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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | UP-0657887 (2007-01-25) |
등록번호 | US-7700819 (2010-05-20) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 97 인용 특허 : 182 |
A multi-layer reduced pressure delivery apparatus is provided for applying reduced pressure tissue treatment to a tissue site. The multi-layer apparatus includes a tissue contact layer, a release layer, and a manifold layer. The tissue contact layer includes a scaffold adapted to contact the tissue
A multi-layer reduced pressure delivery apparatus is provided for applying reduced pressure tissue treatment to a tissue site. The multi-layer apparatus includes a tissue contact layer, a release layer, and a manifold layer. The tissue contact layer includes a scaffold adapted to contact the tissue site, the release layer includes a hydrogel-forming material and a plurality of flow channels, and the manifold layer includes a distribution manifold. The release layer is positioned between the tissue contact layer and the manifold layer to allow easy release of the manifold layer from the tissue contact layer following the administration of reduced pressure tissue treatment.
We claim: 1. A reduced pressure delivery system for applying reduced pressure tissue treatment to a tissue site comprising: a multi-layer reduced pressure delivery apparatus having a tissue contact layer, a release layer, and a manifold layer, the tissue contact layer including a scaffold adapted t
We claim: 1. A reduced pressure delivery system for applying reduced pressure tissue treatment to a tissue site comprising: a multi-layer reduced pressure delivery apparatus having a tissue contact layer, a release layer, and a manifold layer, the tissue contact layer including a scaffold adapted to contact the tissue site, the release layer including a hydrogel-forming material and a plurality of flow channels, the manifold layer including a distribution manifold, the release layer being positioned between the tissue contact layer and the manifold layer, the hydrogel-forming material of the release layer binding to at least one of the tissue contact layer and the manifold layer; and a reduced-pressure delivery tube fluidly connected to the manifold layer to deliver a reduced pressure to the tissue site. 2. The reduced pressure delivery system according to claim 1, wherein the hydrogel-forming material is positioned between the scaffold and the distribution manifold to substantially prevent contact between the scaffold and the distribution manifold in areas where the hydrogel-forming material is disposed. 3. The reduced pressure delivery system according to claim 2, wherein the distribution manifold contacts the scaffold in areas in which the hydrogel-forming material is not disposed during application of the reduced pressure. 4. The reduced pressure delivery system according to claim 1, wherein the tissue contact layer is from about 1 mm to about 4 mm in thickness. 5. The reduced pressure delivery system according to claim 1, wherein the thickness of the release layer is less than the thickness of the tissue contact layer. 6. The reduced pressure delivery system according to claim 1, wherein the plurality of flow channels of the release layer are provided by pores disposed in a sheet of the hydrogel-forming material. 7. The reduced pressure delivery system according to claim 6, wherein the pore sizes of the pores in the release layer are less than the pore sizes of the pores in the scaffold. 8. The reduced pressure delivery system according to claim 1, wherein: the hydrogel-forming material is arranged in a grid pattern such that strands of the hydrogel-forming material are aligned in rows and columns; and the plurality of flow channels are formed by voids disposed between the rows and columns of the hydrogel-forming material. 9. The reduced pressure delivery system according to claim 1, wherein: the hydrogel-forming material is provided as a plurality of individual beads, each bead being spaced apart from adjacent beads by a void; and the plurality of flow channels are formed by the voids disposed between the beads of the hydrogel-forming material. 10. The reduced pressure delivery system according to claim 9, wherein the porosity provided by the voids is less than the porosity provided by the scaffold. 11. The reduced pressure delivery system according to claim 1, wherein the distribution manifold is an open-cell, reticulated polyetherurethane foam. 12. The reduced pressure delivery system according to claim 1, wherein the hydrogel-forming material is a barrier to tissue penetration. 