Method and apparatus for dermatological hypopigmentation
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Solution Overview
Problem
Current cosmetic methods for lightening skin tone due to hyperpigmentation are often ineffective and may result in noticeable depigmented spots, lacking controlled and gradual lightening solutions.
Innovation Solution
A cryogenic apparatus with protrusions made of high thermal capacity materials, designed for controlled cooling or freezing of small skin regions, utilizing a combination of materials like brass, copper, or diamond, and a refrigerant system for efficient heat transfer, allowing for localized hypopigmentation without visible spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If topical cosmetic formulations are used to lighten hyperpigmented skin, then skin lightening may be achieved, but the effectiveness is questionable and may result in noticeable depigmented spots
Solution Approach 1:
The treatment area is divided into multiple small discrete zones that are individually frozen by separate protrusions. This segmentation allows controlled hypopigmentation of specific hyperpigmented areas while preserving surrounding normal skin, avoiding large uniform depigmented patches and achieving more reliable cosmetic results
Solution Approach 2:
Different regions of skin receive different treatments: hyperpigmented areas are targeted for freezing and hypopigmentation, while surrounding normal skin is preserved. The protrusions are positioned to contact only the hyperpigmented regions, creating locally differentiated outcomes that improve overall effectiveness and uniformity
2Duration of action of stationary object
If cryogenic techniques are used to achieve hypopigmentation, then permanent lightening can be obtained, but the process may create visible depigmented spots
Solution Approach 1:
The skin surface is treated with multiple small discrete frozen zones rather than large continuous areas. By dividing the treatment into many small segments, the resulting hypopigmented spots are too small to be individually visible, yet collectively provide permanent lightening of the overall treated area
Solution Approach 2:
The protrusions are designed to create slightly larger frozen zones than strictly necessary for each hyperpigmented spot, with overlapping margins. This partial excess ensures complete coverage of hyperpigmented areas while the segmentation prevents formation of large visible depigmented patches
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 apparatus achieves gradual and permanent lightening of skin areas by inhibiting melanin production, providing a rejuvenating effect and improving skin appearance through fractional cryotherapy, with multiple treatments allowing for further lightening without forming visible depigmented spots.
Implementation Method 1
The distal portion of the protrusions can be formed using a material having a high thermal conductivity, such as diamond, gold, copper, or the like
Implementation Method 2
A refrigerant or other heat-absorbing medium, such as saline solution or water-alcohol solution, can be provided in the reservoir to cool the base and attached protrusions
Implementation Method 3
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
Data Source
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.