| 摘要 |
A disposable anesthesia face mask comprising a shell member having an annular flange and a do-nut shaped pneumatic sealing cushion attached to the shell member annular flange. The shell member and its flange are pear-shaped defining a nasal portion of first transverse extent, a mouth portion of second transverse extent, and an under-the-chin engagement portion of third transverse extent where the second transverse extent is greater than the first transverse extent and the third transverse extent is greater than the second transverse extent. |
