A mount provides a structure that facilitates coupling of a nebuliser downstream of a humidifier chamber and upstream of a conduit that delivers conditioned breathing gases to a patient or user. The mount can couple together a chamber, a nebulizer and a conduit.

A patient interface comprises a support structure and a seal-forming structure. The support structure is arranged to support the sealing portion and is configured to connect to the frame. The sealing portion comprises textile and is attached to the support structure along an outer perimeter of the sealing portion such that in use the sealing portion may be in tension due to reactive stress of the support structure and/or a resilient stretch characteristic of the textile such that the sealing portion exerts a force against the patient's face.

A modular ventilator according to the present disclosure may include a ventilator core and a ventilator service module. The ventilator core provides the basic functionality necessary for delivering suitably oxygenated air to a patient without most or all typical patient monitoring functions except a basic alarm or safety alert triggered by loss of pressure at the output. Additional patient monitoring functions are embodiment in the removable ventilator service module, which may be powered by its own power source and/or by the power source of the ventilator core when coupled thereto. The ventilator core is configured for low cost manufacture and ease of operation and may be portable so as to be easily deployable in a non-hospital setting. The ventilator core may employ a venture-based O.sub.2 regulator for adjusting the oxygen-air mixture at the output, which may facilitate the manufacture of the ventilator core at lower cost than conventional ventilators.

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.

Systems and methods are provided for portable and compact nitric oxide (NO) generation that can be embedded into other therapeutic devices or used alone. In some embodiments, an ambulatory NO generation system can be comprised of a controller and disposable cartridge. The cartridge can contain filters and scavengers for preparing the gas used for NO generation and for scrubbing output gases prior to patient inhalation. The system can utilize an oxygen concentrator to increase nitric oxide production and compliment oxygen generator activity as an independent device. The system can also include a high voltage electrode assembly that is easily assembled and installed. Various nitric oxide delivery methods are provided, including the use of a nasal cannula.

A patient interface comprising a plenum chamber configured to receive in use a flow of air at the therapeutic pressure for breathing by a patient, a seal-forming structure configured to form a seal with or around the patient's nose and/or mouth, a positioning and stabilising structure configured to hold the seal-forming structure in a sealing position, and at least one inflatable body. In one form, an inflatable body is provided to a portion of the positioning and stabilising structure. In another form the inflatable body is provided to a hoop structure. In another form, the patient interface comprises a lever arrangement, wherein an inflatable body is provided to the lever arrangement. In yet another form, the seal-forming structure comprises an inflatable body. The patient interface may be configured to limit or prevent mouth leak or mandible movement during CPAP therapy, adjust the fit of the positioning and stabilising structure on the patient's head, and/or improve the seal formed with patient's face in use.

A shroud for a mask system includes a retaining portion structured to retain a frame, a pair of upper headgear connectors each including an elongated arm and a slot at the free end of the arm adapted to receive a headgear strap, and a pair of lower headgear connectors each adapted to attach to a headgear strap. The retaining portion, the upper headgear connectors, and the lower headgear connectors are integrally formed as a one piece structure.

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.

A percussive ventilation breathing head is adapted to be supplied with a flow of pulsatile gas fed to an elongated breathing head body at a proximal end thereof. The breathing head body defines an interior passageway therein. A reciprocating injector shuttle is movably mounted in the breathing head passageway. The shuttle moves distally due to the pulsatile gas, assisted by a diaphragm and a venturi-like jet nozzle which nozzle pulls nebulized aerosol from a depending plenum and a nebulizer attached below the depending plenum. A depending body defines the plenum. The generally cylindrical nebulizer is attached below the depending body. The shuttle is also biased in a proximal direction within the interior passageway and moves proximally due to the bias. The shuttle defines an internal flow passage from a proximal shuttle input port to a distal shuttle output port at the distalmost mouth of the percussive ventilation breathing head body.

A breathing arrangement includes a patient interface, at least one inlet conduit, and a headgear assembly. The patient interface includes a mouth covering assembly including a cushion structured to sealingly engage around exterior of a patient's mouth in use, a nozzle assembly including a pair of nozzles structured to sealingly engage within nasal passages of a patient's nose in use, and a flexible element connecting the mouth covering assembly and the nozzle assembly. The at least one inlet conduit is structured to deliver breathable gas into at least one of the mouth covering assembly and the nozzle assembly for breathing by the patient. The headgear assembly is removably connected to at least one of the mouth covering assembly and the nozzle assembly so as to maintain the mouth covering assembly and the nozzle assembly in a desired position on the patient's face.