US 12,168,097 B2
Breathing assistance apparatus
Rachel Adeline Miller, Auckland (NZ); Andrew Paul Maxwell Salmon, Auckland (NZ); Andre van Schalkwyk, Auckland (NZ); and Ella Marie Meisel, Auckland (NZ)
Assigned to FISHER & PAYKEL HEALTHCARE LIMITED, Auckland (NZ)
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed on Jun. 24, 2022, as Appl. No. 17/848,765.
Application 17/848,765 is a continuation of application No. 15/851,570, filed on Dec. 21, 2017, granted, now 11,400,247.
Claims priority of provisional application 62/596,454, filed on Dec. 8, 2017.
Claims priority of provisional application 62/438,206, filed on Dec. 22, 2016.
Claims priority of provisional application 62/438,099, filed on Dec. 22, 2016.
Prior Publication US 2023/0144814 A1, May 11, 2023
Int. Cl. A61M 16/10 (2006.01); A61M 16/00 (2006.01); A61M 16/06 (2006.01); A61M 16/16 (2006.01); A61M 16/08 (2006.01)
CPC A61M 16/0672 (2014.02) [A61M 16/0069 (2014.02); A61M 16/021 (2017.08); A61M 16/022 (2017.08); A61M 16/109 (2014.02); A61M 16/1095 (2014.02); A61M 16/16 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/0039 (2013.01); A61M 16/0683 (2013.01); A61M 16/0875 (2013.01); A61M 16/161 (2014.02); A61M 2202/0208 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/502 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus for delivering a humidified flow of gas, the apparatus comprising a housing, the housing receiving a humidification chamber, a cover that is connectable to the housing, a battery chamber defined by the cover and the housing, an upper surface of the cover comprising at least one of a cover groove and a cover ridge, the housing comprising a mating surface that adjoins the upper surface of the cover, the mating surface comprising at least one of a housing groove and a housing ridge that is configured to mate with the at least one of the cover groove and the cover ridge of the upper surface of the cover, mating the at least one of the cover groove and the cover ridge of the upper surface of the cover and the at least one of the housing groove and the housing ridge of the mating surface of the housing defines a tortuous path when the cover is installed, the tortuous path limiting an ingress of liquid and oxygen into the battery chamber, and one or more fasteners securing the cover to the housing, the one or more fasteners extending upward when the apparatus is positioned for use.