Method and apparatus for cryogenic treatment of skin tissue
US11590022B2 · kind B2 · utility
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20References
29Claims
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Key dates
| Filing date | Dec 4, 2017 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Jul 10, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2007/0095
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Cosmetic method and apparatus are provided that can provide cooling and/or freezing of skin tissue proximal to the skin surface to generate an appearance of lightening or reduced pigmentation in the skin. The skin can be cooled to a temperature of less than about −5 degrees Celsius for a duration of about one minute or less, using a cooled surface that is at least 3 cm in width. A cooling arrangement can be provided to provide controlled heat removal from the skin tissue being treated. A sensor can optionally be provided to detect freezing of tissue proximal to the cooled surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.