Vacuum therapy and cleansing dressing for wounds

• US 8,246,592 B2
• Filed: 11/13/2009
• Issued: 08/21/2012
• Est. Priority Date: 11/29/2000
• Status: Expired due to Term

• Current Assignee: KCI Licensing Incorporated (3M Company)
• Original Assignee: KCI Medical Resources Unlimited Company (3M Company)
• Inventors: Lockwood, Jeffrey S., Petrosenko, Robert, Risk, James Robert Jr.
• Primary Examiner(s): Kidwell, Michele M
• Application Number:
  US12/618,411
• Publication Number:
  US 20100106117A1
• Time in Patent Office: 1,012 Days
• Field of Search: 604289-290, 604/304, 604/305, 604/310, 604/313, 604/315, 604/540, 604/541, 604/543, 604/317, 604/319, 604/321, 604/327, 604/355, 602/48, 601/6, 601/7, 601 9- 11
• US Class Current: 604/313
• CPC Class Codes: A61F 13/05 specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/772 operating alternately
• CPC Class Codes: A61M 1/84 Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/92 with liquid supply means
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202

Abstract

Wound treatment apparatuses comprising a vacuum source and a bandage (e.g., a wound-care bandage) configured to be coupled (and/or coupled) to the vacuum source. Some embodiments of the bandage including a wound dressing member configured to be placed in contact with a wound surface, and a suction port associated with the wound dressing member and/or configured to be connected to the vacuum source. Some embodiments of the member including a plurality of spacers configured to contact the wound surface to define suction space between the member and the wound surface. Some embodiments of the member including holes configured to communicate with the suction space, and/or a plurality of passageways between the suction port and the holes.

Claims

1. A wound treatment apparatus comprising:

a vacuum source;

a bandage configured to be coupled to the vacuum source, the bandage comprising a wound dressing member configured to be placed in contact with a wound surface, the wound dressing member having;

a plurality of spacers configured to contact the wound surface to define suction space between the wound dressing member and wound surface;

a suction port associated with the wound dressing member and configured to be connected to the vacuum source;

a plurality of suction holes configured to communicate with the suction space; and

a plurality of passageways between the suction port and the suction holes.

2. The apparatus of claim 1, where the wound dressing member comprises a relatively thin, flexible member configured to be trimmed conformingly to fit the wound surface, the member having a wound contacting surface including the spacers and an opposite surface.

3. The apparatus of claim 2, where the passageways of the wound dressing member are provided by channels formed in the opposite surface extending away from the suction port and a cover over the channels.

4. The apparatus of claim 3, where the spacers and suction space are defined by a plurality of channels formed in the wound contacting surface, and where the channels of the wound contacting surface open toward the wound surface and include side edges contacting the wound.

5. The apparatus of claim 4, where the suction holes of the wound dressing member extend between the channels on the wound contacting surface and the channels on the opposite surface.

6. The apparatus of claim 1, further comprising:

a fluid source configured to be coupled to the bandage such that the irrigation fluid can be distributed to the wound surface through the suction holes of the wound dressing member and the suction space.

7. The apparatus of claim 1, where the bandage further comprises a cover configured to cover the member and to be coupled to healthy skin surrounding the wound to define a space above the wound surface where a vacuum can be formed if the port is connected to the vacuum source.

8. A wound treatment apparatus comprising:

a vacuum source; and

a wound care bandage configured to be coupled to the vacuum source, and comprising a thin, flexible member configured to be trimmed to fit a wound and placed in contact with the wound surface such that a space is provided between the member and the wound surface, the member having a plurality of holes configured to communicate with the space, a port associated with the member, and passageways extending from the port to the holes.

9. The apparatus of claim 8, where the member includes a wound contacting surface and an opposite surface, the bandage further includes a cover adjacent the opposite surface, and the passageways are defined by a plurality of channels formed in the opposite surface and the cover.

10. The apparatus of claim 9, where the opposite surface of the member further includes a plurality of channels concentric with the port and wherein the holes of the member are aligned with the concentric channels.

11. The apparatus of claim 8, where the member includes a wound contacting surface and a plurality of spacers adapted to contact the wound surface to provide the space between the member and the wound.

12. The apparatus of claim 11, where the spacers of the member are defined by a plurality of channels in the wound contacting surface, each including outer edges configured to contact the wound surface.

13. The apparatus of claim 8, where the bandage further comprises a cover configured to cover the member and to be coupled to healthy skin surrounding the wound to define a space above the wound surface where a vacuum can be formed if the port is connected to the vacuum source.

14. A wound treatment apparatus comprising:

a vacuum source; and

a wound care bandage configured to be coupled to the vacuum source, and comprising;

a wound dressing member configured to be placed in direct contact with a wound surface, the wound dressing member having at least one access port configured to be connected to the vacuum source, a wound contacting surface, an opposite surface, and a plurality of channels on the wound contacting surface configured such that if the wound contacting surface is placed in contact with the wound surface the plurality of channels on the wound contacting surface open toward the wound surface to provide communication with areas of the wound surface.

15. The apparatus of claim 14, where the opposite surface of the wound dressing member includes a plurality of channels extending away from the access port.

16. The apparatus of claim 15, where the wound contacting surface and the opposite surface of the wound dressing member each include a plurality of additional channels concentric with the access port.

17. The apparatus of claim 14, where the wound dressing member comprise flexible material configured to conformingly rest against the wound surface.

18. The apparatus of claim 17, where the wound dressing member comprises a material configured to be trimmed conformingly to fit the wound.

19. The apparatus of claim 17, where the wound dressing member includes a plurality of holes opening from the opposite surface to the wound contacting surface.

20. The apparatus of claim 19, where the plurality of holes connect the channels of the wound contacting surface with the channels of the opposite surface.

21. The apparatus of claim 14, where the opposite surface of the wound dressing member includes a plurality of channels, and the wound dressing member further includes a plurality of holes providing communication between the channels on the wound contacting surface and the channels on the opposite surface.

22. The apparatus of claim 21, where channels on the surfaces of the wound dressing member extend radially outward from the access port and the holes are spaced radially along the channels.

23. The apparatus of claim 21, where the bandage comprises a cover over the opposite surface to cover the channels on the opposite surface.

24. The apparatus of claim 14, where the wound dressing member comprises a relatively thin, flexible, sheet-like member configured to conformingly rest against a wound surface, and the wound dressing member includes a plurality of holes opening through the wound contacting surface.