Abstract: An apparatus for providing breathing gas to a patient that includes a base unit to provide a first flow of gas and a second flow of gas and a humidification canister to be coupled to the base unit is described. The humidification canister includes a first gas flow path to receive and humidify the first flow of gas. A delivery tube assembly includes a first lumen configured for fluid communication with the first gas flow path to receive the humidified first flow of gas and a second lumen to receive the second flow of gas. A method of heating and humidifying the first flow of gas and insulating the first flow of gas with the second flow of gas is also described.

Abstract: A delivery tube assembly for delivering a breathing gas to a patient, the delivery tube includes a first lumen having an upstream portion and a downstream portion. The lumen is configured to deliver the breathing gas from the upstream portion to the downstream portion. A second lumen is configured to flow an insulating gas around the first lumen. A method of insulating a breathing gas with an insulating gas and discharging the insulating gas to atmosphere is also disclosed.

Abstract: A base unit for use in a breathing gas heating and humidification apparatus includes a gas source configured to generate an initial gas flow, the gas source having a gas source outlet and a flow divider in fluid communication with the gas source outlet. The flow divider is configured to divide the initial gas flow into a first flow of gas and a second flow of gas. The flow divider includes a first compartment including a first gas flow path for the first flow of gas and a second compartment including a second gas flow path for the second flow of gas. A heater is disposed in the second compartment. A method for use in generating breathing gas and insulating gas from a gas source is also disclosed.

Abstract: A humidification canister for humidifying a breathing gas, the humidification canister includes a fluid supply configured to supply a fluid and a first gas flow path in fluid communication with the fluid supply. A first gas flow path is configured to humidify the breathing gas with the fluid. A second gas flow path at least partially surrounds the first gas flow path. A method of insulating a breathing gas in a humidification canister using a gas is also disclosed.

Abstract: A kit for coupling a container holding a liquid to a fluid path of a humidifier is disclosed. The kit includes a spike configured to pierce the container and to pass the liquid from the container to a vent through a tube. The vent is configured to vent gas from the liquid while retaining the liquid. The vent has a vent body including an inlet configured for coupling to the tube to receive the liquid from the tube and an outlet configured to pass the liquid to the humidifier. A cap opening is positioned to vent the gas. A filter is positioned over the cap opening to prevent the escape of the liquid therethrough. A cap is coupled to the vent body over the cap opening and has at least one opening therein to allow passage of gas from the opening to atmosphere.

Abstract: A device and system for delivering breathing gas to a patient is disclosed. The device includes a single nasal prong insertable into a nare. The single nasal prong is sized to allow gas passage between the single nasal prong and the nare. The device also includes a lumen in fluid communication with the single nasal prong. A method of delivering breathing gas to the patient is also disclosed.

Abstract: Systems and methods for delivering medication to patients are disclosed. The system includes an infuser including a membrane. The infuser entrains a fluid from a first side of a membrane and a medication into a gas on a second side of the membrane to form a medicated humidified gas. A delivery system is coupled to the infuser. The delivery system is configured to deliver the medicated humidified gas to the patient. The method includes entraining a fluid on a first side of a membrane and a medication into a gas on a second side of the membrane to form a medicated humidified gas and delivering the medicated humidified gas to the patient using a delivery system.

Abstract: An apparatus is provided for delivering heated and humidified air to the respiratory tract of a human patient for respiratory tract therapy and treatment. The apparatus includes a supply unit (11) and a delivery tube (28) that can be releasably connected to the supply unit (11). Methods of respiratory tract therapy and treatment are also provided.