • D. L. Landis
  • W. E. PaeJr.
  • J. A. Magovern


Work was begun on the development of an electric motor drive total artificial heart at the Pennsylvania State University in 1978. The first systems developed utilized a low-speed high-torque brushless DC motor rotating a triple-track cam mechanism. This mechanism translated a rotary force into a rectilinear motion to actuate alternately the sac type blood pumps located on either end of the motor drive mechanism. The prototype of this system weighed slightly over 1 kg. Implantation of the cam type electric motor driven artificial heart began in 1983 and 222-day calf survival was obtained late in that year [1]. In 1984, work was begun on a roller-screw type electric motor driven artificial heart. The roller-screw device had the advantages of being smaller, lighter, and less expensive to produce. Extensive in vitro testing of the roller-screw device was performed from 1984 through 1986. In mid-1986 implantation of the roller-screw device was begun in calves. Over the next year the device was implanted in six animals with a maximum survival time of greater than 85 days.


Blood Pump Artificial Heart Battery Pack Secondary Coil Total Artificial Heart 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • G. Rosenberg
  • W. S. Pierce
  • A. J. Snyder
  • W. Weiss
  • D. L. Landis
  • W. E. PaeJr.
  • J. A. Magovern

There are no affiliations available

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