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

G E Miller1, M Madigan, R Fink

  • 1Bioengineering Program, Texas A&M University, College Station 77843, USA.

Artificial Organs
|July 1, 1995
PubMed
Summary
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This study analyzed flow patterns in a multiple disk centrifugal pump, finding they matched theoretical predictions for use as a ventricular assist device. The pump demonstrated efficient radial flow propulsion via shear and centrifugal forces.

Area of Science:

  • Biomedical Engineering
  • Fluid Dynamics
  • Medical Devices

Background:

  • Ventricular assist devices (VADs) are crucial for managing heart failure.
  • Centrifugal pumps offer potential for VAD applications due to their design.
  • Understanding internal flow dynamics is key to optimizing pump performance.

Purpose of the Study:

  • To analyze flow patterns within a multiple disk centrifugal pump.
  • To evaluate the pump's suitability for ventricular assist or bridge-to-transplant applications.
  • To validate flow patterns against theoretical predictions.

Main Methods:

  • Utilized a mock circulatory system with defined hemodynamic components.
  • Employed a glycerin/water solution as a blood analog.

Related Experiment Videos

  • Performed flow visualization using laser, particles, and photographic techniques.

    • Main Results:

    • Observed flow patterns closely aligned with theoretical models.
    • Inlet flow demonstrated radial outward spread through disk annular spaces.
    • Flow propulsion was effectively driven by combined shear and centrifugal forces.

    Conclusions:

    • The multiple disk centrifugal pump exhibits predictable flow characteristics.
    • These flow patterns support its potential integration as a ventricular assist device.
    • The pump's operational principles are validated by experimental findings.