Cuboid Inserts for Fall Prevention
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Solution Overview
Problem
Existing textured insoles fail to effectively enhance balance and prevent falls in seniors due to uniform stimulation of cutaneous receptors, which can lead to adverse muscular responses and increased fall risk, as the sensitivity of these receptors declines with age.
Innovation Solution
The development of cuboid inserts with domes or balance buttons that selectively stimulate Meissner's and Merkel receptors along the lateral edge of the midfoot, providing a reflexive response to prevent lateral falls and promoting a wider, more stable gait by using an elastomeric pad with specific dome configurations and a pressure-sensitive adhesive for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform textured insoles are used to stimulate cutaneous receptors, then balance improvement is attempted, but adverse muscular responses occur and fall risk increases
Solution Approach 1:
The patent applies local quality by placing textured elements (domes, nodules, or protrusions) only at specific locations on the insole corresponding to the lateral midfoot and lateral forefoot, rather than uniformly across the entire insole. This localized texturing stimulates cutaneous receptors in these specific areas to trigger beneficial muscular responses without causing adverse effects from uniform stimulation.
Solution Approach 2:
The patent segments the insole surface into distinct zones with different texturing characteristics. The lateral midfoot and lateral forefoot regions receive textured elements, while other areas remain smooth or have different patterns. This segmentation allows selective stimulation of specific cutaneous receptor populations to elicit targeted muscular responses for fall prevention.
2Reliability
If textured insoles with elevations are used to stimulate cutaneous receptors, then balance enhancement is attempted, but the uniform stimulation pattern fails to account for age-related receptor sensitivity decline
Solution Approach 1:
The patent addresses age-related receptor sensitivity decline by concentrating texturing in areas with high receptor density (lateral midfoot and lateral forefoot), where Meissner's and Merkel receptors are most abundant. This localized approach ensures that the limited texturing effort produces the maximum possible sensory input in the most sensitive regions, compensating for overall age-related sensitivity loss.
Data Source
AI summary
Unique pads, called cuboid lifts, cuboid inserts, or balance-enhancing textured insoles, prevent falls and improve balance by producing site-specific stimulation of different types of cutaneous receptors located along the outer sides of the foot. These cutaneous receptors play a key role in maintaining balance. The outer placement also makes them important in preventing lateral falls, which are far and away the most likely to result in injury. Domes on the upper side of the cuboid inserts increase feedback from the cutaneous receptors as the center of pressure of the person wearing the cuboid inserts moves too far to the outer side of the midfoot. These cuboid inserts are also helpful when managing ankle sprains, as this common injury frequently results in impaired balance.