Laser treatment for reducing wrinkles
US6808532B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 15, 2000 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Dec 15, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/0047
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Skin including wrinkles is irradiated with laser radiation having a wavelength between about 525 and 550 nanometers. The irradiation is delivered at a fluence that stimulates wound healing responses without actually inflicting a wound. This promotes deposition of dermal extracellular matrix. Absorption properties of hemoglobin and melanin in the 525 to 550 nanometer wavelength range provide that wound healing response is concentrated close to upper regions of the skin and accordingly close to the location of the wrinkles. The growth of dermal extracellular matrix “bulks-up” irradiated dermal tissue. This makes the depressions or folds of the wrinkles shallower and less apparent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.