Custom patterned wound dressings having patterned fluid flow barriers and methods of manufacturing and using same

• US 8,237,009 B2
• Filed: 06/30/2008
• Issued: 08/07/2012
• Est. Priority Date: 06/30/2008
• Status: Expired due to Fees

• Current Assignee: Nuvesse Skin Therapies Inc.
• Original Assignee: Polyremedy, Inc.
• Inventors: Siniaguine, Oleg
• Primary Examiner(s): Lewis, Kim M
• Application Number:
  US12/164,451
• Publication Number:
  US 20090326429A1
• Time in Patent Office: 1,499 Days
• Field of Search: 602 41- 59
• US Class Current: 602/43
• CPC Class Codes: A61F 13/0203 with fluid retention members
• CPC Class Codes: A61F 13/0283 for making adhesive or cohesive tape or fabrics therefor, e.g. coating or mechanical treatments
• CPC Class Codes: A61F 15/001 Packages or dispensers for bandages, cotton balls, drapes, dressings, gauze, gowns, sheets, sponges, swabsticks or towels A61F15/007 takes precedence
• CPC Class Codes: A61F 2013/00319 to make surface hydrophobic
• CPC Class Codes: A61F 2013/00731 with absorbing pads

Abstract

A custom fabricated (e.g. custom shaped and dimensioned) wound dressing that matches a corresponding, pre-mapped integumentary wound includes one or more liquid flow barriers composed for example of a hydrophobic and high viscosity liquid embedded in a layer of the dressing. One such embedded hydrophobic liquid barrier covers a skin section immediately adjacent to the wound opening so as to protect the skin section from harmful liquids such as exudates or water. In one embodiment, the skin protecting barrier is substantially comprised of a silicone oil having a viscosity in the range of about 100 cSt to 1000 cSt.

Claims

1. A custom wound dressing comprising:

(a) a plurality of layers extending laterally in the dressing, the plurality of layers including a wound interfacing layer that is configured to interface with a specific wound, the wound interfacing layer having a porous hydrophilic material; and

(b) at least one barrier in the wound interfacing layer for preventing or inhibiting a liquid absorbed by the porous hydrophilic material from spreading laterally from one side of the barrier to an opposed other side of the barrier.

2. The custom wound dressing of claim 1 wherein the barrier essentially consists of a silicone or a silicone oil.

3. The custom wound dressing of claim 2 wherein said silicone or silicone oil has a viscosity in the range of about 1 CentiStoke to about 10,000 cSt.

4. The custom wound dressing of claim 1 wherein said silicone or silicone oil has a viscosity in the range of about 100 cSt to about 1000 cSt.

5. The custom wound dressing of claim 1 wherein the barrier substantially prevents a liquid that is harmful to skin from migrating through or out of the wound interfacing layer to contact a skin area adjacent to the wound interfacing layer.

6. The custom wound dressing of claim 4 wherein wound interfacing layer is dimensioned to contact at least one pre-mapped adjacent skin zone and the barrier is positioned to align over the at least one pre-mapped adjacent skin zone.

7. The custom wound dressing of claim 6 wherein the pre-mapped adjacent skin zone surrounds the wound and the barrier is positioned to cover the entirety of the pre-mapped adjacent skin zone.

8. The custom wound dressing of claim 1 wherein the at least one barrier extends from the wound interfacing layer to an adjacent layer of the plurality of layers.

9. The custom wound dressing of claim 1 wherein the adjacent layer comprises hydrophobic material.

10. A combination of a package and a custom wound dressing enclosed in the package wherein the wound dressing comprises:

(a) a plurality of layers extending laterally in the dressing, including a layer of porous hydrophilic material; and

(b) at least one barrier embedded in the layer of porous hydrophilic material, the barrier configured to prevent or inhibit a first liquid absorbed by the layer of the hydrophilic material from spreading laterally from one side of the barrier to an opposite side of the barrier, where the barrier is positioned at a location corresponding to a location of at least one of pre-mapped skin zones.

11. The combination of claim 10 wherein the barrier includes a substantial amount of a silicone or a silicone oil for causing the barrier to have hydrophobic properties.

12. The combination of claim 10 wherein the barrier includes a mineral oil or a vegetable oil.

13. The combination of claim 10 wherein the barrier includes a water repelling liquid having a viscosity in the range of about 1 CentiStoke to about 10,000 cSt.

14. The combination of claim 10 wherein the layer of porous hydrophilic material is configured to interface with an identified wound.

