Silicone Gel-Coated Wound Dressing

Patent metadata

Field	Value
Publication number	US-2016250077-A1
Application number	US-201615051466-A
Country	US
Kind code	A1
Filing date	Feb 23, 2016
Priority date	Sep 3, 2010
Publication date	Sep 1, 2016
Grant date	—

Abstract

A wound dressing product comprising: a substrate layer having an upper surface and a lower surface; a tacky silicone coating composition present on said upper surface and on said lower surface; and upper and lower release sheets covering said substrate and said tacky silicone coating composition on said upper and lower surfaces, respectively, and adhered to said surfaces by said tacky silicone coating composition, wherein said upper surface is less tacky than said lower surface whereby said upper release sheet can be removed from said upper surface more readily than said lower release sheet can be removed from said lower surface. Also provided are methods for making such dressings.

First claim

1 .- 14 . (canceled)

15 . A wound dressing product comprising:
a substrate layer having an upper surface and a lower surface; a tacky silicone coating composition present on said upper surface and on said lower surface; and upper and lower release sheets covering said substrate layer and said tacky silicone coating composition on said upper surface and said lower surface, respectively, and adhered to said surfaces by said tacky silicone coating composition, wherein said upper surface is less tacky than said lower surface whereby said upper release sheet can be removed from said upper surface more readily than said lower release sheet can be removed from said lower surface.

16 . The wound dressing product of claim 15 , wherein an array of apertures extends through said silicone coating composition and said substrate layer.

17 . The wound dressing product of claim 15 , wherein said substrate layer comprises or consists essentially of a woven, nonwoven or knitted mesh.

18 . The wound dressing product of claim 15 , wherein the tackiness of said lower surface as measured by a loop tack test is at from 20% to 100% greater than the tackiness of said upper surface.

19 . The wound dressing product of claim 15 , wherein said silicone coating composition on said upper surface and said lower surface is substantially chemically homogeneous.

20 . The wound dressing product of claim 15 , wherein said silicone coating composition on said upper surface and said lower surface has been formed by curing of a silicone prepolymer composition.

21 . The wound dressing product of claim 15 , which is sterile and packaged in a microorganism-impermeable container.

22 . A wound dressing product, comprising:
a substrate layer having an upper surface and a lower surface; and a tacky silicone coating composition present on said upper surface and on said lower surface; wherein said tacky silicone coating composition is present in a greater weight on said upper surface than on said lower surface of said substrate layer.

23 . The wound dressing product of claim 22 , further comprising an upper release sheet adhered to said upper surface and a lower release sheet adhered to said lower surface.

24 . The wound dressing product of claim 22 , wherein said tacky silicone coating composition is formed from a fluid silicone prepolymer composition comprising a vinyl functional polydimethylsiloxane, a hydrogen functional siloxane, a hydrosilylation catalyst, and a polymerization inhibitor.

25 . The wound dressing product of claim 22 , wherein said tacky silicone coating composition is hydrophobic, and does not include hydrophilic components.

26 . The wound dressing product of claim 22 , wherein said tacky silicone coating composition comprises a silicone prepolymer composition that has been cured thermally and by ionizing radiation.

27 . The wound dressing product of claim 26 , wherein said ionizing radiation is gamma radiation.

28 . The wound dressing product of claim 22 , wherein said upper surface is more tacky than said lower surface.

29 . The wound dressing product of claim 23 , wherein said lower release sheet is adapted to be removed from said lower surface more readily than said upper release sheet can be removed from said upper surface.

30 . The wound dressing product of claim 22 , wherein an array of apertures extends through said silicone coatings and said substrate layer.

31 . The wound dressing product of claim 22 , wherein said silicone on said upper surface and said lower surface is substantially chemically homogeneous.

32 . The wound dressing product of claim 22 , wherein said substrate layer comprises or consists essentially of a woven, nonwoven, or knitted mesh.

33 . The wound dressing product of claim 22 , wherein the tackiness of said upper surface is from 20% to 100% greater than the tackiness of said lower surface.

34 . The wound dressing product of claim 22 , which is sterile and packaged in a microorganism-impermeable container.

Assignees

• Kci Usa Inc

Inventors

• Addison Deborah
• Stephens Sally
• Hadley Rachel

Classifications

• A61F13/0266 Primary

  especially adapted for wound covering/occlusive dressings · CPC title

• A61F13/00991

  for treating webs, e.g. for moisturising, coating, impregnating or applying powder · CPC title

• A61L15/24

  Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof {(A61L15/225 takes precedence)} · CPC title

• A61F2013/00617

  with different hardness · CPC title

• A61F2013/00702

  silicon-based · CPC title