13. The reduced pressure delivery system according to claim 1, wherein the scaffold is comprised of at least one material selected from the group of polylactic acid polyglycolic acid, polycaprolactone, polyhydroxybutyrate, polyhydroxyvalerate, polydioxanone, polyorthoesthers, polyphosphazenes, polyurethanes, collagen, hyaluronic acid, chitosan, hydroxyapatite, coralline apatite, calcium phosphate, calcium sulfate, calcium carbonate, bioglass, allografts, and autografts. 14. The reduced pressure delivery system according to claim 1, wherein the hydrogel-forming material is comprised of at least one material selected from the group of polyethylene glycol, hydrophilic polyethers, polyvinyl alcohol, polyvinyl acetate, polyacrylates, polysulfonates, polyphosphazene hydrogels, collagen, gelatin, hyaluronic acid, glucosaminoglycan, chitosan, alginate, and uncrosslinked copolymers of ethylene glycol and lactic acid. 15. The reduced pressure delivery system according to claim 1, wherein the distribution manifold is comprised of at least one material selected from the group of polyurethane foam, polyvinyl alcohol foam, polyethylene foam, expanded polytetrafluoroethylene, silicone foam, loofa sponge, sea sponge, gauze, and felted mats. 16. The reduced pressure delivery system according to claim 1 further comprising: a reduced pressure source fluidly connected to a proximal end of the reduced-pressure delivery tube. 17. A multi-layer reduced pressure delivery apparatus for applying reduced pressure tissue treatment to a tissue site comprising: a first layer having a scaffold adapted to contact a tissue site; a second layer having a hydrogel-forming material and a plurality of flow channels, the hydrogel-forming material contacting the scaffold; and a third layer having a distribution manifold contacting the hydrogel-forming material. 18. The reduced pressure delivery apparatus according to claim 17, wherein the hydrogel-forming material is positioned between the first layer and the third layer and is connected to at least one of the scaffold and the distribution manifold. 19. The reduced pressure delivery apparatus according to claim 17 further comprising: a reduced-pressure delivery tube fluidly connected to the third layer to deliver a reduced pressure to the tissue site. 20. The reduced pressure delivery apparatus according to claim 17, wherein the hydrogel-forming material is positioned between the scaffold and the distribution manifold to substantially prevent contact between the scaffold and the distribution manifold in areas where the hydrogel-forming material is disposed. 21. The reduced pressure delivery apparatus according to claim 17, wherein the distribution manifold contacts the scaffold in areas in which the hydrogel-forming material is not disposed during application of a reduced pressure. 22. The reduced pressure delivery apparatus according to claim 17, wherein a reduced pressure is delivered to the tissue site through the distribution manifold, the plurality of flow channels, and the scaffold. 23. The reduced pressure delivery apparatus according to claim 17, wherein the flow channels are capable of transmitting a fluid from the scaffold to the distribution manifold during the application of a reduced pressure. 24. The reduced pressure delivery apparatus according to claim 23, wherein the fluid is a wound exudate from the tissue site. 25. The reduced pressure delivery apparatus according to claim 17, wherein the first layer is from about 1 mm to about 4 mm in thickness. 26. The reduced pressure delivery apparatus according to claim 17, wherein the thickness of the second layer in a dehydrated state is less than the thickness of the first layer. 27. The reduced pressure delivery apparatus according to claim 17, wherein the scaffold includes pores having pore sizes ranging from about 50 microns to about 500 microns in diameter. 28. The reduced pressure delivery apparatus according to claim 17, wherein the scaffold includes pores having pore sizes ranging from about 100 microns to about 400 microns in diameter. 29. The reduced pressure delivery apparatus according to claim 17, wherein the plurality of flow channels of the second layer are provided by pores disposed in a sheet of the hydrogel-forming material. 30. The reduced pressure delivery apparatus according to claim 29, wherein the pore sizes of the pores in the second layer are less than the pore sizes of the pores in the scaffold. 31. The reduced pressure delivery apparatus according to claim 17, wherein: the hydrogel-forming material is arranged in a grid pattern such that strands of the hydrogel-forming material are aligned in rows and columns; and the plurality of flow channels are formed by voids disposed between the rows and columns of the hydrogel-forming material. 