Shear resistant wound dressing for use in vacuum wound therapy
AssigneeSmith & Nephew, Inc.
InventorsRonald F. Vitaris, Bethany A. Vitaris
Life of this patent
Estimating the term…
Abstract
A cover layer for a vacuum wound therapy dressing includes a backing layer formed from a flexible polymeric membrane and an adhesive layer for affixing the backing layer over a wound bed to provide a substantially fluid-tight seal around a perimeter of the wound bed. The cover layer is reinforced with a reinforcement layer extending to a peripheral region of the backing layer to distribute forces associated with evacuating a reservoir, as defined by or within the cover, to stimulate healing of the wound bed.
Claims24
(canceled)
-12. (canceled)
A negative pressure wound therapy dressing comprising:
- a backing layer configured to be positioned over a wound to define a vacuum reservoir over the wound, the backing layer comprising a peripheral region, a central region, and a hole positioned in the backing layer, wherein a wound facing side of the central region of the backing layer comprises an adhesive coating;
- a silicone adhesive layer positioned beneath the backing layer and extending under the peripheral region of the backing layer and configured to provide a seal around the wound;
- and
- a reinforcement layer affixed to a wound-facing surface of the backing layer and positioned beneath the central region of the backing layer and not to an outer perimeter of the backing layer.
A method of treating a wound with a negative pressure wound therapy dressing, the method comprising:
- placing the dressing over the wound and skin surrounding the wound, the dressing comprising:
- a backing layer comprising a peripheral region, a central region, and a hole positioned in the backing layer, wherein a wound facing side of the central region of the backing layer comprises an adhesive coating;
- a silicone adhesive layer positioned beneath the backing layer and extending under the peripheral region of the backing layer, wherein the silicone adhesive layer is sealed to the skin surrounding the wound;
- and
- a reinforcement layer affixed to a wound-facing surface of the backing layer and positioned beneath the central region of the backing layer and not to an outer perimeter of the backing layer,;
- wherein the backing layer, the reinforcement layer, and the silicone adhesive layer are placed over the wound and the skin surrounding the wound as a composite structure;
- placing a vacuum port over the hole in the backing layer of the dressing;
- and
- applying negative pressure to the wound through the vacuum port.
A kit comprising:
- a composite dressing comprising a reinforced cover layer, the reinforced cover layer comprising:
- a backing layer configured to be positioned over a wound to define a vacuum reservoir over the wound, the backing layer comprising a peripheral region, a central region, and a hole positioned in the backing layer;
- and
- a silicone adhesive layer positioned beneath the backing layer and extending under the peripheral region of the backing layer and configured to provide a seal around the wound;
- and
- a vacuum port configured to be placed over the hole in the backing layer and configured to be sealed to an upper surface of the backing layer.
Dependencies are inferred from the claim text.