Reinforced gel sheeting for scar treatment

• US 5,919,476 A
• Filed: 09/29/1997
• Issued: 07/06/1999
• Est. Priority Date: 09/29/1997
• Status: Expired due to Term

• Current Assignee: PMT Corporation
• Original Assignee: PMT Corporation
• Inventors: Vonderharr, Kevin M., Trinter, Stephen M., Fischer, Reid M.
• Primary Examiner(s): Lankford, Jr., Leon B.
• Assistant Examiner(s): TATE, CHRISTOPHER ROBIN
• Application Number:
  US08/939,623
• Time in Patent Office: 645 Days
• Field of Search: 424/443, 424/445, 424/446, 424/447, 602/42, 602/44, 602/47, 602/48, 602/54, 604/304, 604/308
• US Class Current: 424/443
• CPC Class Codes: A61F 13/0243 characterised by the properties of the skin contacting layer, e.g. air-vapor permeability
• CPC Class Codes: A61L 15/26 Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof A61L15/225 takes precedence
• CPC Class Codes: A61L 15/44 Medicaments
• CPC Class Codes: A61L 2300/30 Compounds of undetermined constitution extracted from natural sources, e.g. Aloe Vera
• CPC Class Codes: A61L 2300/428 Vitamins, e.g. tocopherol, riboflavin
• CPC Class Codes: C08L 83/04 Polysiloxanes

Abstract

A bandage in the form of a reinforced silicone gel sheet for the treatment of scar tissue is disclosed. The bandage consists of a first layer of silicone adapted to adhere to the skin, a second layer of polyester mesh fabric with a plurality of holes therethrough, which contacts the first layer, and a third layer of silicone. The third layer acts as a sealant and an adhesive when applied to the mesh fabric by projecting through the holes in the mesh fabric to seal the second layer and to laminate the second layer between the first layer and the third layer. The sealant effect of the third layer provides a non-adherent surface which enables the bandage to be worn underneath clothing. A method of manufacture is also disclosed.

Claims

1. A bandage for the treatment of scar tissue, comprising:

a) a tacky, skin contacting first layer comprising a generally non-textured, tacky silicone sheet having a predetermined shape and being adapted to adhere to the skin;

b) a reinforcing second layer coextensive of said first layer and comprising a non-liquid permeable mesh fabric support structure having a plurality of holes therethrough, the second layer contacting the first layer; and

c) a non-tacky, bonding third layer coextensive with said first and second layers overlaying and projecting through said holes in the second layer thereby occluding said holes and laminating the third layer to the first layer thereby securing said second layer between said first layer and said third layer.

2. The bandage of claim 1, wherein the first layer has a thickness of about 0.079 inch (2.000 mm).

3. The bandage of claim 2, wherein the second layer has a thickness of about 0.009 inch (0.2286 mm).

4. The bandage of claim 3, wherein the third layer has a thickness of about 0.002 inch (0.0508 mm).

5. The bandage of claim 1, having a thickness of less than about 0.15 inch (3.810 mm).

6. The bandage of claim 1, wherein the second layer comprises polyester that has been heat set to minimize shrinkage.

7. The bandage of claim 1, wherein a portion of the first layer further comprises a medicament.

8. The bandage of claim 1, adapted to conform to the human breast.

9. The bandage of claim 1, adapted to conform to the human abdomen.

10. The bandage of claim 1, adapted to conform to the area around the human mouth.

11. The bandage of claim 1, adapted to conform to the area around the human eyes.

12. The bandage of claim 1, wherein said third layer has an exterior which is textured.

13. A bandage for the treatment of scar tissue, comprising:

a) a tacky, skin contacting first layer comprising a generally non-textured, tacky silicone, with the first layer adapted to adhere to the skin wherein the first layer includes a medicament;

b) a reinforcing second layer comprising a mesh fabric structure having a plurality of holes therethrough, the second layer contacting the first layer; and

c) a non-tacky, bonding third layer overlaying and projecting through said holes in the second layer, thereby occluding said holes and securing the second layer to the first layer by contacting said first.

14. The bandage of claim 13 wherein the medicament is Vitamin E.

15. The bandage of claim 13 wherein the medicament is Tretinoin.

16. The bandage of claim 13 wherein the medicament is aloe.

17. A bandage for the treatment of scar tissue, comprising:

a) a tacky, skin-contacting first layer comprising a generally non-textured, tacky silicone adapted to adhere to the skin, wherein the first layer has a first predetermined thickness;

b) a reinforcing second layer comprising a mesh fabric support structure having a plurality of holes therethrough, the second layer contacting the first layer and having a second predetermined thickness; and

c) a non-tacky, bonding third layer overlaying and projecting through said holes in the second layer thereby occluding said holes and securing the second layer to the first layer by contacting said first layer, the third layer having a third predetermined thickness, wherein said first layer has a greater thickness than said second layer and wherein said second layer has a greater thickness than said third layer.

18. The bandage of claim 17, wherein the second layer comprises polyester.

19. The bandage of claim 17, wherein the third layer comprises silicone.

20. The bandage of claim 17, wherein the first layer includes a medicament.

21. The bandage of claim 17, wherein said first layer has a thickness of approximately 0.079 inches (2.000 mm), wherein said second layer has a thickness of approximately 0.009 inches (0.2286 mm) and wherein said third layer has a thickness of approximately 0.002 inches (0.0508 mm).

22. The bandage of claim 17, wherein a relatively thick packaging substrate is provided onto said first layer of said bandage.