Compression Bandage System With Foam Layer And Self-Adhering Outer Bandage
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Solution Overview
Problem
Existing compression bandage systems for venous leg ulcers are difficult to apply, prone to slipping and wrinkling, and often fail to maintain consistent therapeutic pressure over time, especially for inexperienced users.
Innovation Solution
A compression bandage system comprising an inner skin-facing, elongated elastic bandage with a foam layer and an outer self-adhering elastic bandage, designed to provide sustained therapeutic pressure with minimal slippage and wrinkling, using a foam layer that faces the skin and an outer bandage with limited extensibility to ensure uniform compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a 3 to 4 layer compression bandage system is used to provide sufficient therapeutic pressure, then the treatment efficacy is improved, but the application process becomes difficult and time-consuming
Solution Approach 1:
The compression bandage is divided into two distinct functional layers: an inner elastic bandage with foam that provides compression and comfort, and an outer self-adhering elastic bandage that provides sustained pressure. This segmentation allows each layer to be optimized for its specific function while simplifying the overall application process compared to traditional 3-4 layer systems.
Solution Approach 2:
The invention combines two different elastic bandage materials with complementary properties - an inner bandage with foam for comfort and initial compression, and an outer self-adhering bandage for sustained pressure. This composite structure achieves the therapeutic pressure requirements while reducing the number of layers needed.
2Reliability
If traditional multi-layer bandages are applied to provide compression, then therapeutic pressure is achieved, but the bandages slip and form wrinkles after application
Solution Approach 1:
The outer bandage is designed with self-adhering properties that allow it to stick to itself when wrapped, creating a self-securing mechanism. This self-service feature eliminates the need for additional fasteners and prevents slippage and wrinkling without requiring complex fastening systems.
3Ease of operation
If other compression bandage systems are designed to be easier to apply, then application simplicity is improved, but the desired therapeutic compressive pressure is not maintained
Solution Approach 1:
The invention carefully controls the elasticity parameters of both bandage layers. The inner bandage has specific elastic properties for comfort, while the outer bandage has limited extensibility (not more than 75% stretch capability) to maintain sustained compressive pressure. This parameter optimization allows easy application while ensuring therapeutic pressure is maintained.
4Ease of operation
If outer bandages with high stretch capability are used for easy application, then application ease is improved, but resting pressure becomes too high and walking pressure insufficient
Solution Approach 1:
The outer bandage is designed with specific elastic parameters - stretch capability of not more than 75% in the longitudinal direction - to achieve the optimal balance between application ease and pressure distribution. This parameter control ensures low resting pressure for comfort while maintaining high walking pressure for therapeutic effect.
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 system allows for easy application and maintains effective, uniform compressive pressure over extended periods, reducing discomfort and improving treatment efficacy for venous leg ulcers without the need for additional bandages.
Implementation Method 1
due to the elasticity of the inner bandage substrate as well as advantageous interfacing between it and the outer bandage upon application, the skin-facing foam layer, in particular the exposed face of the foam layer facing directly towards the skin of the patient, demonstrates a particularly desirable and effective fastening onto the skin of the patient
Implementation Method 2
an outer, elongated, self-adhering elastic bandage which has a compressive force when extended
Implementation Method 3
the outer bandage and inner bandage are configured and adapted, such that in use the inner and outer bandages remain adhered to one another under elastic extension
Data Source
AI summary
A compression bandaging system comprising a) an inner skin facing, elongated, elastic bandage comprising: (i) an elongated, elastic substrate and (ii) an elongated layer of foam, said foam layer being affixed to a face of said substrate and extending 33% or more across said face of substrate in transverse direction and 67% or more across said face of substrate in longitudinal direction; and b) an outer, elongated, self-adhering elastic bandage; said bandage having a compressive force when extended and comprising a woven, knitted or nonwoven bandage comprising a plurality of generally longitudinally extending elastic yarns in the woven, knitted or nonwoven structure, said bandage being coated or impregnated with a polymer binder.; wherein, in use, said foam layer of the inner bandage faces the skin and the outer bandage overlies the inner bandage, and wherein said inner and outer bandage each have a water vapor transmission rate of at least 240 g/m2/24h.