| 摘要 |
A system and method for connecting a secondary source of a medical gas to a medical gas supply system which enables uninterrupted gas supply without backfeeding. A control panel (10) is connected in the system fluidly between primary supply sources (44, 45, 46) holding types of medical gas and gas outlets (54, 55, 56) for the delivery of the respective types of medical gas to devices in a medical facility. For each gas type the control panel houses a respective shut off valve (24, 25, 26). The shut-off valve may be closed to isolate the upstream source from the downstream components. The control panel also houses for each gas type a respective secondary gas inlet port (68, 69, 70). The inlet ports have connections specific to the type of gas which may be received therethrough. Check valves are provided to enable fluid flow only into the inlet ports. A removable cover or face (11) is normally installed on the control panel. The face can only be installed when the shut-off valves are all open. To connect a secondary gas source the face is removed from the control panel. The respective shut-off valve is closed and a secondary source of medical gas is fluidly connected to the appropriate inlet port to maintain the supply of gas.
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