Negative pressure wound therapy dressing
First Claim
1. A wound treatment apparatus, comprising:
- a cover layer adapted to establish a reservoir over a wound in which a negative pressure may be maintained, the cover layer including an opening therein through which atmospheric gasses and wound exudates may pass through the cover layer;
a vacuum port affixed to the cover layer to establish a substantially fluid tight seal about the opening in the cover layer, the vacuum port including a hollow interior in fluid communication with the opening in the cover layer, and a connector to facilitate connection to a vacuum source; and
a packing member adapted to fill the wound and to support the cover layer when a negative pressure is applied to the reservoir, the packing member comprising a plurality of rows of parallel discrete elongated fingers, the discrete elongated fingers extending distally from a distal side of the cover layer, wherein each elongated finger comprises a continuous strip of open-celled foam with no inner conduit, and wherein the plurality of discrete elongated fingers are separated from one another by a plurality of gaps.
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Accused Products
Abstract
A wound dressing suitable for use in negative pressure wound therapy system includes a cover layer adapted to establish a reservoir over a wound in which a negative pressure may be maintained. The cover layer includes an opening therein through which atmospheric gasses and wound exudates may pass through the cover layer. A vacuum port is affixed to the cover layer, and establishes a substantially fluid tight seal about the opening in the cover layer. The vacuum port includes a hollow interior in fluid communication with the opening in the cover layer and a connector to facilitate connection to a vacuum source. A packing member is affixed to the cover layer, to provide a wound dressing that may be applied in a single step process. The packing member is adapted to fill the wound and support the cover layer when a negative pressure is applied to the reservoir.
278 Citations
18 Claims
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1. A wound treatment apparatus, comprising:
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a cover layer adapted to establish a reservoir over a wound in which a negative pressure may be maintained, the cover layer including an opening therein through which atmospheric gasses and wound exudates may pass through the cover layer; a vacuum port affixed to the cover layer to establish a substantially fluid tight seal about the opening in the cover layer, the vacuum port including a hollow interior in fluid communication with the opening in the cover layer, and a connector to facilitate connection to a vacuum source; and a packing member adapted to fill the wound and to support the cover layer when a negative pressure is applied to the reservoir, the packing member comprising a plurality of rows of parallel discrete elongated fingers, the discrete elongated fingers extending distally from a distal side of the cover layer, wherein each elongated finger comprises a continuous strip of open-celled foam with no inner conduit, and wherein the plurality of discrete elongated fingers are separated from one another by a plurality of gaps. - View Dependent Claims (2, 3, 4, 5, 6, 16)
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7. A wound treatment apparatus, comprising:
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a cover layer adapted to establish a reservoir over a wound in which a negative pressure may be maintained, the cover layer including an opening therein through which atmospheric gasses and wound exudates may pass through the cover layer; a vacuum port affixed to the cover layer to establish a substantially fluid tight seal about the opening in the cover layer, the vacuum port including a hollow interior in fluid communication with the opening in the cover layer and a connector to facilitate connection to a vacuum source; and a packing member, the packing member including a plurality of rows of parallel discrete elongated fingers comprising an open-celled foam, the discrete elongated fingers configured to extend distally from the distal side of the cover layer and a plurality of rows of parallel discrete shells comprising a polymeric material, wherein the plurality of discrete elongated fingers are configured to be inserted within the plurality of discrete shells, and wherein the plurality of discrete shells are more rigid than the plurality of discrete elongated fingers. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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17. A wound treatment apparatus, comprising:
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a cover layer adapted to establish a reservoir over a wound in which a negative pressure may be maintained, the cover layer including an opening therein through which atmospheric gasses and wound exudates may pass through the cover layer; an apertured member comprising apertures that extend from a top to a bottom of the apertured member; a packing member adapted to fill the wound and to support the cover layer, the packing member comprising a plurality of parallel discrete elongated fingers, the discrete elongated fingers extending distally toward the wound, wherein the elongated fingers comprise an open-celled foam, and wherein the plurality of discrete elongated fingers are separated from one another by a plurality of gaps; and wherein the discrete elongated fingers extend into the apertures. - View Dependent Claims (18)
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Specification