US 12,268,816 B2
Breathing assistance apparatus
Andre Van Schalkwyk, Auckland (NZ); Andrew Paul Maxwell Salmon, Auckland (NZ); and Ramirlindo Agra Dawinan, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Appl. No. 17/309,189
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
PCT Filed Nov. 5, 2019, PCT No. PCT/IB2019/059462
§ 371(c)(1), (2) Date May 4, 2021,
PCT Pub. No. WO2020/095185, PCT Pub. Date May 14, 2020.
Claims priority of provisional application 62/755,928, filed on Nov. 5, 2018.
Prior Publication US 2021/0370014 A1, Dec. 2, 2021
Int. Cl. A61M 16/16 (2006.01); A61M 16/06 (2006.01); A61M 16/10 (2006.01)
CPC A61M 16/16 (2013.01) [A61M 16/0666 (2013.01); A61M 16/109 (2014.02)] 18 Claims
OG exemplary drawing
 
1. A breathing assistance apparatus comprising:
a housing with a recess configured to removably receive a liquid chamber;
a guard comprising a barrier, the barrier being movable between a covering position in which the barrier partly covers the recess and overlaps part of the liquid chamber when the liquid chamber is in the recess, and an access position in which the recess is less covered or is uncovered by the barrier and the barrier exposes the part of the liquid chamber when the liquid chamber is in the recess, wherein the barrier is biased to the covering position, and wherein the barrier is configured to move from the covering position to the access position by moving the liquid chamber in a removal direction from the recess;
wherein at least part of a base of the guard is flexible, wherein said at least part of the base is configured to flex as the guard moves; and
wherein the at least part of the base of the guard is configured so that the barrier can only move in two opposed directions by flexing the at least part of the base of the guard, and so that the barrier cannot move in other directions by flexing the at least part of the base of the guard even if a single region of the barrier is pushed by a user.