A support surface is configured to support a patient thereon and has a base portion that includes an air cushion layer. The support surface also has a layer of three dimensional engineered material above the base portion. The layer of three dimensional engineered material is configured to permit air
A support surface is configured to support a patient thereon and has a base portion that includes an air cushion layer. The support surface also has a layer of three dimensional engineered material above the base portion. The layer of three dimensional engineered material is configured to permit air passage therethrough. A cover is positioned between the layer of three dimensional engineered material and the patient to be supported. Air is forced through the layer of three dimensional engineered material.
대표청구항▼
What is claimed is: 1. An apparatus configured to support at least a portion of a body thereon, the apparatus comprising: a base portion including a plurality of zones, each zone having associated support characteristics, the base portion configured to provide a static support for the body, wherein
What is claimed is: 1. An apparatus configured to support at least a portion of a body thereon, the apparatus comprising: a base portion including a plurality of zones, each zone having associated support characteristics, the base portion configured to provide a static support for the body, wherein the base portion comprises at least one inflatable bladder with an interior devoid of foam; a pressure distribution layer supported by at least a first zone of the base portion, the pressure distribution layer including a spacing structure configured to provide air passage therethrough and to distribute pressure from the body over a greater area of the first zone; and a cover positioned between the pressure distribution layer and the portion of the body to be supported, the cover being coupled to a first source of air to provide air circulation through the pressure distribution layer. 2. The apparatus of claim 1, wherein the cover includes a first portion made from a moisture vapor permeable material, the first portion of the cover and the pressure distribution layer cooperating to provide cooling to the body. 3. The apparatus of claim 1, wherein the base portion includes a plurality of inflatable bladders, each of the plurality of zones including at least one of the plurality of bladders. 4. The apparatus of claim 3, further comprising a controller configured to control the pressure in each support zone of the plurality of support zones of the base portion, the controller configured to generally pressurize the first support zone at a first pressure and to generally pressurize a second support zone at a second pressure, the second pressure differing from the first pressure when the base portion is configured to provide a static support. 5. The apparatus of claim 4, wherein the controller controls the pressure of the plurality of bladders of at least the first support zone to provide alternating pressure therapy to the body. 6. The apparatus of claim 4, wherein the first support zone generally supports the chest region of the body and the controller controls the pressure of the plurality of bladders of at least the first support zone to provide percussion therapy to the chest region of the body. 7. The apparatus of claim 4, wherein the controller controls the pressure of the plurality of bladders of at least the first support zone to provide rotational therapy to the body. 8. The apparatus of claim 4, wherein the base portion is coupled to a second source of air, the amount of air received by the pressure distribution layer from the first source of air and the amount of air received by the base portion from the second source of air being controlled by the controller. 9. The apparatus of claim 4, further comprising a heating element to provide heat to at least a portion of the body supported thereon. 10. The apparatus of claim 9, wherein the heating element is controlled by the controller. 11. The apparatus of claim 4, wherein each support zone of the base portion includes a foam portion beneath the at least one inflatable bladder and outside the interior region. 12. The apparatus of claim 1, wherein the pressure distribution layer is supported by each zone of the base portion and is positioned in an interior region of the cover. 13. The apparatus of claim 12, wherein the base portion is positioned in the interior region of the cover. 14. The apparatus of claim 1, wherein the spacing structure includes a three dimensional engineered material having a plurality of resilient members. 15. The apparatus of claim 1, wherein the spacing structure includes indented fiber networks. 16. The apparatus of claim 1, wherein each support zone of the base portion includes a foam portion beneath the at least one inflatable bladder and outside the interior region. 17. A support surface configured to support a patient thereon, the support surface comprising: a base portion including an air cushion layer having at least one air cushion with an interior that is devoid of foam; a layer of three dimensional engineered material above the base portion, the layer of three dimensional engineered material being configured to permit air passage therethrough; a cover positioned between the layer of three dimensional engineered material and the patient to be supported; and means for forcing air through the layer of three dimensional engineered material. 18. The support surface of claim 17, wherein the base portion further comprises foam beneath the at least one air cushion and outside the interior region. 19. The support surface of claim 17, wherein the forcing means also forces air through at least a portion of the cover. 20. The support surface of claim 17, further comprising a fire sock, a least a portion of the fire sock being situated between at least a portion of the base portion and the cover. 21. The support surface of claim 17, wherein the air cushion layer comprises a plurality of air cushions. 22. The support surface of claim 17, wherein the layer of three dimensional engineered material comprises an indented fiber layer. 23. The support surface of claim 17, wherein the layer of three dimensional engineered material has projections and depressions. 24. The support surface of claim 23, wherein the projections and depressions are compressible and return to their original shape after being compressed. 25. The support surface of claim 17, wherein the layer of three dimensional engineered material comprises a synthetic thermoplastic fiber network. 26. The support surface of claim 17, wherein the layer of three dimensional engineered material comprises a molded thermoplastic spacer matrix. 27. The support surface of claim 17, wherein the layer of three dimensional engineered material comprises a plurality of indented fiber layers. 28. The support surface of claim 17, wherein the cover includes an air permeable top surface, the three dimensional engineered material being located adjacent the top surface. 29. The support surface of claim 17, wherein the layer of three dimensional engineered material and the forcing means cooperate to provide cooling for the patient. 30. The support surface of claim 17, wherein the forcing means comprises a fan. 31. The support surface of claim 30, wherein the forcing means comprises a tube coupled to the fan. 32. The support surface of claim 17, wherein the forcing means is packaged to sit on a floor. 33. The support surface of claim 17, wherein the forcing means includes a bracket for coupling to a bed.
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