32. The reduced pressure delivery apparatus according to claim 17, wherein: the hydrogel-forming material is provided as a plurality of individual beads, each bead being spaced apart from adjacent beads by a void; and the plurality of flow channels are formed by the voids disposed between the beads of the hydrogel-forming material. 33. The reduced pressure delivery apparatus according to claim 32, wherein the porosity provided by the voids is less than the porosity provided by the scaffold. 34. The reduced pressure delivery apparatus according to claim 17, wherein the distribution manifold is a cellular foam. 35. The reduced pressure delivery apparatus according to claim 17, wherein the distribution manifold is an open-cell, reticulated polyetherurethane foam. 36. The reduced pressure delivery apparatus according to claim 17, wherein the distribution manifold includes pore sizes ranging from about 400 to about 600 microns in diameter. 37. The reduced pressure delivery apparatus according to claim 17, wherein the third layer includes an antimicrobial agent. 38. The reduced pressure delivery apparatus according to claim 17, wherein the hydrogel-forming material is bioabsorbable. 39. The reduced pressure delivery apparatus according to claim 17, wherein the hydrogel-forming material is a barrier to tissue penetration. 40. The reduced pressure delivery apparatus according to claim 17, wherein the tissue site is comprised of tissue selected from the group of adipose tissue, bone tissue, cartilage, connective tissue, dermal tissue, ligaments, muscle tissue, tendons, and vascular tissue. 41. The reduced pressure delivery apparatus according to claim 17, wherein the scaffold is comprised of at least one material selected from the group of polylactic acid, polyglycolic acid, polycaprolactone, polyhydroxybutyrate, polyhydroxyvalerate, polydioxanone, polyorthoesthers, polyphosphazenes, polyurethanes, collagen, hyaluronic acid, chitosan, hydroxyapatite, coralline apatite, calcium phosphate, calcium sulfate, calcium carbonate, bioglass, allografts, and autografts. 42. The reduced pressure delivery apparatus according to claim 17, wherein the hydrogel-forming material is comprised of at least one material selected from the group of polyethylene glycol, hydrophilic polyethers, polyvinyl alcohol, polyvinyl acetate, polyacrylates, polysulfonates, polyphosphazene hydrogels, collagen, gelatin, hyaluronic acid, glucosaminoglycan, chitosan, alginate, and uncrosslinked copolymers of ethylene glycol and lactic acid. 43. The reduced pressure delivery apparatus according to claim 17, wherein the distribution manifold is comprised of at least one material selected from the group of polyurethane foam, polyvinyl alcohol foam, polyethylene foam, expanded polytetrafluoroethylene, silicone foam, loofa sponge, sea sponge, gauze, and felted mats. 44. The reduced pressure delivery apparatus according to claim 17, wherein the distribution manifold is chosen from the group of a woven porous pad, a non-woven porous pad, a loofa sponge, and a sea sponge. 45. A multi-layer reduced pressure delivery apparatus for applying reduced pressure tissue treatment to a tissue site comprising: a tissue contact layer having a scaffold adapted to contact the tissue site to receive in-growth of new tissue from the tissue site, the tissue contact layer further having a first plurality of flow channels; a manifold layer having a cellular material to distribute a reduced pressure to the tissue site, the manifold layer further having a third plurality of flow channels; and a release layer positioned between the tissue contact layer and the manifold layer, the release layer including a hydrogel-forming material connected to at least one of the tissue contact layer and the manifold layer, the hydrogel-forming material adapted to form a hydrogel upon the absorption of a fluid to release the at least one of the tissue contact layer and the manifold layer, the release layer further having a second plurality of flow channels in fluid communication with the first and third plurality of flow channels. 46. The reduced pressure delivery apparatus according to claim 45 further comprising a reduced-pressure delivery tube fluidly connected to the manifold layer to deliver the reduced pressure to the tissue site through the third plurality of flow channels, the second plurality of flow channels, and the first plurality of flow channels. 47. The reduced pressure delivery apparatus according to claim 45, wherein: the hydrogel-forming substantially prevents contact between the scaffold and the cellular material in areas where the hydrogel-forming material is disposed; and the cellular material contacts the scaffold in areas in which the hydrogel-forming material is not disposed during application of the reduced pressure. 48. The reduced pressure delivery apparatus according to claim 45, wherein the tissue contact layer is from about 1 mm to about 4 mm in thickness. 