IP Library Granted Patent US 8,372,022
Granted Patent B2
US 8,372,022 · App. 12/475,002 · Granted Feb 12, 2013

Negative pressure treatment system with heating and cooling provision

Inventors: Raymond R. Hannigan (San Antonio, TX); James R. Leininger (San Antonio, TX); Charles I. Biltz, Jr. (San Antonio, TX); Frank Dilazzaro (San Antonio, TX); Christopher Fashek (San Antonio, TX); Wayne J. Schroeder (San Antonio, TX); Royce W. Johnson (Universal City, TX)
Assignee: KCI Licensing, Inc.
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,372,022
App. No.
12/475,002
Granted
Feb 12, 2013
Kind
B2
Abstract

A method, and apparatus for the controlled acceleration, and/or retardation of the body's inflammatory response generally comprises a foam pad for insertion substantially into a wound site, a heating, a cooling pad for application over the wound site, a wound drape or sealing enclosure of the foam pad, the heating, and cooling pad at wound site. The foam pad is placed in fluid communication with a vacuum source for promotion of the controlled acceleration or retardation of the body's inflammatory response. The heating, and cooling provision controls the local metabolic function as part of the inflammatory response.

Claims (42)

1. A method for treating a wound comprising:

securing a porous pad and a breathable layer in a sealed environment adjacent the wound;

maintaining a reduced pressure in the sealed environment;

circulating a fluid through fluid channels in the breathable layer while transporting moisture away from the wound through apertures in the breathable layer; and

regulating the temperature of the wound with the circulated fluid.

2. The method according to claim 1 further comprising alternating the temperature of the fluid between temperatures greater than the temperature of the wound and temperatures less than the temperature of the wound.

3. The method according to claim 1 further comprising providing the fluid at a temperature greater than the temperature of the wound.

4. The method according to claim 1 further comprising providing the fluid at a temperature less than the temperature of the wound.

5. The method according to claim 1 further comprising distributing reduced pressure at the wound through the porous pad.

6. The method according to claim 1 , wherein the fluid is water.

7. The method according to claim 1 further comprising:

alternating the temperature of the fluid between temperatures greater than the temperature of the wound and temperatures less than the temperature of the wound; and

distributing reduced pressure at the wound through the porous pad.

8. The method according to claim 1 further comprising:

placing the breathable layer in contact with the porous pad.

9. The method according to claim 1 further comprising:

placing the breathable layer in contact with the porous pad; and

covering the breathable layer and the porous pad with a drape to form the sealed environment.

10. The method according to claim 1 further comprising:

covering the porous pad with a drape to form the sealed environment; and

placing the breathable layer over the drape such that the drape is disposed between the porous pad and the breathable layer.

11. The method according to claim 10 , wherein the drape has an adhesive.

12. The method according to claim 1 further comprising:

applying a reduced pressure to the wound though the apertures.

13. The method according to claim 1 , wherein the breathable layer has a pair of flexible sheets connected to form the fluid channels between the sheets to receive the fluid, the pair of flexible sheets further including the apertures.

14. The method according to claim 1 , wherein the pair of flexible sheets are connected by RF welds.

15. The method according to claim 1 , wherein the fluid channels are continuous.

16. The method according to claim 1 , wherein the fluid channels include an inlet configured for connection to a supply tube and an outlet configured for connection to a drainage tube.

17. The method according to claim 1 further comprising:

regulating the temperature of the wound with the circulated fluid based on an inflammatory response of the wound.

18. A method for treating a wound comprising:

placing a porous pad adjacent the wound;

placing a thermal control element in contact with the porous pad;

covering the thermal control element and the porous pad with a drape;

applying a reduced pressure to the porous pad;

circulating a fluid through fluid channels in the thermal control element; and

allowing moisture transpiration from the wound through apertures in the thermal control element.

19. The method according to claim 18 , further comprising:

regulating the temperature of the wound with the circulated fluid.

20. The method according to claim 18 , wherein the thermal control element is at least one of a heating element and a cooling element.

21. The method according to claim 18 further comprising:

coupling a pair of sheets using RF welds to form the thermal control element.

Assignments (6)
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 Jul 24, 2014
From: KINETIC CONCEPTS, INC.
To: KCI LICENSING, INC.
Reel/Frame 033382/0497 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 28, 2014
From: HANNIGAN, RAYMOND R.; LEININGER, JAMES R.; BILTZ, CHARLES I., JR.; DILAZZARO, FRANK; FASHEK, CHRISTOPHER; JOHNSON, ROYCE W.; SCHROEDER, WAYNE J.
To: KINETIC CONCEPTS, INC.
Reel/Frame 032561/0756 →
Continuity (4)
Division 11545142 · Oct 10, 2006
Continuation 09937937
Provisional Application 60127596 · Apr 2, 1999
Related Publication 20090240216A1 · Sep 24, 2009