Pixel Array Dermatome Fractional Skin Resection
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Solution Overview
Problem
Current methods for managing age-related skin laxity and burns often result in visible scarring and limitations in skin graft harvesting, with existing surgical procedures being invasive and carrying risks of complications, while electromagnetic devices have variable success and side effects.
Innovation Solution
The development of a system using a Pixel Array Dermatome (PAD) that enables fractional resection and skin grafting with a scalpet array and vacuum component, allowing for repeated harvesting of skin grafts without visible scarring by creating small, pixelated skin plugs that can be easily aligned and healed, reducing donor site deformity and promoting primary healing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional surgical procedures are used to resect redundant skin, then skin tightening is achieved, but visible scarring and surgical complications occur
Solution Approach 1:
The patent divides the continuous surgical incision into multiple small, discrete pixel-sized incisions (typically 0.5-2.0 mm in diameter). These segmented incisions are distributed across the treatment area in a grid pattern, allowing skin tightening through collagen remodeling while each individual pixel heals with minimal visible scarring that is dispersed throughout the treatment zone rather than concentrated in a single visible line.
2Quantity of substance
If split thickness skin grafts are harvested from donor sites, then skin defects can be covered, but donor site deformity and visible scarring result
Solution Approach 1:
The patent harvests skin in pixel-sized segments rather than large sheet grafts. Multiple small skin pixels are removed from the donor site through a grid pattern of tiny incisions, allowing sufficient skin to be obtained for grafting while the donor site heals with numerous tiny scattered scars that are far less deforming than a single large incision.
Solution Approach 2:
The patent applies different treatment intensities and pixel densities to different regions of the donor site. Areas with better healing potential receive standard pixelation, while sensitive or cosmetically critical areas use smaller pixels or reduced density, optimizing both graft yield and aesthetic outcome based on local tissue characteristics.
3Ease of operation
If electromagnetic devices are used for skin tightening, then non-invasive treatment is achieved, but variable success and side effects occur
Solution Approach 1:
The patent introduces a controlled mechanical intermediary step (pixelated incision creation) that bridges the gap between non-invasive and fully invasive approaches. The pixelated pattern acts as a controlled injury template that guides subsequent healing and collagen deposition, providing more reliable and predictable results than electromagnetic energy alone while maintaining minimal invasiveness through the small, discrete nature of the incisions.
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
This approach allows for effective skin tightening and grafting with minimal scarring, enabling the treatment of various skin laxity regions and burns by promoting primary healing and reducing the need for extensive surgical incisions, thereby improving aesthetic outcomes and patient comfort.
Implementation Method 1
a vacuum component configured to apply negative pressure to a skin surface
Data Source
AI summary
Systems, instruments, and methods for minimally invasive procedures including one or more of fractional resection, fractional lipectomy, fractional skin grafting, and/or fractional scar revision are described. Embodiments include instrumentation comprising a scalpet assembly coupled to a carrier, and the scalpet assembly includes a scalpet array. The scalpet array includes one or more scalpets configured for fractional resection, fractional lipectomy, fractional skin grafting, and/or fractional scar revision. The system includes a vacuum component coupled to the scalpet assembly and configured to evacuate tissue from a site. The carrier is configured to control application of a rotational force and/or a vacuum force to the scalpet assembly.