Method and apparatus for dermatological hypopigmentation
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Solution Overview
Problem
Current cosmetic methods for lightening skin tone or reducing hyperpigmentation are often ineffective and may result in noticeable depigmented spots, lacking controlled and gradual solutions for addressing excess skin pigmentation.
Innovation Solution
A cosmetic method utilizing a cryogenic apparatus with protrusions made of high thermal capacity materials, designed to cool or freeze small skin regions, achieving localized hypopigmentation through fractional cryotherapy, which can be repeated for gradual and controlled lightening without visible depigmentation spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If topical cosmetic formulations are used to lighten skin, then lightening of hyperpigmented areas is claimed, but effectiveness is questionable and results are not reliable
Solution Approach 1:
The patent replaces chemical formulations with a physical mechanism (cryogenic cooling) to achieve hypopigmentation. The mechanical cooling system using protrusions that contact the skin directly substitutes for ineffective topical chemicals, providing reliable and controllable lightening results through physical temperature reduction rather than chemical action.
Solution Approach 2:
The invention changes the temperature parameter of the skin by applying controlled cooling through cryogenic protrusions. By reducing skin temperature to subzero levels locally, the treatment induces hypopigmentation through temperature-dependent inhibition of melanin production, offering reliable and predictable results compared to variable chemical formulations.
2Reliability
If strong cooling or freezing is applied to achieve hypopigmentation, then lightening effect is achieved, but visible depigmented spots may form
Solution Approach 1:
The skin treatment area is divided into multiple small discrete zones corresponding to individual protrusions. Each protrusion creates a small isolated hypopigmented spot, and the collective effect of many small spots blends together to produce uniform lightening without visible individual depigmented areas, resolving the contradiction between effective treatment and cosmetic appearance.
Solution Approach 2:
Different regions of the skin receive differentiated treatment through the array of protrusions, with each protrusion creating a localized hypopigmented zone. The varying density and distribution of protrusions allow customization of treatment intensity in different areas, achieving overall uniform lightening while maintaining natural skin appearance without obvious spot patterns.
3Manufacturing precision
If multiple treatment sessions are used to achieve gradual lightening, then controlled results are obtained, but treatment time increases
Solution Approach 1:
The treatment employs periodic application of cooling through repeated treatment sessions at scheduled intervals. This periodic cryogenic stimulation allows controlled gradual lightening as melanin production is cyclically inhibited, enabling precise control over the degree of hypopigmentation while managing total treatment time through optimized session frequency and duration.
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 method provides a gradual and permanent lightening of skin areas by inhibiting melanin production, reducing the appearance of hyperpigmentation, and promoting a rejuvenating effect on the skin without forming visible depigmented spots, allowing for multiple treatments to achieve desired results.
Implementation Method 1
The protrusions can be made at least partially of a metal or alloy, such as brass, gold, copper, or the like, diamond or diamondlike carbon, a frozen material, or another material that can preferably exhibit a high heat capacity
Implementation Method 2
cooling or freezing small regions of skin to produce a lightening of the skin appearance
Implementation Method 3
protrusions having a large thermal capacity... materials that can preferably exhibit a high heat capacity
Data Source
Figure 1~2
Figure 3A~3B
Figure 4A~4B
AI summary
Exemplary embodiments of the present disclosure provide method and apparatus for effecting (e.g., lightening) an appearance of skin by cooling or freezing small separated surface regions of the skin to produce regions of local hypopigmentation. The width of the regions can be, for example, smaller than about 1 mm or 0.5 mm, and a distance between these frozen regions can be greater than about 3 times the width of the regions. An exemplary apparatus can be provided that includes a plurality of spatially-separated thermally conductive arrangements that can be affixed or otherwise coupled to a base. For example, the conductive arrangements can be regions of conductive material provided in or proximal to a thermal insulator, or thermally conductive protrusions affixed to the base. The conductive arrangements can be cooled and then contacted with the skin surface to produce the small regions of hypopigmentation.