49. The reduced pressure delivery apparatus according to claim 45, wherein the thickness of the release layer is less than the thickness of the tissue contact layer. 50. The reduced pressure delivery apparatus according to claim 45, wherein the scaffold includes pores having pore sizes ranging from about 50 microns to about 500 microns in diameter. 51. The reduced pressure delivery apparatus according to claim 45, wherein the second plurality of flow channels of the release layer are provided by pores disposed in a sheet of the hydrogel-forming material. 52. The reduced pressure delivery apparatus according to claim 51, wherein the pore sizes of the pores in the release layer are less than the pore sizes of the pores in the scaffold. 53. The reduced pressure delivery apparatus according to claim 45, wherein: the hydrogel-forming material is arranged in a grid pattern such that strands of the hydrogel-forming material are aligned in rows and columns; and the second plurality of flow channels are formed by voids disposed between the rows and columns of the hydrogel-forming material. 54. The reduced pressure delivery apparatus according to claim 45, wherein: the hydrogel-forming material is provided as a plurality of individual beads, each bead being spaced apart from adjacent beads by a void; and the second plurality of flow channels are formed by the voids disposed between the beads of the hydrogel-forming material. 55. The reduced pressure delivery apparatus according to claim 54, wherein the porosity provided by the voids is less than the porosity provided by the scaffold. 56. The reduced pressure delivery apparatus according to claim 45, wherein the cellular material is an open-cell, reticulated polyetherurethane foam. 57. The reduced pressure delivery apparatus according to claim 45, wherein the hydrogel-forming material is a barrier to tissue penetration. 58. The reduced pressure delivery apparatus according to claim 45, wherein the scaffold is comprised of at least one material selected from the group of polylactic acid, polyglycolic acid, polycaprolactone, polyhydroxybutyrate, polyhydroxyvalerate, polydioxanone, polyorthoesthers, polyphosphazenes, polyurethanes, collagen, hyaluronic acid, chitosan, hydroxyapatite, coralline apatite, calcium phosphate, calcium sulfate, calcium carbonate, bioglass, allografts, and autografts. 59. The reduced pressure delivery apparatus according to claim 45, wherein the hydrogel-forming material is comprised of at least one material selected from the group of polyethylene glycol, hydrophilic polyethers, polyvinyl alcohol, polyvinyl acetate, polyacrylates, polysulfonates, polyphosphazene hydrogels, collagen, gelatin, hyaluronic acid, glucosaminoglycan, chitosan, alginate, and uncrosslinked copolymers of ethylene glycol and lactic acid. 60. The reduced pressure delivery apparatus according to claim 45, wherein the cellular material is comprised of at least one material selected from the group of polyurethane foam, polyvinyl alcohol foam, polyethylene foam, expanded polytetrafluoroethylene, silicone foam, loofa sponge, sea sponge, gauze, and felted mats. 61. A reduced pressure delivery apparatus for applying reduced pressure tissue treatment to a tissue site comprising: a scaffold adapted to contact a tissue site to receive in-growth of new tissue from the tissue site; a distribution manifold adapted to distribute a reduced pressure to the tissue site through the scaffold; and a release material positioned between and in contact with the scaffold and the distribution manifold to substantially prevent contact between the scaffold and the distribution manifold in areas where the release material is disposed. 62. The reduced pressure delivery apparatus according to claim 61, wherein the release material is connected to at least one of the scaffold and the distribution manifold. 63. The reduced pressure delivery apparatus according to claim 61 further comprising: a reduced-pressure delivery tube having a distal end fluidly connected to the distribution manifold to deliver the reduced pressure to the distribution manifold. 64. The reduced pressure delivery apparatus according to claim 61, wherein the distribution manifold contacts the scaffold in areas in which the release material is not disposed during application of the reduced pressure. 65. The reduced pressure delivery apparatus according to claim 61 further comprising: a plurality of flow channels disposed between the scaffold and distribution manifold to allow fluid communication between the scaffold and distribution manifold. 66. The reduced pressure delivery apparatus according to claim 61, wherein the scaffold is from about 1 mm to about 4 mm in thickness. 