The present disclosure provides for a control system for a flow therapy apparatus. The control system can control delivery of a fraction of delivered oxygen (FdO2) to a patient. The control system can maintain the FdO2 at a target level during a therapy session. The control system can automatically control an oxygen inlet valve in order to control the flow of oxygen to the patient.

A patient interface includes a positioning and stabilising structure having a knitted headgear strap comprising physical properties and/or characteristics that vary across the headgear strap. The entire headgear strap or portions thereof may be knitted as a single piece of material directly into its final shape. The variations in physical properties and/or characteristics may be provided by different knit structures and/or textile compositions.

A patient interface includes a positioning and stabilising structure having a knitted headgear strap comprising physical properties and/or characteristics that vary across the headgear strap. The entire headgear strap or portions thereof may be knitted as a single piece of material directly into its final shape. The variations in physical properties and/or characteristics may be provided by different knit structures and/or textile compositions.

A patient interface for delivery of a supply of pressurised air or breathable gas to an entrance of a patient's airways comprising: a cushion member that includes a retaining structure and a seal-forming structure permanently connected to the retaining structure; a frame member attachable to the retaining structure; and a positioning and stabilising structure attachable to the frame member.

A patient interface for delivery of a supply of pressurised air or breathable gas to an entrance of a patient's airways comprising: a cushion member that includes a retaining structure and a seal-forming structure permanently connected to the retaining structure; a frame member attachable to the retaining structure; and a positioning and stabilising structure attachable to the frame member.

A nasal ventilator assembly provides pressurized nasal oxygenation, ventilation and end tidal CO2 sampling with a movable piston, actuation of which opens and closes a vent to vent exhaled gasses to atmosphere. The piston is moved by force applied by gas supply and patient exhalation to a piston surface to actuate a spring to unblock the vent or vents to cause fluid communication between an air chamber and atmosphere. Also disclosed are an intelligent gas source and various valve configurations for use in the intelligent gas source for supplying gas to the pressurized nasal ventilator assembly or other nasal ventilation device.

A nasal ventilator assembly provides pressurized nasal oxygenation, ventilation and end tidal CO2 sampling with a movable piston, actuation of which opens and closes a vent to vent exhaled gasses to atmosphere. The piston is moved by force applied by gas supply and patient exhalation to a piston surface to actuate a spring to unblock the vent or vents to cause fluid communication between an air chamber and atmosphere. Also disclosed are an intelligent gas source and various valve configurations for use in the intelligent gas source for supplying gas to the pressurized nasal ventilator assembly or other nasal ventilation device.

Several embodiments of exhalation ports for use respiratory systems are described. Some of the embodiments provide an elongate body defining a lumen through which gases may flow. A plurality of tapered openings is arranged on a portion of the elongate body and configured to vent gases. A shroud extends from the elongate body and surrounds one or more of the plurality of tapered openings. The exhalation port is arranged to removably connect in-line with a circuit for delivering gases to a patient.

Several embodiments of exhalation ports for use respiratory systems are described. Some of the embodiments provide an elongate body defining a lumen through which gases may flow. A plurality of tapered openings is arranged on a portion of the elongate body and configured to vent gases. A shroud extends from the elongate body and surrounds one or more of the plurality of tapered openings. The exhalation port is arranged to removably connect in-line with a circuit for delivering gases to a patient.

The present disclosure provides systems and method for electric plasma synthesis of nitric oxide. In particular, the present disclosure provides a nitric oxide (NO) generation system configured to produce a controllable output of therapeutic NO gas at the point of care.