US 12,121,656 B2
Accessory for removing and sequestering waste anesthetic gas
Alice Jane Karp, Philadelphia, PA (US); Delara Kiani, Philadelphia, PA (US); Cary Hess, Philadelphia, PA (US); and Corey Jameson, Philadelphia, PA (US)
Assigned to Thomas Jefferson University, Philadelphia, PA (US)
Filed by Thomas Jefferson University, Philadelphia, PA (US)
Filed on Oct. 16, 2020, as Appl. No. 17/072,674.
Claims priority of provisional application 62/915,724, filed on Oct. 16, 2019.
Prior Publication US 2021/0113789 A1, Apr. 22, 2021
Int. Cl. A61M 16/00 (2006.01); A61M 1/00 (2006.01); A61M 16/01 (2006.01); A61M 16/06 (2006.01); A61M 16/08 (2006.01)
CPC A61M 16/009 (2013.01) [A61M 1/784 (2021.05); A61M 1/86 (2021.05); A61M 16/06 (2013.01); A61M 16/0816 (2013.01); A61M 2202/0241 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A gas sequestration device, comprising:
a toroidal inner frame;
an outer skirt attached to the toroidal inner frame;
a plurality of inlet ports or ducts positioned within the inner frame; and
at least one evacuation port positioned on the outer skirt, each evacuation port being fluidly connected to the plurality of inlet ports or ducts;
wherein at least one gap in the shape of a circumferential flow loop is formed between the gas sequestration device and an outer perimeter of a mask, wherein the flow loop is separated and spaced apart from both a central mask opening and a central portion of the mask adjacent to the central mask opening, and wherein the at least one gap is configured to create circumferential suction around the outer perimeter of the mask when suction is applied to the plurality of inlet ports.