| 摘要 |
A mask for delivery of oxygen to a patient, comprising a body having a peripheral portion to sit comfortably on a patient's face, a central portion, and bridge portions extending between the central portion and the peripheral portion and integral therewith, the central portion having an inner surface and an outer surface, the inner surface oriented towards the patient's face and spaced over the patient's nose and mouth, the inner surface of the central portion including a wall circumscribing a base, the wall and base being of generally concave configuration and circumscribing a centrally positioned oxygen delivery aperture extending through the central portion, the wall and base configured so as to act as an oxygen diffuser to direct the flow of oxygen generally towards the patient's nose and mouth when the mask is in use. |
