Light-activated antimicrobial articles and methods of use

• US 8,877,125 B2
• Filed: 06/23/2010
• Issued: 11/04/2014
• Est. Priority Date: 06/30/2009
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Appeaning, Maria A., Belgrade, Sonja K., Weiss, Douglas E., Stepanova, Narina Y., Ylitalo, Caroline M.
• Primary Examiner(s): CONLEY, SEAN EVERETT
• Application Number:
  US13/321,566
• Publication Number:
  US 20120070342A1
• Time in Patent Office: 1,595 Days
• Field of Search: 422/28, 422/243, 442/123
• US Class Current: 422/28
• CPC Class Codes: A61L 2/088 using a photocatalyst or photosensitiser
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: A61L 2209/12 Lighting means
• CPC Class Codes: A61L 9/205 using a photocatalyst or photosensitiser
• CPC Class Codes: Y10T 442/2525 Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]

Abstract

A light-activated antimicrobial article is disclosed, consisting essentially of an acridine dye covalently bonded without a linking group to a nylon material. The article may be made using electron beam processing. The article in combination with light absorbed by the acridine dye may be used to inhibit the growth of microorganisms. A photosensitive nylon material in which the acridine dye is disposed on the nylon material may also be used. Medical kits that include a light source and an article having the acridine dye are disclosed.

Claims

1. A light-activated antimicrobial article consisting essentially of an acridine dye covalently bonded without a linking group to a nylon material, wherein when light is absorbed by the acridine dye, colony forming units of a microorganism exposed to the light-activated antimicrobial article decrease in an amount of from about 90 to 99.99%.

2. The light-activated antimicrobial article of claim 1, wherein the acridine dye is Acridine Yellow G.

3. The light-activated antimicrobial article of claim 1, wherein the nylon material is nonwoven nylon material.

4. A method of making a light-activated antimicrobial article, comprising

providing a photosensitive nylon material consisting essentially of an acridine dye disposed on a nylon material, and

processing the photosensitive nylon material using an electron beam such that the acridine dye is covalently bonded without a linking group to the nylon material.

5. A method for inhibiting the growth of microorganisms, comprising

providing a photosensitive nylon material consisting essentially of an acridine dye disposed on a nylon material,

exposing the photosensitive nylon material to a microorganism,

providing a light source, and

activating the light source such that light emitted by the light source is absorbed by the acridine dye and colony forming units of the microorganism decrease in an amount of from about 90 to 99.99%.

6. The method of claim 5, wherein the acridine dye in Acridine Yellow G.

7. The method of claim 5, wherein the nylon material is nonwoven nylon material.

8. A method for inhibiting the growth of microorganisms, comprising

providing a light-activated antimicrobial article comprising an acridine dye covalently bonded without a linking group to a nylon material,

exposing the light-activated antimicrobial article to a microorganism,

providing a light source, and

activating the light source such that light emitted by the light source is absorbed by the acridine dye and colony forming units of the microorganism decrease in an amount of from about 90 to 99.99%.

9. The method of claim 8, wherein the acridine dye is Acridine Yellow G.

10. The method of claim 8, wherein the nylon material is nonwoven nylon material.

11. A medical kit comprising:

a light source, and

a light-activated antimicrobial article consisting essentially of an acridine dye covalently bonded without a linking group to a nylon material, wherein when light is absorbed by the acridine dye, colony forming units of a microorganism exposed to the light-activated antimicrobial article decrease in an amount of from about 90 to 99.99%.