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Related Experiment Videos

Modulation of mechanical properties in multiple-component tissue adhesives.

D H Sierra1, K O'Grady, D M Toriumi

  • 1Department of Biomedical Engineering, School of Engineering, Hoehn 370, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA.

Journal of Biomedical Materials Research
|September 28, 2000
PubMed
Summary
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Thorough mixing of two-component tissue adhesives improves mechanical properties and bonding strength. While applicator type impacts mixing, improved hemostasis in vivo was observed with better-mixed sealants.

Area of Science:

  • Biomaterials Science
  • Surgical Adhesives
  • Tissue Engineering

Background:

  • Two-component tissue adhesives are crucial in surgery.
  • Optimizing adhesive performance is essential for clinical success.
  • Mixing efficiency can significantly influence adhesive properties.

Purpose of the Study:

  • To investigate the impact of mixing on the mechanical properties of a two-component tissue adhesive.
  • To correlate mixing efficiency with adhesive performance in various application models.
  • To evaluate the influence of mixing on in vivo hemostasis and sealant usage.

Main Methods:

  • In vitro stereological analysis to assess mixing variations among different applicators.
  • Ex vivo tensile testing to determine adhesive strength correlated with mixing.

Related Experiment Videos

  • In vivo studies including dermal incisional closure and a rabbit spleen incision model for hemostasis assessment.

    • Main Results:

    • Mixing efficiency varied significantly based on the applicator type.
    • Higher adhesive strength was observed with more thorough mixing ex vivo.
    • Improved in vivo hemostasis and reduced sealant usage were associated with better-mixed adhesives.
    • No significant difference in in vivo dermal incisional closure strength was found across applicator types.

    Conclusions:

    • Mixing completeness is a critical factor influencing the mechanical performance of two-component tissue adhesives.
    • While ex vivo strength and in vivo hemostasis show correlation with mixing, in vivo closure strength is less dependent on mixing alone.
    • Applicator design and sealant formulation interact to determine the overall effectiveness of tissue adhesives in clinical applications.