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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0259026 (2014-04-22) |
등록번호 | US-9956121 (2018-05-01) |
우선권정보 | GB-0722820.8 (2007-11-21); GB-0817020.1 (2008-09-17) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 442 |
A method and apparatus are disclosed for dressing a wound. The apparatus comprises an absorbent layer for absorbing wound exudate, a liquid impermeable, gas permeable filter layer over the absorbent layer, a cover layer comprising at least one orifice and a first liquid and gas permeable transmissio
A method and apparatus are disclosed for dressing a wound. The apparatus comprises an absorbent layer for absorbing wound exudate, a liquid impermeable, gas permeable filter layer over the absorbent layer, a cover layer comprising at least one orifice and a first liquid and gas permeable transmission layer underlying the absorbent layer. The transmission layer is in fluid communication with the filter layer.
1. A system for applying negative pressure to a wound site, the system comprising: a wound dressing comprising: a perforated wound contact layer for contacting the wound site;a first transmission layer for distributing negative pressure overlying the wound contact layer;an absorbent layer for absorb
1. A system for applying negative pressure to a wound site, the system comprising: a wound dressing comprising: a perforated wound contact layer for contacting the wound site;a first transmission layer for distributing negative pressure overlying the wound contact layer;an absorbent layer for absorbing wound exudate via the wound contact layer and the first transmission layer, the absorbent layer overlying the first transmission layer;a second transmission layer overlying and in direct contact with the absorbent layer, the second transmission layer adapted to distribute negative pressure;a cover layer overlying the second transmission layer, the cover layer comprising at least one aperture and further comprising a border region and a central region, wherein the cover layer is directly secured to the wound contact layer in the border region;a filter provided over the second transmission layer and positioned at the at least one aperture in the cover layer, and;a negative pressure source configured to be in fluid communication with the at least one aperture in the cover layer via a conduit, the negative pressure source configured to generate negative pressure under the cover layer. 2. The system of claim 1, wherein a peripheral region of the first transmission layer and a peripheral region of the second transmission layer are pinched together to provide a fluid communication path around a peripheral edge of the absorbent layer. 3. The system of claim 2, wherein the negative pressure source is configured to communicate negative pressure to the wound site via at least one fluid transmission path passing through the perforations in the wound contact layer and through the peripheral region of the first transmission layer and the peripheral region of the second transmission layer alongside at least one edge of the absorbent layer. 4. The system of claim 1, wherein the filter is in fluid communication with the absorbent layer. 5. The system of claim 1, wherein the wound dressing comprises a square shape having equal side lengths with rounded corner regions. 6. The system of claim 1, wherein the at least one aperture of the cover layer is positioned in the central region of the upper surface of the cover layer. 7. The system of claim 1, further comprising an adhesive provided on an underside of the wound dressing. 8. The system of claim 7, further comprising a releasable protective layer on a lower surface of the wound contact layer. 9. The system of claim 1, wherein the central region of the cover layer is a central raised region, and wherein the second transmission layer acts as a manifold and a diffuser to help spread the negative pressure generated by the pump. 10. The system of claim 1, wherein the filter comprises a hydrophobic material. 11. The system of claim 1, wherein the filter comprises PTFE. 12. The system of claim 1, the filter comprising a first filter layer and a secondary filter layer. 13. The system of claim 1, wherein the filter is secured to the cover layer with an adhesive. 14. The system of claim 1, wherein the wound dressing is disposable after a single use. 15. The system of claim 14, wherein the negative pressure source is reusable. 16. The system of claim 1, wherein the wound contact layer and the cover layer hold the wound dressing together. 17. The system of claim 1, wherein the filter is provided under the cover layer. 18. The system of claim 1, wherein the filter is provided over the cover layer.
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