In an embodiment, a connector or connector assembly for attaching a nasal cannula with a gas delivery hose includes a sensor port for a sensor probe positioned near an end of a nasal cannula, which can allow the sensor probe to be placed closer to the patient's nostrils than previous connector parts allowed. The connector can be configured to advantageously allow the nasal cannula to rotate relative to the gas delivery hose, thereby allowing a patient or healthcare provider to untangle or otherwise straighten the hose or the cannula. The connector assembly can be configured to automatically align locking protrusions on a first component with locking recesses on a second component, where insertion of the second component within the first component causes the second component to rotate relative to the first component, thereby aligning the locking protrusions with associated locking recesses.

Dispensing systems for a ventilator circuit having a ventilator flow circuit with a normal inhalation flow path with a heat and moisture exchanger (HME), a flow sensor in communication with the ventilator circuit, an automated drug dispensing system with an actuator and a pressurized canister residing upstream of the HME, a bypass inhalation flow path residing downstream of the pressurized canister, and at least one electromechanical valve residing in the inhalation flow path to selectively open the valve which can be normally closed to define a closed bypass path. At least one controller opens the at least one electromechanical valve to open the bypass inhalation flow path and close the normal inhalation flow path through the HME only when the flow sensor indicates air flow is in an inhalation direction. Once the valve is open, the actuator dispenses medication through the bypass inhalation flow path to the patient.

A lung isolation tube assembly comprising a control valve that is adapted to be moved between a left lumen position, a right lumen position, and a both lumens position, a connector that is in fluid communication with the control valve and having a port, and a tube that is in fluid communication with the connector. The tube comprises a left lumen that is in fluid communication with the connector and a right lumen that is in fluid communication with the connector. The assembly also comprises a first cuff that is disposed around a portion of the right lumen and the left lumen and a second cuff that is disposed around the left lumen. The assembly is adapted to convey airflow or oxygen to a human lung via at least one of the left lumen and the right lumen. A method for isolating a human lung.

A headgear for securing a patient interface to a patient's head includes a rear member and a pair of lower strap members. Each lower strap member is sized and configured to be positioned on a respective side of the head of the patient when the headgear arrangement is disposed on the head of the patient. Each lower strap member includes a free end that is selectively directly coupleable to the patient interface. The arrangement also includes a pair of strap management arrangements, with each arrangement positioned on a respective side of the headgear and structured to locate/hold the free end of a lower strap member of the pair of lower strap members in a predetermined location on the respective side of the head of the patient when the headgear is positioned on the head of the patient and the free end is not directly coupled to the patient interface.

A respiratory ventilation device—for sending a fan-generated air flow into a duct extending to a respiratory mask—extends between lower (bottom) and upper ends. A ventilation chamber contains the fan and is connected to a humidifier, which has a water-accommodating reservoir and a connecting chamber adjacent the ventilation chamber. An intake opening leads out of the ventilation chamber. An exhaust opening leads into an exhaust channel attachable to the duct. A humidification chamber has the water reservoir. First and second openings are formed between the connecting and humidification chambers. The connecting chamber extends between the humidification and ventilation chambers. A separating wall extends between the connecting and humidification chambers. The first and second openings are made in the separating wall, which is arranged such that the humidification chamber extends between the bottom and the separating wall. The connecting chamber extends between the separating wall and the ventilation chamber.

A patient interface may include a dual chamber cushion assembly having a nasal chamber and an oral chamber. The nasal chamber may be arranged to deliver pressurized breathable gas to a patients nasal passages, and the oral chamber may be arranged to deliver pressurized breathable gas to the patients oral passages. The nasal chamber may be pressurized to a different level than an oral chamber to promote nasal breathing. An air passage may fluidly connect the nasal chamber and the oral chamber so that pressurized breathable gas may flow from the nasal chamber to the oral chamber.

Aspects of the present technology comprise a positioning and stabilising structure to hold a seal-forming structure in a therapeutically effective position on a head of a patient. The seal-forming structure may be constructed and arranged to form a seal with a region of the patients face surrounding an entrance to the patients airways for sealed delivery of a flow of air at a therapeutic pressure of at least 4 cmH2O with respect to ambient air pressure throughout the patients respiratory cycle in use. The positioning and stabilising structure may comprise a front hoop arranged to contact, in use, at least a region of the patients head superior to an otobasion superior of the patients head and a rear strap. The positioning and stabilising structure may comprise an adjustment mechanism for adjustment of the front hoop and the rear strap relative to the patients head, the adjustment mechanism being arranged in a single operation to adjust both the front hoop and rear strap to enable the positioning and stabilising structure to fit different size heads.

A nasal cannula includes a first tube, a second tube, a nasal connector tube, and a flow splitter. The nasal tube has first and second ends, the first end connected to a distal end of the first tube, the second end connected to a distal end of the second tube. First and second nasal prongs extend from and are fluidly coupled to the nasal connector tube. The flow splitter has an input and first and second outputs. The first output of the flow splitter is connected to a proximal end of the first tube. The second output of the flow splitter is connected to a proximal end of the second tube.

Devices, systems, and methods are disclosed which permit ventilation therapy concurrent with humidity and aerosol drug delivery. Exemplary mixer-heaters employ alternating actuation of humidity and drug nebulizers and may use a single constant power setting for the heating section while keeping a controlled outlet temperature over the course of treatment.

Systems and methods for hypoxia delivery are provided. An apparatus for providing intermittent normoxia and hypoxia intervals includes a breathing component, a normoxia fluid source, a hypoxia fluid source, a valve, and a control system. The valve is configured to disrupt flow from at least one of the normoxia fluid source and the hypoxia fluid source and the control system is configured to cause the at least one valve to switch between delivery of fluid from the normoxia fluid source and the hypoxia fluid source while maintaining positive pressure at the breathing component.