What question did this study set out to answer?

To present and evaluate an implantable centrifugal blood pump utilizing hydrodynamic forces to suspend the impeller without mechanical bearings or seals.

June 1, 2000Artificial Organs

VentrAssist Hydrodynamically Suspended, Open, Centrifugal Blood Pump

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Authors

PWP.A. WattersonBostwick Laboratories JWJohn C. WoodardNew South Wales Department of Primary Industries VRV.S. RamsdenUniversity of Technology Sydney

Discussion

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Implication

Benchtop evaluation demonstrates low hemolysis and nineteen percent efficiency in a shaftless blood pump, suggesting improved biocompatibility for mechanical circulatory support.

Key Points

To present and evaluate an implantable centrifugal blood pump utilizing hydrodynamic forces to suspend the impeller without mechanical bearings or seals.
Designed an open centrifugal pump featuring thick blades with tapered edges that use hydrodynamic forces to suspend the impeller, removing shafts, seals, and spiders.
Assessed flow characteristics, hemolysis, and system efficiency under bench testing conditions at 5 L/min and 100 mm Hg differential pressure.
Measured hemolysis was low, ranging from NIH 0.002 to 0.005 g/100 L at 5 L/min and 100 mm Hg differential pressure.
System efficiency reached 19% during target operating conditions, with fluid analysis confirming clean flow lines free of stagnant zones.

Cite This Study

Watterson et al. (2000) studied this question.

synapsesocial.com/papers/6a918cddca59a4cbdea16f70 https://doi.org/10.1046/j.1525-1594.2000.06606.x

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Implication

Benchtop evaluation demonstrates low hemolysis and nineteen percent efficiency in a shaftless blood pump, suggesting improved biocompatibility for mechanical circulatory support.

VentrAssist Hydrodynamically Suspended, Open, Centrifugal Blood Pump

Discussion

Member takes

Implication

Key Points

Cite This Study

VentrAssist Hydrodynamically Suspended, Open, Centrifugal Blood Pump

Discussion

Member takes

Implication

Key Points

Cite This Study

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