Systems for evaluating the respiratory function of an individual using forced oscillation technique (FOT) oscillometry include a blower controlled so as to apply FOT pressure oscillations on top of a low amplitude offset pressure. A controller continually adjusts the rotational speed of the blower to maintain a targeted time-varying pressure profile in the breathing air provided to the patient.

In accordance with the present invention, there is provided an adaptor or attachment which is suitable for integration into the patient circuit of a ventilation system, such as a non-invasive open ventilation system, is configured for attachment to any standard ventilation mask, and is outfitted with a jet pump which creates pressure and flow by facilitating the entrainment of ambient air. The adaptor comprises a base element and a nozzle element which are operatively coupled to each other. The base element further defines a throat and at least one entrainment port facilitating a path of fluid communication between the throat and ambient air. The nozzle element includes a jet nozzle, and a connector which is adapted to facilitate the fluid coupling of the nozzle element to a bi-lumen tube of the patient circuit. The connector includes both a delivery port and a sensing port. The jet nozzle and the delivery port collectively define a delivery line or lumen which fluidly communicates with the throat of the base element, and is placeable into fluid communication with the delivery lumen of the bi-lumen tube.

A patient interface for respiratory therapy includes an interface body and a housing for receiving the interface body. The patient interface also includes a securement member having a pair of support pads, each of the support pads configured to engage the face of a user. In some configurations, the interface body can be a cannula body or a mask body. In some configurations, the housing can receive different interface bodies, and the interface bodies are interchangeable.

A positive air pressure delivery device includes a housing having an inhalation inlet, an inhalation outlet, and an interior cavity in fluid communication with the inhalation inlet and outlet. A pressurized fluid inlet includes an outlet orifice in fluid communication with the interior cavity between the inhalation inlet and outlet. A sound reducer baffle has a convex dome surface positioned downstream of and facing the outlet orifice in a spaced apart relationship therewith. One embodiment of the housings includes a body, an end cap and a baffle insert. In various embodiments, the positive air pressure delivery device may be used in combination with other therapy devices, including an OPEP and pressure indicator. A kit and method of using the device are also provided.

An apparatus for providing a pressurised flow of breathable gas to the airways of a patient includes a pivotable outlet port structured and arranged to connect to an air delivery tube configured to pass the pressurised flow of breathable gas to a patient interface. The pivotable outlet port is able to pivot about at least one axis.

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 relates to a respiratory system for exercising and analysing respiration of a subject comprising: a breathing unit comprising: a mouthpiece connected to: at least one inhalation air way, at least one exhalation air way, and an electronic sensor unit comprising at least one pressure gauge for measuring air pressure in the mouthpiece, and a processing unit for collecting/storing and/or transmitting air pressure data.

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.

A patient interface includes a seal-forming structure, a shell, and an AAV. The shell and the seal-forming structure form at least a portion of a plenum chamber pressurizable to a therapeutic pressure. The shell includes a first port into the plenum chamber, the first port configured to allow air to flow between the plenum chamber and ambient. The shell includes a passageway including a second port into the plenum chamber, the passageway configured to communicate with a flow of air at positive pressure. The AAV is provided to the shell and configured to regulate flow through the first port and the second port to (1) provide a flow path for pressurized air when pressure in the plenum chamber is above a predetermined magnitude and (2) provide a breathable flow path when pressure in the plenum chamber is below the predetermined magnitude or not delivered.

There is a ventilator for mechanical ventilation during a breathing cycle including an inhalation cycle and an exhalation cycle. The ventilator is configurable to be in fluid communication with a supply of a first fluid. The ventilator includes an inhalation pathway and an exhalation pathway. A first fluid injector is in fluid communication with the supply of the first fluid for injecting the first fluid. The inhalation pathway receives the first fluid injected by the first fluid injector. A controller is operatively connected with the first fluid injector and programmed to selectively actuate the first fluid injector to inject the first fluid, which is received within the inhalation pathway such that an inhalation pressure in the inhalation pathway is within a predetermined range during the inhalation cycle.