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Related Experiment Videos

Development and evaluation of the vibrating electromagnetically-driven artificial heart.

S Nitta1, T Yambe, Y Katahira

  • 1Department of Medical Engineering and Cardiology, Tohoku University, Sendai, Japan.

The Science Reports of the Research Institutes, Tohoku University. Ser. C, Medicine. Tohoku Daigaku
|July 1, 1991
PubMed
Summary

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A new vibrating electromagnetic (VEM) artificial heart pump was developed. This VEM pump demonstrated acceptable performance in mock circulation and animal studies, proving its utility for total artificial heart applications.

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Devices
  • Medical Technology

Background:

  • Artificial heart development is crucial for end-stage heart failure treatment.
  • Existing devices face challenges in long-term reliability and biocompatibility.
  • Novel pumping mechanisms are needed for improved artificial heart function.

Purpose of the Study:

  • To develop and evaluate a novel vibrating electromagnetic (VEM) univalved artificial heart.
  • To assess the fluid mechanical, hematological, and hemodynamical properties of the VEM pump.
  • To determine the VEM pump's suitability for totally implantable artificial heart applications.

Main Methods:

  • Development of a univalved, electromagnetically driven artificial heart.
  • Evaluation in mock circulation and animal experiments using adult goats.

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  • Analysis of flow patterns, pressure characteristics, and hematological parameters (free hemoglobin).

    • Main Results:

    • The VEM pump achieved a flow rate exceeding 10 L/min at 10 Hz vibration.
    • Two distinct flow and pressure patterns were observed: constant peak and periodical peak.
    • Free hemoglobin levels remained within acceptable physiological ranges, indicating good hemocompatibility.

    Conclusions:

    • The novel vibrating electromagnetic (VEM) pump shows promising performance for artificial heart applications.
    • The VEM pump's ability to generate significant flow and maintain hemocompatibility supports its potential for total implantation.
    • This technology represents a viable option for developing next-generation totally implantable artificial hearts.