Abdominal wound dressing with application aid

Patent metadata

Field	Value
Publication number	US-10500103-B2
Application number	US-201213605323-A
Country	US
Kind code	B2
Filing date	Sep 6, 2012
Priority date	Sep 9, 2011
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

The invention relates to a wound dressing and to a device for use in negative-pressure wound therapy, in particular for wounds in the abdominal region, and also to methods for producing the device. The wound dressing includes at least one flexible film for application onto the wound bed, more particularly onto exposed internal organs or onto the greater omentum, and furthermore at least one pocket, which is present on the side of the wound dressing that faces away from the wound during use and which simplifies the uniform application and placement of the wound dressing on the wound bed.

First claim

What is claimed is:

1. A wound dressing ( 10 ) for use in negative-pressure wound therapy, in treatment of abdominal wounds, comprising:
i) a first flexible film ( 1 ) that forms a planar surface having a first and a second side, with the first side being provided for application on a wound bed ( 13 ), and with the first flexible film ( 1 ) furthermore having a multiplicity of openings ( 6 ) distributed evenly across the first flexible film ( 1 ) and which are capable of enabling fluid communication through the first flexible film ( 1 ); and
ii) at least three pockets ( 25 ), each of the at least three pockets include an opening ( 27 ) that predominantly is directed toward a center of the wound dressing ( 10 ), the at least three pockets ( 25 ) and the openings ( 27 ) are present on and above an uppermost surface of the first flexible film ( 1 ) that faces away from a wound during use and simplifies a uniform application and placement of the wound dressing ( 10 ) on the wound bed ( 13 ),
wherein there is no additional conduit on the second side of the first flexible film ( 1 ).

2. The wound dressing ( 10 ) according to claim 1 , wherein the openings ( 6 ) present in the first flexible film ( 1 ) have a three-dimensional shape that is conical or cylindrical to the greatest possible extent and, as a result of this, the film ( 1 ) has a smooth side and a roughened side opposite to the smooth side.

3. The wound dressing ( 10 ) according to claim 2 , wherein the the smooth side of the first film ( 1 ) is the side that is configured to face the wound, and the side of the first film ( 1 ) configured to face away from the wound during use is formed by the roughened side.

4. The wound dressing ( 10 ) according to claim 1 , wherein the openings ( 27 ) of the at least three pockets ( 25 ) form a conical shape.

5. The wound dressing ( 10 ) according to claim 1 , wherein the at least three pockets ( 25 ) are formed by adhesive bonding, thermal welding, pressing or ultrasound welding, of an areal material section on the side of the wound dressing ( 10 ) that faces away from the wound during use.

6. The wound dressing ( 10 ) according to claim 1 , wherein the at least three pockets ( 25 ) are present on the second side of the first flexible film ( 1 ) such that the openings ( 27 ) of the at least three pockets ( 25 ) on the uppermost surface are capable of being fully exposed to the user and fully accessible by the user.

7. The wound dressing ( 10 ) according to claim 1 , wherein the first flexible film ( 1 ) comprises two or more separate films applied together.

8. The wound dressing ( 10 ) according to one of claim 1 , wherein the at least three pockets are formed by folding back a film portion of the wound dressing.

9. The wound dressing ( 10 ) according to claim 1 , wherein the sum of the open area of the openings ( 6 ) present in the first flexible film ( 1 ) is at least 0.1% and at most 25% of an areal extent of the first flexible film ( 1 ).

10. The wound dressing ( 10 ) according to claim 1 , wherein the pockets ( 25 ) are arranged on one or more concentric circles which encircle the center point of the wound dressing and wherein the pockets are present on each circle distributed with a uniform spacing between one another.

11. The wound dressing ( 10 ) of claim 1 , wherein the multiplicity of openings ( 6 ) is present in an amount of from −150 to 190 openings per cm 2 or 260 to 300 openings per cm 2 .

12. The wound dressing ( 10 ) of claim 1 , wherein the multiplicity of openings ( 6 ) are holes wherein the sum of the area of the holes is at least 0.5% and at most 25% of an areal extent of the first flexible film ( 1 ).

13. The wound dressing ( 10 ) according to claim 1 , wherein the at least three pockets ( 25 ) substantially have a form of a rectangle, a trapezium, a semi-circle, a triangle, an annulus or an annular sector.

14. The wound dressing ( 10 ) according to claim 1 , furthermore comprising one or more liquid-permeable layers ( 11 ) fabricated from a porous polymer foam, for application on the side of the wound dressing ( 10 ) that faces away from the wound during use.

15. The wound dressing ( 10 ) of claim 1 wherein the wound bed ( 13 ) is exposed internal organs or a greater omentum.

16. The wound dressing ( 10 ) of claim 1 wherein the at least three pockets ( 25 ) are situated at or adjacent to a peripheral edge of the wound dressing.

17. The wound dressing ( 10 ) of claim 1 which further comprises a negative pressure port and/or functional connection to a negative pressure source.

18. The wound dressing ( 10 ) of claim 1 wherein the at least one pocket ( 25 ) has a lateral seam.

19. The wound dressing ( 10 ) of claim 1 , wherein the at least three pockets ( 25 ) are uniformly spaced from each other on the planar surface of the first flexible film ( 1 ) that is configured to face away from the wound, and are symmetrically placed on the wound dressing ( 10 ).

20. A device ( 40 ) for use in negative-pressure wound therapy, for treatment of abdominal wounds, comprising:
a) a wound dressing ( 10 ) which includes:
i) a first flexible film ( 1 ) that forms a planar surface having a first and a second side, with the first side being provided for application on a wound bed ( 13 ), and with the first flexible film ( 1 ) furthermore having a multiplicity of openings ( 6 ) distributed evenly across the first flexible film ( 1 ) and which are capable of enabling fluid communication through the first flexible film ( 1 ); and
ii) at least three pockets ( 25 ), which include an opening ( 27 ) that predominantly is directed toward a center of the wound dressing ( 10 ), the at least three pockets ( 25 ) and the openings ( 27 ) are present on and opened above an uppermost surface-of the first flexible film ( 1 ) that faces away from a wound during use and simplifies the uniform application and placement of the wound dressing ( 10 ) on the wound bed ( 13 ), characterized in that there is no additional conduit present which is applied to the second side of the first film ( 1 ); and

b) an airtight cover material ( 16 ) for air-impermeable closure of a wound and wound surroundings, which air-impermeable enclosure provides a wound space formed thereby, and a negative-pressure port, which can be applied to the air-tight cover material ( 16 ) on a side that faces away from the wound, for a functional connection of the wound space to a negative-pressure source ( 21 ) situated outside of the airtight cover material ( 16 ) such that negative pressure can be set in the wound space and liquids can be suctioned out of the wound space.

21. The device ( 40 ) of claim 20 wherein the wound bed ( 13 ) is exposed internal organs or a greater omentum.

Assignees

• Croizat Pierre
• Eckstein Axel
• Wolf Comelia
• Hartmann Paul Ag

Inventors

• Croizat Pierre
• Eckstein Axel
• Wolf Comelia

Classifications

• A61M2210/1021

  Abdominal cavity · CPC title

• A61F13/148 Primary

  Abdomen bandages or bandaging garments · CPC title

• A61M1/0088

  Human Necessities · mapped topic

• A61F13/0216

  Human Necessities · mapped topic

• A61F13/00068

  Human Necessities · mapped topic