Crosslinked Hydrogel Medium for Tissue Storage and Sterility
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Solution Overview
Problem
Existing technologies face challenges in preserving the sterility, efficacy, and viability of tissues during processing, transport, and storage due to dehydration, microstructural collapse, microorganism proliferation, and oxidative damage, leading to complications like inflammation and scar tissue formation.
Innovation Solution
A hydrogel medium comprising alginate and hyaluronate is used to embed tissue segments, which are processed and stored within this medium, utilizing crosslinking methods and stimuli to maintain tissue integrity and viability, and can be applied as a membranous barrier for wound coverage and tissue reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tissue is stored and transported without hydrogel medium, then processing and storage is simpler, but tissue properties deteriorate due to dehydration, microstructural collapse, and microorganism proliferation
Solution Approach 1:
The hydrogel medium serves as an intermediary substance between the tissue and the external environment. It physically embeds the tissue segments, providing a protective barrier that prevents direct exposure to harmful conditions during storage and transport, thereby maintaining tissue properties without requiring complex active preservation systems
Solution Approach 2:
The hydrogel medium undergoes crosslinking transformation to change its physical state from a soluble polymer solution to a gel network structure. This parameter change enables the medium to maintain tissue segments in a stable, hydrated state during storage, preventing dehydration and microstructural collapse while remaining relatively simple in composition
2Reliability
If tissue is embedded in hydrogel medium, then sterility and viability are maintained, but the medium must be crosslinked to prevent degradation
Solution Approach 1:
The hydrogel medium is designed to undergo crosslinking automatically upon contact with body fluids or through simple environmental triggers. This self-service mechanism eliminates the need for complex external crosslinking equipment or processes, allowing the medium to transition from a soluble state to a stable gel state naturally during or after application
Solution Approach 2:
The crosslinking process involves a controlled parameter change in the polymer structure, where polymer chains form crosslinks to create a gel network. This chemical transformation provides structural stability and prevents degradation while maintaining biocompatibility, achieving reliable sterility maintenance through a relatively simple chemical process
3Productivity
If hydrogel medium is used to increase tissue yield, then more tissue can be obtained from donor, but tissue must be dispersed and embedded which increases processing complexity
Solution Approach 1:
The tissue is divided into multiple segments that can be dispersed throughout the hydrogel medium. This segmentation allows a single donor tissue source to be distributed across multiple smaller units, effectively increasing the total tissue yield available for transplantation while the hydrogel provides a unified storage matrix for all segments
Solution Approach 2:
The hydrogel medium serves multiple functions simultaneously: it acts as a storage matrix, a transport medium, a preservation solution, and a delivery system. This multi-functionality consolidates what would otherwise require multiple separate processing steps and systems into a single integrated process, reducing overall complexity while maximizing tissue yield
4Reliability
If hydrogel medium is applied as membranous barrier, then wound coverage and tissue reconstruction are improved, but the medium occupies space and adds volume
Solution Approach 1:
The hydrogel medium forms a flexible, conformable barrier that can be applied as a thin film or membrane-like structure. This thin-film approach provides effective wound coverage and tissue protection while minimizing the volume occupied by the protective medium, allowing it to conform to irregular wound surfaces without adding excessive bulk
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 hydrogel medium effectively preserves tissue properties, enhances handling and clinical efficacy, reduces surgical complications, and allows for increased tissue yield and surface area, while maintaining sterility and viability during processing and storage.
Implementation Method 1
A hydrogel medium comprising alginate and hyaluronate is used to embed tissue segments, which are processed and stored within this medium, utilizing crosslinking methods and stimuli to maintain tissue integrity and viability
Implementation Method 2
Existing technologies face challenges in preserving the sterility, efficacy, and viability of tissues during processing, transport, and storage due to dehydration
Implementation Method 3
preserving the sterility, efficacy, and viability of tissues during processing, transport, and storage
Implementation Method 4
Existing technologies face challenges in preserving the sterility, efficacy, and viability of tissues during processing, transport, and storage due to dehydration, microstructural collapse, microorganism proliferation, and oxidative damage
Data Source
AI summary
An embodiment includes therapeutic compositions that include a hydrogel medium and a plurality of tissue segments dispersed within the medium. The hydrogel medium preserves and stores the tissue through processing, transport, and storage. The embodiment addresses an identified problem of preserving a tissue, whether such tissue is fresh, cryopreserved, or sterile. The therapeutic compositions may be placed on or within the body to cover and protect wounds, provide a scaffold for reconstruction, repair, or replacement, and reduce surgical complications as a result of inflammation and scar tissue formation. Other embodiments are described herein.