Elastic Hooking Surface for Compression Fastening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing compression devices, such as bandages and orthoses, often fail to provide a consistent and sufficient level of tightness, leading to ineffective treatment due to variable and irregular application, which is difficult for patients to apply correctly and requires complex and expensive manufacturing processes.
Innovation Solution
A compression device with a dual-state fastening system using elastic fabric with densely packed hooks that become operational only when stretched, allowing for precise control over tightness and simplifying application and manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hook-and-loop fastening system is used to secure the compression device, then the device can be attached to the body part, but the hooks are too dense in the unstretched state and cannot properly engage with loops
Solution Approach 1:
The hook density is made dynamic through the elastic substrate. When the bandage is wrapped and tension is applied, the elastic substrate stretches, automatically reducing hook density and enabling proper loop engagement. This dynamic adjustment eliminates the need for manual density control while ensuring reliable fastening only when proper tension is applied.
Solution Approach 2:
The physical state of the hook-and-loop interface changes based on substrate tension. In the unstretched state, hooks are densely packed and non-functional. When stretched during proper application, the hook spacing increases to enable functional engagement with loops, providing a built-in mechanism to verify correct application tension.
2Ease of operation
If the hook density is reduced to enable proper fastening, then hooks can engage with loops, but the compression level becomes insufficient for therapeutic efficacy
Solution Approach 1:
The system dynamically adjusts hook density based on tension level. High tension during application stretches the substrate, spacing hooks apart for easy engagement. Once secured, the elastic substrate's recoil maintains therapeutic compression while hooks remain engaged, providing both ease of application and therapeutic efficacy.
Solution Approach 2:
The hook spacing parameter changes with substrate tension. During application, stretched substrate provides large hook spacing for easy fastening. In the compressed state, the elastic substrate maintains tension that preserves both the fastening engagement and the necessary compression pressure for therapy.
3Reliability
If molded hooks are used to ensure proper spacing, then fastening reliability improves, but manufacturing complexity and cost increase
Solution Approach 1:
The patent uses simple, inexpensive metal hooks attached to elastic substrate instead of complex molded hooks. The hooks are basic U-shaped wires that are cheap to manufacture and attach, eliminating the need for complex molding processes while providing sufficient fastening reliability through the elastic substrate's tension control.
Solution Approach 2:
Instead of controlling hook spacing through complex molded shapes, the patent uses the elastic substrate's physical properties to dynamically control effective hook spacing. This simple approach reduces manufacturing complexity while maintaining fastening reliability through tension-dependent hook engagement.
4Stress or pressure
If the bandage is wrapped with high tension to ensure therapeutic compression, then compression efficacy improves, but it becomes difficult for patients to simultaneously tighten, wrap, and secure the bandage
Solution Approach 1:
The elastic substrate provides dynamic feedback during application. As the patient wraps the bandage, the substrate stretches and automatically spaces hooks for engagement. The progressive tension buildup is naturally indicated by the ease of hook engagement, guiding the patient to achieve proper compression without requiring simultaneous coordination of multiple actions.
Solution Approach 2:
The hook-and-loop engagement provides tactile feedback to the patient during application. When proper tension is achieved, hooks successfully engage with loops, giving the patient immediate feedback that correct compression has been applied. This feedback mechanism simplifies the application process by eliminating the need to coordinate multiple actions simultaneously.
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
Ensures a consistent and sufficient level of tightness for therapeutic efficacy, is easy to apply, and reduces manufacturing complexity and cost, providing a comfortable and ergonomic solution.
Implementation Method 1
said hooking surface being elastic and capable of adopting at least two distinct states: a first state, in which said hooking surface is unstretched... a second state, in which said hooking surface is stretched
Data Source
Figure 1a~3
Figure 4a~4e
Figure 5~8b
AI summary
Body compression device (2) intended to be at least partially wound around a part of the body in order to exert a compression force on said part of the body, said device comprising a hook-and-loop fastening system (3) with a plurality of loops (11) arranged on a loop zone (10) and a plurality of hooks (21) arranged on a hooking surface (20), said hooking surface (20) being elastic and capable of adopting at least two states: - a first, unstretched state, in which the hooks (21) are in immediate proximity to one another, and - a second state, in which said hooking surface (20) is substantially stretched, allowing it to be hooked onto the loops (11) of the loop zone (10).