67. The reduced pressure delivery apparatus according to claim 61, wherein the thickness of the release material is less than the thickness of the scaffold. 68. The reduced pressure delivery apparatus according to claim 61, wherein the scaffold includes pores having pore sizes ranging from about 50 microns to about 500 microns in diameter. 69. The reduced pressure delivery apparatus according to claim 61, wherein the scaffold includes pores having pore sizes ranging from about 100 microns to about 400 microns in diameter. 70. The reduced pressure delivery apparatus according to claim 61 further comprising: a plurality of flow channels disposed between the scaffold and distribution manifold to allow fluid communication between the scaffold and distribution manifold; and wherein the plurality of flow channels are provided by pores disposed in a sheet of the release material. 71. The reduced pressure delivery apparatus according to claim 70, wherein the pore sizes of the pores in the sheet of the release material are less than the pore sizes of pores in the scaffold. 72. The reduced pressure delivery apparatus according to claim 61 further comprising: a plurality of flow channels disposed between the scaffold and distribution manifold to allow fluid communication between the scaffold and distribution manifold; wherein the release material is arranged in a grid pattern such that strands of the release material are aligned in rows and columns; and wherein the plurality of flow channels are formed by voids disposed between the rows and columns of the release material. 73. The reduced pressure delivery apparatus according to claim 61 further comprising: a plurality of flow channels disposed between the scaffold and distribution manifold to allow fluid communication between the scaffold and distribution manifold; the release material is provided as a plurality of individual beads, each bead being spaced apart from adjacent beads by a void; and the plurality of flow channels are formed by the voids disposed between the beads of the release material. 74. The reduced pressure delivery apparatus according to claim 73, wherein the porosity provided by the voids is less than the porosity provided by the scaffold. 75. The reduced pressure delivery apparatus according to claim 61, wherein the distribution manifold is a cellular foam. 76. The reduced pressure delivery apparatus according to claim 61, wherein the distribution manifold is an open-cell, reticulated polyetherurethane foam. 77. The reduced pressure delivery apparatus according to claim 61, wherein the distribution manifold includes pore sizes ranging from about 400 to about 600 microns in diameter. 78. The reduced pressure delivery apparatus according to claim 61, wherein the distribution manifold is infused with an antimicrobial agent. 79. The reduced pressure delivery apparatus according to claim 61, wherein the release material is bioabsorbable. 80. The reduced pressure delivery apparatus according to claim 61, wherein the release material is a barrier to tissue penetration. 81. The reduced pressure delivery apparatus according to claim 61, wherein the tissue site is comprised of tissue selected from the group of adipose tissue, bone tissue, cartilage, connective tissue, dermal tissue, ligaments, muscle tissue, tendons, and vascular tissue. 82. The reduced pressure delivery apparatus according to claim 61, wherein the scaffold is comprised of at least one material selected from the group of polylactic acid, polyglycolic acid, polycaprolactone, polyhydroxybutyrate, polyhydroxyvalerate, polydioxanone, polyorthoesthers, polyphosphazenes, polyurethanes, collagen, hyaluronic acid, chitosan, hydroxyapatite, coralline apatite, calcium phosphate, calcium sulfate, calcium carbonate, bioglass, allografts, and autografts. 83. The reduced pressure delivery apparatus according to claim 61, wherein the release material is comprised of at least one material selected from the group of polyethylene glycol, hydrophilic polyethers, polyvinyl alcohol, polyvinyl acetate, polyacrylates, polysulfonates, polyphosphazene hydrogels, collagen, gelatin, hyaluronic acid, glucosaminoglycan, chitosan, alginate, deoxyribonucleic acid, and uncrosslinked copolymers of ethylene glycol and lactic acid. 84. The reduced pressure delivery apparatus according to claim 61, wherein the distribution manifold is comprised of at least one material selected from the group of polyurethane foam, polyvinyl alcohol foam, polyethylene foam, expanded polytetrafluoroethylene, silicone foam, loofa sponge, sea sponge, gauze, and felted mats. 85. The reduced pressure delivery apparatus according to claim 61, wherein the distribution manifold is chosen from the group of a woven porous pad, a non-woven porous pad, a loofa sponge, and a sea sponge. 