A Magnetically Levitated Left-Ventricular Assist Device

Professor Brad Paden

Dept. of Mechanical and Environmental Engineering

University of California, Santa Barbara

The StreamLiner mag-lev left-ventricular assist devices (LVADs), HG3b and HG3c have successfully been implanted in calves. The first was implanted for 4 hours on July 10, 1998 and the second for 34 days on August 24, 1999 respectively. The tests confirmed the feasibility of low power levitation (1.5 watts coil power) and very low blood damage in mag-lev ventricular assist devices. This talk describes the unique geometry of this pump and the control system design process. Key features of this LVAD concept are the passive radial suspension and active voice-coil thrust bearing. Collaborators are James Antaki, Director of Artificial Heart Research, and Greg Burgreen, both from the University of Pittsburgh, McGowan Center for Artificial Organs, and Nelson Groom, NASA Langley Research Center.

 

Friday, September 22, 2000

3:30 - 5:00 p.m.

1500 EECS