Wound treatment apparatus

• US 6,458,109 B1
• Filed: 08/05/1999
• Issued: 10/01/2002
• Est. Priority Date: 08/07/1998
• Status: Expired due to Term

• Current Assignee: KCI Licensing Incorporated (3M Company)
• Original Assignee: Hill-Rom Services Incorporated (Baxter International Inc.)
• Inventors: Howard, John, Bessette, Russell W., Price, James H., Henley, Alan Wayne, Moses, Leigh Marie, Sanderson, Ronald Leslie
• Primary Examiner(s): Lewis, Kim M.
• Application Number:
  US09/369,113
• Time in Patent Office: 1,153 Days
• Field of Search: 604/289, 604/290, 604/291, 604/304, 604/305, 604/313, 602/41-59, 128/888, 128/889
• 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 wound treatment apparatus for treatment of surface wounds with a bandage system configured to control the environment adjacent the wound. The apparatus includes a bandage configured to cover a wound and provide a seal about the perimeter of the wound and cavity over the wound. A fluid supply conduit and a fluid drainage conduit are each in communication with the cavity. A nebulizer is coupled to the supply conduit to supply medicinal fluid to the wound. A waste receptacle is coupled to the drainage conduit to remove the fluid away from the wound.

Claims

1. A wound treatment apparatus comprising:

a bandage configured to cover a wound and provide a seal about the perimeter of the wound, the bandage providing a cavity over the wound, a fluid supply in communication with the cavity, a fluid drainage in communication with the cavity, and a nebulizer coupled to the fluid supply.

2. The apparatus of claim 1, further comprising a liquid medication pump coupled to the fluid supply.

3. The apparatus of claim 2, further comprising an oxygen supply coupled to the fluid supply.

4. The apparatus of claim 3, further comprising an air supply, and a valve system, the valve system having a first input port coupled to the oxygen supply, a second input port coupled to the air supply, and an output port coupled to the medicinal fluid supply device.

5. The apparatus of claim 4, wherein the valve system is a dual input selector valve.

6. The apparatus of claim 1, further comprising a vacuum pump coupled to the fluid drainage, said bandage providing a relatively closed space above the wound to be held at a negative pressure.

7. The apparatus of claim 1, further comprising a recirculating, temperature regulated fluid tube coupled to the bandage.

8. The apparatus of claim 7, further comprising a heater and a circuitous fluid pathway coupled to the recirculating, temperature regulated fluid tube.

9. The apparatus of claim 8, further comprising a temperature sensor coupled to the recirculating, temperature regulated fluid tube.

10. The apparatus of claim 9 further comprising a controller and a cut-off valve, the controller being coupled to the temperature sensor and the cut-off valve, the cut-off valve being coupled to the fluid supply tube, and the controller being configured to activate the cut-off valve based on a signal from the temperature sensor.

11. The apparatus of claim 1, farther comprising a pressure sensor coupled to the fluid supply tube.

12. The apparatus of claim 11, further comprising a pressure sensor coupled to the fluid supply tube, and a controller coupled to the pressure sensor and a display, the controller being configured to cause an indicia to appear on the display based on a value received by the controller from the pressure sensor.

13. The apparatus of claim 11, further comprising a controller coupled to the pressure sensor and configured to signal an alarm if a value received by the controller from the pressure sensor exceeds a predetermined threshold.

14. The apparatus of claim 11, wherein the sensor is an acoustic sensor.

15. The apparatus of claim 11, further comprising a controller coupled to the sensor and configured to determine if a nebulizer fluid reservoir contains a fluid based on values received by the controller from the sensor.

16. The apparatus of claim 1, further comprising a gasket configured to be coupled between the bandage and a skin surface about the wound.

17. The apparatus of claim 1, wherein the bandage comprises a two-piece bandage assembly including a supply bandage configured to seal the wound and provide the said cavity and a drainage bandage configured to be coupled to the supply bandage.

18. The wound treatment apparatus of claim 17, wherein the fluid delivery conduit has a flare.

19. The wound treatment apparatus of claim 17, in which said bandage covers the fluid delivery and drainage conduits forming a closed space over and about the wound.

20. The apparatus of claim 1, wherein the bandage comprises a fluid delivery conduit, said conduit being configured to be positioned near a wound to deliver fluid to the wound, and a fluid drainage conduit having at least one fluid collection opening, the conduit being positioned about the wound.

21. The apparatus of claim 1, further comprising a sensor coupled to the nebulizer and configured to provide a signal indicative of an amount of fluid within the nebulizer.

