Segmented Tissue Graft for Reconstructive Expansion
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Solution Overview
Problem
Current surgical tissue grafts for internal reconstruction are constrictive, leading to recurrence, stress tears, and inability to expand with increased pressure, and lack traction with anatomic points, limiting their effectiveness in reconstructive and aesthetic procedures.
Innovation Solution
The method involves creating templates with variable patterns for tissue reconstruction grafts, using compression or removal of segments to form internal tissue grafts, and measuring physical properties pre- and post-operatively to enhance flexibility, traction, and longevity, with materials like metal or plastic, and software analysis for customized designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solid, porous sheet with perforations is used for tissue graft reconstruction, then fluid egress and tissue in-growth are enhanced, but the graft becomes constrictive leading to recurrence and inability to expand with increased pressure
Solution Approach 1:
The graft is divided into multiple zones with different patterns - some areas have perforations for fluid egress and tissue in-growth, while other areas maintain solid structure for strength and expandability. This segmentation allows different regions to serve different functions simultaneously.
Solution Approach 2:
Different portions of the graft have different physical properties - some areas are porous for tissue integration, while other areas are solid for structural support and pressure resistance. This local variation in quality allows the graft to meet multiple requirements in different locations.
2Strength
If a constrictive tissue graft is used, then structural integrity is maintained, but stress tears and recurrence occur due to inability to expand
Solution Approach 1:
The graft structure segments load-bearing solid areas from expansion-capable perforated areas, allowing stress to be distributed appropriately while maintaining overall structural integrity and resistance to stress tears.
Solution Approach 2:
The graft incorporates dynamic elements that allow expansion under pressure while maintaining structural integrity. The combination of solid and perforated regions enables the graft to adapt dynamically to pressure changes without tearing or recurring.
3Ease of manufacture
If a smooth tissue graft surface is used, then ease of manufacture is improved, but traction between the graft and anatomic points is reduced
Solution Approach 1:
The graft surface incorporates localized traction-enhancing features such as protrusions, indentations, or patterns in specific areas where attachment to anatomic points is needed, while other areas maintain smooth surfaces for ease of manufacture and tissue compatibility.
Solution Approach 2:
The graft is segmented into attachment zones with traction-enhancing surface features and non-attachment zones with smooth surfaces. This segmentation provides necessary traction at critical points while keeping the overall manufacturing process relatively simple.
Data Source
AI summary
A method and apparatus is provided for creating an internal reconstruction tissue graft. Templates may be used to create a multitude of patterns in a variety of tissue reconstruction grafts. An apparatus may be used to create an internal tissue graft for reconstruction through either compression and/or removal of segments. An apparatus may be used, through either compression and or removal of segments of a preformed template made of synthetics and or metal that mirrors a template that can be used as an internal tissue graft for reconstruction. In a method, such as using software analysis and an apparatus, the physical properties of the tissue graft and its pre- and post-operative properties and appearance may be measured.