Razor Head with Microneedle Roller for Low-Friction Treatment
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Solution Overview
Problem
Existing razor technologies lack a synergistic combination of shaving and cosmetic/therapeutic functions, particularly in enhancing skin regeneration and delivery of agents through microneedling, while minimizing friction and ensuring regularity of treatment.
Innovation Solution
A razor head with integrated microneedles, either solid or hollow, adjacent to shaving blades, for concurrent skin penetration and agent delivery, along with an adjustable roller for depth control and a refillable reservoir for skin care agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If microneedles are integrated into the razor head for cosmetic treatment, then skin regeneration and agent delivery are enhanced, but device complexity increases
Solution Approach 1:
The patent combines shaving blades and microneedles into a single integrated roller assembly, allowing both functions to be performed simultaneously during a single pass over the skin. This merging approach enhances versatility while managing complexity through unified design
Solution Approach 2:
The roller assembly serves multiple functions: it acts as both a shaving blade carrier and a microneedle delivery system. The same rotational mechanism that enables blade movement also enables microneedle penetration, allowing one component to fulfill multiple roles
2Adaptability or versatility
If microneedles are used for skin penetration, then cosmetic agent delivery is improved, but friction during shaving increases
Solution Approach 1:
The microneedles operate periodically during the rolling motion, penetrating the skin only at specific intervals when the roller rotates to the appropriate position. This periodic action minimizes continuous friction while maintaining effective agent delivery at key moments
Solution Approach 2:
The roller assembly is designed to rotate dynamically, allowing the microneedles to engage and disengage from the skin surface during rotation. This dynamic operation reduces static friction and allows smooth gliding between penetration events
3Productivity
If microneedle penetration depth is increased for better treatment效果, then skin regeneration is enhanced, but risk of reaching nerve endings increases
Solution Approach 1:
The patent employs microneedles with precisely controlled lengths (0.25-0.5mm) and tip thicknesses (1-25μm), optimizing the penetration parameters to achieve effective skin regeneration while staying below the depth of nerve endings in the stratum basale and dermis
Solution Approach 2:
The microneedles are designed with varying local properties: extremely fine tip thickness for precise penetration control, specific length for optimal depth, and controlled surface density (below 20-100 microneedles/mm²) to distribute penetration points evenly, ensuring effective treatment without excessive depth in any single location
Data Source
AI summary
The present disclosure concerns a razor head comprising one or more shaving blades and a roller. The roller is adjacent to the shaving blades and includes a plurality of microneedles. A method for skin treatment using this razor head includes a microneedling step with the roller, wherein the microneedles penetrate under the stratum corneum.