| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotatable elbow capable of smoothly performing air intake and exhaust of CO, and a mask assembly.SOLUTION: An elbow for respiratory masks includes: (a) a first portion connected to an air supply conduit; (b) a second portion connected to a frame (10) of the respiratory mask (5); and (c) a vent hole for leading air out to an ambient atmosphere from the inside of the respiratory mask. A baffle (161) has at least one bending portion at an end of the second portion, and the baffle is configured to be able to lead an exhaust gas out, in a second direction which is substantially opposite to a first direction and is substantially parallel with a second axial line, from a nasal breathing cavity through the vent hole. |
