Abstract: An adapter for a humidifier is provided that mounts on a sealed container of purified or sterile water and connects usually to a flowmeter which is attached to a pressurized gas container. The adapter includes a spike member to pierce the container wall, a pressure chamber defined between the inner wall of the adapter and the spike member, and port means in the adapter wall establishing communication between the pressure chamber and the outside atmosphere. An audible relief valve means is located in the port to effect audible pressure relief under above normal pressure conditions in the pressure chamber during the humidifying process while pressurized gas is being introduced into the water to moisten the gas.

Abstract: A humidifier-nebulizer apparatus is disclosed which includes a liquid reservoir having a sterile liquid such as water contained therein, the liquid reservoir having a sealed wall portion adapted to be pierced by the piercing element of an adapter head when mounted on the liquid reservoir. The adapter head may be attached to a source of pressurized gas, such as oxygen, and includes control valve means movable to discharge a nebulized gas-liquid mixture from the adapter head during a nebulizing mode of operation. The control valve means is also adjustable to a position to introduce oxygen into the liquid reservoir in a manner to effect discharge of humidified oxygen through a discharge port on the liquid reservoir.

Abstract: A humidifier-nebulizer apparatus is disclosed which includes a liquid reservoir having a sterile liquid such as water contained therein, the liquid reservoir having a sealed wall portion adapted to be pierced by the piercing element of an adapter head when mounted on the liquid reservoir. The adapter head may be attached to a source of pressurized gas, such as oxygen, and includes control valve means movable to discharge a nebulized gas-liquid mixture from the adapter head during a nebulizing mode of operation. The control valve means is also adjustable to a position to introduce oxygen into the liquid reservoir in a manner to effect discharge of humidified oxygen through a discharge port on the liquid reservoir.