Short-Stretch Limb Compression Garment
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Solution Overview
Problem
Conventional limb compression garments fail to provide consistent therapeutic compression as they stretch excessively with swelling, leading to inadequate support and compression at higher fluid accumulation levels.
Innovation Solution
A short-stretch textile material is developed, comprising elastic and inelastic fibers interlaced in specific directions, limiting cross-stretch and maintaining constant compression by abruptly ending stretch at less than 100% of the unstretched length, ensuring consistent therapeutic compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional limb compression garments are used, then they provide initial compression to the limb, but they stretch excessively with swelling leading to inadequate support and compression at higher fluid accumulation levels
Solution Approach 1:
The compression garment uses a dynamic material composition with two types of fibres (elastic and inelastic) that allow the garment to adapt its compression properties based on the degree of swelling. The elastic fibres provide stretchability for initial swelling accommodation, while the inelastic fibres prevent excessive stretching at higher swelling levels, maintaining therapeutic compression dynamically across different swelling states.
Solution Approach 2:
The garment is constructed from a composite textile material comprising two distinct fibre types: elastic fibres (first plurality) that can stretch up to their elastic limit, and inelastic fibres (second plurality) that limit maximum extension. This composite structure combines the benefits of both fibre types to achieve the desired compression characteristics that neither fibre type could provide alone.
2Stability of the object's composition
If the garment material is made entirely inelastic, then it provides constant compression, but it lacks flexibility and cannot accommodate initial swelling
Solution Approach 1:
The textile material exhibits local quality differentiation through its dual fibre composition. The elastic fibres provide localized stretchability to accommodate swelling, while the inelastic fibres provide localized structural stability to maintain compression. This spatial distribution of different fibre properties within the same material allows the garment to simultaneously achieve flexibility for swelling accommodation and stability for constant compression.
3Ease of operation
If the garment stretches excessively with swelling, then it allows flexibility and comfort, but it provides inadequate therapeutic compression at higher fluid accumulation levels
Solution Approach 1:
The garment's compression parameters are controlled by changing the material composition parameters - specifically the ratio and properties of elastic versus inelastic fibres. By adjusting these material parameters, the garment can provide appropriate compression levels that maintain therapeutic reliability while ensuring comfort through controlled flexibility and stretch characteristics.
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 solution provides effective and consistent compression to the limb, preventing significant stretching at higher swellings while allowing flexibility at lower swellings, thus offering enhanced support and therapeutic benefits.
Implementation Method 1
a first plurality of substantially elastic fibres arranged in the plane of the material in a first direction, substantially parallel to each other, the first plurality of substantially elastic fibres being stretchable up to an elastic limit of at least 15% of their unstretched length
Data Source
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AI summary
Limb compression garments are used to treat a variety of conditions, most notably swelling and oedema, in which a higher than normal amount of fluid accumulates in the interstitium beneath the skin of a patient. According to the present invention, there is provided a limb compression garment 9 for applying a compressive force to a limb of a person when wrapped around that limb, the limb compression garment comprising a planar textile material 11 in which a first plurality of substantially elastic fibres 1 allows the garment to stretch in a first direction in a substantially elastic manner; however, a first plurality of substantially inelastic fibres 5,7 abruptly prevents elastic stretch beyond a maximum extension.