Gradient Compression Hosiery Using Core-Spun Yarns
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Solution Overview
Problem
Conventional gradient compression hosiery is difficult to don due to its tight fit and fails to effectively conform to the wearer's leg, lacking ease of application and adequate adaptation to limb shape.
Innovation Solution
The development of gradient compression hosiery using core-spun yarns with an elastomeric core and a twisted fiber sheath, integrated with pre-tensioned elastomeric threads, which provides progressive compression that decreases from the ankle to the thigh, allowing for greater stretch and easier donning while maintaining therapeutic benefits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tight-fitting gradient compression hosiery is used to provide compression, then therapeutic compression is achieved, but the hosiery becomes difficult to don due to high expansion force required
Solution Approach 1:
The patent changes the material parameters by using core-spun yarns with elastomeric cores instead of conventional fibers. This material substitution fundamentally alters the mechanical properties, providing both compression and stretchability without requiring excessive force to don the hosiery while maintaining therapeutic compression levels.
Solution Approach 2:
The patent employs composite construction by combining elastomeric core fibers with natural or synthetic sheath fibers to create core-spun yarns. This composite yarn structure integrates the elasticity needed for compression with the durability and comfort of natural fibers, resolving the contradiction between compression effectiveness and ease of donning.
2Reliability
If conventional tight-fitting gradient compression hosiery is used to provide compression, then compression therapy is delivered, but the hosiery fails to effectively conform to the wearer's leg shape
Solution Approach 1:
The patent changes the material parameters by using core-spun yarns with elastomeric cores instead of conventional fibers. This material substitution fundamentally alters the mechanical properties, providing both compression and stretchability without requiring excessive force to don the hosiery while maintaining therapeutic compression levels.
Solution Approach 2:
The patent introduces dynamic adaptability through the elastomeric core-spun yarns that can dynamically adjust and conform to the unique contours of the wearer's leg. The elastic properties allow the hosiery to adapt to varying leg shapes and sizes while maintaining consistent compression, enhancing both conformity and therapeutic effectiveness.
3Reliability
If conventional hosiery materials are used to achieve compression, then therapeutic benefits are provided, but the hosiery lacks stretchability and comfort
Solution Approach 1:
The patent employs composite construction by combining elastomeric core fibers with natural or synthetic sheath fibers to create core-spun yarns. This composite yarn structure integrates the elasticity needed for compression with the durability and comfort of natural fibers, resolving the contradiction between compression effectiveness and ease of donning.
Solution Approach 2:
The patent changes the material parameters by using core-spun yarns with elastomeric cores instead of conventional fibers. This material substitution fundamentally alters the mechanical properties, providing both compression and stretchability without requiring excessive force to don the hosiery while maintaining therapeutic compression levels.
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 use of core-spun yarns with integrated elastomeric threads enhances the stretchability and comfort of the hosiery, making it easier to put on and providing better conformity to the leg, while maintaining effective compression levels for therapeutic benefits.
Implementation Method 1
The stretch yarn comprises a core-spun yarn that includes an elastomeric core and a twisted fiber sheath
Implementation Method 2
The stocking section includes elastomeric threads integrated into the stretch yarn knitting, with the foot portion and leg portion being configured to be undersized relative to the foot and leg of the wearer
Data Source
AI summary
A gradient compression article with therapeutic and aesthetic properties broadly includes a limb-receiving section extending continuously between a distal end and an open proximal end thereof. The limb-receiving section includes a tubular distal portion and a tubular proximal portion. The limb-receiving section is knitted at least substantially of a core-spun yarn with an elastomeric core and a twisted fiber sheath and includes elastomeric threads integrated into the stretch yarn knitting. The limb-receiving section further presents a gradient region that extends from a distal location adjacent the distal end to a proximal location adjacent the proximal end, with a property of the article changing progressively along the gradient region to provide compression that decreases progressively from the distal location to the proximal location when the article is donned.