Collagen Matrix Preparation via Single-Step Buffer Polymerization
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Solution Overview
Problem
Existing methods for preparing collagen matrices lack standardized procedures and reagents for consistent collagen self-assembly, leading to high lot-to-lot variability in functional properties, and ultraviolet radiation is believed to negatively affect collagen fibril formation.
Innovation Solution
A single mixing step method using a buffer solution with a base to polymerize collagen, combined with sterilization techniques like ultraviolet radiation, maintains collagen's polymerization capabilities and reduces variability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple mixing steps are used for collagen polymerization with separate buffer and base additions, then collagen matrix formation is achieved, but manufacturing consistency and lot-to-lot variability are compromised
Solution Approach 1:
The patent combines multiple separate mixing steps (buffer addition, base addition, collagen polymerization) into a single-step procedure using a pre-formulated buffer solution containing all necessary components. This merging of steps eliminates variability between steps and improves manufacturing consistency while reducing procedural complexity.
Solution Approach 2:
The patent optimizes specific parameters of the buffer solution including pH (7.2-7.4), ionic strength, and composition ratios to enable collagen polymerization to occur in a single mixing step. By carefully controlling these parameters, the procedure achieves both simplicity and high manufacturing precision.
2Reliability
If ultraviolet radiation is applied for sterilization of collagen compositions, then sterilization efficacy is achieved, but collagen fibril formation is believed to be negatively affected
Solution Approach 1:
The patent applies ultraviolet radiation for sterilization of collagen compositions, addressing the contradiction by demonstrating that proper control of UV dosage and timing can achieve effective sterilization while preserving collagen's ability to form fibrils. The method converts the potentially harmful UV exposure into a beneficial sterilization step that does not compromise structural integrity.
3Manufacturing precision
If standardized procedures and reagents are implemented for collagen self-assembly, then lot-to-lot variability is reduced, but procedure complexity increases
Solution Approach 1:
The patent creates a universal buffer solution formulation that can be used across different collagen batches and applications. This single standardized reagent performs multiple functions: maintaining pH, providing ionic strength, enabling polymerization, and ensuring reproducibility. The universal formulation reduces the need for batch-specific optimizations while improving consistency.
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 method produces collagen matrices with predictable and reproducible in-vitro and in-vivo responses, maintaining polymerization properties and sterilization efficacy without adverse effects on collagen structure or function.
Implementation Method 1
A single mixing step method using a buffer solution with a base to polymerize collagen
Implementation Method 2
The inventors have developed methods for sterilizing the collagen, collagen compositions, collagen matrices, collagen solutions, and lyophilized collagen described herein by using ultraviolet radiation
Data Source
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AI summary
The invention relates to methods of preparing matrices, and compositions therefor. In particular, the invention relates to methods of preparing collagen matrices, and compositions therefor, including kits and graft compositions.