1. Development of an Implantable Ventricular Assist System
Michael P Macris, MD, Steven M Parnis, O.H Frazier, MD, John M Fuqua, Robert K Jarvik, MD 
The Annals of Thoracic Surgery 
Volume 63, Issue 2, Pages (February 1997)
DOI: /S (96)01226-X

2. Fig. 1 Jarvik 2000 axial-flow blood pump.
The Annals of Thoracic Surgery  , DOI: ( /S (96)01226-X)

3. Fig. 2
In vitro flow/pressure curves with the Jarvik 2000 blood pump. The pump was tested in a 3.3 centistoke glycerol/water mixture under steady-state flow conditions. The pump achieved speeds as high as 13,000 rpm, which can generate more than 11 L/min. (AoP = aortic pressure; LVP = left ventricular pressure.)
The Annals of Thoracic Surgery  , DOI: ( /S (96)01226-X)

4. Fig. 3
Jarvik 2000 axial-flow blood pump in place within the left ventricular apex.
The Annals of Thoracic Surgery  , DOI: ( /S (96)01226-X)

5. Fig. 4
Power and speed remained constant during a 5-month study in calf 4.
The Annals of Thoracic Surgery  , DOI: ( /S (96)01226-X)

6. Fig. 5
Minimum and maximum current levels in calf 4. The change in amperage occurs as the torque load in the motor varies with the pulse pressure caused by ventricular contraction.
The Annals of Thoracic Surgery  , DOI: ( /S (96)01226-X)