Pixel Array Dermatome for Scarless Skin Grafting
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Solution Overview
Problem
Current methods for managing age-related skin laxity and burns often result in visible scarring, prolonged healing times, and limitations in skin graft harvesting, particularly due to the need for extensive surgical incisions and donor site deformities.
Innovation Solution
The Pixel Array Dermatome (PAD) system allows for the fractional resection and harvesting of skin grafts without visible scarring by using a pixelated approach, where skin is incised into small plugs that are harvested onto a flexible, semi-porous membrane and applied to the recipient site, promoting primary healing and minimizing scarring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional plastic surgery procedures are used to resect redundant lax skin, then skin tightening is achieved, but visible scarring and surgical complications occur
Solution Approach 1:
The patent divides the continuous skin resection process into discrete pixel-sized segments (0.5-4.0 mm diameter). Multiple individual skin pixels are removed in a grid pattern rather than one large incision, which allows the remaining skin to contract and tighten while the small pixel sites heal with minimal visible scarring that disperses across the treatment area.
2Object-generated harmful factors
If electromagnetic devices are used to tighten skin without surgery, then surgical scarring is avoided, but the devices are limited to moderate skin laxity and have variable success
Solution Approach 1:
The patent changes the physical parameter of skin removal from continuous (traditional surgery) to discrete pixel-sized units. This parameter change allows the procedure to address severe skin laxity that electromagnetic devices cannot treat, while maintaining the advantage of minimal visible scarring through the dispersion of small healing sites across the treatment area.
3Quantity of substance
If split thickness skin grafts are harvested from donor sites, then skin defects can be covered, but donor site deformities and limited harvesting areas occur
Solution Approach 1:
The patent segments the skin harvesting process into pixel-sized units that can be collected on an adherent membrane. This allows multiple skin pixels to be harvested from a donor site, transferred to a recipient site, and the donor site to heal with minimal visible scarring. The same donor site can be reused for multiple harvesting sessions because the pixelated approach preserves enough skin integrity for repeated procedures.
4Object-generated harmful factors
If long incisions are made to hide scars around anatomical boundaries, then skin laxity is resected, but the incisions are distant from the region of skin laxity and effectiveness is limited
Solution Approach 1:
Instead of making long incisions at anatomical boundaries to hide scars (traditional approach), the patent inverts the approach by making numerous tiny incisions directly at the treatment site in a pixelated pattern. This allows the skin tightening to occur exactly where needed while the small pixel sites heal with minimal visible scarring that is dispersed across the treatment area rather than concentrated at distant anatomical boundaries.
Data Source
AI summary
Systems, instruments, and methods are described in which an apparatus comprises a housing including a scalpet device. The scalpet device includes a scalpet array that includes scalpets arranged in a pattern. The scalpets are deployable from the housing to generate incised skin pixels at a target site. The housing is positioned and the scalpet array is deployed into tissue at the target site. Incised skin pixels are generated when the target site is a donor site, and skin defects are generated when the target site is a recipient site. The incised skin pixels are harvested.