IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0043315
(2011-03-08)
|
등록번호 |
US-8721606
(2014-05-13)
|
발명자
/ 주소 |
- Simmons, Tyler
- Sammons, Alexander G.
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
87 |
초록
▼
Dressings, systems, and methods are disclosed for treating tissue with reduced pressure. A dressing for distributing reduced pressure to a tissue site includes a plurality of liquid-impermeable layers that are stacked and a plurality of spacers disposed at least partially between adjacent liquid-imp
Dressings, systems, and methods are disclosed for treating tissue with reduced pressure. A dressing for distributing reduced pressure to a tissue site includes a plurality of liquid-impermeable layers that are stacked and a plurality of spacers disposed at least partially between adjacent liquid-impermeable layers. The plurality of liquid-impermeable layers are fenestrated at least in part. The plurality of spacers and plurality of liquid-impermeable layers form a plurality of flow paths for allowing fluid flow under reduced pressure. Adjacent layers of the plurality of liquid-impermeable layers are stacked without foam between at least a majority of coextensive surfaces. Other dressings, systems, and methods are disclosed.
대표청구항
▼
1. A dressing for distributing reduced pressure to a tissue site, the dressing comprising: at least two liquid-impermeable layers forming opposing sides of the dressing, each liquid-impermeable layer positioned in a stacked relationship adjacent at least one other liquid-impermeable layer, and each
1. A dressing for distributing reduced pressure to a tissue site, the dressing comprising: at least two liquid-impermeable layers forming opposing sides of the dressing, each liquid-impermeable layer positioned in a stacked relationship adjacent at least one other liquid-impermeable layer, and each liquid-impermeable layer having a plurality of contact sites each proximate a contact site of an adjacent liquid-impermeable layer and a surface area between the contact sites coextensive with the surface area of the adjacent liquid-impermeable layer, wherein fenestrations are formed in the surface area of each liquid-impermeable layer;a plurality of spacers, each spacer at least partially formed at a contact site between the adjacent liquid-impermeable layers to provide displacement between the surface areas of the adjacent liquid-impermeable layers, wherein the plurality of spacers include a plurality of bonds forming a spaced pattern, each individual bond having an aspect ratio greater than three, a circular shape and coupling at least two of the adjacent liquid-impermeable layers at the contact site; anda plurality of flow paths formed by the plurality of spacers, the flow paths extending from a first side of the dressing formed by a first layer through the fenestrations to a second side of the dressing formed by a second layer of the adjacent liquid-impermeable layers for allowing fluid flow under reduced pressure through the adjacent liquid-impermeable layers to the tissue site. 2. The dressing of claim 1, wherein the plurality of spacers comprises an enlarged portion of at least one of the plurality of liquid-impermeable layers. 3. The dressing of claim 1, wherein the plurality of spacers comprises a plurality of folds formed in at least one of the plurality of liquid-impermeable layers. 4. The dressing of claim 1, wherein each bond has an aspect ratio greater than 6. 5. The dressing of claim 1, further comprising a first longitudinal bond and a second longitudinal bond spaced from the first longitudinal bond to form a flow channel. 6. The dressing of claim 1, further comprising a liquid-delivery channel, wherein the liquid-delivery channel comprises: a first portion of one of the plurality of liquid-impermeable layers having no fenestrations;a second portion of another of the plurality of liquid-impermeable layers having no fenestrations;a channel-forming bond coupling the first portion and the second portion except at a peripheral edge to define a liquid-delivery flow path; anda liquid aperture formed on the first portion of the liquid-impermeable layer for receiving a liquid. 7. A system for distributing reduced pressure to a tissue site, the system comprising: a reduced-pressure source;a reduced-pressure delivery conduit fluidly coupled to the reduced-pressure source;a reduced-pressure dressing fluidly coupled to the reduced-pressure delivery conduit; andwherein the reduced-pressure dressing comprises: at least two liquid-impermeable layers forming opposing sides of the dressing, each liquid-impermeable layer positioned in a stacked relationship adjacent at least one other liquid-impermeable layer, and each liquid-impermeable layer having a plurality of contact sites each proximate a contact site of an adjacent liquid-impermeable layer and a surface area between the contact sites coextensive with the surface area of the adjacent liquid-impermeable layer, wherein fenestrations are formed in the surface area of each liquid-impermeable layer;a plurality of spacers, each spacer at least partially formed at a contact site between the adjacent liquid-impermeable layers to provide displacement between the surface areas of the adjacent liquid-impermeable layers, wherein the plurality of spacers comprise a plurality of bonds forming a spaced pattern, each individual bond having an aspect ratio greater than three, a circular shape and coupling at least two of the adjacent liquid-impermeable layers at the contact site; anda plurality of flow paths formed by the plurality of spacers, the flow paths extending from a first side of the dressing formed by a first layer through the fenestrations to a second side of the dressing formed by a second layer of the adjacent liquid-impermeable layers for allowing fluid flow under reduced pressure through the adjacent liquid-impermeable layers to the tissue site. 8. The system for distributing reduced pressure of claim 7, wherein the plurality of spacers comprises an enlarged portion of at least one of the plurality of liquid-impermeable layers. 