IP Library Granted Patent US 9,445,947
Granted Patent B2
US 9,445,947 · App. 14/171,418 · Granted Sep 20, 2016

Abdominal wound dressing

Inventors: Kenneth Hunt (Wimbourne, GB); Keith Heaton (Dorset, GB); Wayne Schroeder (San Antonio, TX)
Assignee: KCI Licensing, Inc.
A61F13/00042A61F13/00068A61L15/24A61L15/26A61L15/425A61M1/0088A61M27/00A61F2013/0028
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Quick Facts
Patent No.
US 9,445,947
App. No.
14/171,418
Granted
Sep 20, 2016
Kind
B2
Abstract

An abdominal wound dressing and methods of use are described that enable the application of negative pressure to the wound site in a healing manner while also limiting the formation of adhesions that would prevent the removal of the dressing. The dressing includes a layer of porous foam material enclosed by sheets of elastomeric material punctuated by a number of appropriately placed holes. Multiple layers of porous foam may also be used. A suction tube connector is provided on an upper surface of a layer of foam for connection to a negative pressure source. At least one layer of foam is enclosed in elastomeric material and is placed in direct contact with the tissue within the open wound. Fluids are drawn by negative pressure through the holes positioned in the elastomeric envelope and through the foam.

Claims (6)

1. A method for healing a wound, said method comprising:

providing a first flexible film having a plurality of holes therein and placing the first flexible film in contact with the wound, the first flexible film having a first, patient-facing side and a second side;

sealing a periphery of a second flexible film to a periphery of the first flexible film to form an envelope, the second flexible film having a plurality of holes;

sealing the envelope within the wound with a drape positioned in contact with an area of skin surrounding the wound; and

providing a negative pressure to the envelope for drawing a flow of exuded fluids from the wound.

2. The method of claim 1 , wherein the plurality of holes of the first flexible film are offset from the plurality of holes of the second flexible film.

Assignments (5)
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Nov 7, 2019
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: KCI USA, INC.; KCI LICENSING, INC.
Reel/Frame 050966/0547 →
RELEASE OF SECURITY INTEREST REEL/FRAME 040098/0268 Recorded Feb 8, 2017
From: WILMINGTON TRUST
To: KCI USA, INC.
Reel/Frame 041666/0320 →
LIMITED THIRD LIEN INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Oct 7, 2016
From: KCI USA, INC.; LIFECELL CORPORATION; KCI LICENSING, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 040291/0237 →
SECOND LIEN SECURITY AGREEMENT Recorded Sep 21, 2016
From: KCI USA, INC.; LIFECELL CORPORATION; KCI LICENSING, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 040098/0268 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2016
From: HEATON, KEITH; HUNT, KENNETH; SCHROEDER, WAYNE
To: KCI LICENSING, INC.
Reel/Frame 037841/0668 →
Priority Claims (1)
GB 0011202.9 · May 9, 2000 · national
Continuity (5)
Continuation 13466917 · May 8, 2012
Continuation 13113914 · May 23, 2011
Division 12127668 · May 27, 2008
Continuation 10275671
Related Publication 20140221947A1 · Aug 7, 2014