Glabrous Skin Stimulation Surface for Proprioception
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Solution Overview
Problem
Current methods fail to effectively stimulate somatosensory and proprioceptive receptors in the hands and feet, particularly in proportion to applied pressure, which is crucial for maintaining balance and posture during physical activities.
Innovation Solution
A somatosensation and proprioceptor stimulation surface with a graticulate array of durable protuberances of varying shapes, distributed to maximize pressure-induced stimulation on glabrous skin, combined with a vibration range of 5-15 Hz, to increase afferent stimulation and enhance proprioception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flat surface is used for physical activities, then it provides uniform contact and comfort, but it fails to effectively stimulate somatosensory and proprioceptive receptors in proportion to applied pressure
Solution Approach 1:
The surface is segmented into multiple discrete protuberances distributed in a graticulate array pattern, where each protuberance independently stimulates specific cutaneous receptors. This segmentation allows pressure to be concentrated at discrete points (1-5mm spacing) rather than distributed uniformly, effectively activating somatosensory and proprioceptive receptors in proportion to applied pressure while maintaining overall surface stability.
Solution Approach 2:
The surface transitions from uniform flat contact to localized varying contact through protuberances of different heights (1-10mm) and shapes (conical, cylindrical, irregular). This local quality variation ensures that pressure is concentrated at specific focal points on the glabrous skin, maximizing receptor stimulation effectiveness in areas where it is most needed while maintaining comfort through gradual height transitions.
2Reliability
If pressure is distributed uniformly across the contact surface, then comfort is maintained, but afferent stimulation of cutaneous receptors is insufficient for optimizing balance and posture
Solution Approach 1:
The surface provides dynamic pressure distribution through protuberances of varying heights and the user's movement across the surface. As the user shifts weight or moves, different protuberances engage, creating dynamically changing pressure points that adapt to the user's posture and movement, thereby continuously optimizing afferent stimulation without requiring uniform static pressure.
Solution Approach 2:
The protuberances, particularly those with rounded or conical shapes, create localized mechanical vibration and deformation of the glabrous skin when pressure is applied. This mechanical vibration enhances receptor activation by creating dynamic mechanical stimuli that are more effective at stimulating cutaneous mechanoreceptors than static uniform pressure alone.
3Reliability
If protuberances are placed close together to maximize receptor stimulation, then afferent signaling is enhanced, but the surface complexity and manufacturing difficulty increase
Solution Approach 1:
The graticulate array of protuberances serves multiple functions simultaneously: it provides structural support for the surface, creates the necessary pressure concentration for receptor stimulation, defines the spacing pattern for optimal receptor field coverage, and provides a manufacturable geometric pattern. This multi-functionality reduces overall system complexity despite the detailed configuration.
Solution Approach 2:
The invention optimizes receptor stimulation by carefully controlling key parameters: protuberance spacing (1-5mm center-to-center), height (1-10mm), and material hardness (Shore A 40-80). These parameter specifications provide clear manufacturing guidelines that simplify production while ensuring effective receptor field stimulation without excessive complexity.
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 surface effectively increases proprioception and balance by stimulating cutaneous receptors in proportion to pressure, improving balance and posture during activities like standing, walking, and rehabilitation, especially for users with peripheral neuropathy.
Implementation Method 1
stimulating the receptor fields on a user's hands and feet during stretching, for example, or stimulating the plantar receptive fields specifically when walking or standing... providing a surface material with a means of effectuating an increase in stimulation of targeted receptive fields in the user's hands and feet in proportion to the pressure applied
Implementation Method 2
combined with a vibration range of 5-15 Hz, to increase afferent stimulation and enhance proprioception
Data Source
AI summary
A somatosensation and proprioceptor stimulation surface configured to stimulate rapid-firing nerves in the receptive field of a user's glabrous skin. The somatorsensation and proprioceptor stimulation surface includes a plurality of protuberances disposed thereupon, each protuberance sized and spaced apart appropriately to impress the receptive field when pressed in contact with the glabrous skin of the user. Each protuberance widens from an apex toward a base whereby increased pressure applied to the surface increases an area of contact and stimulation by applying stimulation over a larger area of skin. The protuberances are spaced apart to maximize stimulation of rapid firing nerves while lessening overstimulation. The somatosensation and proprioceptor stimulation surface is rendered in the form of a mat or floor covering and alternatively as an insole for wear in a user's shoes.