Bioabsorbable Textile for Joint Function Restoration
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Solution Overview
Problem
Current surgical devices for repairing rotator cuff tears lack effective mechanical and biological augmentation, leading to high re-tear rates and inadequate tissue healing.
Innovation Solution
A bioabsorbable textile comprising polymeric yarns with a hyaluronic acid derivative, specifically a benzyl ester, that provides both mechanical reinforcement and biological augmentation by mimicking native joint tissue architecture and promoting host cell-mediated healing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If synthetic augmentation devices are used, then mechanical strength is improved, but degradation time is excessive (>2 years) and tissue integration is poor
Solution Approach 1:
The patent modifies the chemical structure of hyaluronic acid by creating derivatives with controlled degradation rates. Specifically, it uses hyaluronic acid with modified molecular weight, degree of acetylation, and viscosity to achieve optimal balance between mechanical strength and degradation time. The parameters are adjusted to ensure the scaffold maintains strength during healing while degrading within an appropriate timeframe.
Solution Approach 2:
The invention creates composite hydrogel structures combining hyaluronic acid derivatives with crosslinking agents and reinforcing components. The composite material integrates natural polymer benefits (biocompatibility, degradation) with enhanced mechanical properties through controlled crosslinking density and network architecture, resolving the contradiction between strength and degradation.
2Adaptability or versatility
If biological devices (allografts or xenografts) are used, then tissue integration is improved, but immune reaction and disease transmission risk increase
Solution Approach 1:
The patent creates synthetic hyaluronic acid-based scaffolds that copy the natural extracellular matrix structure and composition without using actual biological tissue from other sources. By replicating the biochemical and biomechanical properties of native tissue through controlled polymer synthesis and hydrogel formation, the invention achieves tissue integration benefits while eliminating immune rejection and disease transmission risks associated with allografts and xenografts.
Solution Approach 2:
The invention uses fully synthetic, biocompatible hyaluronic acid derivatives that are designed to be temporarily present during healing and then safely degraded. These disposable-like synthetic scaffolds eliminate the need for donor tissue and associated biological risks, providing a safe, controllable alternative that integrates with tissue during the critical healing period.
3Strength
If mechanical reinforcement is provided, then re-tear resistance is improved, but biological healing support is reduced
Solution Approach 1:
The patent designs hyaluronic acid-based scaffolds that simultaneously provide mechanical reinforcement and biological healing support through multiple integrated functions. The hydrogel structure offers mechanical strength via crosslinked network while also providing biochemical cues, porosity for cell infiltration, and degradation products that stimulate tissue regeneration. This multi-functional design resolves the contradiction by making a single material system capable of both structural and biological roles.
Solution Approach 2:
The invention creates regions with different properties within the scaffold: denser crosslinked regions for mechanical strength and more porous regions for cell infiltration and nutrient transport. The local quality varies spatially to provide appropriate mechanical support where needed while facilitating biological healing in other regions, resolving the contradiction between reinforcement and healing support.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The bioabsorbable textile effectively augments the mechanical properties of the lesion site, supports tissue regeneration, and integrates with host joint tissue, reducing re-tear rates and improving joint function restoration.
Implementation Method 1
A bioabsorbable textile comprising polymeric yarns, wherein at least one of said polymeric yarns comprises a hyaluronic acid derivative
Implementation Method 2
provides both mechanical reinforcement and biological augmentation by mimicking native joint tissue architecture and promoting host cell-mediated healing
Data Source
AI summary
A bioabsorbable textile for the restoration of the joint function whereas the joint is affected by partial thickness tears, small to medium full-thickness tears, large to massive full-thickness tears, acute and chronic/degenerative tears. The bioabsorbable textile may comprise polymeric yarns interconnected to form a weave or knitted configuration, wherein said bioabsorbable textile provides a combined mechanical and biological augmentation in the target joint tissue. The bioabsorbable textile may be implanted in combination with fixation tools during open, mini-open or arthroscopic repair/augmentation procedures of joint tissue tears.