A breathing apparatus configured to be worn on the face of a person is disclosed. The apparatus comprises a breathing manifold having an internal space with openings for a connection to the nasal passage and mouth of the user and openings for one or more gas-exchange ports. An armature holds the manifold in position relative to the face and provides pressure against the nose and mouth to provide a sealed interface between the internal volume of the apparatus and each of the nose and mouth. According to a salient aspect, the armature is configured to securely hold the breathing apparatus to the person's face without requiring additional securements such as head straps. The armature also includes one or more attachment points for supporting other components of the breathing apparatus including, for example, an air-inlet filter and an exhaust valve, through which air can be exchanged.

Oxygen concentrator methods and apparatus estimate sieve bed effective capacity. Estimation applies function(s) to a parameter of a measured pressure-time characteristic of the bed, characteristic of a phase of an adsorption cycle of the concentrator at a predetermined motor speed of its compression system. Estimation may involve operating the concentrator at a predetermined bed pressure and measuring a mass flow of gas entering or exiting the bed, and may use the measured mass flow and one or more functions. Estimation may involve a measured bed exhaust mass flow for a purge phase when bed pressure is regulated to maintain a predetermined target pressure using motor speed adjustment. The estimation may apply exhaust mass flow function(s) to the measured exhaust mass flow. Estimation of the effective capacity may involve applying motor speed function(s) to measured motor speed, such as an adjusted one for regulating canister pressure to achieve a target pressure.

A high flow therapy system for delivering heated and humidified respiratory gas to an airway of a patient, the system including a respiratory gas flow pathway for delivering the respiratory gas to the airway of the patient by way of a non-sealing respiratory interface; wherein flow rate of the pressurized respiratory gas is controlled by a microprocessor.

Provided is a laryngeal mask airway, comprising a laryngeal mask airway main body (10) and a view device (20). The laryngeal mask airway main body (10) comprises a catheter (12), and a sealing base (13) connected to the distal end of the catheter (12), and the view device (20) comprises a control part (22) and a vidicon (23), wherein an image sensor (231) is formed at the distal end of the vidicon (23), and an air guide channel (101) and a view lumen (103) are formed in the laryngeal mask airway main body (10); and a first blind end part (103a) that is closed by a light-transmitting material is formed at the distal end of the view lumen (103), the vidicon (23) is inserted into the view lumen (103) in a pluggable manner, the distal end of the view lumen (103) and the distal end of the vidicon (23) extend into the sealing base (13), and the distal end of the vidicon (23) can be bent and reset. The vidicon (23) is sealed inside the view lumen (103) and does not come into contact with internal tissue of a patient during use, such that the vidicon (23) can be reused in a relatively safe manner; and the distal end of the vidicon (23) can bypass the epiglottis, and the drooping epiglottis can be pushed aside by means of controlling the distal end of the vidicon (23) to be bent upwards so as to obtain a good view.

Apparatus for direct oral delivery of fluid medical gas to a patient, comprising: a conduit, a mouthpiece in fluid communication with the conduit, an exhalant chamber at least partially divided from the conduit, an outlet valve in one-way fluid communication between the conduit and the exhalant chamber, the outlet valve adapted for permitting exhalation of exhalant by the patient into the exhalant chamber and adapted for porting of the exhalant outside of an environment in which the apparatus is adapted for use.

A gas delivery conduit adapted for fluidly connecting to a respiratory gases delivery system in a high flow therapy system, the gas delivery conduit includes a first connector adapted for connecting to the respiratory gases delivery system, a second connector adapted for connecting to a fitting of a patient interface, tubing fluidly connecting the first connector to the second connector where the first connector has a gas inlet adapted to receive the supplied respiratory gas, one of electrical contacts and temperature contacts integrated into the first connector. The gas delivery conduit further can include a sensing conduit integrated into the gas delivery conduit, where the first connector of the gas delivery conduit is adapted to allow the user to couple the first connector with the respiratory gases delivery system in a single motion.

A launcher for placement and introduction of a medical device into a body lumen is provided. In one embodiment, the medical device is a nested cannula which is pre-designed and fabricated for access to a lumen within a patient body. The launcher comprises a stent having a plurality of guidewires, the guidewires extending from the stent to an external access point of the patient. The guidewires are positioned within a guidetube and disposed within a plurality of channels therein. In some embodiments, a bronchial access assembly comprising a mouthpiece and a J-tube for access to the trachea is also provided. In another embodiment, a stent for introducing a nested cannula is provided. The stent is comprised of a shape memory alloy or other material designed to be deployed within a body lumen, and plurality of guidewires affixed to the stent. In another embodiment, a method for introducing a nested cannula into a body lumen is provided.

An embodiment of the disclosure provides a universal sealing apparatus for one or more cannulas. The apparatus includes a first portion, a second portion, and a third portion. The first and second portions are configured to removably adhere directly or indirectly to a nose. The third portion is coupled to the first and second portions. The third portion removably couples to one or more cannulas and places a force upon a base of flared portions of the one or more cannulas when the first and second portions are adhered to the nose. The force maintains a fluid seal of the one or more cannulas within one or more respective nostrils of the nose.

A bite block includes a hollow oral cavity insert part, a plate and a hollow outside part. The hollow oral cavity insert part is in contacts with an oral cavity of a subject at the time of attaching the bite block to the subject. The plate is formed in a flange shape extending from the oral cavity insert part. A hollow outside part includes an exposed portion which is exposed to an outside of the oral cavity at the time of attaching, and communicates with a hole of the oral cavity insert part. In the bite block, the hollow outside part includes at least one through hole with which an external device is attached to the bite block, on the exposed portion.

A respiratory training device providing both inspiratory and expiratory functional evaluation and training, as well as independent regulation of both the inspiratory and expiratory airway resistance levels used during training. The respiratory training device also includes data acquisition, recording, storage, retrieval and display functions for airway pressure monitoring data to provide functional evaluation, physiological monitoring, and diagnostic features. The respiratory training device allows the user to easily develop and follow precise and advanced training protocols, and utilize the respiratory device in both the clinical and home setting.