Title :
Determination of the mechanical losses of the Penn State electrical ventricular assist device
Author :
Tsui, Christopher W. ; Tsach, Uri ; Geselowitz, David B.
Author_Institution :
Pennsylvania State Univ., University Park, PA, USA
Abstract :
The Penn State electric ventricular assist device (EVAD) consists of a brushless DC electric motor, rollerscrew, pusher plate, pump chamber, and valves. The authors analyze the mechanical linkage of the EVAD and quantify the dissipated energy of the rollerscrew and the supporting bearings. Their analysis sheds further light on the physical phenomenon undertaken in transforming the rotary motion of the armature into a linear motion of the pusher plate. Understanding this phenomenon enables them to construct a better mathematical model of the device, which can be used for identifying the possible modifications that will increase the efficiency of future EVAD designs
Keywords :
artificial organs; cardiology; losses; Penn State electrical ventricular assist device; bearings; brushless DC electric motor; dissipated energy; mathematical model; mechanical linkage; mechanical losses; pump chamber; pusher plate; rollerscrew; valves; Blood pressure; Bonding; DC motors; Fasteners; Friction; Mathematical model; Motion analysis; Position measurement; Spinning; Torque;
Conference_Titel :
Bioengineering Conference, 1989., Proceedings of the 1989 Fifteenth Annual Northeast
Conference_Location :
Boston, MA
DOI :
10.1109/NEBC.1989.36701
