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US 6,443,946 B2Granted
Apparatus for wrinkle removal
AssigneeICN Photonics Limited
InventorsRobert Marc Clement, Michael Kiernan
Life of this patent
Estimating the term…
Abstract
Wrinkles are cosmetically removed from a superficial area of mammalian skin tissue having an epidermal layer, a basal layer, and a dermal layer, by irradiating the dermal layer through the basal layer, the irradiation being selected to be absorbed by a chromophore in the dermal layer such that collagen present in the dermal layer is heated, while the basal layer remains intact so as to substantially inhibit contact of the dermal layer with ambient air.
Claims11
A method of producing a significant improvement in an area of skin having a dermal layer and a basal layer, comprising:
- providing a source of electromagnetic radiation in a narrow wavelength bandwidth between 570 nm and 600 nm;
- and
- irradiating the dermal layer through the basal layer with the electromagnetic radiation, under a set of conditions that produces the significant improvement without significantly damaging the basal layer, wherein the improvement comprises stimulating the skin to produce collagen and the set conditions include providing the electromagnetic radiation as pulses having a pulse duration of between about 10 μsec and 10 msec, the energy density delivered to the skin being in the range about 0.5 J/cm2 and 5.0 J/cm2 per pulse.
Dependencies are inferred from the claim text.