An oxygen concentrator comprises a product tank that is fluidly coupled to at least one sieve bed, and a product gas accumulator tank that is fluidly coupled to the product tank via a first conduit and to an outlet port via a second conduit, wherein the first conduit and the second conduit are disposed to allow at least a portion of product gas to flow from the product tank to the outlet port.

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 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.

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.

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.

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.

A patient interface includes a frame assembly including connectors operatively attachable to headgear, a cushion assembly provided to the frame assembly and including a seal-forming structure structured to form a seal with the patient's nose and/or mouth, and an air delivery connector provided to the frame assembly and operatively connected to an air delivery tube for supplying the air at positive pressure along an air flow path. The cushion assembly is structured to releasably connect to the frame assembly independently of the air delivery connector. The air delivery connector is structured to releasably connect to the frame assembly independently of the cushion assembly.

A patient interface system for delivering breathable gas to a patient includes a patient interface configured to sealingly engage the patient's face. A mechanism may be provided to ensure that an effective seal is maintained between the patient interface and the patient's face by preventing, reducing, minimizing or limiting effects of disruptive forces, such as tube drag, on the patient interface.

An apparatus for controlled delivery of nitric oxide. A pump draws air through an activated carbon filter and into a reaction chamber. The generation of nitric oxide occurs in the reaction chamber. A second pump draws the gas in the reaction chamber through a calcium hydroxide filter and delivers the nitric oxide through an orifice, or aperture, that controls the flow of nitric oxide delivered. The nitric oxide is filtered through a calcium hydroxide filter just prior to being made available for various nitric oxide therapies. Topical applications that provide a nitric oxide therapy to a surface are also provided.

A neck strap, a crown strap assembly and a headgear for a breathing mask. The neck strap for a headgear includes a one-piece main body adapted to engage a patient's neck, first and second lower connection portions adapted to connect to first and second lower mask connection straps, and first and second upper connection portions adapted to connect to respective first and second lateral crown straps.