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US 2020/0345557 A1Published application
Multilayered primary contact wound dressing
AssigneesKCI USA, Inc., Systagenix Wound Management, Limited
InventorsAlexander WAITE, Katherine A. BOURDILLON
Life of this patent
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Abstract
The wound dressing described herein can be used as a contact layer dressing. The wound dressing can be positioned between a wound bed and a secondary dressing. The wound dressing can include a layered construction. Each of the layers can include a bioresorbable sponge enclosed within a collagen-based film. The wound dressing can include a plurality of fluid channels that enable fluid flow from the wound bed toward the environment-face side of the wound dressing.
Claims20
A wound contact dressing comprising:
- a first bioresorbable sponge configured to degrade over a first predetermined amount of time, the first bioresorbable sponge comprises a first plurality of fluid channels through the first bioresorbable sponge;
- a first collagen-based film substantially covering a first face of the first bioresorbable sponge and lining an internal wall of each of the first plurality of fluid channels;
- a second bioresorbable sponge configured to degrade over a second predetermined amount of time, the second bioresorbable sponge comprises a second plurality of fluid channels through the second bioresorbable sponge;
- a second collagen-based film between the first bioresorbable sponge and the second bioresorbable sponge, the second collagen-based film substantially covering a first face of the second bioresorbable sponge and lining an internal wall of each of the second plurality of fluid channels;
- and
- a third collagen-based film substantially covering a second face of the second bioresorbable sponge.
3 more elements
A wound dressing comprising:
- a backing layer having a first environment-facing side and a first wound-facing side, wherein the backing layer is liquid impermeable and vapor permeable;
- a first collagen-based sponge layer coupled with the backing layer, wherein the first collagen-based sponge layer comprises a first plurality of fluid channels;
- a first film layer substantially covering a wound-facing side of the first collagen-based sponge layer;
- a second collagen-based sponge layer coupled with the first film layer, wherein the second collagen-based sponge layer comprises a second plurality of fluid channels;
- and
- a second film layer substantially covering a wound-facing side of the second collagen-based sponge layer.
3 more elements
Dependencies are inferred from the claim text.