Disposable Friction Barrier for Blister Prevention
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Solution Overview
Problem
Existing solutions for preventing skin blisters, such as silicone dressings and liquid barrier films, require application and removal, can cause additional skin trauma, and lack statistical evidence for effectiveness in reducing blister development, while being more labor-intensive and costly compared to potential alternatives.
Innovation Solution
A friction barrier with a static coefficient of friction less than 0.2, comprising a generally flat sheet material or pre-formed material placed between a support surface and the skin surface, designed to reduce friction, pressure, shear, and moisture, allowing for reuse without application or removal from the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicone dressings or liquid barrier films are applied to reduce friction and prevent blisters, then the risk of blister development is reduced, but additional labor for application and removal is required and skin trauma may occur
Solution Approach 1:
The patent employs a disposable friction-reducing insert that is placed inside footwear rather than applied directly to skin. This disposable approach eliminates the need for complex application and removal procedures while maintaining blister prevention effectiveness, directly resolving the time loss contradiction.
Solution Approach 2:
The invention introduces an intermediary friction-reducing insert positioned between the skin and the shoe interior. This mediator reduces direct friction and shear forces on the skin, providing blister prevention without requiring direct skin application or removal, thus eliminating the time loss associated with traditional methods.
2Reliability
If silicone dressings or liquid barrier films are used for friction reduction, then blister prevention is improved, but the cost and labor intensity increase compared to simpler alternatives
Solution Approach 1:
The patent utilizes inexpensive, disposable materials for the friction-reducing insert that can be mass-produced through simple manufacturing processes. This approach maintains high blister prevention effectiveness while dramatically reducing both manufacturing complexity and cost compared to medical-grade silicone dressings or liquid barrier films.
Solution Approach 2:
The invention changes the approach from using expensive, complex materials requiring precise application to using simple, disposable inserts with optimized friction parameters. By focusing on material selection and geometric design rather than complex manufacturing processes, the solution achieves comparable or superior effectiveness at lower cost and manufacturing complexity.
3Reliability
If foam dressings are applied to reduce shear stress and friction, then the risk of blister development is reduced, but additional trauma to the skin may occur during application and removal
Solution Approach 1:
The patent positions a friction-reducing insert as an intermediary between the skin and the shoe interior, eliminating the need for direct skin application. This mediator absorbs all friction and shear forces, preventing blister development while completely avoiding skin trauma associated with applying and removing adhesive dressings.
Solution Approach 2:
The disposable nature of the insert means it is discarded after use rather than removed from skin. This eliminates the mechanical trauma that occurs during removal of adhesive foam dressings, while the insert continues to provide friction reduction and blister prevention throughout its service life.
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 friction barrier effectively reduces the risk of blister development by minimizing friction and shear forces between the skin and support surface, providing a cost-effective and labor-efficient solution that remains in place without causing additional skin trauma.
Implementation Method 1
A friction barrier adapted to position between a support surface and a skin surface... having a static coefficient of friction which reduces one or more of the mechanical factors contributing to blister development when the skin rubs against a support surface, including friction, pressure, shear, or moisture
Data Source
AI summary
A friction barrier adapted to position between a support surface and a skin surface, wherein said friction barrier comprises a generally flat sheet material generally conformable by placement between said support surface and said skin surface, or a pre-formed material placed between said support surface and said skin surface, wherein said friction barrier has first side adapted to face said skin surface, the first side having a static coefficient of friction which reduces one or more of the mechanical factors contributing to blister development when the skin rubs against a support surface, including friction, pressure, shear, or moisture