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Using magnostrictive metal as a pump for biomedical application.

S J Phillips1, K Thorton, L Barker

  • 1Cardiac Surgery Associates, Des Moines, Iowa 50314-3005.

ASAIO Transactions
|July 1, 1991
PubMed
Summary
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A novel magnetostrictive pump using Terfenol-DTM technology offers a new method for fluid pumping, including blood. This innovative device promises smooth, continuous flow for potential use in artificial hearts and ventricular assist devices.

Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Fluid Dynamics

Background:

  • Current fluid pumps face limitations in efficiency and biocompatibility.
  • Magnetostrictive materials offer unique actuation properties for novel pump designs.

Purpose of the Study:

  • To introduce a new fluid pumping theory and device based on magnetostrictive technology.
  • To explore the potential of Terfenol-DTM for biomedical fluid transport applications.

Main Methods:

  • Development of a novel pump utilizing the magnetostrictive material Terfenol-DTM.
  • Application of periodic magnetic fields to induce controlled expansion and relaxation of the material.
  • Observation of fluid flow dynamics generated by the magnetostrictive actuation.

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Main Results:

  • Demonstration of a smooth and continuous fluid flow generated by the magnetostrictive pump.
  • Successful actuation of the Terfenol-DTM material through pulsed magnetic fields.

Conclusions:

  • The developed magnetostrictive pump shows promise for efficient and continuous fluid handling.
  • Potential applications include left ventricular assist devices and totally implantable artificial hearts.