WOUND TREATMENT APPARATUS

• US 20070233022A1
• Filed: 06/11/2007
• Published: 10/04/2007
• Est. Priority Date: 08/07/1998
• Status: Active Grant

• Current Assignee: KCI Licensing Incorporated (3M Company)
• Original Assignee: Hill-Rom Services Incorporated (Baxter International Inc.)
• Inventors: Price, James, Howard, John, Sanderson, Ronald, Henley, Alan, Moses, Leigh, Bessette, Russell
• Granted Patent: US 7,794,438 B2
• Time in Patent Office: Days
• US Class Current: 604/305
• 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 wound treatment apparatus comprising:

a bandage including a wound facing surface configured to face toward a wound and a fluid drainage passageway having an opening adjacent the wound facing surface;

a fluid drainage tube coupled to the fluid drainage passageway;

first and second fluid drainage receptacles coupled to the drainage tube; and

first and second valves coupled between the fluid drainage tube and the first and second fluid drainage receptacles, respectively.

2. The apparatus of claim 1, wherein the valves are pinch valves.

3. The apparatus of claim 1, further comprising a sensor coupled to the first fluid drainage receptacle to provide a signal indicative of an amount of fluid in the receptacle.

4. A bandage for use with a wound treatment apparatus having a negative pressure source, the bandage comprising a first sheet overlying a wound and located adjacent to it and a top sheet overlying the first sheet, the first sheet having a plurality of discrete passageways overlying the wound and adapted to communicate negative pressure established by the negative pressure source to the wound.

5. The bandage of claim 4, 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 of claim 4, wherein the first sheet is clear.

7. The bandage of claim 4, wherein the first sheet is flexible.

8. The bandage of claim 4, wherein the first sheet is impermeable.

9. The bandage of claim 4, further comprising an element that adheres to healthy skin adjacent the wound and the first sheet is coupled to the element.

10. The bandage of claim 4, 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 wound treatment apparatus of claim 4, wherein the top sheet does not have any openings therethrough to provide a vacuum space above the wound.

12. A bandage for use with a wound treatment apparatus having a negative pressure source, the bandage comprising a first sheet and a second sheet, the first sheet overlying a wound and located adjacent to it, the first sheet having a plurality of discrete passageways adapted to communicate negative pressure established by the negative pressure source to the wound, the second sheet having at least one discrete passageway that communicates with at least one of the plurality of discrete passageways of the first sheet.

13. The bandage 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. A bandage for use with a wound treatment apparatus having a negative pressure source, the bandage 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 coupled to the first sheet, and an element coupled to the second sheet that adheres to healthy skin adjacent the wound.

15. A bandage for use with a wound treatment apparatus having a negative pressure source, the bandage comprising a first sheet overlying a wound and located adjacent to it and a top sheet overlying the first sheet, the first sheet having a plurality of discrete apertures overlying the wound and adapted to communicate negative pressure established by the negative pressure source to the wound.

16. The bandage 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 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 lesser number of discrete apertures than the first sheet.

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

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

21. The bandage of claim 15, wherein the first sheet is impermeable.

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

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

24. The bandage 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.