초록 ▼

A reduced pressure treatment system includes a reduced pressure source and a reduced pressure dressing. The dressing includes an interface layer adapted to be positioned at a tissue site and an absorbent layer in fluid communication with the interface layer to absorb liquid from at least one of the

A reduced pressure treatment system includes a reduced pressure source and a reduced pressure dressing. The dressing includes an interface layer adapted to be positioned at a tissue site and an absorbent layer in fluid communication with the interface layer to absorb liquid from at least one of the interface layer and the tissue site. A diverter layer is positioned adjacent the absorbent layer, and the diverter layer includes a plurality of apertures in fluid communication with the absorbent layer to distribute a reduced pressure to the absorbent layer. A cover is positioned over the diverter layer to maintain the reduced pressure at the tissue site.

대표청구항 ▼

1. A reduced pressure dressing adapted to distribute a reduced pressure to a tissue site, the dressing comprising: an interface layer adapted to be positioned at the tissue site;a first manifold layer positioned in fluid communication with the interface layer to distribute the reduced pressure to th

1. A reduced pressure dressing adapted to distribute a reduced pressure to a tissue site, the dressing comprising: an interface layer adapted to be positioned at the tissue site;a first manifold layer positioned in fluid communication with the interface layer to distribute the reduced pressure to the interface layer;an absorbent layer in fluid communication with the first manifold layer to absorb liquid from at least one of the first manifold layer, the interface layer, and the tissue site;a diverter layer positioned adjacent the absorbent layer, the diverter layer formed from a substantially gas-impermeable material, the diverter layer including a plurality of spaced apertures in fluid communication with the absorbent layer, wherein the diverter layer includes a plurality of ridges on a surface of the diverter layer to define a plurality of channels between the ridges;a second manifold layer in fluid communication with the diverter layer to distribute the reduced pressure to the diverter layer;a cover to maintain the reduced pressure at the tissue site, the cover having an aperture through which the reduced pressure is adapted to be delivered to the dressing; anda liquid-air separator positioned between the second manifold and the cover to inhibit liquid from exiting the dressing. 2. The reduced pressure dressing of claim 1, wherein the interface layer is hydrophobic. 3. The reduced pressure dressing of claim 1, wherein the absorbent layer includes a super absorbent fiber. 4. The reduced pressure dressing of claim 1 further comprising a seal layer positioned between a tissue surrounding the tissue site and at least one other layer to assist in maintaining reduced pressure in the dressing. 5. The reduced pressure dressing of claim 1, wherein a surface area of the diverter layer is greater than a surface area of the cover. 6. The reduced pressure dressing of claim 1, wherein: a surface area of the diverter layer is greater than a surface area of the cover; andat least a portion of the cover is adhesively coupled to the diverter layer and at least a portion of the diverter layer is adapted to be coupled to a tissue surrounding the tissue site. 7. The reduced pressure dressing of claim 6 further comprising a seal layer positioned between the diverter layer and the tissue surrounding the tissue site. 8. The reduced pressure dressing of claim 1, wherein the apertures of the diverter layer are positioned near at least one perimeter edge of the diverter layer. 9. The reduced pressure dressing of claim 1, wherein the apertures are holes. 10. The reduced pressure dressing of claim 1, wherein at least one of the apertures is larger than another of the apertures. 11. The reduced pressure dressing of claim 1, wherein at least one of the apertures is configured to become smaller on contact with moisture. 12. The reduced pressure dressing of claim 1, wherein the diverter layer allows the absorption capabilities of the absorbent layer to be more fully utilized. 13. The reduced pressure dressing of claim 1, wherein the diverter layer increases an amount of time over which the absorbent layer is capable of distributing reduced pressure. 14. A reduced pressure dressing adapted to distribute a reduced pressure to a tissue site, the dressing comprising: an interface layer adapted to be positioned at the tissue site;a first manifold layer positioned in fluid communication with the interface layer to distribute the reduced pressure to the interface layer;an absorbent layer in fluid communication with the first manifold layer to absorb liquid from at least one of the first manifold layer, the interface layer, and the tissue site;a diverter layer positioned adjacent the absorbent layer, the diverter layer formed from a substantially gas-impermeable material, the diverter layer including a plurality of spaced apertures in fluid communication with the absorbent layer, wherein at least one of the apertures is configured to become smaller on contact with moisture;a second manifold layer in fluid communication with the diverter layer to distribute the reduced pressure to the diverter layer; anda cover to maintain the reduced pressure at the tissue site, the cover having an aperture through which the reduced pressure is adapted to be delivered to the dressing. 15. A reduced pressure dressing adapted to distribute a reduced pressure to a tissue site, the dressing comprising: an interface layer adapted to be positioned at the tissue site;a first manifold layer positioned in fluid communication with the interface layer to distribute the reduced pressure to the interface layer;an absorbent layer in fluid communication with the first manifold layer to absorb liquid from at least one of the first manifold layer, the interface layer, and the tissue site;a diverter layer positioned adjacent the absorbent layer, the diverter layer formed from a substantially gas-impermeable material, the diverter layer including a plurality of spaced apertures in fluid communication with the absorbent layer, wherein the diverter layer includes a plurality of ridges on a surface of the diverter layer to define a plurality of channels between the ridges;a second manifold layer in fluid communication with the diverter layer to distribute the reduced pressure to the diverter layer; anda cover to maintain the reduced pressure at the tissue site, the cover having an aperture through which the reduced pressure is adapted to be delivered to the dressing. 16. A reduced pressure dressing adapted to distribute a reduced pressure to a tissue site, the dressing comprising: an interface layer adapted to be positioned at the tissue site;a first manifold layer positioned in fluid communication with the interface layer to distribute the reduced pressure to the interface layer;an absorbent layer in fluid communication with the first manifold layer to absorb liquid from at least one of the first manifold layer, the interface layer, and the tissue site;a diverter layer positioned adjacent the absorbent layer, the diverter layer formed from a substantially gas-impermeable material, the diverter layer including a plurality of spaced apertures in fluid communication with the absorbent layer;a second manifold layer in fluid communication with the diverter layer to distribute the reduced pressure to the diverter layer;a cover to maintain the reduced pressure at the tissue site, the cover having an aperture through which the reduced pressure is adapted to be delivered to the dressing, wherein a surface area of the diverter layer is greater than a surface area of the cover, wherein at least a portion of the cover is adhesively coupled to the diverter layer, and wherein at least a portion of the diverter layer is adapted to be coupled to a tissue surrounding the tissue site; anda seal layer positioned between the diverter layer and the tissue surrounding the tissue site.