Pixel Array Dermatome Fractional Resection for Scar Reduction
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Solution Overview
Problem
Current methods for addressing skin laxity, such as plastic surgery and electromagnetic devices, are limited by scarring, pain, and inefficiency, and existing skin grafting techniques face challenges like donor site deformity and limited availability of non-burned skin areas for harvesting.
Innovation Solution
The development of a Pixel Array Dermatome (PAD) system that fractionally resects skin and fat using a scalpet array with depth control, allowing for minimal invasive procedures with reduced scarring and repeated harvesting of skin grafts from the same donor site, utilizing a semi-porous adherent membrane for healing and minimizing donor site deformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If plastic surgery procedures are used to resect redundant lax skin, then skin tightening is achieved, but visible scarring and surgical pain occur
Solution Approach 1:
The patent divides the continuous skin resection into discrete pixel-sized incisions (0.5-4.0mm) arranged in patterns. This segmentation allows the skin to be tightened through multiple small defects rather than one large incision, significantly reducing visible scarring while maintaining the skin tightening effect.
Solution Approach 2:
The patent applies different treatment intensities and patterns to different regions of the skin. By varying the pixel density, size, and distribution across the treatment area, it achieves optimal skin tightening in each zone while minimizing scarring visibility, particularly in aesthetically sensitive areas.
2Reliability
If conventional skin grafting is performed to harvest skin from donor sites, then skin defects are covered, but donor site deformity and limited availability of non-burned skin occur
Solution Approach 1:
The patent uses pixel array dermatomes to harvest skin in small discrete pixels rather than large sheets. This segmentation allows harvesting from limited non-burned areas while distributing the donor site defects across larger regions, reducing the visibility and deformity of each individual harvesting site.
Solution Approach 2:
The patent harvests skin pixels in multiple sequential passes rather than attempting to harvest all needed skin in one procedure. This allows the donor site to heal partially between sessions, reducing deformity, and enables harvesting from areas that would otherwise be insufficient for complete coverage.
3Object-affected harmful factors
If fractional resection with pixel array dermatome is used, then scarring is minimized and repeated harvesting is enabled, but multiple treatment sessions and device complexity are required
Solution Approach 1:
The pixel array dermatome device is designed to perform multiple functions: it can harvest skin pixels for grafting, create fractional ressection patterns for skin tightening, and treat different body areas with varying pixel patterns. This multi-functionality justifies the device complexity by eliminating the need for multiple separate instruments.
Solution Approach 2:
The patent varies multiple parameters of the pixel array including pixel size (0.5-4.0mm), spacing, density, and arrangement patterns. These parameter changes allow the same basic device structure to adapt to different treatment requirements, reducing the need for multiple specialized devices while maintaining scarring minimization benefits.
Data Source
AI summary
Embodiments include devices and methods configured to fractionally resect skin and/or fat. Fractional resection is applied as a stand-alone procedure in anatomical areas that are off-limits to conventional plastic surgery due to the poor tradeoff between the visibility of the incisional scar and amount of enhancement obtained. Fractional resection is also applied as an adjunct to established plastic surgery procedures such as liposuction, and is employed to significantly reduce the length of incisions required for a particular application. The shortening of incisions has application in both the aesthetic and reconstructive realms of plastic surgery.