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Surface processes in artificial organs. An overview

R Thull

    Medical Progress Through Technology
    |January 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    The interaction between artificial organs and the body involves surface reactions that limit device lifespan. Understanding these body-surface interactions is key to improving the longevity of artificial organs.

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    Area of Science:

    • Biomaterials Science
    • Medical Device Engineering
    • Surface Chemistry

    Background:

    • Artificial organs interface with the biological environment through their surfaces.
    • Material surface properties change over time due to biological interactions.
    • Bidirectional reactions occur between the artificial organ surface and the body.

    Purpose of the Study:

    • To identify key body-surface interactions affecting artificial organ longevity.
    • To understand the mechanisms limiting the functional lifetime of artificial organs.
    • To explore factors influencing the strength of these interactions.

    Main Methods:

    • Analysis of surface irregularities and chemical gradients.
    • Identification of nucleation and destruction propagation points.

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  • Review of common body-surface interaction mechanisms.

    • Main Results:

    • Surface irregularities and chemical gradients promote degradation.
    • Mechanical factors can initiate or accelerate destructive mechanisms.
    • Adsorption, degradation, corrosion, calcification, fatigue, embrittlement, and wear limit artificial organ lifespan.

    Conclusions:

    • Body-surface interactions are critical determinants of artificial organ lifetime.
    • Surface characteristics and material composition play a significant role.
    • Implantation site, design, and intended function influence interaction severity.