Absorbent dressing with hybrid drape

Patent metadata

Field	Value
Publication number	US-9283118-B2
Application number	US-201414179712-A
Country	US
Kind code	B2
Filing date	Feb 13, 2014
Priority date	Mar 14, 2013
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

A dressing may be suitable for use with systems and methods for treating a tissue site. Embodiments of the dressing may include a base layer, an adhesive, a sealing member, a first wicking layer, a second wicking layer, and an absorbent layer. The base layer may have a plurality of apertures and may be adapted to cover the tissue site. The adhesive may be positioned between the sealing member and the base layer such that the sealing member and the base layer define an enclosure. The first and the second wicking layer may each be disposed in the enclosure with the absorbent layer positioned between the first and the second wicking layer. Other dressings, systems, and methods are disclosed.

First claim

We claim:

1. A system for treating a tissue site, comprising:
an interface manifold adapted to be positioned proximate the tissue site;
a dressing, comprising:
a base layer having a periphery surrounding a central portion and a plurality of apertures disposed through the periphery and the central portion, wherein the base layer is adapted to cover the interface manifold and tissue surrounding the tissue site,
an adhesive in fluid communication with the apertures in the periphery of the base layer,
a sealing member having a periphery and a central portion, the periphery of the sealing member positioned proximate the periphery of the base layer, wherein the central portion of the sealing member and the central portion of the base layer define an enclosure,
a first wicking layer disposed in the enclosure,
a second wicking layer disposed in the enclosure,
an absorbent layer disposed between the first wicking layer and the second wicking layer, and
a conduit interface positioned proximate to the sealing member and in fluid communication with the enclosure; and

a reduced-pressure source adapted to be coupled in fluid communication with the conduit interface to provide reduced pressure to the dressing.

2. The system of claim 1 , wherein the interface manifold is adapted to distribute reduced pressure to the tissue site, and wherein the interface manifold is comprised of a hydrophobic material.

3. The system of claim 1 , wherein the dressing is adapted to provide reduced pressure to the interface manifold and to store fluid extracted from the tissue site through the interface manifold.

4. The system of claim 1 , wherein the central portion of the base layer is adapted to be positioned proximate the interface manifold and the periphery of the base layer is adapted to be positioned proximate the tissue surrounding the tissue site.

5. The system of claim 1 , wherein the periphery of the base layer is adapted to surround the interface manifold.

6. The system of claim 1 , wherein the apertures in the base layer are adapted to be in fluid communication with the interface manifold and the tissue surrounding the tissue site.

7. The system of claim 1 , wherein the base layer is comprised of silicone.

8. The system of claim 1 , wherein the adhesive is adapted to be in fluid communication with the tissue surrounding the tissue site through the apertures in the base layer, and wherein the adhesive is positioned at least between the periphery of the sealing member and the periphery of the base layer.

9. The system of claim 1 , wherein the adhesive is an acrylic adhesive.

10. The system of claim 1 , wherein the sealing member is liquid impermeable, and wherein the sealing member comprises polyurethane.

11. The system of claim 1 , wherein the sealing member is adapted to provide a sealed space between the sealing member and the tissue site.

12. The system of claim 1 , wherein the adhesive is disposed as a coating on a surface of the sealing member that faces the base layer.

13. The system of claim 1 , wherein the first wicking layer has a grain structure adapted to wick fluid along a surface of the first wicking layer, and wherein the second wicking layer has a grain structure adapted to wick fluid along a surface of the second wicking layer.

14. The system of claim 1 , wherein the absorbent layer is comprised of a hydrophilic material that is adapted to absorb fluid.

15. The system of claim 1 , wherein the absorbent layer is a plurality of absorbent layers, and wherein the plurality of absorbent layers are positioned in fluid communication between the first wicking layer and the second wicking layer.

16. The system of claim 15 , further comprising at least one intermediate wicking layer disposed in fluid communication between the absorbent layers.

17. The system of claim 1 , wherein a peripheral portion of the first wicking layer is coupled to a peripheral portion of the second wicking layer providing a wicking layer enclosure surrounding the absorbent layer between the first and the second wicking layer.

18. The system of claim 1 , the dressing further comprising an anti-microbial layer disposed in the enclosure.

19. The system of claim 1 , further comprising an odor filter adapted to substantially preclude the passage of odors out of a sealed space between the sealing member and the tissue site, wherein the odor filter is carried by the conduit interface, and wherein the odor filter comprises carbon.

20. The system of claim 19 , the dressing further comprising a primary hydrophobic filter adapted to substantially preclude the passage of liquids out of the sealed space, wherein the primary hydrophobic filter is carried by the conduit interface.

21. The system of claim 20 , further comprising a conduit having an internal lumen coupled in fluid communication between the conduit interface and the reduced-pressure source, wherein the conduit has a secondary hydrophobic filter disposed in the internal lumen.

22. The system of claim 21 , wherein fluid communication between the dressing and the reduced-pressure source is provided through each of the odor filter, the primary hydrophobic filter, and the secondary hydrophobic filter.

23. The system of claim 1 , wherein the second wicking layer has at least a peripheral portion positioned in contact with the sealing member, wherein the absorbent layer has a peripheral portion in contact with the sealing member and surrounding the peripheral portion of the second wicking layer, and wherein the first wicking layer has a peripheral portion in contact with the sealing member and surrounding the peripheral portion of the absorbent layer.

24. The system of claim 23 , wherein at least the peripheral portions of each of the second wicking layer, the absorbent layer, and the first wicking layer are coupled to the sealing member.

25. A dressing for treating a tissue site, comprising:
a base layer having a periphery surrounding a central portion and a plurality of apertures disposed through the periphery and the central portion, wherein the base layer is adapted to cover the tissue site and tissue surrounding the tissue site;
an adhesive in fluid communication with the apertures in the base layer;
a sealing member having a periphery and a central portion, the periphery of the sealing member positioned proximate the periphery of the base layer, wherein the central portion of the sealing member and the central portion of the base layer define an enclosure;
a first wicking layer disposed in the enclosure;
a second wicking layer disposed in the enclosure;
an absorbent layer positioned in fluid communication between the first wicking layer and the second wicking layer, wherein a peripheral portion of the first wicking layer is coupled to a peripheral portion of the second wicking layer providing a wicking layer enclosure surrounding the absorbent layer between the first and the second wicking layer; and
a conduit interface positioned proximate to the sealing member and in fluid communication with the enclosure.

26. The dressing of claim 25 , wherein the dressing is adapted to provide reduced pressure to the tissue site and to store fluid extracted from the tissue site.

27. The dressing of claim 25 , wherein the central portion of the base layer is adapted to cover the tissue site and the periphery of the base layer is adapted to be positioned proximate the tiss

Assignees

• Kci Licensing Inc

Inventors

• Locke Christopher Brian
• Robinson Timothy Mark
• Coulthard Richard Daniel John

Classifications

• A61M1/918

  for multiple suction locations · CPC title

• A61M1/915

  Constructional details of the pressure distribution manifold · CPC title

• A61F13/00068

  Human Necessities · mapped topic

• A61M1/0088

  Human Necessities · mapped topic

• A61F13/0216 Primary

  Human Necessities · mapped topic