ECM Fiber-Woven Substrates for Native Tissue Load Support
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Solution Overview
Problem
Existing tissue engineering approaches using isotropic scaffolds fail to provide the complex multidirectional and nonlinear properties necessary for sustained load support in vivo, and traditional textile reinforced composites require multiple layers to achieve desired geometries.
Innovation Solution
Engineered materials based on structural protein components of extracellular matrix, such as collagen and elastin fibers, are mapped and woven using multimodal imaging and weaving algorithms to replicate the intrinsic architecture of biological tissues, allowing for anisotropic, inhomogeneous, and viscoelastic textiles that mimic native tissue properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional textile reinforced composites use 2-D woven fabrics with perpendicular yarn interlocking, then the fabric structure is simple to manufacture, but the fiber strength is significantly reduced and reinforcement properties are compromised
Solution Approach 1:
The patent transitions from traditional 2-D woven fabrics to 3-D woven fabrics where yarns interlace in three dimensions rather than just perpendicular planes. This dimensional change allows fibers to maintain their strength while providing complex multidirectional reinforcement properties necessary for sustained load support in tissue engineering applications.
2Ease of manufacture
If traditional tissue engineering approaches use highly porous isotropic meshes or hydrogels, then the scaffold structure is easy to fabricate, but the complex multidirectional and nonlinear properties necessary for sustained load support cannot be provided
Solution Approach 1:
The patent employs composite material structures by combining multiple yarns with different mechanical properties (stiff, compliant, elastic) in a 3-D woven architecture. This composite approach replicates the complex multidirectional and nonlinear properties of native extracellular matrix while maintaining manufacturability through systematic weaving patterns.
3Shape
If composite parts require substantial thickness or complex shapes, then the desired geometry can be achieved, but multiple layers of fabric and/or fabrics must be cut and sewn increasing manufacturing complexity
Solution Approach 1:
By utilizing 3-D weaving technology, the patent can directly fabricate complex three-dimensional geometries and substantial thicknesses in a single integrated process, eliminating the need for multiple 2-D fabric layers that require cutting, sewing, and assembly. The 3-D weaving process inherently creates the desired complex shapes and thicknesses through controlled yarn placement in three dimensions.
Data Source
AI summary
A method of forming a substrate includes mapping a three dimensional spatial distribution of at least one structural protein fiber of extracellular matrix of biological material of interest, designing a fiber assembly pattern based on an intrinsic pattern of the at least one structural protein fiber of the extracellular matrix of the biological material, and assembling fibers based on the fiber assembly pattern to form the substrate.