Polyester-Hyaluronic Acid Matrix for Osteochondral Repair
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Solution Overview
Problem
Current biocompatible matrices for tissue repair, such as bone and cartilage, often have poor physical handling and resorption characteristics, limiting their effectiveness and clinical use.
Innovation Solution
Development of biodegradable matrices comprising a polyester entangled with a polysaccharide, which may include growth factors and collagen, to support tissue growth and repair, with methods involving entanglement and cross-linking of polymers to maintain structural integrity and promote cellular growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biocompatible matrices are used for tissue repair, then tissue growth support is improved, but physical handling characteristics deteriorate
Solution Approach 1:
The patent combines polyester polymers and hyaluronic polymers to create a composite matrix that integrates the structural support properties of polyester with the biocompatibility and tissue regeneration properties of hyaluronic acid, resolving the contradiction between physical handling and tissue growth support
2Reliability
If biocompatible matrices are used for tissue repair, then tissue growth support is improved, but resorption characteristics deteriorate
Solution Approach 1:
The composite structure of polyester and hyaluronic polymers provides controlled resorption characteristics, where the polyester component provides structural integrity over time while the hyaluronic component facilitates tissue integration and regulated degradation, resolving the contradiction between tissue growth support and resorption characteristics
3Strength
If polymer matrices are made more durable, then structural integrity is improved, but biodegradability deteriorates
Solution Approach 1:
The patent utilizes the inherent biodegradability parameters of selected polyester and hyaluronic polymers to achieve a balance where the matrix maintains structural integrity during the tissue regeneration period and then degrades safely, resolving the contradiction between structural integrity and biodegradability
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 matrices effectively support tissue repair by maintaining structural integrity, promoting cellular growth, and inducing tissue regeneration, as demonstrated by successful bone and cartilage repair in animal models, with significant replacement of implanted material by newly formed tissue.
Implementation Method 1
a polyester entangled with a polysaccharide
Implementation Method 2
which can be a cross-linked polysaccharide
Data Source
AI summary
The present application discloses matrix compositions to support the repair of tissue defects such as an osteochondral injury. A matrix described herein comprises a polyester polymer entangled with a polysaccharide polymer. Also disclosed are methods of preparing a matrix, and methods of using a matrix in the repair of tissue. In certain configurations, a matrix can comprise a polyester cross-linked with a polysaccharide, which can be an oxidized polysaccharide. In some configurations, a matrix can further comprise one or more additional components, such as a growth factor.