US 12,220,493 B2
Nitric oxide producing collagen/ORC dressing
Alexander Waite, West Sussex (GB); and Carrina Ward, West Sussex (GB)
Assigned to Systagenix Wound Management, Limited, West Sussex (GB)
Appl. No. 17/259,650
Filed by SYSTAGENIX WOUND MANAGEMENT, LIMITED, West Sussex (GB)
PCT Filed Jul. 15, 2019, PCT No. PCT/IB2019/056038
§ 371(c)(1), (2) Date Jan. 12, 2021,
PCT Pub. No. WO2020/016758, PCT Pub. Date Jan. 23, 2020.
Claims priority of provisional application 62/698,552, filed on Jul. 16, 2018.
Prior Publication US 2021/0330855 A1, Oct. 28, 2021
Int. Cl. A61L 15/44 (2006.01); A61L 15/22 (2006.01); A61L 15/64 (2006.01)
CPC A61L 15/44 (2013.01) [A61L 15/225 (2013.01); A61L 15/64 (2013.01); A61L 2300/114 (2013.01); A61L 2300/404 (2013.01); A61L 2300/412 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A wound dressing composition comprising a first layer and a second layer, wherein the first layer comprises a collagen and an oxidized cellulose, and wherein the second layer comprises a nitrite source, optionally wherein the collagen is selected from the group consisting of a mammalian collagen, a marine collagen, a porcine collagen, a bovine collagen, an ovine collagen, an equine collagen, a mammalian recombinant collagen, a human recombinant collagen and any combination thereof.