Modular Compression Sleeve Augments Venous Flow
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Solution Overview
Problem
Current compression devices for managing edema, such as the Unna boot and compression stockings, are inflexible, difficult to don and remove, and fail to maintain consistent compression levels due to fluctuations in limb girth, leading to reduced effectiveness in treating venous ulcerations and lymphedema.
Innovation Solution
A modular compression garment system with adjustable bands providing graduated compression through varying levels of elasticity, overlap, length, and width, allowing users to easily apply consistent therapeutic compression levels without pressure sensors, and featuring a semi-compressible liner to reduce sub-bandage pressure on sensitive areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a non-elastic compression boot (Unna boot) is used to provide baseline compression, then compression is applied to the limb, but the boot becomes loose as edema reduces and cannot conform to different size limbs
Solution Approach 1:
The patent applies the dynamics principle by incorporating elastic bands that can dynamically adjust to limb size changes. The elastic bands replace the static non-elastic structure, allowing the compression garment to adapt its compression characteristics as edema fluctuates and limb girth changes, thereby maintaining effective compression while conforming to different limb sizes.
Solution Approach 2:
The patent applies parameter changes by using elastic materials with specific elasticity parameters (stretch percentage, recovery force) that allow the garment to maintain appropriate compression levels across varying limb circumferences. The elastic bands are designed with specific mechanical properties that enable them to stretch and recover, providing consistent compression despite changes in limb size due to edema.
2Adaptability or versatility
If elastic bands are used to provide compression, then the garment can adapt to limb size changes, but there is risk of too much compression cutting off circulation and difficulty in measuring pressure levels
Solution Approach 1:
The patent applies local quality by providing different levels of compression at different locations along the limb. The elastic bands are strategically positioned and sized to provide graduated compression, with higher compression distally and lower compression proximally. This localized approach ensures adequate compression for edema control while avoiding excessive compression that could compromise circulation in specific areas.
Solution Approach 2:
The patent incorporates feedback mechanisms through visual indicators or pressure sensors that provide real-time information about compression levels. This feedback allows users to monitor whether the compression is within the therapeutic range and adjust the garment application accordingly, preventing both insufficient and excessive compression while maintaining adaptability to limb size changes.
3Stress or pressure
If traditional compression stockings are used to provide graduated compression, then compression is applied to the limb, but they are difficult to don and doff and require precise fitting
Solution Approach 1:
The patent applies segmentation by dividing the compression garment into separate modular components, including detachable elastic bands that can be independently applied and removed. This modular design allows users to don and doff the compression garment in simpler, more manageable steps compared to traditional one-piece stockings, while still achieving the desired graduated compression through the segmented band structure.
Solution Approach 2:
The patent uses dynamic elastic bands that can be easily stretched and secured, providing a more user-friendly application process. The elastic nature of the bands allows them to be pulled on over the limb and then snap into place, making donning and doffing simpler while maintaining the graduated compression profile through strategic placement of bands at different locations.
4Reliability
If compression is increased to treat severe edema, then edema control improves, but the risk of cutting off circulation increases
Solution Approach 1:
The patent applies parameter changes by using elastic materials with specific mechanical properties (elastic modulus, stretch percentage, recovery force) that enable the garment to provide therapeutic compression without excessive force. The elastic bands are engineered to generate sufficient compression to control edema while automatically reducing pressure on critical structures, thereby maintaining circulation while achieving effective edema management.
Solution Approach 2:
The patent incorporates cushioning elements or pressure-distributing features in the garment design that prevent concentrated pressure on critical structures. These beforehand cushioning features distribute the compression force more evenly across the limb surface, reducing the risk of circulation compromise while maintaining adequate compression for edema control.
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 effectively augments venous and lymphatic flow, maintains consistent compression despite limb girth changes, and is easier to don and doff, providing superior edema control and prevention of venous ulcerations.
Implementation Method 1
Each band has a maximal extension characteristic in the range of about 15-100%. At this maximal extension, the bands are engineered to have a compression level that lies within the range of about 8 mm-50 mm.
Implementation Method 2
Compression to an extremity decreases vein diameter and increases flow velocity, which decreases risk of blood clot formation.
Data Source
AI summary
A method of selecting and using a compression garment is disclosed. The method may include selecting a garment comprising a compression sleeve including a proximal end and a distal end. The compression sleeve may comprise material having one of short-stretch function and inelastic function. The method may include donning the garment by inserting a limb of an animal or human through an opening in the proximal end and positioning the compression sleeve such that the material extends over at least a portion of a muscle mass of the limb. When the muscle mass is activated, the compression sleeve may augment the venous muscle return produced by the muscle mass.