Air cure bandage

• US 4,972,829 A
• Filed: 11/23/1988
• Issued: 11/27/1990
• Est. Priority Date: 11/23/1988
• Status: Expired due to Fees

• Current Assignee: Pacific Exploration Incorporated
• Original Assignee: Richard P. Knerr
• Inventors: Knerr, Richard P.
• Primary Examiner(s): Cannon, Alan
• Assistant Examiner(s): Paul, N.
• Application Number:
  US07/275,769
• Time in Patent Office: 734 Days
• Field of Search: 128/155, 128/156, 128/849, 128/850, 128/888, 128/889, 128/890, 128/894, 604/369
• US Class Current: 602/52
• CPC Class Codes: A61F 13/0206 with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
• CPC Class Codes: A61F 13/0226 characterised by the support layer
• CPC Class Codes: A61F 13/0246 characterised by the skin-adhering layer
• CPC Class Codes: A61F 15/008 Appliances for wound protecting, e.g. avoiding contact between wound and bandage corn plasters A61F13/063
• CPC Class Codes: A61F 2013/00387 skin protection
• CPC Class Codes: A61F 2013/00834 as a frame
• CPC Class Codes: A61F 2013/00859 with macroscopic openings

Abstract

A protective bandage is provided having a circumferentially shaped foam base topped with a protective grill or screen. The grill is attached to the foam base either mechanically or with an adhesive bonding sheet. The underside of the foam base is coated with an adhesive for attachment to the skin.

The resulting bandage provides protection from physical trauma, enhances the flow of air to the wound, and allows application of medication to the wound without the need for bandage removal.

Claims

1. A protective apparatus for promoting healing of a wound, comprising:

a frame-like foam base enclosing an inner region of predetermined geometric shape, said frame having an upper face, a lower face, and a predetermined thickness sufficient to create an enclosure of a predetermined volume surrounding the wound on all sides;

a grill comprising a network of more than two crossed tines defining a plurality of openings, attached to the upper face of the foam base and disposed over the inner region;

means for attaching the grill to said upper face; and

means for attaching the foam base around a wound, whereby flow of air into the enclosure surrounding the wound is facilitated.

2. The apparatus as claimed in claim 1, wherein the grill is constructed of a semi-rigid material.

3. The apparatus as claimed in claim 2, wherein the means for attaching the grill to the upper face of the foam base comprises an adhesive material.

4. The apparatus as claimed in claim 3, wherein the adhesive material comprises a bonding sheet of a shape similar to the foam base such that the grill is disposed between the bonding sheet and the upper face of the foam base.

5. The apparatus as claimed in claim 4, wherein the means for attaching the foam base around a wound comprises an adhesive coating on at least some portion of the lower face of the foam base.

6. The apparatus as claimed in claim 5, further comprising means for absorbing wound discharge.

7. The apparatus as claimed in claim 6, wherein the means for absorbing wound discharge comprises:

an absorbent inset of a predetermined shape surrounded by the foam base; and

means for attaching the inset to the foam base.

8. The apparatus as claimed in claim 7, wherein the means for attaching the absorbent inset to the foam base comprises an adhesive material.

9. The apparatus as claimed in claim 6, further comprising:

an air permeable covering and means for attaching the covering to the grill.

10. The apparatus as claimed in claim 9, wherein the means for attaching the covering to the grill comprises an adhesive material.

11. The apparatus as claimed in claim 1, wherein the means for attaching the grill to the upper face of the foam base is mechanical.

18. The apparatus as claimed in either claim 11 or claim 16, further comprising:

an air permeable covering and means for attaching said covering to the grill.

19. The apparatus as claimed in claim 18, wherein the means for attaching is an adhesive material.

12. An apparatus for protecting a wound on an appendage of a human or animal, comprising:

at least one foam ring through which an appendage can be inserted, each foam ring having an inner surface, an outer surface and a predetermined thickness;

a generally cylindrical grill having an open end and a closed end and defining a plurality of openings attached to the outer surface of each foam ring, the grill and foam ring cooperating to form an enclosure of a predetermined volume surrounding the wound on all sides and to space the grill a predetermined distance away from the appendage;

means for attaching the grill to the outer surface of each foam ring; and

means for attaching each foam ring to said appendage, whereby flow of air to the wound is facilitated.

13. The apparatus as claimed in claim 12, wherein the grill is constructed of a semi-rigid material.

14. The apparatus as claimed in claim 13, wherein the means for attaching the grill to the outer surface of each foam ring is an adhesive material.

15. The apparatus as claimed in claim 14, wherein the adhesive material comprises a bonding ring overlying the grill, such that the grill is secured between the bonding ring and the outer surface of the foam ring.

16. The apparatus as claimed in claim 15, wherein the means for attaching each foam ring to an appendage comprises an adhesive coating on the inner surface of the ring.

17. The apparatus as claimed in claim 16, further comprising means for absorbing wound discharge.