Wound dressings comprising a plurality of liquid-expandable articles
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-013/00
A61L-015/28
A61M-035/00
A61F-013/02
A61L-015/42
A61L-015/60
출원번호
US-0163962
(2014-01-24)
등록번호
US-9623223
(2017-04-18)
발명자
/ 주소
Steinbaugh, John
Bullard, Mary
Barofsky, Andrew
출원인 / 주소
REVMEDX, Inc.
대리인 / 주소
Schwabe, Williamson & Wyatt, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
Provided herein are self-expanding wound dressings that include a first outer layer, a second outer layer, and a liquid-expandable layer disposed between the first outer layer and the second outer layer, wherein the liquid-expandable layer includes a plurality of liquid-expandable articles retained
Provided herein are self-expanding wound dressings that include a first outer layer, a second outer layer, and a liquid-expandable layer disposed between the first outer layer and the second outer layer, wherein the liquid-expandable layer includes a plurality of liquid-expandable articles retained by a substrate, wherein the plurality of liquid-expandable articles expand to form expanded articles upon contact with a liquid. Also provided is a method of treating an individual having a bleeding wound, the method including applying a self-expanding wound dressing to the wound. Also provided are methods of manufacturing a wound dressing, the methods including forming an absorbent material into a plurality of liquid-expandable articles, coupling the plurality of liquid-expandable articles to a substrate to form a liquid-expandable layer, and positioning the liquid-expandable layer between a first outer layer and a second outer layer to form the wound dressing.
대표청구항▼
1. A wound dressing, comprising: a first outer layer;a second outer layer; anda liquid-expandable layer positioned between the first outer layer and the second outer layer, wherein the liquid-expandable layer comprises a plurality of liquid-expandable articles each independently attached to a backin
1. A wound dressing, comprising: a first outer layer;a second outer layer; anda liquid-expandable layer positioned between the first outer layer and the second outer layer, wherein the liquid-expandable layer comprises a plurality of liquid-expandable articles each independently attached to a backing layer,wherein the backing layer is in sheet form,wherein the backing layer has a first major surface, and second, opposing major surface and the plurality of liquid-expandable articles is attached to the first major surface and arranged in a predetermined pattern on the backing layer, wherein attachment points of the liquid-expandable articles to the backing layer are substantially coplanar with each other,wherein the plurality of liquid-expandable articles expand away from the first major surface of the backing layer to form expanded articles upon contact with a liquid,wherein the expanded articles have a lateral dimension and a longitudinal dimension and expansion of the plurality of liquid-expandable articles is principally along the longitudinal dimension. 2. The wound dressing of claim 1, wherein at least one of the first outer layer and second outer layer comprises a porous material. 3. The wound dressing of claim 1, wherein the first outer layer and second outer layer are joined to form one or more pockets to receive the liquid-expandable layer therein. 4. The wound dressing of claim 1, wherein the plurality of liquid-expandable articles comprises compressed sponge. 5. The wound dressing of claim 4, wherein the compressed sponge comprises regenerated cellulose. 6. The wound dressing of claim 1, wherein the liquid-expandable articles comprise a substantially cylindrical shape. 7. The wound dressing of claim 1, wherein the liquid-expandable articles in the predetermined pattern are spaced sufficiently far apart so that the wound dressing remains flexible. 8. The wound dressing of claim 1, wherein the predetermined pattern defines one or more regions without liquid-expandable articles. 9. The wound dressing of claim 1, wherein the liquid-expandable articles expand to 80% or greater of their maximum expansion capacity within 30 seconds following immersion in water or saline. 10. The wound dressing of claim 9, wherein the volume ratio of expanded articles to liquid-expandable articles is at least 4:1. 11. The wound dressing of claim 1, wherein the first outer layer, the second outer layer and the liquid-expandable layer are laminated to form an elongated sheet. 12. The wound dressing of claim 1, wherein a pre-expansion volume of each liquid-expandable article is from 0.7 mm3 to 7000 mm3. 13. The wound dressing of claim 1, further comprising one or more therapeutic agents coupled to at least one of the first outer layer, the second outer layer and the liquid-expandable layer. 14. The wound dressing of claim 1, further comprising a second plurality of liquid-expandable articles attached to the second major surface.
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이 특허에 인용된 특허 (5)
Fallon Timothy J. ; Maresh John G. ; Wilkie James A., Apparatus for applying a hemostatic agent onto a tissue.
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