86. A reduced pressure delivery system for applying reduced pressure tissue treatment to a tissue site comprising: a reduced pressure delivery apparatus having a distribution manifold to distribute a reduced pressure and a scaffold to encourage in-growth of new tissue from the tissue site, the distribution manifold and scaffold being bound together by a hydrogel-forming material positioned between the distribution manifold and the scaffold; and a reduced-pressure delivery tube having a distal end fluidly connected to the distribution manifold to deliver the reduced pressure through the distribution manifold and scaffold to the tissue site. 87. The reduced pressure delivery system according to claim 86, wherein the hydrogel-forming material substantially prevents contact between the scaffold and the distribution manifold in areas where the hydrogel-forming material is disposed. 88. The reduced pressure delivery system according to claim 86, wherein the distribution manifold contacts the scaffold in areas in which the hydrogel-forming material is not disposed during application of the reduced pressure. 89. The reduced pressure delivery system according to claim 86 further comprising: a plurality of flow channels disposed between the scaffold and distribution manifold to allow fluid communication between the scaffold and distribution manifold. 90. The reduced pressure delivery system according to claim 86, wherein the scaffold is from about 1 mm to about 4 mm in thickness. 91. The reduced pressure delivery system according to claim 86, wherein the thickness of the hydrogel-forming material is less than the thickness of the scaffold. 92. The reduced pressure delivery system according to claim 86 further comprising: a plurality of flow channels disposed between the scaffold and distribution manifold to allow fluid communication between the scaffold and distribution manifold; and wherein the plurality of flow channels are provided by pores disposed in a sheet of the hydrogel-forming material. 93. The reduced pressure delivery system according to claim 92, wherein the pore sizes of the pores in the sheet of the hydrogel-forming material are less than the pore sizes of pores in the scaffold. 94. The reduced pressure delivery system according to claim 86 further comprising: a plurality of flow channels disposed between the scaffold and distribution manifold to allow fluid communication between the scaffold and distribution manifold; wherein the hydrogel-forming material is arranged in a grid pattern such that strands of the hydrogel-forming material are aligned in rows and columns; and wherein the plurality of flow channels are formed by voids disposed between the rows and columns of the hydrogel-forming material. 95. The reduced pressure delivery system according to claim 86 further comprising: a plurality of flow channels disposed between the scaffold and distribution manifold to allow fluid communication between the scaffold and distribution manifold; the hydrogel-forming material is provided as a plurality of individual beads, each bead being spaced apart from adjacent beads by a void; and the plurality of flow channels are formed by the voids disposed between the beads of the hydrogel-forming material. 96. The reduced pressure delivery system according to claim 95, wherein the porosity provided by the voids is less than the porosity provided by the scaffold. 97. The reduced pressure delivery system according to claim 86, wherein the distribution manifold is an open-cell, reticulated polyetherurethane foam. 98. The reduced pressure delivery system according to claim 86, wherein the hydrogel-forming material is a barrier to tissue penetration. 99. The reduced pressure delivery system according to claim 86, wherein the scaffold is comprised of at least one material selected from the group of polylactic acid, polyglycolic acid, polycaprolactone, polyhydroxybutyrate, polyhydroxyvalerate, polydioxanone, polyorthoesthers, polyphosphazenes, polyurethanes, collagen, hyaluronic acid, chitosan, hydroxyapatite, coralline apatite, calcium phosphate, calcium sulfate, calcium carbonate, bioglass, allografts, and autografts. 100. The reduced pressure delivery system according to claim 86, wherein the hydrogel-forming material is comprised of at least one material selected from the group of polyethylene glycol, hydrophilic polyethers, polyvinyl alcohol, polyvinyl acetate, polyacrylates, polysulfonates, polyphosphazene hydrogels, collagen, gelatin, hyaluronic acid, glucosaminoglycan, chitosan, alginate, and uncrosslinked copolymers of ethylene glycol and lactic acid. 101. The reduced pressure delivery system according to claim 86, wherein the distribution manifold is comprised of at least one material selected from the group of polyurethane foam, polyvinyl alcohol foam, polyethylene foam, expanded polytetrafluoroethylene, silicone foam, loofa sponge, sea sponge, gauze, and felted mats. 102. The reduced pressure delivery system according to claim 86 further comprising: a reduced pressure source fluidly connected to a proximal end of the reduced-pressure delivery tube. 103. A method for promoting new tissue growth at a tissue site comprising: positioning a scaffold in contact with the tissue site; positioning a hydrogel-forming material in contact with the scaffold; positioning a manifold in contact with the hydrogel-forming material; and applying a reduced pressure to the tissue site through the manifold and scaffold. 