Vacuum therapy and cleansing dressing for wounds

• US 7,867,206 B2
• Filed: 09/19/2003
• Issued: 01/11/2011
• Est. Priority Date: 11/29/2000
• Status: Expired due to Term

• Current Assignee: KCI Licensing Incorporated (3M Company)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Risk, James Robert Jr., Lockwood, Jeffrey S., Petrosenko, Robert
• Primary Examiner(s): KIDWELL, MICHELE M
• Application Number:
  US10/664,535
• Publication Number:
  US 20040064111A1
• Time in Patent Office: 2,671 Days
• Field of Search: 604/289, 604/290, 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

A bandage for use with a vacuum source includes a wound dressing member to be placed in contact with a wound surface and a suction port associated with the wound dressing member. The member is configured with spacers contacting the wound surface to define suction space between the member and the wound surface. The member also includes holes in communication with the suction space. Passageways of the bandage are provided between the suction port and the holes.

Claims

1. A method of treating an open wound having a wound surface located inwardly of healthy skin surrounding the open wound, the method comprising:

providing a relatively thin and flexible member having a wound contacting surface with holes in the wound contacting surface, a port to be attached to a vacuum source, a plurality of channels extending between the holes and the port, and spacers coupled to the wound contacting surface, wherein the spacers and the wound contacting surface are made from the same material,

positioning the member so that at least a portion of the member is inside the open wound having at least some of the spacers resting against the wound surface to space the wound contacting surface of the member apart from the wound surface, and

providing a cover over the member to define a space above the wound surface in which a vacuum is formed when the port is connected to a vacuum source.

2. The method of claim 1, wherein the flexible member is transparent for observing the wound surface.

3. The method of claim 1, further comprising irrigating the wound surface by expelling irrigation fluid through the holes.

4. The method of claim 3, wherein irrigating the wound surface by expelling irrigation fluid through the holes includes irrigating the wound surface by introducing irrigation fluid through a plurality of irrigation ports in communication with the holes of the member.

5. A method of treating an open wound having a wound surface located below healthy skin surrounding the open wound, the method comprising:

positioning a relatively thin and flexible member so that at least a portion of the member is inside the open wound, the member having a wound facing surface with holes in the wound facing surface located inside the open wound below the healthy skin surrounding the open wound, the member also having a single port and passageways connecting each of the holes to the port,

spacing the wound facing surface of the member apart from the wound surface to define a space between the wound surface and the wound facing surface of the member,

covering the wound and the member with a film,

sealing the film to healthy skin surrounding the wound to create a sealed environment between the film and the wound surface,

coupling the port of the member to a vacuum source,

creating a negative pressure in the space between the wound and the surface of the member,

coupling the port of the member to an irrigation source, and

irrigating the wound surface by sending an irrigation liquid from the irrigation source through the member to the wound surface.

6. A method of treating a wound having a wound surface, the method comprising:

providing a relatively thin and flexible member having a wound contacting surface with holes in the wound contacting surface, a port to be attached to a vacuum source, a plurality of channels extending between the holes and the port, and spacers coupled to the wound contacting surface, wherein the spacers and the wound contacting surface are made from the same material,

positioning the member so that at least some of the spacers rest against the wound surface to space the wound contacting surface of the member apart from the wound surface, and

providing a cover over the member to define a space above the wound surface in which a vacuum is formed when the port is connected to a vacuum source.