FLUID EXTRACTING WOUND DRESSING

• US 20100106122A1
• Filed: 10/26/2009
• Published: 04/29/2010
• Est. Priority Date: 10/27/2008
• Status: Abandoned Application

• Current Assignee: Sessions Pharmaceuticals Inc.
• Original Assignee: Sessions Pharmaceuticals Inc.
• Inventors: CLEMENS, Leslie
• Application Number:
  US12/605,954
• Publication Number:
  US 20100106122A1
• Time in Patent Office: Days
• US Class Current: 604/369
• CPC Class Codes: A61F 13/01021 characterised by the structure of the dressing
• CPC Class Codes: A61F 13/01042 Absorbency
• CPC Class Codes: A61F 13/36 Surgical swabs, e.g. for absorbency or packing body cavities during surgery A61F13/38 takes precedence
• CPC Class Codes: A61F 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61F 2013/0054 for deep wounds
• CPC Class Codes: A61F 2013/00634 foam
• CPC Class Codes: A61F 2013/0074 containing foams

Abstract

A wound dressing including a composite body of predetermined length adapted for insertion into a wound cavity. The composite body includes a hydrophilic foam matrix. A first layer of polymer-based mesh is disposed at a first position within the foam matrix and at least a second layer of polymer-based mesh is disposed at a second position within the foam matrix in spaced apart opposing relation to the first layer of polymer-based mesh. The first layer of polymer-based mesh and the second layer of polymer-based mesh are in sandwiching relation to a foam core. The wound dressing provides among other advantages strength and substantially enhanced wicking action.

Claims

1. A wound dressing comprising:

a composite body of predetermined length adapted for insertion into a wound cavity, the composite body comprising;

a hydrophilic foam matrix, a first layer of polymer-based mesh disposed at a first position within the foam matrix and at least a second layer of polymer-based mesh disposed at a second position within the foam matrix in spaced apart opposing relation to the first layer of polymer-based mesh, the first layer of polymer-based mesh and the second layer of polymer-based mesh disposed in sandwiching relation to a foam core, each of the first layer of polymer-based mesh and the second layer of polymer-based mesh extending substantially along the length of the composite body.

2. The wound dressing as recited in claim 1, wherein the composite body has a substantially ribbon configuration having a length dimension greater than a width dimension and wherein the width dimension is greater than a thickness dimension.

3. The wound dressing as recited in claim 2, wherein the composite body has at least one rounded end.

4. The wound dressing as recited in claim 3, wherein the composite body has two rounded ends.

5. The wound dressing as recited in claim 2, wherein the composite body includes at least one aperture extending through the thickness dimension.

6. The wound dressing as recited in claim 5, wherein said at least one aperture is a slit having a major axis extending substantially along the length dimension.

7. The wound dressing as recited in claim 1, wherein the foam core extends substantially uninterruptedly between the first layer of polymer-based mesh and the second layer of polymer-based mesh.

8. The wound dressing as recited in claim 1, wherein at least the first layer of polymer-based mesh is formed from a hydrophobic polymer.

9. The wound dressing as recited in claim 8, wherein the hydrophobic polymer is polyester.

10. The wound dressing as recited in claim 1, wherein each of the first layer of polymer-based mesh and the second layer of polymer-based mesh is formed from a hydrophobic polymer.

11. The wound dressing as recited in claim 10, wherein the hydrophobic polymer is polyester.

12. A wound dressing comprising:

an elongated composite body of predetermined length adapted for insertion into a wound cavity, wherein the composite body has a substantially ribbon configuration having a length dimension greater than a width dimension and wherein the width dimension is greater than a thickness dimension, the composite body having a first outer face and a second outer face projecting outwardly away from the first face, the composite body comprising;

a hydrophilic open cell polyurethane foam matrix, a first layer of polymer-based mesh of hydrophobic character disposed within the foam matrix in substantially submerged relation adjacent to the first outer face and at least a second layer of polymer-based mesh of hydrophobic character disposed within the foam matrix in substantially submerged relation adjacent to the second outer face, the first layer of polymer-based mesh and the second layer of polymer-based mesh disposed in sandwiching relation to a foam core, the first layer of polymer-based mesh being substantially coextensive with the first outer face and the second layer of polymer-based mesh being substantially coextensive with the second outer face.

13. The wound dressing as recited in claim 12, wherein the composite body has at least one rounded end.

14. The wound dressing as recited in claim 13, wherein the composite body has two rounded ends.

15. The wound dressing as recited in claim 12, wherein the composite body includes at least one aperture extending through the thickness dimension.

16. The wound dressing as recited in claim 15, wherein said at least one aperture is a slit having a major axis extending substantially along the length dimension.

17. The wound dressing as recited in claim 12, wherein the first layer of polymer-based mesh of hydrophobic character is polyester.

18. The wound dressing as recited in claim 17, wherein the second layer of polymer-based mesh of hydrophobic character is polyester.

19. A wound dressing comprising:

a composite body of predetermined length adapted for insertion into a wound cavity, the composite body comprising;

a hydrophilic foam matrix, a first layer of polymer-based mesh disposed at a first position within the foam matrix and at least a second layer of polymer-based mesh disposed at a second position within the foam matrix in spaced apart opposing relation to the first layer of polymer-based mesh, the first layer of polymer-based mesh and the second layer of polymer-based mesh disposed in sandwiching relation to a foam core, each of the first layer of polymer-based mesh and the second layer of polymer-based mesh extending substantially along the length of the composite body, wherein the wound dressing has increased liquid wicking capacity relative to a substantially identical structure lacking said first layer of polymer-based mesh and said second layer of polymer-based mesh.

20. A method of treating a cavity or tunneling wound, the method comprising the steps of:

(a) providing a wound dressing having a composite body of predetermined length, the wound dressing comprising;

(i) a hydrophilic foam matrix;

(ii) a first layer of polymer-based mesh disposed at a first position within the foam matrix; and

(iii) at least a second layer of polymer-based mesh disposed at a second position within the foam matrix in spaced apart opposing relation to the first layer of polymer-based mesh, the first layer of polymer-based mesh and the second layer of polymer-based mesh disposed in sandwiching relation to a foam core;

(b) inserting a distal portion of the wound dressing into the wound towards a base of the wound;

(c) retaining the wound dressing in the wound for a time sufficient to allow at least partial healing of the wound while wicking fluid away from the base of the wound; and

(d) withdrawing the wound dressing at least partially away from the base of the wound.