Vacuum therapy and cleansing dressing for wounds

• US 20050131327A1
• Filed: 02/04/2005
• Published: 06/16/2005
• Est. Priority Date: 11/29/2000
• Status: Active Grant

• Current Assignee: KCI Licensing Incorporated (3M Company)
• Original Assignee: KCI Medical Resources Unlimited Company (3M Company)
• Inventors: Lockwood, Jeffrey S., Petrosenko, Robert, Risk, James R. Jr.
• Granted Patent: US 7,988,680 B2
• Time in Patent Office: Days
• US Class Current: 602/41
• 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: A61F 2013/00174 possibility of applying pressure
• CPC Class Codes: A61F 2013/00536 for draining or irrigating wounds
• 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 1/912 Connectors between dressing and drainage tube
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/918 for multiple suction locations
• 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 wound dressing member is provided for use in a vacuum bandage connected to a vacuum source. The wound dressing member is also provided for use with a wound having a wound surface. The wound dressing member includes a wound facing surface adapted to be in contact with and generally conform to the wound surface and a plurality of discrete holes formed in the wound facing surface. The member further includes a port configured to communicate with the vacuum source and with each hole formed in the wound facing surface. The wound dressing member further includes a stand-off having interconnected portions coupled to the wound facing surface and configured to provide a space between the wound facing surface and the wound surface.

Claims

1-19. -19. (canceled)

20. A method of forming a member of a vacuum bandage for use with a wound bed, the method comprising:

providing a wound contacting layer,

molding a cover from a semi-cured silicone, and

heat-sealing the cover to the wound contacting layer.

21. The method of claim 20, further comprising providing a connecter and heat sealing the connecter to the cover.

22. The method of claim 21, further comprising molding the wound contacting layer and the connecter from a fully-cured silicone.

23. The method of claim 20, further comprising molding the wound contacting layer from a fully-cured silicone.

24. A method for treating an open wound having a wound surface comprising the steps of:

providing a flexible member fabricated from non-porous material to have a wound contacting surface with holes in the surface, a port adapted to communicate with a vacuum source, and passageways providing communication between the holes and the port,

placing the member into contact with the wound to functionally and physically interface with the wound surface, and

connecting the port to a vacuum source to provide suction at each of the holes.

25. The method of claim 24, further comprising the step of irrigating the wound surface by connecting the port to a source of irrigation fluid to be expelled through the holes onto the wound surface.

26. The method of claim 24, further comprising the step of covering the wound and the member adjacent the wound to provide a space in which a vacuum is established by the vacuum source.

27. A method for treating a wound, the method comprising:

placing in contact with the wound a wound dressing member that is capable of remaining on top of granulations formed during healing of the wound without connecting to the granulations,

sealing a film to a patient'"'"'s healthy skin about the wound and wound dressing member to create a sealed environment above the wound surface, and

coupling the member to a vacuum source to create a negative pressure above the wound and maintaining the negative pressure above the wound.