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US 9,956,121 B2Granted
Wound dressing
AssigneeSmith & Nephew, Inc.
InventorEdward Yerbury Hartwell
Life of this patent
Estimating the term…
Abstract
A method and apparatus are disclosed for dressing a wound. The apparatus comprises an absorbent layer for absorbing wound exudate, a liquid impermeable, gas permeable filter layer over the absorbent layer, a cover layer comprising at least one orifice and a first liquid and gas permeable transmission layer underlying the absorbent layer. The transmission layer is in fluid communication with the filter layer.
Claims18
A system for applying negative pressure to a wound site, the system comprising:
- a wound dressing comprising:
- a perforated wound contact layer for contacting the wound site;
- a first transmission layer for distributing negative pressure overlying the wound contact layer;
- an absorbent layer for absorbing wound exudate via the wound contact layer and the first transmission layer, the absorbent layer overlying the first transmission layer;
- a second transmission layer overlying and in direct contact with the absorbent layer, the second transmission layer adapted to distribute negative pressure;
- a cover layer overlying the second transmission layer, the cover layer comprising at least one aperture and further comprising a border region and a central region, wherein the cover layer is directly secured to the wound contact layer in the border region;
- a filter provided over the second transmission layer and positioned at the at least one aperture in the cover layer, and;
- a negative pressure source configured to be in fluid communication with the at least one aperture in the cover layer via a conduit, the negative pressure source configured to generate negative pressure under the cover layer.
5 more elements
Dependencies are inferred from the claim text.