Absorbent foam wound dressing

• US 6,787,682 B2
• Filed: 11/05/2001
• Issued: 09/07/2004
• Est. Priority Date: 11/05/2001
• Status: Expired due to Fees

• Current Assignee: Hollister Incorporated
• Original Assignee: Hollister Incorporated
• Inventors: Gilman, Thomas H.
• Primary Examiner(s): Lewis, Kim M.
• Application Number:
  US10/007,445
• Publication Number:
  US 20030088202A1
• Time in Patent Office: 1,037 Days
• Field of Search: 602/41-59, 128/888, 128/889, 604/304-308, 424/443-449
• US Class Current: 602/58
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention layer
• CPC Class Codes: A61F 2013/0074 containing foams

Abstract

A highly conformable and absorbent polymeric foam wound dressing is disclosed, such dressing being particularly useful in preventing pooling of fluid in a draining wound while at the same time maintaining surrounding skin surfaces in a relatively dry state.

Claims

1. A wound dressing comprising a foam layer of soft, hydrophilic polymeric foam having bodyside and backside surfaces;

a base layer of elastomeric film adhered to said bodyside surface of said foam layer;

said base layer having at least one generally centrally located opening therein exposing said foam layer through said opening;

said base layer having a bodyside surface coated with a hypoallergenic pressure-sensitive adhesive for adhesively contacting wound and surrounding skin surfaces at a wound site; and

a vapor-permeable liquid-impermeable elastomeric backing layer extending over said backside surface of said foam layer;

said backing layer being unattached to said backside surface of said foam layer over said centrally located opening of said base layer.

2. The wound dressing of claim 1 in which said backing layer includes a peripheral edge portion secured to said base layer about said foam layer.

3. The wound dressing of claim 1 or 2 in which said foam layer is composed of a soft hydrophilic polyurethane foam.

4. The wound dressing of claim 1 or 2 in which said elastomeric film of said base layer is gas-permeable and liquid-impermeable.

5. The wound dressing of claim 1 or 2 in which a flexible and stretchable foraminous layer extends over the surface of said backing layer opposite from said foam layer.

6. The wound dressing of claim 5 in which said flexible foraminous layer is formed of soft, stretchable polymeric foam.

7. The wound dressing of claim 5 in which said foraminous layer has a multiplicity of openings of regular shape for viewing said backing layer therethrough.

8. The wound dressing of claim 7 in which said openings in said flexible foraminous layer are generally rectangular in shape and are arranged in a grid pattern.