15. The combination of claim 14 wherein the barrier includes a coloring dye.

16. The combination of claim 14 wherein the barrier is positioned to align over the at least one pre-mapped adjacent skin zone and to protect the adjacent skin zone from exposure to harmful substances.

17. The combination of claim 10 wherein the barrier is positioned to protectively align relative to the at least one pre-mapped adjacent skin zone and to protect the adjacent skin zone from exposure to harmful substances.

18. The combination of claim 10 wherein said plurality of laterally extending layers include a gas or vapor permeable porous and hydrophobic layer that is permeable in at least one zone of the second layer by a predefined gas or vapor.

19. The combination of claim 18 wherein the gas or vapor permeable porous and hydrophobic layer has one or more custom patterned zones of comparatively reduced or essentially no permeability for the predefined gas or vapor in addition to having said at least one zone exhibiting comparatively larger permeability to the predefined gas or vapor and wherein the one or more custom patterned zones correspond to zones of an identified wound.

20. The combination of claim 19 wherein a first of the custom patterned zones with reduced or essentially no permeability is positioned above the barrier.

21. The combination of claim 19 wherein the gas or vapor permeable porous and hydrophobic layer contains intersecting nonwoven microfibers and said one or more custom patterned zones of comparatively reduced or essentially no permeability include corresponding films formed by melting of the microfibers.

22. The combination of claim 19 wherein the gas or vapor permeable porous and hydrophobic layer contains intersecting nonwoven microfibers and said one or more custom patterned zones of comparatively reduced or essentially no permeability include a laterally extending gas impermeable film deposited on the microfibers.

23. The combination of claim 19 wherein the gas or vapor permeable porous and hydrophobic layer contains intersecting nonwoven microfibers having an average pore size less than less than about 0.5 micron.

24. The combination of claim 10 and further comprising:

(c) within said plurality of laterally extending layers, another layer of porous hydrophilic material; and

(d) at least another barrier embedded in the other layer of porous hydrophilic material for preventing or inhibiting liquid absorbed by the other layer of hydrophilic material from spreading laterally from one side of the other barrier to an opposed other side of the other barrier.

25. The combination of claim 24 and further comprising:

(e) between the first and second laterally extending hydrophilic layers, one or more laterally extending fluid barriers that are impermeable to a predefined liquid and/or impermeable to a predefined vapor or gas, and where there is at least one zone between the first and second laterally extending hydrophilic layers where the predefined liquid, predefined vapor or gas can flow between the laterally extending hydrophilic layers.

26. The combination of claim 10 wherein said package comprises:

(c) a first packaging sheet;

(d) a second packaging sheet, attached to the first sheet; and

(e) at least a first label integrally formed on or attached to one of said first and second packaging sheets and providing said indicia that identifies the specific wound.

27. The combination of claim 26 wherein the first said indicia includes a graphic or schematic of at least one of body anterior and body posterior and an indication of where on the represented body anterior or body posterior the identified wound is located.

28. The combination of claim 26 wherein the at least first label further provides second indicia separately identifying the patient having the identified wound.

29. The combination of claim 26 wherein the at least first label further provides second indicia indicating a route and/or method by way of which said combination of the package and the custom dressing are to be delivered to the identified wound or patient having an identified wound.

30. The combination of claim 26 wherein the at least first label further provides second indicia indicating at least one of a prescribed date for application or prescribed date for removal of the dressing respectively to or from an identified wound.

31. The combination of claim 26 wherein the at least first label further provides second indicia defining or pointing to instructions for applying or removing the dressing respectively to or from an identified wound.

32. The combination of claim 31 wherein said second indicia points to a computer network site that provides instructions for applying or removing the dressing respectively to or from an identified wound.

33. The combination of claim 26 wherein the first packaging sheet includes a thermally printable-on layer and the at least first label is integrally formed as thermal printing on said thermally printable-on layer.

34. The combination of claim 26 and further comprising:

(f) a second label integrally formed on or attached to one of said first and second packaging sheets and providing additional indicia that performs at least one of the following functions;

indicating a route or method by way of which said combination of the package and the custom dressing are to be delivered to a patient,

indicating at least one of a prescribed date for application or prescribed date for removal of the dressing respectively to or from the identified wound, and

defining or pointing to instructions for applying or removing the dressing respectively to or from the identified wound.

35. The combination of claim 26 further comprising an adhesive ring that sealing bonds the first and second packaging sheets to one another.

36. The combination of claim 10 wherein the at least one barrier extends from the wound interfacing layer to an adjacent layer of the plurality of layers.

37. The combination of claim 36 wherein the adjacent layer comprises hydrophobic material.