| 摘要 |
Apparatus for supplying oxygen or anesthetic gas through a mask (10) on the face of a patient and including a flexible gas reservoir bag (14) having a manually operated valve assembly (16) attached to an end of the bag (14) for controlling the internal fluid pressure in the bag (14). A predetermined gas supply (21) has a vent valve means (22) in its supply lines (17, 20) for diluting the predetermined gas with ambient air as desired. |
