Wound treatment apparatus

• US 7,794,438 B2
• Filed: 06/11/2007
• Issued: 09/14/2010
• Est. Priority Date: 08/07/1998
• Status: Expired due to Fees

• Current Assignee: KCI Licensing Incorporated (3M Company)
• Original Assignee: KCI Medical Resources Unlimited Company (3M Company)
• Inventors: Howard, John, Henley, Alan Wayne, Bessette, Russell W., Moses, Leigh Marie, Sanderson, Ronald Leslie, Price, James H.
• Primary Examiner(s): Bianco; Patricia M
• Assistant Examiner(s): NGUYEN, CAMTU TRAN
• Application Number:
  US11/761,066
• Publication Number:
  US 20070233022A1
• Time in Patent Office: 1,191 Days
• Field of Search: 604289-291, 604/294, 604304-308, 604/313, 604/319, 604/320, 604/326, 604/315, 604/543, 602/2, 602/42, 602/48
• US Class Current: 604/304
• CPC Class Codes: A61F 2013/0017 possibility of applying fluid
• CPC Class Codes: A61M 1/73 comprising sensors or indicators for physical values
• CPC Class Codes: A61M 1/732 Visual indicating means for vacuum pressure
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• 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 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/94 with gas supply means
• CPC Class Codes: A61M 1/966 having a pressure sensor on or near the dressing
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 2205/07 having air pumping means
• CPC Class Codes: A61M 2205/15 Detection of leaks
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/3653 by Joule effect, i.e. electric resistance
• CPC Class Codes: A61M 2205/366 by liquid heat exchangers
• CPC Class Codes: A61M 2205/368 by electromagnetic radiation, e.g. IR waves
• CPC Class Codes: A61M 3/0216 Pressure
• CPC Class Codes: A61M 3/0229 Devices operating in a closed circuit, i.e. recycling the irrigating fluid
• CPC Class Codes: A61M 35/30 Gas therapy for therapeutic treatment of the skin

Abstract

A bandage has a first sheet overlying a wound and located adjacent to it and a top sheet overlying the first sheet. The first sheet has a plurality of discrete passageways overlying the wound and adapted to communicate negative pressure established by a negative pressure source to the wound.

Claims

1. A bandage system for use with a wound treatment apparatus having a negative pressure source, the bandage system comprising a first sheet configured to overlie a wound such that the first sheet is adjacent to the wound, and a top sheet distinct from the first sheet and overlying the first sheet, the first sheet having a plurality of discrete passageways configured to communicate negative pressure established by the negative pressure source to the wound, wherein the bandage system further comprises a foam pad positioned between the first sheet and the top sheet, and a tube in communication with the plurality of discrete passageways, the tube being spaced-apart from the foam pad such that the tube does not extend through the foam pad, the tube configured to be removably coupled to the wound treatment apparatus.

2. The bandage system of claim 1, wherein the tube is configured to be coupled to a vacuum source.

3. The bandage system of claim 1, wherein the first sheet and the second sheet are made from a material different from the foam pad.

4. The bandage system of claim 1, wherein the tube is configured to be coupled to a fluid source.

5. The bandage system of claim 1, wherein the plurality of passageways in the first sheet comprises a plurality of apertures that are arranged to lie on a circle.

6. The bandage system of claim 1, wherein the first sheet is clear.

7. The bandage system of claim 1, wherein the first sheet is flexible.

8. The bandage system of claim 1, wherein the first sheet is made from a material that is generally water and air impermeable.

9. The bandage system of claim 1, further comprising an element that adheres to healthy skin adjacent the wound and the first sheet is coupled to the element.

10. The bandage system of claim 1, wherein at least some of the plurality of discrete passageways in the first sheet are adapted to communicate fluid from a fluid source of the wound treatment apparatus to the wound.

11. The bandage system of claim 1, wherein the top sheet does not have any openings therethrough to provide a vacuum space above the wound.

12. A bandage system for use with a wound treatment apparatus having a negative pressure source, the bandage system comprising a first sheet and a second sheet distinct from the first sheet, the first sheet configured to overlie a wound such that the first sheet is adjacent to the wound, the first sheet having a plurality of discrete passageways adapted to communicate negative pressure established by the negative pressure source to a wound, the second sheet having at least one discrete passageway, wherein the bandage system further comprises a foam pad and a vacuum tube spaced-apart from the foam pad such that the vacuum tube does not extend through the foam pad, the vacuum tube configured to be removably coupled to the wound treatment apparatus.

13. The bandage system of claim 12, wherein the first sheet has a first outer perimeter, the second sheet has a second outer perimeter, and the first outer perimeter is aligned with the second outer perimeter.

14. The bandage system of claim 12, wherein the foam pad is adjacent the second sheet.

15. A bandage system for use with a wound treatment apparatus having a negative pressure source, the bandage system comprising a first sheet configured to overlie a wound such that the first sheet is adjacent to the wound, and a top sheet distinct from the first sheet and overlying the first sheet, the first sheet having a plurality of discrete apertures configured to communicate negative pressure established by the negative pressure source to the wound, wherein the bandage system further comprises a foam pad and a tube spaced-apart from the foam pad such that the tube does not extend through the foam pad, the tube configured to be removably coupled to the wound treatment apparatus.

16. The bandage system of claim 15, wherein at least some of the plurality of discrete apertures in the first sheet are arranged to lie on a circle.

17. The bandage system of claim 15, wherein the bandage comprises a second sheet coupled to the first sheet and located between the first sheet and the top sheet, and the second sheet has at least one discrete aperture, but has a fewer number of discrete apertures than the first sheet.

18. The bandage system of claim 17, wherein the first sheet has a first outer perimeter, the second sheet has a second outer perimeter, and the first outer perimeter is aligned with the second outer perimeter.

19. The bandage system of claim 15, wherein the first sheet is clear.

20. The bandage system of claim 15, wherein the first sheet is flexible.

21. The bandage system of claim 15, wherein the first sheet is made from a material that is generally water and air impermeable.

22. The bandage system of claim 15, wherein the top sheet does not have any openings therethrough to provide a vacuum space above the wound.

23. The bandage system of claim 15, further comprising an element configured to adhere to healthy skin adjacent the wound, the bandage system comprises a second sheet located between the first sheet and the top sheet, the first sheet is coupled to the second sheet, and the first sheet is coupled to the element.

24. The bandage system of claim 15, wherein at least some of the plurality of discrete apertures in the first sheet are adapted to communicate fluid from a fluid source of the wound treatment apparatus to the wound.

25. The bandage system of claim 15, wherein the foam pad is positioned between the first sheet and the top sheet and the tube is in communication with the plurality of discrete passageways of the first sheet.

26. A bandage system for use with a wound treatment apparatus having a negative pressure source, the bandage system comprising a first sheet with a plurality of discrete passageways adapted to communicate negative pressure established by the negative pressure source to a wound, a second sheet distinct from the first sheet and coupled to the first sheet, an element coupled to the second sheet that is configured to adhere to healthy skin adjacent the wound, a foam pad positioned between the first sheet and the second sheet, and a vacuum tube spaced-apart from the foam pad such that the vacuum tube does not extend through the foam pad, the vacuum tube configured to be removably coupled to the wound treatment apparatus, wherein the first sheet and the second sheet are each made from a material different from the foam pad.