104. The method according to claim 103, further comprising: withdrawing exudate through the scaffold and manifold. 105. The method according to claim 103, further comprising: ceasing the application of reduced pressure to the manifold; allowing the hydrogel-forming material to hydrate into a gel form; and removing the manifold from the hydrogel-forming material. 106. The method according to claim 105 further comprising removing the hydrogel-forming material from the scaffold. 107. The method according to claim 105, wherein the step of allowing the hydrogel-forming material to hydrate further comprises: delivering a fluid to the hydrogel-forming material through the manifold. 108. The method according to claim 105 further comprising: following removal of the manifold, positioning a second scaffold in contact with the first scaffold; positioning a second hydrogel-forming material in contact with the second scaffold; positioning a second manifold in contact with the second hydrogel-forming material; and applying reduced pressure to the second manifold. 109. The method according to claim 103, wherein the tissue site is comprised of tissue selected from the group of adipose tissue, bone tissue, muscle tissue, dermal tissue, vascular tissue, connective tissue, cartilage, tendons, and ligaments. 110. A method for promoting new tissue growth at a tissue site comprising: positioning a multi-layer reduced pressure delivery apparatus in contact with the tissue site, the multi-layer reduced pressure delivery apparatus including: a tissue contact layer having a scaffold adapted to contact the tissue site; a manifold layer having a distribution manifold; and a release layer having a hydrogel-forming material and a plurality of flow channels, the release layer being positioned between the tissue contact layer and the manifold layer, the hydrogel-forming material of the release layer binding to at least one of the tissue contact layer and the manifold layer; orienting the multi-layered reduced pressure delivery apparatus such that the tissue contact layer contacts the tissue site; and applying a reduced pressure to the tissue site through the distribution manifold, the flow channels, and the scaffold. 111. The method according to claim 110, further comprising: withdrawing exudate through the scaffold, the flow channels, and the distribution manifold. 112. The method according to claim 110, further comprising: ceasing the application of reduced pressure; allowing the hydrogel-forming material to hydrate into a gel form; and removing the distribution manifold from the hydrogel-forming material. 113. The method according to claim 112 further comprising: following removal of the distribution manifold, positioning a second multi-layer reduced pressure delivery apparatus in contact with the first scaffold; and applying reduced pressure to the second multi-layer reduced pressure delivery apparatus. 114. A method for promoting new tissue growth at a tissue site comprising: positioning a multi-layer reduced pressure delivery apparatus in contact with the tissue site, the multi-layer reduced pressure delivery apparatus including: a first layer having a scaffold adapted to contact the tissue site; a second layer having a hydrogel-forming material and a plurality of flow channels, the hydrogel-forming material contacting the scaffold; and a third layer having a distribution manifold contacting the hydrogel-forming material; orienting the multi-layered reduced pressure delivery apparatus such that the tissue contact layer contacts the tissue site; and applying a reduced pressure to the tissue site through the distribution manifold, the flow channels, and the scaffold. 115. A method for promoting new tissue growth at a tissue site comprising: positioning a scaffold in contact with the tissue site, a hydrogel-forming material in contact with the scaffold, and a distribution manifold in contact with the hydrogel-forming material; and stimulating new tissue growth at the tissue site by applying a reduced pressure to the tissue site through the distribution manifold and the scaffold.
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