Two-Ply Tricot Fabric Low Friction Interface
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Solution Overview
Problem
Individuals, particularly wheelchair users and those who spend extended periods in bed, face a high risk of developing decubitus ulcers due to prolonged pressure and shear forces, leading to significant health complications and economic burdens, as existing seat cushions often fail to effectively manage friction and heat dissipation.
Innovation Solution
A specialized clothing device featuring a two-ply system of tricot fabric with shiny sides facing each other and oriented perpendicular to each other, creating a low friction zone to reduce skin-object friction, combined with strategically placed higher friction zones to prevent slippage, utilizing materials like Spandex and PTFE for enhanced elasticity and low friction coefficients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If foam materials are used to control peak pressure, then pressure distribution is improved, but heat dissipation and moisture evaporation are impeded
Solution Approach 1:
The patent employs porous foam materials that maintain pressure distribution benefits while allowing heat and moisture to pass through. The porous structure creates channels for thermal and moisture transport, resolving the contradiction between pressure management and heat dissipation.
Solution Approach 2:
The invention uses composite material systems combining foam with breathable fabric layers. This composite structure integrates the pressure-relieving properties of foam with the heat-dissipating and moisture-wicking capabilities of permeable textiles, simultaneously addressing both requirements.
2Object-affected harmful factors
If friction-reducing materials are used at the skin interface, then shear forces are reduced, but slippage control is compromised
Solution Approach 1:
The patent applies different friction characteristics to different zones of the garment. The area contacting the skin uses low-friction materials to reduce shear forces, while peripheral or structural zones use higher-friction materials to prevent slippage, thereby resolving the contradiction locally.
Solution Approach 2:
The invention introduces an intermediate layer or system that mediates between the skin and the external environment. This intermediate structure provides the low-friction interface needed to reduce shear while maintaining overall garment stability through anchoring mechanisms or higher-friction boundary zones.
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 device significantly reduces friction and shear forces, thereby minimizing the risk of decubitus ulcers and associated complications, while allowing for effective movement and positioning, thereby reducing the incidence and severity of skin trauma.
Implementation Method 1
a two-ply system of fabric, each layer having a shiny side, with the shiny sides of the two layers of fabric facing each other... creating a low friction zone to reduce skin-object friction
Implementation Method 2
utilizing materials like Spandex and PTFE for enhanced elasticity and low friction coefficients
Implementation Method 3
utilizing materials like Spandex and PTFE for enhanced elasticity
Data Source
AI summary
A device for reducing friction between a portion of skin of a living being and an object adjoining that portion includes two layers of tricot fabric. Each layer has a shiny side and the shiny sides of the two layers of fabric face each other. Each layer of fabric has a machine direction M, and the layers of fabric are positioned such that the machine direction M of one layer is perpendicular to the other layer. A garment includes a low friction zone and a higher friction zone adjacent the low friction zone, the higher friction zone comprising a material different from a material of the low friction zone. The low friction zone comprises two layers of fabric with their shiny sides, facing each other and their machine directions M oriented perpendicularly. Also described is a method of preventing or treating a skin wound comprising clothing a living being in a garment.