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Related Experiment Videos

A ferrofluidic actuator for an implantable artificial heart.

Y Mitamura1, T Wada, K Sakai

  • 1School of Engineering, Hokkaido Tokai University, Sapporo, Japan.

Artificial Organs
|October 1, 1992
PubMed
Summary

A ferrofluidic actuator shows promise for artificial hearts. This device uses magnetic fields to move magnetic fluids, generating significant pressure for potential implantation.

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Area of Science:

  • Biomedical Engineering
  • Fluid Dynamics
  • Materials Science

Background:

  • Artificial heart technology requires efficient and reliable pumping mechanisms.
  • Existing artificial heart actuators often involve complex mechanical components and bearings.
  • Ferrofluidic actuators offer a novel approach using magnetic fields to directly manipulate fluids.

Purpose of the Study:

  • To investigate the feasibility of a ferrofluidic actuator for artificial heart applications.
  • To determine the pressure generation capabilities of a ferrofluidic actuator.
  • To assess the potential of this technology for implantable devices.

Main Methods:

  • A ferrofluidic actuator was designed using a U-shaped glass cylinder and a solenoid.
  • Magnetic flux was applied to displace ferrofluid and generate pressure.
  • Sequential activation of a three-pole solenoid array was tested for enhanced performance.

Main Results:

  • A magnetic flux of 0.32 T generated a pressure of 7.58 kPa (57 mm Hg).
  • Sequential solenoid activation achieved pressures of 9.98 kPa (75 mm Hg) and -1.33 kPa (-10 mm Hg).
  • Calculations suggest 0.49 T magnetic flux could yield 13.3 kPa (100 mm Hg).

Conclusions:

  • Ferrofluidic actuators can generate physiologically relevant pressures.
  • The absence of bearings simplifies the design and potentially increases reliability.
  • Ferrofluidic actuators are a promising technology for developing next-generation implantable artificial hearts.

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