22. The apparatus of claim 1, further comprising an electronic control system coupled to the nebulizer to control nebulizer output.

23. A wound treatment apparatus comprising:

a first bandage configured to cover a wound, the first bandage including a first surface configured to face toward the wound, at least one fluid delivery passageway through the first surface, and at least one fluid drainage passageway through the first surface;

a fluid delivery conduit in communication with the fluid delivery passageway;

a second bandage configured to be coupled with the first bandage, the second bandage including a second surface configured to face toward the first bandage and provide a fluid space between the surfaces; and

a fluid drainage conduit in communication with the fluid drainage passageway.

24. The apparatus of claim 23, wherein the at least one delivery passageway comprises a plurality of delivery passageways.

25. The apparatus of claim 24, wherein the plurality of delivery passageways is arranged in a substantially circular pattern.

26. The apparatus of claim 23, further comprising a fluid drainage receptacle coupled to the fluid drainage tube.

27. The apparatus of claim 23, further comprising a filter coupled to the fluid drainage receptacle.

28. The apparatus of claim 23, wherein the first bandage comprises a first flexible relatively impermeable sheet including the first surface, and the second bandage comprises a second flexible relatively impermeable sheet including the second surface, said second bandage providing a close space over the wound to be held at a negative pressure.

29. The apparatus of claim 24, further comprising a gasket configured to be coupled between the bandage and a perimeter of healthy tissue surrounding the wound to provide a relatively closed space about the wound to be held at a negative pressure.

30. The apparatus of claim 23, wherein the fluid space is segregated into a first chamber and a second chamber, wherein the first chamber is formed about the fluid delivery passageway and the second chamber is formed about the fluid drainage passageway.

31. The apparatus of claim 30, wherein the fluid delivery conduit is in communication with the first chamber and the fluid drainage conduit is in communication with the second chamber.

32. A wound treatment apparatus comprising:

a bandage including a wound facing surface configured to face toward the 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.

33. The apparatus of claim 32, wherein the valves are pinch valves.

34. The apparatus of claim 32, further comprising a sensor coupled to the first fluid drainage receptacle to provide a signal indicative of an amount of fluid in the receptacle.

35. A wound treatment apparatus comprising:

a cover bandage located adjacent a wound and provide a seal on healthy skin tissue about the perimeter of the wound, said cover to provide a relatively closed space about the wound to be held at negative pressure;

a fluid supply conduit fitted between the cover bandage and healthy skin tissue near the wound; and

a fluid drainage conduit having at least one fluid drainage opening, fitted between the cover bandage and healthy skin tissue and positioned on healthy skin tissue about the wound and the fluid supply.

36. The apparatus of claim 35, further comprising a medicinal fluid supply in communication with the fluid supply conduit.

37. The apparatus of claim 35, further comprising a drainage receptacle in communication with the fluid supply conduit and a vacuum.

38. The apparatus of claim 35, wherein the fluid drainage conduit has a bendable wire extended through the length of the conduit.

39. A wound treatment apparatus comprising:

a cover bandage providing a closed seal about a wound and a relatively closed cavity over the wound to be held at a negative pressure, the cover bandage including a first surface configured to face toward the wound, at least one fluid delivery passageway through the first surface, and at least one fluid drainage passageway through the first surface, a second surface configured to face toward the first surface and provide a fluid space between the surfaces;

the fluid space is segregated into a first chamber and a second chamber, wherein the first chamber is formed about the fluid delivery passageway and the second chamber is formed about the fluid drainage passageway;

a fluid delivery conduit in fluid communication with the first chamber and the fluid delivery passageway; and

a fluid drainage conduit having at least one fluid drainage opening, in fluid communication with the second chamber and the fluid drainage passageway.

40. The apparatus of claim 39, wherein the fluid drainage conduit is positioned within the first chamber.

41. A wound treatment apparatus comprising:

a cover bandage providing a closed seal about a wound positioned on a joint having a cavity over the wound sized to receive the joint and to be held at a negative pressure, the cover bandage including a first surface configured to face toward the wound, at least one fluid delivery passageway through the first surface, and a second surface configured to face toward the first surface providing a fluid space between the surfaces;

a fluid delivery conduit in fluid communication with the fluid space and the fluid delivery passageway; and

a fluid drainage conduit having at least one fluid drainage opening, in fluid communication with the cavity.

42. The apparatus of claim 41, further comprising a heater and heat sensor coupled to the cover bandage.

43. The apparatus of claim 42, further comprising a heater and heat sensor coupled to the cover bandage and to a nebulizer.