Annealed Microgel Dermal Filler Scaffold for Tissue Integration
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Solution Overview
Problem
Existing dermal filler technologies often induce a foreign body response, leading to chronic inflammation, granuloma formation, scar tissue, nodule formation, swelling, and pain, and fail to effectively integrate with the surrounding tissue.
Innovation Solution
A dermal filler formulation comprising a hydrogel that anneals in vivo to form a porous covalently stabilized scaffold, which minimizes foreign body response by forming a cell matrix that integrates with the tissue, mimicking endogenous tissue characteristics and promoting vascularization, and is biocompatible with surrounding tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional dermal filler materials are used, then volume restoration and tissue filling are achieved, but foreign body response increases leading to chronic inflammation, granuloma formation, and scar tissue
Solution Approach 1:
The patent employs a porous scaffold structure formed from annealed microgel particles that allows cell infiltration and tissue integration. The porous architecture enables host cells to migrate into the filler material, replacing foreign synthetic material with native tissue over time, thereby reducing foreign body response while maintaining volume restoration.
Solution Approach 2:
The dermal filler system is designed to self-assemble and self-integrate through in vivo annealing of microgel particles into a cohesive scaffold. The material triggers its own integration by forming a structure that naturally invites cell infiltration and tissue growth, eliminating the need for additional surgical intervention or foreign material removal.
2Object-affected harmful factors
If foreign body response is minimized to reduce inflammation and granuloma formation, then tissue integration improves, but the effectiveness of tissue filling may be compromised
Solution Approach 1:
The porous scaffold maintains structural integrity for volume restoration while providing pathways for cell infiltration. The pore structure allows the scaffold to be gradually replaced by native tissue, ensuring both immediate filling effectiveness and long-term biocompatibility without compromising either aspect.
Solution Approach 2:
The system combines synthetic microgel particles with natural extracellular matrix components created by host cells. This composite structure provides the mechanical support needed for effective tissue filling while the biologically derived matrix components ensure minimal foreign body response and optimal tissue integration.
3Duration of action of stationary object
If the dermal filler forms a stable scaffold structure, then long-term persistence is achieved, but integration with surrounding tissue and vascularization may be delayed
Solution Approach 1:
The porous scaffold structure provides immediate structural support for long-term persistence while simultaneously offering pathways for cell migration and vascular ingrowth. The architecture balances structural stability with biological accessibility, allowing gradual tissue integration without compromising scaffold integrity.
Solution Approach 2:
The scaffold maintains continuous structural support while progressively transitioning from a synthetic framework to a biologically integrated tissue structure. The persistent scaffold continues to provide mechanical support throughout the integration process, ensuring continuous useful action from immediate filling to long-term tissue regeneration.
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 formulation reduces foreign body response by forming a cell matrix that integrates with the tissue, mimicking endogenous tissue characteristics and promoting vascularization, while maintaining biocompatibility and minimizing adverse reactions.
Implementation Method 1
a hydrogel that anneals in vivo to form a porous covalently stabilized scaffold
Implementation Method 2
porous covalently stabilized scaffold
Implementation Method 3
The porous scaffold then degrades in vivo
Implementation Method 4
The porous scaffold then degrades in vivo, allowing a cell matrix to form
Data Source
AI summary
Provided herein are systems and methods for delivering to the tissue site a dermal filler formulation comprising a hydrogel that anneals in vivo to form a porous covalently stabilized scaffold under conditions sufficient to form a cell matrix within the porous covalently stabilized scaffold effective to permanently fill at least part of a tissue site of a subject with the cell matrix while minimizing a foreign body response in the subject.