Aligned Hydrogel Tubes for Conformal Tissue Regeneration
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Solution Overview
Problem
Existing tissue engineering applications face challenges in providing materials that can conform to any defect size while supporting direct growth, as hydrogels lack topographical cues and rigid scaffolds do not readily adapt to injury geometries.
Innovation Solution
Development of organized hydrogel structures, including porous hydrogel tubes and aligned hydrogel tubes, which can be tailored to fit any defect size and provide an aligned substrate for tissue regeneration, combining the benefits of both hydrogels and scaffolds into a singular treatment option.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hydrogels are used to conform to injury site, then adaptability to defect size is improved, but topographical cues for tissue growth are lost
Solution Approach 1:
The patent employs porous hydrogel tubes with controlled pore sizes and interconnected porosity to provide both conformability to injury sites and topographical guidance for tissue growth. The porous structure allows cellular infiltration while maintaining aligned channels that serve as physical cues for regeneration.
Solution Approach 2:
The invention combines hydrogel materials with structured tube architectures to create composite structures that integrate the soft, adaptable nature of hydrogels with the directional guidance of rigid scaffolds. This composite approach enables simultaneous conformity to defect geometry and provision of topographical cues.
2Manufacturing precision
If rigid scaffolds with aligned channels are used, then topographical cues for regeneration are improved, but adaptability to injury geometries is lost
Solution Approach 1:
The patent utilizes flexible hydrogel tube structures that can bend and conform to various injury geometries while maintaining their internal aligned channel architecture. The tubes are designed with sufficient flexibility to adapt to curved or irregular defect shapes while preserving the topographical guidance function.
Solution Approach 2:
The hydrogel tubes are designed to be dynamically adaptable, allowing them to conform to the specific geometry of each injury site while maintaining their structural integrity and aligned channel configuration. This dynamic property enables the same tube design to serve multiple injury geometries.
3Adaptability or versatility
If modular tube systems are used to fit any defect size, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent employs segmented modular tube units that can be individually implanted or assembled to match the specific dimensions and geometry of the injury site. Each tube module contains the essential aligned channel structure, and multiple modules can be combined through standardized interfaces to create customized bridge lengths and configurations.
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 structures facilitate personalized, injury-specific modular bridges that enhance tissue repair and regeneration, particularly in spinal cord injuries, by conforming to defect sizes and guiding axon and cell growth, with potential applications in nerve, musculoskeletal, and cardiovascular repair.
Implementation Method 1
cross-linking the plurality of hydrogel particles to form the organized hydrogel structure
Data Source
AI summary
Biomaterial implants and methods for facilitating tissue repair and regeneration are provided herein. The implants may include organized hydrogel structures. Such implants are fabricated using a 2-phase polymerization technique, wherein hydrogel-based microspheres are formed as an intermediate product of the 2-phase polymerization technique. The implants of various embodiments provide an aligned substrate to guide tissue regeneration and can be cut or formed to conform to the size and shape of an injury.