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US 12,290,627 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 a sealing layer comprising at least one orifice, an absorbent layer over the sealing layer, absorbing wound exude and a liquid impermeable, gas permeable filter layer over the absorbent layer.
Claims9
An apparatus for the treatment of a wound by applying negative pressure to the wound, the apparatus comprising:
- a first porous layer for disposing on the wound, wherein the first porous layer comprises a first side and a second, patient-facing side;
- a sealing layer disposed over the first side of the porous layer to form a sealed space over the wound containing the first porous layer, wherein the sealing layer comprises a high-moisture vapor permeable material;
- a second porous layer having a first side and a second, patient-facing side;
- a cover layer disposed over the first side of the second porous layer forming an enclosure;
- at least one port formed on the cover layer;
- and
- a negative pressure source configured to be fluidly coupled to the sealed space and to the enclosure.
4 more elements
An apparatus for the treatment of a wound by applying negative pressure to the wound, the apparatus comprising:
- a housing comprising a sealing layer and a cover layer,
- a sealed space formed by the housing, wherein the sealed space comprises a first chamber and a second chamber;
- and
- a vacuum pump disposed within the sealed space, the vacuum pump comprises a reduced-pressure outlet fluidly coupled to the second chamber and an exhaust outlet fluidly coupled to the first chamber;
- wherein the cover layer comprises at least in part a filter layer, wherein the filter layer comprises a polymeric, porous, hydrophobic material for allowing the exhaust gas to exit the positive-pressure chamber through the filter layer.
2 more elements
Dependencies are inferred from the claim text.