Tissue Matrix Fragment Sheets for Cellular Ingrowth
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Solution Overview
Problem
Current tissue products for soft or hard tissue treatment, such as acellular dermal tissue matrices, face limitations in their ability to maintain structural integrity during storage and facilitate cellular ingrowth and vascularization effectively.
Innovation Solution
The development of tissue products comprising sheets of tissue matrix fragments with lengths between 5 µm and 300 µm, which are joined to form a stable sheet structure, allowing for improved properties such as reduced susceptibility to damage during freezing and enhanced cellular ingrowth and vascularization, achieved through mechanical processing and potential cross-linking methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If tissue products are made from larger tissue matrix particles, then structural integrity during storage is maintained, but cellular ingrowth and vascularization are hindered
Solution Approach 1:
The tissue matrix is divided into fine particles with specific size ranges (5-300 μm) to create an optimal balance between structural stability and biological functionality. This segmentation allows cells to penetrate and vascularize the matrix while maintaining sufficient structural integrity for storage and handling.
Solution Approach 2:
The patent specifies precise particle size parameters (5-300 μm) to resolve the contradiction between structural integrity and cellular ingrowth. By controlling the particle size within this range, the material achieves both storage stability and enhanced biological integration.
2Adaptability or versatility
If tissue products are processed to enhance cellular ingrowth, then biological integration is improved, but mechanical strength is reduced
Solution Approach 1:
The particle size is optimized within the 5-300 μm range to balance mechanical strength and cellular ingrowth. This parameter control ensures that the material remains mechanically robust while providing sufficient porosity and surface area for cell penetration and vascularization.
Solution Approach 2:
The tissue product combines fine tissue matrix particles with cross-linking agents to create a composite structure that maintains mechanical strength while enhancing biological functionality. The cross-linking provides structural reinforcement without preventing cellular ingrowth.
3Reliability
If tissue products are crosslinked to improve stability, then resistance to freezing damage is enhanced, but immune response may increase
Solution Approach 1:
The cross-linking degree and particle size are carefully controlled to achieve freezing resistance while minimizing immune response. The fine particle structure (5-300 μm) allows for uniform cross-linking distribution that protects against freezing damage without creating excessive foreign body reactions.
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 resulting tissue products demonstrate improved stability during storage and enhanced biological integration, facilitating effective tissue repair and regeneration with improved mechanical properties and reduced immune response.
Implementation Method 1
The particulates can be crosslinked in order to form reconstituted tissue layers
Data Source
Figure 1
AI summary
The present disclosure provides a tissue product comprising a tissue sheet. The sheet can be formed from a plurality of tissue matrix fragments.