Method and apparatus for skin treatment

• US 9,814,906 B2
• Filed: 04/22/2015
• Issued: 11/14/2017
• Est. Priority Date: 11/30/1998
• Status: Expired due to Fees

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: McDaniel, David H.
• Primary Examiner(s): FARAH, AHMED M
• Application Number:
  US14/693,369
• Publication Number:
  US 20150328478A1
• Time in Patent Office: 937 Days
• Field of Search: 607 88- 91, 607 93, 607 96, 607100, 606 3, 606 8, 606 9- 12, 128898
• CPC Class Codes: A61B 18/203 applying laser energy to the outside of the body
• CPC Class Codes: A61B 2017/00765 Decreasing the barrier function of skin tissue by radiated energy, e.g. using ultrasound, using laser for skin perforation
• CPC Class Codes: A61B 2017/22085 light-absorbing A61B2017/22087 takes precedence
• CPC Class Codes: A61B 2018/00452 Skin
• CPC Class Codes: A61B 2018/00476 Hair follicles
• CPC Class Codes: A61B 2018/1807 using light other than laser radiation
• CPC Class Codes: A61K 41/0057 Photodynamic therapy with a photosensitizer, i.e. agent able to produce reactive oxygen species upon exposure to light or radiation, e.g. UV or visible light; photocleavage of nucleic acids with an agent
• CPC Class Codes: A61K 41/0071 PDT with porphyrins having exactly 20 ring atoms, i.e. based on the non-expanded tetrapyrrolic ring system, e.g. bacteriochlorin, chlorin-e6, or phthalocyanines
• CPC Class Codes: A61N 2005/0651 Diodes
• CPC Class Codes: A61N 2005/0652 Arrays of diodes
• CPC Class Codes: A61N 2005/0659 infrared
• CPC Class Codes: A61N 5/0616 Skin treatment other than tanning
• CPC Class Codes: A61N 5/0617 Hair treatment
• CPC Class Codes: A61N 5/062 Photodynamic therapy, i.e. excitation of an agent
• CPC Class Codes: A61N 5/067 using laser light
• CPC Class Codes: A61P 17/10 Anti-acne agents

Abstract

Disclosed is a system and method for treatment of skin disorders. More particularly, the disclosed invention is directed toward the use of multiple light sources for treating skin with or without the use of a topical compositions or photomodulation enhancing agents. Dual light emitting diodes may, for example, be used at relatively low power (less than about 10 J/cm2) to photomodulate skin or living tissue to reduce wrinkles, fine lines, acne, acne bacteria, and other skin disorders.

Claims

1. A device for treating skin disorders, comprising:

a first radiation source configured to expose skin to narrowband multichromatic electromagnetic radiation having at least one dominant emissive wavelength between about 300 nm and about 1400 nm and a bandwidth of +/−

at least 5 nm around the dominant emissive wavelength, and

a second radiation source configured to expose the skin to narrowband multichromatic electromagnetic radiation having at least one dominant emissive wavelength between about 300 nm and about 1400 nm and a bandwidth of +/−

at least 5 nm around the dominant emissive wavelength,

wherein the device is configured to expose the skin to the narrowband multichromatic electromagnetic radiation of the first radiation source prior to being exposed to the narrowband multichromatic electromagnetic radiation of the second radiation source.

2. The device of claim 1, wherein the first radiation source is selected from the group consisting of a light emitting diode, a laser diode, a dye laser, metal halide lamps, a flashlamp, a mechanically filtered fluorescent light source, a mechanically filtered incandescent or filamentous light source, or combinations thereof.

3. The device of claim 1, wherein the second radiation source is selected from the group consisting of a light emitting diode, a laser diode, a dye laser, metal halide lamps, a flashlamp, a mechanically filtered fluorescent light source, a mechanically filtered incandescent or filamentous light source, or combinations thereof.

4. The device of claim 1 wherein either, or both, of the first or second radiation source emits infrared radiation.

5. The device of claim 1, wherein the device is configured to deliver a total energy fluence to the living tissue is less than about 10 J/cm².

6. The device of claim 1, wherein the bandwidth of the first and second radiation source is less than or equal to about +/−

100 nm around the dominant emissive wavelength.

7. A device for treating skin disorders, comprising:

a first radiation source that includes at least one light emitting diode and configured to expose skin to narrowband multichromatic electromagnetic radiation having at least one dominant emissive wavelength between about 400 nm and about 700 nm and a bandwidth of +/−

at least 5 nm around the dominant emissive wavelength,

a second radiation source that includes at least one light emitting diode and configured to expose the skin to narrowband multichromatic electromagnetic radiation having at least one dominant emissive wavelength between about 700 nm and about 1400 nm and a bandwidth of +/−

at least 5 nm around the dominant emissive wavelength,

wherein the total energy fluence received by the skin is less than about 10 J/cm²,

wherein the device is configured to expose the skin to the narrowband multichromatic electromagnetic radiation of the first radiation source prior to being exposed to the narrowband multichromatic electromagnetic radiation of the second radiation source.