| 摘要 |
An anaesthetic gas scavenging apparatus has a body 14 and a chamber 54 defined within the body. An inlet port 20 is in air flow communication with the chamber for receiving anaesthetic gas expired by a patient. An outlet port 22 exhausts gas from the chamber under vacuum. An inlet air flow passageway 34 is provided between the inlet port and a release port 32 allowing gas into the chamber through a valve 40. The valve prevents back flow of gas from the chamber to the patient. The anaesthetic gas is heavier than air and flows to the bottom of the chamber before passing through openings 58 and through entry ports 42 of outlet air flow passageways which connect to the outlet port. The device may be fitted with a vacuum strength indicator 46. |
