System and method for the photodynamic treatment of burns, wounds, and related skin disorders

• US 9,144,690 B2
• Filed: 08/31/2009
• Issued: 09/29/2015
• Est. Priority Date: 07/31/2003
• Status: Active Grant

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: McDaniel, David H.
• Primary Examiner(s): Roane, Aaron
• Application Number:
  US12/550,464
• Publication Number:
  US 20100137950A1
• Time in Patent Office: 2,220 Days
• Field of Search: 606 2- 10, 607 88- 91, 128/898
• US Class Current: 1/1
• CPC Class Codes: A61N 2005/0652 Arrays of diodes
• CPC Class Codes: A61N 2005/0659 infrared
• CPC Class Codes: A61N 2005/0662 Visible light
• CPC Class Codes: A61N 2005/0663 Coloured light
• CPC Class Codes: A61N 2005/0667 Filters
• CPC Class Codes: A61N 5/0616 Skin treatment other than tanning

Abstract

A method including photomodulating mammalian tissue with more than one light source of narrowband, multi chromatic electromagnetic radiation, wherein at least one light source emits radiation at a wavelength corresponding to yellow light and at least one light source emits radiation corresponding to infra-red light, wherein the ratio of the intensity of yellow light to infra-red light is about 4:1.

Claims

1. A method, comprising:

photomodulating mammalian tissue with more than one light source of narrowband, multi chromatic electromagnetic radiation,

wherein at least one light source emits radiation at a wavelength corresponding to yellow light and at least one light source emits radiation corresponding to infra-red light, and the yellow light is emitted at a greater intensity than the infra-red light, and

wherein the tissue is exposed to an energy fluence of less than 4 J/cm².

2. The method of claim 1, wherein at least one light source emits radiation having a dominant emissive wavelength of 580 nm to 600 nm and at least one light source emits radiation having a dominant emissive wavelength of 850 nm to 950 nm.

3. The method of claim 2, wherein the at least one light source emits radiation having a dominant emissive wavelength of 590 nm at an energy output of 4 mW/cm² and at least one light source emits radiation having a dominant emissive wavelength of 850 nm at an energy output of 1 mW/cm².

4. The method of claim 1, comprising varying the ratio of infra-red light intensity with respect to yellow light intensity with at least one optical, mechanical, or electrical filter.

5. The method of claim 1, wherein the ratio of the intensity of yellow light to infra-red light is 4:

1.

6. The method of claim 1, wherein the yellow light is emitted simultaneously with the infra-red light.