Elastic Plastic Strip Nail Correction Device
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Solution Overview
Problem
Existing nail correction devices face challenges with handling quick-acting adhesives that can cause fingers to stick together and are uncomfortable to wear, especially when putting on or taking off shoes, and are often complex and expensive.
Innovation Solution
A longitudinally elastic plastic strip with hooks at both ends that can be stretched to fit around a nail, providing an adjustable restoring force without the need for adhesives, manufactured using a two-component injection molding process for a strong connection, allowing for easy application and reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If quick-acting adhesives are used to attach correction strips to the nail, then the adhesive strength and effectiveness of the device is improved, but the handling becomes difficult and dangerous as fingers may stick together
Solution Approach 1:
The invention extracts and removes the adhesive component entirely from the nail correction device. Instead of using quick-acting adhesives that cause handling difficulties and safety issues, the device relies on mechanical attachment through hooks that engage with the nail structure, eliminating the harmful adhesive while maintaining effective attachment.
Solution Approach 2:
The invention introduces hooks as an intermediary attachment mechanism between the correction strip and the nail. These hooks provide a mechanical connection alternative to adhesives, allowing the strip to be securely attached to the nail without requiring chemical bonding agents that create handling problems.
2Force
If metal devices with clamping screws are used for nail correction, then the clamping force and correction effectiveness is improved, but the wearing comfort deteriorates due to the voluminous structure
Solution Approach 1:
The invention uses a flexible plastic strip instead of rigid metal structures with clamping screws. The plastic strip can be stretched and conforms to the nail shape, providing correction force through elastic recovery rather than mechanical clamping. This flexible approach eliminates the need for voluminous clamping components and significantly improves wearing comfort under shoes and stockings.
Solution Approach 2:
The invention changes the physical parameters of the correction device by using a stretchable plastic material with specific elastic properties. The strip can be stretched to fit around the nail and then exerts a gentle, distributed restoring force as it returns to its original shape, replacing the high localized clamping force of metal devices with a more comfortable distributed elastic force.
3Force
If metal devices with clamping screws are used for nail correction, then the clamping force and correction effectiveness is improved, but the device complexity and cost increase
Solution Approach 1:
The invention segments the correction device into simple functional components: a continuous plastic strip with integrated hooks at the ends. This segmented approach replaces the complex assembly of metal plates, screws, and adjustment mechanisms with a single integrated plastic component that achieves correction through elastic deformation rather than mechanical clamping.
Solution Approach 2:
The invention employs a disposable plastic strip design that is inexpensive to manufacture and use. Rather than requiring durable, adjustable metal devices with moving parts, the plastic strip is a simple, low-cost component that can be easily replaced if needed, significantly reducing both device complexity and cost while maintaining effective correction capability.
4Force
If the plastic strip is made very elastic to provide strong restoring force, then the correction effectiveness is improved, but the hooks become less stable and difficult to attach
Solution Approach 1:
The invention applies local quality by using different plastic materials with different properties for different parts of the device. The main strip uses a very elastic plastic to provide strong restoring force, while the hooks use a harder, more dimensionally stable plastic to ensure stable attachment to the nail. This local differentiation of material properties allows both strong correction force and stable hook attachment to coexist.
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 device is simple to handle and manufacture, provides effective nail correction without adhesives, and automatically adapts to changing nail curvature, offering improved comfort and reduced complexity and cost.
Implementation Method 1
The plastic strip is elastic and longitudinally elastic and has a hook on each of its two longitudinal ends... the plastic strip being stretchable and, when the hook is hooked, extending in its length can be adapted to a nail width of the nail to be corrected, so that an elasticity-related restoring force brings about a righting force
Data Source
Figure 1~4
AI summary
A device for carrying out nail corrections, particularly for ingrown, extremely curved nails, comprises at least one plastic strip (2) extending in a longitudinal direction (5). The plastic strip (2) is rubbery and longitudinally elastic and comprises at each longitudinal end a hook (4) for surrounding and engaging under the nail edge of the toe nail to be corrected. The plastic strip (2) is ductile and can be adapted lengthwise to a nail width of the nail to be corrected when the hook (4) is hooked such that a restoring force caused by the elasticity brings about an upward force automatically adapted to the degree of curvature of the nail to be corrected.