Processed Adipose Tissue Allograft to Reduce Cysts and Preserve Volume
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Solution Overview
Problem
Current aesthetic and reconstructive surgical procedures using autologous fat transfers and synthetic fillers face complications such as donor site morbidity, poor survival of adipocytes, cyst formation, immune rejection, and poor mechanical properties, leading to suboptimal results and safety concerns.
Innovation Solution
A minimally manipulated adipose tissue allograft is developed, retaining native extracellular matrix and adipocyte structure through a freeze-thaw process, mechanical grinding, and gentle rinsing with non-ionic surfactants and sterile solutions to maintain structural integrity and reduce immune response components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If autologous fat transfer is used to fill voids, then host immune rejection is minimized and adipogenesis is promoted, but donor site morbidity occurs and adipocyte survival is poor leading to necrosis
Solution Approach 1:
The patent extracts and removes harmful components (free lipids, cellular debris, damaged tissue) from the adipose tissue through centrifugation and filtration processes, while retaining the beneficial adipocytes and extracellular matrix. This resolves the contradiction by eliminating the source of necrosis and donor site morbidity while preserving the viable tissue needed for successful grafting.
Solution Approach 2:
The patent applies controlled freezing and thawing parameters to selectively damage and remove compromised adipocytes while preserving healthy ones. By optimizing temperature parameters and processing time, the method enhances adipocyte survival in the graft while minimizing donor site morbidity through controlled tissue preparation.
2Reliability
If heterogeneous unprocessed fat is used, then adipogenesis is promoted, but cyst formation and calcifications occur due to free lipids and tissue pieces
Solution Approach 1:
The patent systematically extracts free lipids, cellular debris, and damaged tissue pieces through centrifugation, filtration, and washing steps. This removal of harmful components prevents cyst formation and calcifications while maintaining the extracellular matrix and viable adipocytes necessary for tissue regeneration and adipogenesis.
Solution Approach 2:
The patent creates a selectively purified tissue product where different components are treated differently: free lipids and debris are removed, while extracellular matrix and viable adipocytes are preserved. This local quality differentiation ensures tissue regeneration capability while eliminating the sources of cyst formation and calcifications.
3Ease of operation
If synthetic polymers are used as fillers, then injectable control and biological inertness are achieved, but host integration is reduced and granuloma formation occurs
Solution Approach 1:
The patent transforms adipose tissue into an injectable form through controlled processing (freezing, thawing, centrifugation, filtration) while preserving the native extracellular matrix structure. This maintains the biological properties that enable host integration and adipogenesis, unlike synthetic polymers, while achieving the necessary injectable consistency for clinical application.
4Quantity of substance
If biodegradable synthetic polymers are used, then compositional control is achieved, but mechanical properties are poor and volume retention is reduced
Solution Approach 1:
The patent utilizes the natural composite structure of adipose tissue, combining adipocytes, extracellular matrix (collagen, elastin, proteoglycans), and vascular components into a unified graft material. This native composite structure provides both the compositional control needed for predictable outcomes and the mechanical properties necessary for volume retention and structural support, overcoming the limitations of synthetic polymer composites.
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 adipose tissue allograft maintains high adipocyte and ECM content, ensuring better volume retention, reduced immune response, and improved mechanical properties, making it suitable for soft tissue supplementation with minimal adverse effects.
Implementation Method 1
a method of processing adipose tissue includes the steps of freezing and thawing a human adipose tissue
Data Source
AI summary
A processed adipose tissue is described, having an extracellular matrix derived from human adipose tissue and adipocyte cells having an intact adipocyte composition of at least 10%. A method of processing adipose tissue and a media loading tool are also described.