US 11,744,975 B2
Method of manufacturing an anesthesia face mask
Steven Saad, Knoxville, TN (US)
Assigned to KOO MEDICAL EQUIPMENT (SHANGHAI) CO., LTD., Shanghai (CN)
Filed by Koo Medical Equipment (Shanghai) Co., Ltd., Shanghai (CN)
Filed on Oct. 25, 2019, as Appl. No. 16/663,405.
Prior Publication US 2021/0061963 A1, Mar. 4, 2021
Int. Cl. A61M 16/06 (2006.01)
CPC A61M 16/0622 (2014.02) [A61M 16/06 (2013.01); A61M 2207/00 (2013.01); A61M 2207/10 (2013.01); A61M 2210/0606 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of manufacturing a mask, the method comprising:
providing a shell having an inlet formed on a body of the shell and a flange formed around a lower end of the body, the flange forming a surface on a bottom thereof;
providing a first film substrate sheet;
providing a second film substrate sheet;
aligning the first film substrate sheet with the second film substrate sheet such that substantially no air is trapped between the first film substrate and the second film substrate;
bonding the first film substrate sheet to the second film substrate sheet around an outer edge and around an inner edge, the inner edge bonded in a shape of a cutout to fit around a nose and mouth of a patient;
cutting the first film substrate sheet and the second film substrate sheet around the outer edge and the inner edge of the first film substrate sheet and the second film substrate sheet such that the cutout is formed within the inner edge of the first film substrate sheet and the second film substrate sheet; and
joining the shell to the first film substrate sheet at the surface formed on the bottom of the flange of the shell.