A nasal cannula is described herein for respiratory therapy which includes a first gas supply tub with a distal end terminating in a first connector, and a nasal cannula body which includes a first end rotatably coupled to the first connector, a second end opposite the first end, a longitudinal axis extending from the first end to the second end, and a first nasal prong in fluid communication with the first gas supply tube. The first nasal prong is rotatable relative to the first gas supply tube about the longitudinal axis of the nasal cannula body.

The invention relates to an artificial airway device to facilitate lung ventilation of a patient, comprising an airway tube, a gastric drain tube and a mask at one end of the airway tube, the mask including a backplate and having a peripheral formation capable of forming a seal around the circumference of the laryngeal inlet, the peripheral formation surrounding a hollow interior space or lumen of the mask and the airway tube opening into the lumen of the mask, wherein the mask includes an atrium for passage to the gastric drain tube of gastric matter leaving the oesophagus.

A respiratory assistance system can provide high flow therapy to patients. The respiratory assistance system can include a patient interface that can deliver a gas flow to a patient and a gas source that can drive the gas flow towards the patient interface at an operating flow rate. The system can include a controller for controlling the operating flow rate of the gas. The controller can apply multiple test flow rate values in a range as the operating flow rate. For each of the test flow rate values, the controller can measure a patient parameter. The controller can determine a new flow rate value based on the measured patient parameters. Patient parameters can include respiration rate, work of breathing, or any other parameters related to the respiratory circuit.

A non-invasive ventilation system may include at least one outer tube with a proximal lateral end of the outer tube adapted to extend to a side of a nose. The at least one outer tube may also include a throat section. At least one coupler may be located at a distal section of the outer tube for impinging at least one nostril and positioning the at least one outer tube relative to the at least one nostril. At least one jet nozzle may be positioned within the outer tube at the proximal lateral end and in fluid communication with a pressurized gas supply. At least one opening in the distal section may be adapted to be in fluid communication with the nostril. At least one aperture in the at least one outer tube may be in fluid communication with ambient air. The at least one aperture may be in proximity to the at least one jet nozzle.

A cushion assembly for a patient interface includes an elastomeric seal-forming portion with a dome-shaped superior region that is intersected by the sagittal plane in the vicinity of a superior tangent point. The seal-forming portion further including a saddle-shaped inferior region that is intersected by the sagittal plane and includes an inferior tangent point. A first support region is located on one side of the sagittal plane between the inferior region and the superior region, the exterior surface of the elastomeric seal forming portion at the first support region being cylinder-shaped and/or saddle-shaped. In addition, a blowout prevention system is configured to counter a force acting on the unsupported edge of the elastomeric seal-forming portion due to a pressure within the chamber, the blowout prevention system being attached to the elastomeric seal-forming portion at the first support region of the elastomeric seal-forming portion.

Systems and methods are provided for anesthetic agent level sensing. In one embodiment, a system for a level sensor for an anesthetic vaporizer includes a measurement tube including a float positioned therein, a bottom portion of the measurement tube coupled to a cap having a central opening, a retaining bracket coupled to a top portion of the measurement tube, an optical sensor housed within the retaining bracket, the optical sensor including a light source positioned to emit light toward an interior of the measurement tube and a light detector positioned to receive light from the interior of the measurement tube, and an optical window housed within the retaining bracket and coupled between the optical sensor and the interior of the measurement tube.

A device and method of generating an enriched gas within a nasal vestibule of a patient includes a housing, a chamber, a chamber inlet, a pump, a molecular sieve bed, a release outlet, and a breath duct. The chamber is configured to be received within the nasal vestibule. The pump is configured to direct an ambient air from an ambient environment into the chamber. The molecular sieve bed is positioned within the chamber and configured to collect a predetermined molecule from the ambient air thereby generating the enriched gas. The release outlet is configured to discharge the enriched gas from the chamber into the nasal vestibule. The breath duct longitudinally extends through the housing such that the breath duct is configured to fluidly communicate a fluid flow through the housing for nasal breathing by the patient while the chamber is positioned within the nasal vestibule.

The present invention relates to a device to urge the mouth closed during sleep to reduce snoring and/or treat sleep disorders such as sleep apnea. In one aspect, the device includes a jaw-blocking object that is secured beneath the chin of a user and also contacting the clavicular region of the upper chest area. In another aspect, a device of the invention includes a jaw-blocking object in combination with a CPAP mask and headgear for use with a CPAP system.

An oscillating positive expiratory pressure system including an oscillating positive expiratory pressure device having a chamber, an input component in communication with the chamber, wherein the input component is operative to sense a flow and/or pressure and generate an input signal correlated to the flow or pressure, a processor operative to receive the input signal from the input component and generate an output signal, and an output component operative to receive the output signal, and display an output.

Embodiments of an adaptor for delivering diffused aromatic agents to a user of a CPAP machine is disclosed in this document. The adaptor may include a connector body, a diffuser pad disposed within the connector body, and at least one coupling mechanism on the connector body coupling the connector body within the air supply and positioning the diffuser pad within the airflow of a CPAP machine. The adaptor may be configured to couple directly to a CPAP mask. Similarly, the adaptor may be configured to be placed in the airflow between the CPAP air generator and the mask. The adaptor may be configured such that no modification of the existing CPAP hose, machine, or mask is required.