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PubMed · 8572973

A preliminary flow visualization study in a multiple disk centrifugal artificial ventricle.

G E Miller·M Madigan·R Fink
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Abstract

Flow patterns in a multiple disk centrifugal pump were analyzed so that the device could be incorporated as a ventricular assist or a bridge-to-transplant device. The pump operates either in pulsatile or steady flow modes with the ability to change modes within a fraction of a second. The pump was tested on a mock circulatory system consisting of an arterial fluid capacitor, a systemic resistor, and a venous capacitor. Arterial volume flow rate, arterial pressure, inlet (venous) pressure, and pump rotation speed are continually monitored. A glycerin/water solution is used as a blood analog. Flow visualization was performed with a 3 mW yellow laser, sheet lens, neutrally buoyant amberlite particles, and both still and motion picture photography. Flow patterns matched theoretical predictions very well; inlet flow spread radially outward through the disk annular spaces while propelled by shear and centrifugal forces.

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Blood CellsBlood Flow VelocityBlood PressureEquipment DesignHeart, ArtificialHeart-Assist DevicesLasersMicrospheresPulsatile FlowRotationStress, MechanicalVideotape RecordingJournal Article

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G E Miller, M Madigan, R Fink. 1995. A preliminary flow visualization study in a multiple disk centrifugal artificial ventricle.. https://doi.org/10.1111/j.1525-1594.1995.tb02402.x

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