US 12,232,933 B2
Dressing for providing low oxygen environment
Thomas E. Lash, Chardon, OH (US); Timothy Wojciechowski, Westlake, OH (US); John Buan, Maple Grove, MN (US); Richard L. Middaugh, Rocky River, OH (US); and Edward B. Armstrong, Chagrin Falls, OH (US)
Assigned to ADVANCED DRESSING, LLC, Cleveland, OH (US)
Appl. No. 17/624,635
Filed by Advanced Dressing, LLC, Cleveland, OH (US)
PCT Filed Jul. 29, 2020, PCT No. PCT/US2020/043950
§ 371(c)(1), (2) Date Jan. 4, 2022,
PCT Pub. No. WO2021/021851, PCT Pub. Date Feb. 4, 2021.
Claims priority of provisional application 62/880,317, filed on Jul. 30, 2019.
Prior Publication US 2022/0257422 A1, Aug. 18, 2022
Int. Cl. A61F 13/00 (2024.01); A61B 46/20 (2016.01); A61F 13/05 (2024.01); A61M 1/00 (2006.01); B01J 20/04 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01)
CPC A61F 13/00063 (2013.01) [A61B 46/20 (2016.02); A61F 13/05 (2024.01); A61M 1/962 (2021.05); B01J 20/046 (2013.01); B01J 20/26 (2013.01); B01J 20/2803 (2013.01); B01J 20/28035 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A dressing comprising:
an application site covering;
an oxygen scavenger provided with or positioned with respect to the application site covering so as to remove oxygen from a volume beneath the application site covering and around an application site covered by the application site covering, the application site covering and the oxygen scavenger being configured to maintain gas pressure beneath the application site covering around the application site that is above a therapeutic negative pressure while the oxygen scavenger is consuming oxygen beneath the application site covering; and
a wicking material that is configured to shrink when atmospheric pressure pushing on the application site covering exceeds an internal air pressure beneath the application site covering and a mechanical compression resistance pressure of the wicking material.