Gas nebulizing apparatus

Apparatus for administering nebulized gas to a patient includes a connector having a tubular nozzle communicating with an oxygen supply, a tubular spike portion, and a smaller diameter water supply tube within the spike portion and extending beyond the end of the spike portion for first piercing the stopper in an intravenous solution bottle. The spike portion enlarges the hole pierced by the water supply tube. The oxygen supplied through the nozzle creates a vacuum in the water supply tube, drawing water from the bottle into the oxygen stream. The oxygen and water mixture impinges against a small sphere, nebulizing into a fog of small water droplets within a chamber. A flexible tube connected to the chamber delivers the nebulized fog to the patient. A rotatable valve structure controls the entrance of ambient air to enter the nebulizing chamber. By rotating one of the valve elements different concentrations of nebulized oxygen can be administered to the patient.