Wound dressing
First Claim
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1. 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.
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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.
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Citations
18 Claims
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1. A system for applying negative pressure to a wound site, the system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification