IP Library Granted Patent US 6,994,702
Granted Patent B1
US 6,994,702 · App. 09/544,399 · Granted Feb 7, 2006

Vacuum assisted closure pad with adaptation for phototherapy

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Quick Facts
Patent No.
US 6,994,702
App. No.
09/544,399
Granted
Feb 7, 2006
Kind
B1
Abstract

A modified vacuum assisted wound closure system adapted for concurrent applications of phototherapy having a foam pad for insertion substantially into the wound site and a wound drape for sealing enclosure of the foam pad at the wound site. The foam pad includes an optical pigtail, whereby desired wavelength of light may be directed into and about the wound site. The foam pad is placed in fluid communication with a vacuum source for promotion of fluid drainage. The foam pad is made of a highly reticulated, open-cell polyurethane or polyether foam for good permeability of wound fluids while under suction and is also embedded with an optical pigtail. The optical pigtail comprises an optical fiber that has been formed to fan into a plurality of sections. The fibers of the most distal fanned sections, which are implanted in the foam pad at its base, are provided with tiny optical slots, oriented away from the foam pad and toward the wound site. Each optical slot is made by stripping the cladding from the optical fiber in the desired areas of the fanned sections to form slot radiators. Because it is necessary to trim the foam pad in preparation for therapy, the optical fibers comprise plastics, such as acrylic or styrene. Upon placement of the pad, having the optical pigtail embedded therein, the wound drape is firmly adhered about the VAC therapy suction hose as well as the extending optical fiber to prevent vacuum leakage.

Claims (18)

1. A pad for insertion into a wound bed, said pad comprising:

a reticulated open-cell plasticized acrylmide foam; and

a means for providing phototherapy.

2. A pad for insertion into a wound bed, said pad comprising:

comprises a highly reticulated, open cell foam selected from the group consisting of polyurethane and polyether; and

a means for providing phototherapy.

3. A pad for insertion into a wound bed, said pad comprising:

a highly reticulated open-cell foam; and

an optical pigtail for providing phototherapy.

4. A pad according to claim 3 wherein said pigtail comprising a plurality of optical fibers.

5. A wound healing apparatus comprising:

a reticulated open-cell foam pad for insertion into a wound bed;

a means for providing phototherapy; and

a device enabling the concurrent application of negative pressure therapy and the delivery of electromagnetic energy to a wound, wherein said device comprises a vacuum drainage means, an air tight drape providing a seal about said pad, and an energy integrally incorporated within said pad.

6. A wound healing apparatus according to claim 5 wherein said energy emitter comprises optical slots.

7. A method of providing concurrent negative pressure therapy and phototherapy comprising negative pressure application means having phototherapy means integrated therein.

8. A method according to claim 7 wherein said phototherapy means comprises optical slots.

9. A pad for use in negative pressure therapy also comprise means for providing phototherapy, said pad comprised of a plasticized, acrylamide foam, and wherein said pad transmits electromagnetic radiation in a significant portion of the spectrum between about 300 nm and approximately 1500 nm.

Assignments (16)
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 IN INTELLECTUAL PROPERTY Recorded Feb 6, 2017
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: KCI LICENSING, INC., AS GRANTOR; TECHNIMOTION, LLC, A DELAWARE LIMITED LIABILITY COMPANY, AS GRANTOR; SYSTAGENIX WOUND MANAGEMENT (US), INC., A DELAWARE CORPORATION, AS GRANTOR
Reel/Frame 041395/0044 →
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 →
RELEASE OF SECURITY INTEREST Recorded Sep 21, 2016
From: WILMINGTON TRUST
To: KCI LICENSING, INC.; LIFECELL CORPORATION; KINETIC CONCEPTS, INC.; TECHNIMOTION, LLC
Reel/Frame 040098/0200 →
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 →
SECURITY AGREEMENT Recorded Nov 8, 2011
From: KCI LICENSING, INC.; LIFECELL CORPORATION; TECHNIMOTION, LLC
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 027194/0447 →
SECURITY AGREEMENT Recorded Nov 7, 2011
From: KCI LICENSING, INC.; LIFECELL CORPORATION; TECHNIMOTION, LLC
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 027185/0174 →
TERMINATION OF SECURITY INTEREST IN PATENTS Recorded Jan 7, 2011
From: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
To: KINETIC CONCEPTS, INC.; KCI LICENSING, INC.; LIFECELL CORPORATION
Reel/Frame 025599/0904 →
RELEASE OF SECURITY INTEREST Recorded May 30, 2008
From: CITIBANK, N.A.
To: KINETIC CONCEPTS, INC.; KCI USA, INC.; KCI HOLDING COMPANY, INC.; KCI LICENSING, INC.; KCI INTERNATIONAL, INC.
Reel/Frame 021018/0130 →
SECURITY AGREEMENT Recorded May 29, 2008
From: KINETIC CONCEPTS, INC.; KCI LICENSING, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 021006/0847 →
RELEASE OF SECURITY INTEREST Recorded May 15, 2008
From: BANK OF AMERICA, N.A.
To: KCI LICENSING, INC.
Reel/Frame 020951/0197 →
SECURITY AGREEMENT Recorded Aug 2, 2007
From: KCI LICENSING, INC.; KINETIC CONCEPTS, INC.; KCI USA, INC.; KCI HOLDING COMPANY, INC.; KCI INTERNATIONAL, INC.
To: CITIBANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 019640/0163 →
RELEASE OF SECURITY INTEREST Recorded Jul 31, 2007
From: MORGAN STANLEY & CO., INCORPORATED
To: KCI LICENSING, INC.
Reel/Frame 019617/0356 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 3, 2003
From: KCI LICENSING, INC.
To: MORGAN STANLEY & CO., INCORPORATED
Reel/Frame 014652/0713 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 24, 2002
From: JOHNSON, ROYCE W.
To: KCI LICENSING, INC.
Reel/Frame 013025/0527 →
SECURITY AGREEMENT Recorded Feb 28, 2002
From: KCI LICENSING, INC. (DE CORPORATION)
To: BANK OF AMERICA, N.A.
Reel/Frame 012598/0798 →