Perforated Metatarsal Guard for Impact Absorption
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Solution Overview
Problem
Existing metatarsal and foot protection devices are often rigid, leading to restricted movement and discomfort, as well as inadequate shock absorption, which can result in injury from impact due to the transmission of force through the device.
Innovation Solution
A wearable protective device with a flexible section featuring a pattern of perforations, expansion regions, and a contraction region, allowing for expansion and contraction to absorb pressure and maintain rigidity upon impact, while being anatomically contoured and lightweight to enhance comfort and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid protective device is used, then protection against impact is improved, but flexibility and comfort are worsened
Solution Approach 1:
The protective device is divided into multiple sections with different rigidity characteristics. The forefoot section includes a rigid metatarsal guard while the heel and midfoot sections have reduced rigidity, allowing natural foot movement while protecting the metatarsal area during impact events.
Solution Approach 2:
Different regions of the protective device have different mechanical properties. The metatarsal guard portion is rigid to provide impact protection, while other portions are made more flexible to accommodate natural foot deformation and movement, creating localized zones of different stiffness.
2Strength
If a rigid protective device is used, then impact protection is improved, but shock absorption is worsened
Solution Approach 1:
The device incorporates cushioning elements and flexible sections that are designed to absorb impact energy before it reaches the foot. The progressive collapse mechanism allows the structure to deform in a controlled manner, dissipating energy through material deformation rather than transmitting it directly to the user.
3Strength
If protective device rigidity is increased, then protection is improved, but weight is worsened
Solution Approach 1:
The protective device concentrates rigidity only where needed for protection (metatarsal area) rather than making the entire device rigid. This segmented approach allows the device to provide adequate protection while minimizing weight by using flexible materials in non-critical areas.
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 provides improved flexibility and comfort during natural foot movement while maintaining adequate protection against impacts, reducing the risk of injury and enhancing user experience by absorbing shock effectively.
Implementation Method 1
when pressure is applied to the bottom surface of the wearable protective device
Implementation Method 2
the flexible section is configured to allow for expansion and contraction
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A metatarsal guard is provided which is adapted to have improved flexibility while maintaining adequate protection for the metatarsal region of a user's foot. The guard may include a flexible section spanning the width of the guard in a medial-lateral direction and comprising a pattern of perforations extending entirely or partway through the thickness of the metatarsal guard. In some aspects, the pattern of perforations may allow for expansion along the medial and lateral edges of the guard, while resisting deformation caused by outside impact.