Bi-elastic Compression Bandage with Interwoven Padding
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Solution Overview
Problem
Compression bandages with multiple layers are difficult to apply correctly, leading to inconsistent pressure distribution and discomfort, as they must be carefully shaped to fit the limb morphology and can form folds, reducing treatment effectiveness and patient comfort.
Innovation Solution
A bi-elastic compression bandage with a compression layer that is elastic in both longitudinal and transverse directions, incorporating a foam layer and a non-woven padding layer, where fibers from the padding layer are intermingled with the compression layer and foam to enhance flexibility and comfort, allowing the bandage to adapt to limb morphology without folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple layers of bandages are used to provide both compression and padding functions, then the protective and comfort functions are improved, but the application complexity increases and pressure control becomes less precise
Solution Approach 1:
The patent combines the compression layer and padding layer into a single integrated bandage structure. The compression layer contains embedded padding zones with higher elastane content that provide localized cushioning directly where needed, eliminating the need for separate padding layers while maintaining both compression and protection functions in one component.
Solution Approach 2:
The compression layer is designed to perform multiple functions simultaneously: it provides overall compression through its elastic properties, localized padding through embedded high-elastane zones, and moisture management through its permeable structure. This multi-functional design replaces what would traditionally require multiple separate layers.
2Object-affected harmful factors
If multiple layers of bandages are used to provide both compression and padding functions, then the protective and comfort functions are improved, but the pressure distribution becomes less consistent
Solution Approach 1:
The compression layer incorporates zones with different elastane concentrations at specific locations corresponding to anatomical features requiring extra padding (malleoli, condyles, etc.). This local variation in material properties ensures consistent pressure distribution by providing targeted cushioning exactly where needed, rather than using uniform padding throughout.
Solution Approach 2:
The padding zones are pre-integrated into the compression layer during manufacturing at the correct positions and with the appropriate thickness. This preliminary positioning ensures that when the bandage is applied, the padding is already in the correct location to distribute pressure evenly, eliminating the need for adjustment during application.
3Reliability
If traditional compression bandages are applied with careful conformation to limb shape, then the treatment effectiveness is improved, but the application time and skill requirement increase
Solution Approach 1:
The bandage is designed to automatically conform to the limb shape through its elastic properties and integrated padding zones. The high-elastane regions naturally migrate to areas of higher curvature during application, providing self-adjusting cushioning without requiring the applicator to manually position padding or make adjustments, thus maintaining effectiveness while reducing application time and skill requirements.
4Reliability
If traditional compression bandages are applied with careful conformation to limb shape, then the treatment effectiveness is improved, but the risk of folds and creases increases
Solution Approach 1:
The bandage uses a composite structure combining a base compression layer with embedded padding zones of different material properties. The high-elastane padding zones are distributed throughout the compression layer, creating a heterogeneous structure that maintains flexibility while resisting fold formation, particularly at areas prone to creasing.
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 bi-elastic compression bandage simplifies application, maintains consistent pressure distribution, improves patient comfort, and ensures effective treatment by naturally conforming to the limb's shape, reducing the risk of folds and enhancing reproducibility.
Implementation Method 1
The tension is chosen so that the bandage applies the necessary pressure to treat the identified condition, based on the bandage's elastic modulus
Implementation Method 2
the foam layer has a thickness, measured in a direction perpendicular to the longitudinal and transverse directions, of substantially between 1 mm and 3.5 mm, measured according to standard NF EN ISO 5084:2016, under a pressure of 0.5 kPa
Data Source
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AI summary
The compression strip (1) comprises at least one compression layer (2) intended to apply the predefined pressure, the compression layer being elastic at least in its longitudinal direction (L), corresponding to the length of the compression strip, and at least one non-woven padding layer (4), intended to be applied against the skin of the limb part, the padding layer (4) being attached by interweaving of some of the fibres of the padding layer (4) in the compression layer (2). The compression strip is also elastic in its transverse direction (T), corresponding to the width of the compression strip.