Preserved Collagen Connective Tissue Processing for Biocompatibility
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Solution Overview
Problem
Current methods for processing collagen connective tissue from animal donors fail to prevent immune and inflammatory rejection reactions when implanted in humans, limiting their effectiveness in surgical procedures such as correcting penile curvature and facial reconstruction.
Innovation Solution
A method involving trimming, washing, stabilizing with ethanol, treating with a polyethylene glycol and hydrogen peroxide solution, washing and conserving in ethanol, sterilizing with ethanol and hydrogen peroxide, and storing in an ethanol solution with indomethacin to produce preserved collagen connective tissue that minimizes rejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to process collagen connective tissue from animal donors, then the tissue can be prepared for implantation, but immune and inflammatory rejection reactions occur
Solution Approach 1:
The tissue undergoes preliminary treatment with polyethylene glycol and hydrogen peroxide solution before implantation to modify its surface properties and reduce immunogenicity. This preliminary action prepares the tissue to be recognized as self by the recipient's immune system, preventing rejection reactions.
Solution Approach 2:
The chemical composition and surface properties of the collagen tissue are modified through treatment with specific solutions (polyethylene glycol and hydrogen peroxide). These parameter changes alter the tissue's immunogenic characteristics, making it biocompatible with human recipients while maintaining its structural integrity.
2Duration of action of stationary object
If the tissue is preserved using conventional methods, then it can be stored for later use, but calcification occurs reducing longevity
Solution Approach 1:
The preservation method uses polyethylene glycol and hydrogen peroxide treatment to convert potentially harmful residual organic materials into beneficial stabilized structures. This process prevents calcification by properly stabilizing the collagen matrix, thereby extending the tissue's longevity for implantation use.
3Reliability
If the tissue is treated to reduce immunogenicity, then biocompatibility improves, but the processing complexity increases
Solution Approach 1:
The polyethylene glycol and hydrogen peroxide solution performs multiple functions simultaneously: it stabilizes the collagen structure, reduces immunogenicity, prevents calcification, and ensures sterile conditions. This multi-functional approach simplifies the overall processing complexity while achieving multiple desirable outcomes.
Data Source
AI summary
The present invention relates to the preservation of collagenous connective tissue so as to achieve the structural integrality of the collagen fibers, rendering the tissue suitable for use in implants without causing immune and/or inflammatory rejection, comprising the steps of trimming the collagenous connective tissue in a buffer solution, washing the connective tissue with the buffer solution, stabilizing the tissue in an ethanol solution, treating the tissue with polyethylene glycol solution and hydrogen peroxide, washing and storing the tissue in ethanol, sterilizing the tissue with an ethanol and hydrogen peroxide solution and storing the tissue for transport in ethanol and indomethacin solution. The preferred use of the present invention is in surgical interventions for correcting various anomalies of the human body, where the graft is particularly required.