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Related Experiment Videos

Experiences with a sac-type artificial heart.

D T Morris, C M Couves

    Canadian Medical Association Journal
    |September 4, 1971
    PubMed
    Summary
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    This study introduces a total replacement artificial heart with in vitro performance meeting human needs. In vivo tests show adequate blood flow, but highlight challenges with air embolism and red blood cell damage requiring further development.

    Area of Science:

    • Biomedical Engineering
    • Cardiovascular Research
    • Medical Device Development

    Background:

    • The limitations of current treatments for end-stage heart failure necessitate advanced solutions.
    • Total artificial hearts (TAHs) offer a potential alternative to heart transplantation.
    • Developing a TAH with sustained in vivo functionality remains a significant challenge.

    Purpose of the Study:

    • To describe the design and initial in vitro and in vivo performance of a total replacement artificial heart.
    • To assess the feasibility of implanting the artificial heart in experimental animals.
    • To identify preliminary challenges and areas for improvement in the TAH system.

    Main Methods:

    • In vitro testing to evaluate performance against human physiological requirements.

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  • Surgical implantation of the TAH into experimental animal models.
  • In vivo monitoring of hemodynamic parameters (blood flow and pressure) for up to six hours.
  • Preliminary analysis of biocompatibility issues, including air embolism and hemolysis.

    • Main Results:

    • The artificial heart demonstrated in vitro performance suitable for moderate activity levels.
    • Successful in vivo implantation and adequate blood flow and pressure provision were achieved in experimental animals for up to six hours.
    • Preliminary testing identified significant issues with air embolism and red blood cell hemolysis.

    Conclusions:

    • The developed total replacement artificial heart shows promise for supporting physiological needs.
    • Further design modifications and implantation technique refinements are necessary to address identified biocompatibility issues.
    • Larger animal studies are required for comprehensive evaluation of the TAH's long-term potential and safety.