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A Tri-Leaflet Nitinol Mesh Scaffold for Engineering Heart Valves.

S Hamed Alavi1,2, Marc Soriano Baliarda3, Noemi Bonessio3

  • 1The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California, Irvine, 2400 Engineering Hall, Irvine, CA, 92697-2730, USA.

Annals of Biomedical Engineering
|December 24, 2016
PubMed
Summary

Non-degradable nitinol mesh scaffolds may improve tissue engineered heart valve durability, preventing deterioration and regurgitation. This study optimizes scaffold design for enhanced mechanical properties and function before implantation.

Keywords:
Computational modelingHeart valveHybrid heart valveHybrid tissue engineering approachNitinol meshNon-degradableScaffold

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Research
  • Materials Science

Background:

  • Valvular heart disease epidemiology is shifting due to aging populations.
  • Current heart valve replacements (mechanical, bioprosthetic) have limitations.
  • Tissue engineered heart valves face challenges like scaffold degradation and valve failure.

Purpose of the Study:

  • To investigate the potential of non-degradable superelastic nitinol mesh scaffolds for heart valve tissue engineering.
  • To enhance the durability and prevent deterioration of engineered heart valves.
  • To optimize scaffold design features for improved mechanical characteristics and function.

Main Methods:

  • Development of a non-degradable superelastic nitinol mesh scaffold concept.
  • Analysis of design features influencing the scaffold's mechanical properties.
  • Pre-clinical evaluation of mechanical characteristics for optimal function.

Main Results:

  • Hypothesized that non-degradable nitinol mesh scaffolds can increase engineered heart valve durability.
  • The proposed scaffold design aims to prevent valve shrinkage and subsequent regurgitation.
  • Current work focuses on design optimization for mechanical performance.

Conclusions:

  • Non-degradable nitinol mesh scaffolds show promise for overcoming limitations in tissue engineered heart valve technology.
  • Optimizing scaffold design is crucial for achieving functional and durable engineered heart valves.
  • Further research into nitinol mesh scaffolds could lead to improved heart valve replacement options.