Cryogenic Applicator with Rotating Head for Skin Rejuvenation
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Solution Overview
Problem
Existing skin rejuvenation methods using cryogenic liquids are inefficient in providing quick, even, and smooth application, often requiring lengthy procedures and potentially causing damage to the skin.
Innovation Solution
A hand-held cryogenic applicator with a rotatably mounted head and biocompatible non-toxic cryogenic fluid interface that quickly and evenly applies the cryogenic fluid onto the skin, allowing for rapid rejuvenation without prolonged contact or damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid nitrogen is applied to skin for wart removal, then the wart is effectively frozen and removed, but the treatment requires substantial time and may cause damage to surrounding skin
Solution Approach 1:
The patent changes the temperature parameter by using a cryogenic liquid with a higher boiling point than liquid nitrogen (such as a hydrofluorocarbon with boiling point around -50°F to -100°F). This allows for effective tissue freezing while reducing treatment time and minimizing damage to surrounding skin, as the cryogenic liquid evaporates more quickly than liquid nitrogen
Solution Approach 2:
The patent employs periodic application of cryogenic liquid through a spray mechanism that delivers controlled bursts of cooling. This periodic action allows the tissue to be frozen effectively while preventing excessive cooling that would damage surrounding areas, and the quick evaporation cycle reduces overall treatment time
2Manufacturing precision
If liquid nitrogen is used for skin rejuvenation, then deep wrinkles and lesions can be treated, but the procedure is lengthy and requires prolonged skin contact
Solution Approach 1:
The patent modifies the thermal parameters by using a cryogenic liquid with controlled evaporation characteristics. The liquid is formulated to provide sufficient cooling depth for treating deep wrinkles and lesions while evaporating quickly enough to limit skin contact time, achieving both deep treatment and reduced duration
Solution Approach 2:
The patent uses a spray delivery system that utilizes pneumatic or hydraulic principles to atomize and distribute the cryogenic liquid evenly across the treatment area. This ensures deep penetration of cooling effect while the rapid evaporation and controlled application minimize prolonged skin contact
3Reliability
If cryogenic liquid is applied to freeze skin lesions, then effective treatment is achieved, but skin damage and need for local anesthetics may occur
Solution Approach 1:
The patent changes the chemical and thermal parameters by using a biocompatible cryogenic liquid (such as a hydrofluorocarbon) that is less harsh than liquid nitrogen. This liquid provides effective freezing for lesion treatment while being gentler on surrounding skin, reducing damage and eliminating the need for local anesthetics
Solution Approach 2:
The patent converts the potentially harmful effect of extreme cold by using a cryogenic liquid with moderate cooling power that still achieves effective lesion freezing but with reduced risk of skin damage. The quick evaporation also benefits by limiting exposure time, turning what could be a harmful prolonged exposure into a beneficial brief treatment
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 applicator effectively reduces wrinkles, lesions, and discolorations in a short time, minimizing skin damage and eliminating the need for local anesthetics, while being economical, durable, and easy to use.
Implementation Method 1
it is apparent that numerous innovations for skin treatments have been provided in the prior art. Even though these innovations each may be suitable for a specific purpose to which it is addressed, the innovations would not be suitable, either individually or collectively, for the purposes of the present invention as hereafter described.
Implementation Method 2
United States Patent Number 5,330, 745 to McDow. United States Patent Number 5,330,745 issued to McDow on July 19, 1994 and it teaches a method for cryogenically treating a skin lesion employing a hollow fluid retaining device for retaining cryogenic refrigerant in a liquid pool, and then contacting the area of the skin lesion at a temperature and for a time, so that permanent, irreversible rupture of the cellular membrane of the lesion cells occurs.
Data Source
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AI summary
A cryogenic applicator for rejuvenating skin and a treatment for use of the applicator. A barrel is hand-held. A head is rotatably mounted to the barrel. A cryogenic interface fluidly connects the barrel to a source of a biocompatible non-toxic cryogenic fluid to supply the cryogenic fluid through the barrel to the head that in turn sparges the cryogenic fluid onto the skin quickly, evenly, and smoothly when the head is rolled on the skin, and thereby rejuvenate the skin. The treatment includes the step of rolling the head quickly, smoothly, and evenly over the skin being treated for a period of time in an order of hundredths or tenths of a second, and sparging the cryogenic fluid onto the skin quickly, evenly, and smoothly when the head is rolled on the skin, and thereby rejuvenate the skin.