9. The system for distributing reduced pressure of claim 7, wherein the plurality of spacers comprises a plurality of folds formed in at least one of the plurality of liquid-impermeable layers. 10. The system for distributing reduced pressure of claim 7, wherein the plurality of spacers comprises a plurality of folds formed in at least one of the plurality of liquid-impermeable layers, and wherein the plurality of folds are formed by bonding a least a portion of the liquid-impermeable layers and folding the dressing to form micro-channels. 11. The system for distributing reduced pressure of claim 7, wherein the plurality of spacers comprises a plurality of folds formed in at least one of the plurality of liquid-impermeable layers, and wherein the plurality of folds are formed by disposing the dressing on a curved surface that creates at least some of the plurality of folds. 12. The system for distributing reduced pressure of claim 7, wherein the plurality of spacers comprises a plurality of folds formed by folding the dressing on itself to create at least one curved portion having a radius of and wherein the curved portion forms a micro-channel. 13. The system for distributing reduced pressure of claim 7, further comprising a first longitudinal bond and a second longitudinal bond spaced from the first longitudinal bond to form a flow channel. 14. The system for distributing reduced pressure of claim 7, further comprising a liquid-delivery channel, wherein the liquid-delivery channel comprises: a first portion of one of the plurality of liquid-impermeable layers having no fenestrations;a second portion of another of the plurality of liquid-impermeable layers having no fenestrations;a channel-forming bond coupling the first portion and the second portion except at a peripheral edge to define a liquid-delivery flow path; anda liquid aperture formed on the first portion of the liquid-impermeable layer for receiving a liquid. 15. A method of manufacturing a dressing for distributing reduced pressure to a tissue site, the method comprising steps of: providing at least two liquid-impermeable layers;positioning each liquid-impermeable layer adjacent to another liquid-impermeable layer in a stacked relationship so that each liquid-impermeable layer has a plurality of contact sites and a surface area between the contact sites coextensive with the surface area of the adjacent liquid-impermeable layer, the two liquid-impermeable layers forming opposing sides of the dressing; andforming fenestrations in the surface area of each liquid-impermeable layer;forming a plurality of spacers, each spacer at least partially formed between the adjacent liquid-impermeable layers to provide displacement between the surface areas of the adjacent liquid permeable layers, wherein the step of forming a plurality of spacers comprises forming a plurality of bonds in a spaced pattern, each individual bond having an aspect ratio greater than three, a circular shape and coupling at least two of the adjacent liquid-impermeable layers at the contact site;forming a plurality of flow paths with the plurality of spacers, the flow paths extending from a first side of the dressing formed by a first layer through the fenestrations to a second side of the dressing formed by the second layer of the adjacent liquid-impermeable layers for allowing fluid flow under reduced pressure through the adjacent liquid-impermeable layers to the tissue site. 16. The method of claim 15, wherein the step of forming a plurality of spacers comprises providing the plurality of liquid-impermeable layers with at least one enlarged portion. 17. The method of claim 15, wherein the step of forming a plurality of spacers comprises forming a plurality of folds in at least one of the plurality of liquid-impermeable layers. 18. A method for delivering reduced pressure to a tissue site, the method comprising the steps of: providing a reduced-pressure dressing, the reduced-pressure dressing comprising: at least two liquid-impermeable layers forming opposing sides of the dressing, each liquid-impermeable layer positioned in a stacked relationship adjacent at least one other liquid-impermeable layer, and each liquid-impermeable layer having a plurality of contact sites each proximate a contact site of an adjacent liquid-impermeable layer and a surface area between the contact sites coextensive with the surface area of the adjacent liquid-impermeable layer, wherein fenestrations are formed in the surface area of each liquid-impermeable layer;a plurality of spacers, each spacer at least partially formed at a contact site between the adjacent liquid-impermeable layers to provide displacement between the surface areas of the adjacent liquid-impermeable layers, wherein the plurality of spacers include a plurality of bonds forming a spaced pattern, each individual bond having an aspect ratio greater than three, a circular shape and coupling at least two of the adjacent liquid-impermeable layers at the contact site; anda plurality of flow paths formed by the plurality of spacers, the flow paths extending from a first side of the dressing formed by a first layer through the fenestrations to a second side of the dressing formed by a second layer of the adjacent liquid-impermeable layers for allowing fluid flow under reduced pressure through the adjacent liquid-impermeable layers to the tissue site;deploying the reduced-pressure dressing adjacent to the tissue site;fluidly coupling a reduced-pressure source to the reduced-pressure dressing; andactivating the reduced-pressure source. 19. The method of claim 18, wherein the tissue site is within an abdominal cavity, wherein the step of deploying the reduced-pressure dressing adjacent to the tissue site comprises deploying the reduced-pressure dressing through an open abdomen, and further comprising the step of removing the reduced-pressure dressing through a surgical incision less than 6 centimeters in length.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.