Lipoaspirate Processing for Fat Retention
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Solution Overview
Problem
Current methods for autologous fat transfer (AFT) face challenges such as resorption of transplanted adipose tissue, leading to poor aesthetic results and the need for repeated procedures, due to the lack of effective processing techniques for lipoaspirate that enhance fat retention and reduce inflammation.
Innovation Solution
A method involving mechanical processing of lipoaspirate within a liposuction filter canister, specifically vortex-mixing or mechanical mixing, to reduce adipose tissue piece size without rupturing lipocytes, followed by fluid drainage, which results in a processed lipoaspirate enriched with beneficial factors and reduced harmful factors, suitable for improved AFT.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional washing and centrifugation methods are used to process lipoaspirate, then fluid waste is removed and adipose tissue is cleaned, but significant resorption of transplanted fat occurs leading to poor aesthetic results
Solution Approach 1:
The lipoaspirate is segmented into discrete adipose tissue pieces of controlled size (1-5mm) through mechanical processing, creating a heterogeneous size distribution that optimizes both survival and integration. This segmentation prevents excessive resorption while maintaining adequate tissue structure for transplantation.
Solution Approach 2:
The invention changes the physical parameters of adipose tissue processing by controlling piece size distribution (1-5mm), processing time (5-30 minutes), and mechanical stress levels. These parameter changes create optimal conditions for fat survival and reduce resorption compared to traditional methods.
2Ease of operation
If lipoaspirate is processed to reduce adipose tissue piece size, then injection feasibility is improved, but lipocytes may be ruptured reducing cell viability
Solution Approach 1:
The mechanical processing system uses dynamic, controlled mechanical stress that adapts to the tissue properties. The processing time (5-30 minutes) and intensity are optimized to achieve adequate size reduction for injection while maintaining lipocyte viability through controlled, not excessive, mechanical action.
Solution Approach 2:
Specific parameter ranges are established: adipose tissue pieces reduced to 1-5mm, processing time controlled at 5-30 minutes. These parameter changes enable injection feasibility while preserving lipocyte integrity by avoiding excessive mechanical stress.
3Object-affected harmful factors
If multiple washing steps are performed to remove fluid waste, then contamination is reduced, but processing time increases and fat loss occurs
Solution Approach 1:
The liposuction procedure itself performs preliminary cleaning by suctioning out much of the fluid waste during harvest. The tumescent solution facilitates this preliminary separation, reducing the burden on subsequent processing steps and minimizing both time and fat loss while achieving adequate contamination control.
Solution Approach 2:
Instead of multiple exhaustive washing steps, the invention uses a single or limited number of washing steps (1-3 minutes) with controlled fluid volume. This partial action is sufficient to remove harmful contaminants while minimizing processing time and preventing excessive fat loss that would occur with more aggressive washing.
4Stability of the object's composition
If homogeneous adipose tissue pieces are created through extensive processing, then injection consistency is improved, but processing time increases and cell damage occurs
Solution Approach 1:
Rather than creating complete homogeneity, the invention establishes local quality control with adipose tissue pieces in the 1-5mm size range. This controlled heterogeneity provides sufficient uniformity for consistent injection while avoiding the excessive processing time and cell damage that would result from attempting complete homogenization.
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 method enhances AFT success by reducing resorption and inflammation, improving aesthetic outcomes, and allowing for aseptic preparation with reduced contamination risk, making the process quicker, safer, and more efficient, even for non-expert personnel.
Implementation Method 1
mechanically processing (in some embodiments, vortex-mixing) the lipoaspirate inside the liposuction filter canister to mix the lipoaspirate, the mechanical processing reducing the average size of adipose tissue pieces in the lipoaspirate without substantially rupturing lipocytes therein
Implementation Method 2
mechanically processing (in some embodiments, vortex-mixing) the lipoaspirate inside the liposuction filter canister to mix the lipoaspirate
Implementation Method 3
draining fluid released from the lipoaspirate by the mechanical processing from the liposuction filter canister
Data Source
AI summary
Disclosed are methods and devices for processing lipoaspirate that include mechanically-processing harvested lipoaspirate in a liposuction filter canister. In some embodiments, the devices are liposuction devices that include a lipoaspirate processing unit for mechanically-processing lipoaspirate. The mechanical processing reduces the average size of adipose tissue pieces in the lipoaspirate without substantially rupturing lipocytes therein.