Wound covering

• US 7,928,281 B2
• Filed: 10/09/2007
• Issued: 04/19/2011
• Est. Priority Date: 06/19/1992
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: Arizant Technologies LLC (3M Company)
• Inventors: Augustine, Scott D.
• Primary Examiner(s): Lewis; Kim M
• Application Number:
  US11/973,406
• Publication Number:
  US 20080058690A1
• Time in Patent Office: 1,288 Days
• Field of Search: 604/289, 604/290, 604304-306, 602/2, 602 41- 59
• US Class Current: 602/48
• CPC Class Codes: A61F 13/0203 with fluid retention members

Abstract

A non-contact wound covering for covering a wound includes a peripheral sealing ring. The peripheral sealing ring is covered by a barrier layer and this assembly is attached to the skin with an adhesive. The barrier layer and peripheral sealing ring together define a treatment volume over the wound. Treatment fluid is introduced into the treatment volume through an inlet, and is exhausted therefrom through an outlet or an exhaust filter.

Claims

1. A wound covering for covering and applying a treatment fluid to a wound to be treated, comprising:

a peripheral sealing ring defining a cavity to encircle the wound;

means on a lower surface of the peripheral sealing ring for attaching the wound covering to skin around the wound;

a barrier layer supported on an upper surface of the peripheral sealing ring, spanning the cavity, to be spaced apart from the wound by the peripheral sealing ring;

the peripheral sealing ring and the barrier layer together defining a treatment volume in the cavity in which the barrier layer seals the treatment volume over the wound when the wound covering is attached to skin;

an inlet positioned to conduct treatment fluid over the upper surface of the peripheral sealing ring, into the treatment volume; and

,

means for exhausting treatment fluid from the treatment volume.

2. The wound covering of claim 1 further including means coupled to the inlet for providing a flow of treatment fluid into the treatment volume, wherein the treatment fluid comprises a mixture of gases including oxygen.

3. The wound covering of claim 1 further including means coupled to the inlet for providing a flow of treatment fluid into the treatment volume, wherein the treatment fluid comprises a mixture of gases including nitric oxide.

4. The wound covering of claim 1 further including means coupled to the inlet for providing a flow of treatment fluid into the treatment volume, wherein the treatment fluid comprises a mixture of gases including water vapor.

5. The wound covering of claim 1 further including means coupled to the inlet for providing a flow of treatment fluid into the treatment volume, wherein the treatment fluid comprises a mixture of gases including one or more medications.

6. The wound covering of claim 1 further including means coupled to the inlet for providing a flow of treatment fluid into the treatment volume, wherein the treatment fluid includes a liquid.

7. The wound covering of claim 1, wherein the means for exhausting is an exhaust filter on the peripheral sealing ring.

8. The wound covering of claim 1, wherein the means for exhausting is an exhaust filter in the barrier layer.

9. The wound covering of claim 1 wherein the peripheral sealing ring is a polymeric foam ring.

10. The wound covering of claim 9, further including a medicament absorbed in to the polymeric foam ring.

11. The wound covering of claim 10, wherein the medicament is nitric oxide.

12. The wound covering of claim 1, wherein the means for attaching is adhesive on the lower surface, further including a release liner on the adhesive.