Composite scaffold for the repair, reconstruction, and regeneration of soft tissues
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Solution Overview
Problem
Current scaffolds for soft tissue repair and reconstruction lack optimal porosity, surface area, and mechanical properties necessary for effective cellular ingrowth and tissue regeneration, often causing inflammation and inadequate healing due to insufficient void volume and collapse under mechanical loading.
Innovation Solution
A composite scaffold with a support structure and a porous material or hydrogel, providing mechanical reinforcement, adequate extracellular matrix deposition space, and a high surface area for cellular proliferation, while maintaining shape under tension, and being bioabsorbable to support healing and tissue regeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mesh-like scaffolds are used to provide mechanical support, then mechanical strength is improved, but porosity and void volume are insufficient for tissue regeneration
Solution Approach 1:
The patent employs a nested structure where a three-dimensional support matrix (outer layer) contains and supports an inner biologic matrix or hydrogel. This nested configuration allows the outer structural framework to provide mechanical strength while the inner porous material provides adequate void volume and surface area for cellular infiltration and tissue regeneration, resolving the contradiction between mechanical support and regenerative capacity.
2Volume of stationary object
If biologic scaffolds are processed to increase porosity for tissue ingrowth, then porosity is improved, but mechanical strength and resistance to collapse deteriorate
Solution Approach 1:
The patent creates a composite scaffold system combining two distinct materials with complementary properties: a three-dimensional support matrix providing mechanical strength and structural integrity, and an inner biologic matrix or hydrogel providing high porosity and biocompatibility. This composite approach allows each material to fulfill its optimal function without compromising the other, achieving both high porosity and adequate mechanical strength simultaneously.
3Volume of stationary object
If fibers are spaced apart to create void volume for tissue regeneration, then void volume is improved, but surface area for cell ingrowth is reduced
Solution Approach 1:
The patent applies local quality by creating different structural characteristics in different regions of the scaffold. The three-dimensional support matrix provides a framework with specific geometric features that offer both surface area for cell attachment and defined void spaces for tissue ingrowth. The inner biologic matrix or hydrogel fills these void spaces with additional porosity, creating a gradient of properties that simultaneously provides adequate void volume and extensive surface area for cellular functions.
Data Source
AI summary
A composite scaffold having a highly porous interior with increased surface area and void volume is surrounded by a flexible support structure that substantially maintains its three-dimensional shape under tension and provides mechanical reinforcement during repair or reconstruction of soft tissue while simultaneously facilitating regeneration of functional tissue.