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S Drost1, B J de Kruif2, D Newport1

  • 1Bernal Institute, School of Engineering, University of Limerick, Limerick, Ireland.

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Researchers developed a programmable pulsatile flow pump using an Arduino micro-controller for vascular access hemodynamics research. This affordable system accurately generates physiological waveforms for in-vitro studies.

Keywords:
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Area of Science:

  • Biomedical Engineering
  • Fluid Dynamics
  • Control Systems

Background:

  • Vascular access hemodynamics research requires precise control over fluid flow.
  • Existing systems for generating physiological waveforms can be complex and expensive.
  • A need exists for an accessible, programmable pulsatile flow pump.

Purpose of the Study:

  • To design and test a compact, affordable, and programmable pulsatile flow pump.
  • To generate physiological waveforms for in-vitro vascular access hemodynamics research.
  • To implement a control routine for accurate waveform generation.

Main Methods:

  • Utilized an Arduino micro-controller for system programming.
  • Incorporated a gear pump for a mean flow of 900 ml/min and peak flow of 1106 ml/min.
  • Conducted identification experiments to assess dynamic behavior.
  • Implemented a feed-forward control routine.

Main Results:

  • The system successfully generated targeted representative waveforms.
  • Achieved an error rate of less than 3.6% in waveform reproduction.
  • Demonstrated the system's capability for in-vitro hemodynamics research.

Conclusions:

  • The designed programmable pulsatile flow pump is effective for vascular access hemodynamics research.
  • The system offers an accurate and adaptable solution for generating physiological waveforms.
  • Further improvements in accuracy and user-specific adaptations are feasible.