Skin Abrader with Rounded Grit Surface for Electrode Prep
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Solution Overview
Problem
Existing skin abrasion tools are inadequate for thorough and safe removal of the stratum corneum layer, often causing scratches or requiring significant pressure and attention, which can lead to incomplete preparation for long-term electrode adhesion and signal conduction.
Innovation Solution
A skin abrasion device with a flat, rounded abrasive surface and a flexible, atraumatic design that distributes pressure evenly, featuring a handle bonded to the support layer for secure grip and minimal user effort, using a grit size of 36-66 µm to effectively remove the stratum corneum without causing injury.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a coarse-textured abrasion tool is used to remove stratum corneum, then the abrasion sensation is heightened for the patient, but the tool creates scratches in the skin rather than evenly removing the outer layer
Solution Approach 1:
The abrasive surface incorporates particles of varying sizes (36-66 µm grit range) distributed across the surface, where smaller particles fill valleys and larger particles remove peaks, creating a self-regulating abrasion process that evenly removes stratum corneum without creating scratches
Solution Approach 2:
The device combines multiple materials with complementary properties: a flexible foam support layer for conformability, a porous layer for fluid distribution, and an abrasive layer with specific grit size range, creating a composite structure that achieves both effective abrasion and skin safety
2Object-affected harmful factors
If pumice-impregnated alcohol wipes are used for skin abrasion, then the skin is abraded without causing unwanted injury, but significant pressure and attention is required for an effective outcome
Solution Approach 1:
The device is formed with a rounded, curved surface that naturally conforms to body contours, allowing the abrasive surface to maintain consistent contact and distribute pressure evenly across the skin without requiring the user to apply significant pressure or maintain precise positioning
Solution Approach 2:
The flexible foam support layer and porous layer allow the device to conform to irregular skin surfaces, maintaining consistent contact and distributing applied pressure evenly across the abrasive surface, reducing the need for significant user pressure while preventing localized skin injury
3Productivity
If the abrasive surface is made flat and rigid for thorough stratum corneum removal, then the abrasion is effective, but the device is difficult to manipulate and requires significant user effort
Solution Approach 1:
The rounded, curved form of the device allows it to conform to body contours and be easily manipulated by the user, while the abrasive surface maintains sufficient contact area with the skin to effectively remove stratum corneum without requiring significant user effort
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 ensures even and thorough removal of the stratum corneum layer, improving electrode adhesion and signal quality while minimizing the risk of scratches or gouges, suitable for both short-term and long-term applications.
Implementation Method 1
the skin is abraded for the removal of the dry layers of stratum corneum
Implementation Method 2
The support layer can be made from a flexible foam material that is resilient to bending
Data Source
Figure 1A~1B
Figure 2A
Figure 2B~2E
AI summary
The present invention relates to devices, methods, and systems for abrading the skin in preparation for attachment of an electrode. In some embodiments, the invention may provide for a simple, low-cost device 120 with a flat, abrading surface that removes the topmost layer of the skin without causing undue injury.