Wound treatment device

• US 7,922,678 B2
• Filed: 11/07/2008
• Issued: 04/12/2011
• Est. Priority Date: 11/07/2007
• Status: Active Grant

• Current Assignee: AOTI, Inc.
• Original Assignee: AOTI, Inc.
• Inventors: Hovorka, George
• Primary Examiner(s): Brown; Michael A.
• Application Number:
  US12/291,342
• Publication Number:
  US 20090143721A1
• Time in Patent Office: 886 Days
• Field of Search: 602/13, 602/23, 602/58, 128/202.12, 128/DIG.20, 606/201, 606/202
• US Class Current: 602/13
• CPC Class Codes: A61G 10/00 Treatment rooms or enclosures for medical purposes baby incubators, couveuses A61G11/00; devices for gas baths with ozone, hydrogen or the like A61H33/14 ; for isolating individuals from external stimuli A61M21/0094 ; containers or portable cabins for affording breathing protection in general A62B31/00
• CPC Class Codes: A61G 10/04 Oxygen tents ; Oxygen hoods
• CPC Class Codes: A61H 9/0078 with intermittent or alternately inflated bladders or cuffs mattresses for preventing bed-sores with alternated pressurized chambers A61G7/05776

Abstract

A limb wound treatment device is described having a first end, a second end and an interior therebetween for accommodating a treatment gas. The device can include a flexible housing that can be inflated or a rigid housing. The first end can include an inflatable cuff seal for hermetically sealing against the limb being treated. The second end can include a closed end or an access port that is releasably sealed with a clamping mechanism. Further, the device can include a controller that can inflate that housing, inflate the cuff seal and provide treatment gas to the interior, in response to pressures within the cuff seal and the housing. Further, the device can accommodate different types of wound treatments, such as hyperbaric therapy, compression therapy or negative pressure therapy.

Claims

1. A wound treatment device, comprising:

a housing having a first open end for receiving a limb of a patient and a second closed end forming a chamber therebetween, wherein a portion of the housing is constructed from at least a flexible first sheet comprising a composite layer, said composite layer comprising a first polymer gas impermeable material layer coated with a second polymer gas impermeable material layer selected from the group consisting of ethyl vinyl acetate and polyethylene heat sealable material whereby said flexible first sheet is gas impermeable.

2. The device of claim 1, wherein the housing comprises said first sheet attached to a flexible second sheet at respective edges of the first and second sheets.

3. The device of claim 2, wherein a portion of the first and second sheets are attached to each other forming a plurality of inflatable air passages therebetween.

4. The device of claim 2, wherein a portion of the first sheet and a portion of the second sheet form an inflatable cuff adapted for sealing against the limb of a patient.

5. The device of claim 1, further comprising an inflatable cuff at the first open end.

6. The device of claim 5, wherein the inflatable cuff is preformed and attached to the first open end.

7. The device of claim 1, wherein said first polymer gas impermeable material layer comprises polyester.

8. The device of claim 1, wherein said second polymer gas impermeable material layer comprises ethyl vinyl acetate.

9. The device of claim 1, wherein said first polymer gas impermeable material layer comprises nylon.

10. The device of claim 5, wherein the inflatable cuff comprises an outer wall, an inner wall and a sidewall coupling the inner and outer walls, thereby forming an inflatable gap therebetween.

11. The device of claim 5, further including a device for inflating said housing and said inflatable cuff.

12. A wound treatment device, comprising:

a flexible housing having a wall formed from at least a flexible first sheet comprising a composite layer of a nylon gas impermeable layer coated with a gas impermeable ethyl vinyl acetate layer, said first sheet being gas impermeable, the housing further comprising;

a first closed end;

a second end remote from the first end having an inflatable cuff for sealing against a limb; and

a treatment chamber disposed between the first and second ends for accommodating a treatment gas.

13. The device of claim 12, wherein the flexible housing comprises said first sheet attached to a flexible second sheet at respective edges of the first and second sheets.

14. The device of claim 12, wherein the flexible housing further comprises inflatable air passages.

15. The device of claim 12, wherein the inflatable cuff comprises an outer wall, an inner wall and a sidewall coupling the inner and outer walls, thereby forming an inflatable gap therebetween.

16. The device of claim 15, wherein the inflatable cuff includes a first end adjacent the sidewall and a second end remote therefrom, wherein the second sidewall is attached to the second end of the housing.

17. The device of claim 12, further including a device for inflating said housing and said inflatable cuff.