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US 12,491,121 B2Granted
Wound dressing
AssigneeSmith & Nephew, Inc.
InventorEdward Yerbury Hartwell
Life of this patent
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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.
Claims9
A method of managing fluid removed from a wound by negative pressure, the method comprising:
- applying negative pressure from a source of negative pressure to a wound dressing positioned over the wound, the wound dressing comprising an absorbent layer and a cover layer over the absorbent layer, wherein the application of negative pressure to the wound dressing draws fluid from the wound into the absorbent layer;
- collecting and storing fluid from the wound within the absorbent layer simultaneously with the application of negative pressure;
- and
- transpiring moisture from the fluid drawn into the absorbent layer through the cover layer and dispersing the moisture into the atmosphere simultaneous with the application of negative pressure, wherein the cover layer transpires moisture at a rate on the order of 3000 grams/meter square/24 hours.
1 more element
Dependencies are inferred from the claim text.