Method and apparatus for cryogenic treatment of skin tissue
US9974684B2 · kind B2 · utility
91Cited by
18References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 16, 2012 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Apr 18, 2033 |
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 plurality of cooled contact surfaces, each having a width between about 2 mm and about 20 mm. 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 surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.