A fluid delivery system provides fluid, such as supplement oxygen, to a patient in response to inhalation. The fluid delivery system includes a valve assembly that is triggered by sensing onset of inspiration by measuring a change in temperature of air flow in a nasal or oral cannula, mask or helmet.

The breathing mask with nasal cannula includes a breathing mask having a frontal air inlet port that communicates with an air inlet in a removable mask retainer. The air inlet of the mask retainer is adapted to receive ambient air provided by a non-invasive ventilation (NIV) device. In addition, the mask includes an oxygen pass-through connector tube that is sealed in place in the front of the mask. A nasal cannula is connected to the interior portion of the connector tube and adhesively secured to the patient's nose. The mask and retainer are then secured over the patient's nose and mouth, and an oxygen supply tube is connected to the external end of the pass-through tube of the mask. Airflow is adjusted from the NIV and to oxygen flow is adjusted to the cannula to provide the patient with the required air and oxygen flow for proper blood saturation.

A facial skin indentation preventer has a central base core surrounded by an entrapment flap and a securing flap. The core and flaps have two layers: a soft moleskin or similar skin-contact layer and a second more rigid layer. A rigid cushion is attached to the central base core and a cannula or similar item can be placed thereon. The flaps are then folded inwards, over the rigid cushion, creating a cannula pocket above the rigid cushion and entrapping and holding the cannula therein. An entrapment hinge and securing hinge ensure the folds remain rounded and soft. A flap attachment is used to lock the securing flap in place and ensure the cannula stays within the cannula pocket.

A breathing assistance apparatus is configured with features that improve serviceability of the apparatus. The apparatus can include animations to provide instruction regarding correcting easily-identified fault conditions and to provide instruction regarding routine maintenance routines. The apparatus also can be configured with top level control menus that are obscured in a manner to limit manipulation of the top level control elements by unauthorized users.

There is provided an apparatus for delivering a flow of gas having a controller, a housing defining a gasflow passage, a motor with an impeller to deliver gas through the gasflow passage, and a flexible printed circuit electrically connected to the motor for electrically connecting the motor to the controller. There is also provided an apparatus for delivering a flow of gas having a housing defining a gasflow passage. The gas flowing through the gasflow passage is a high concentration oxygen gas. The apparatus has a motor with windings and an impeller to deliver gas through the gasflow passage, and an elastomeric shield to pneumatically isolate the windings from the gasflow passage.

A nasal cannula including a manifold having a delivery channel and a collection channel fluidly connected to a delivery nasal prong for delivering a gas to be inhaled from a patient's nose and to a collection prong for collecting gas exhaled from the patient's nose. The prongs are composed of a resilient material having sufficient memory that allows the prongs to be resiliently spread apart to be inserted into the respective nares of the patient's nose and when released, gently grasp the columella of the patient's nose to secure the cannula in position. The prongs are oriented leftwardly or rightwardly of the channels so that the right or left portions of the patient's face remain unobscured during surgery.

A nasal adaptor includes: an oral expiration guiding portion which has an opposing portion that is to be opposed to the mouth of a living body, and in which a mouth-side guide path that guides expiration that is expired from the mouth to the opposing portion is formed; and an attaching portion which is placed above the oral expiration guiding portion with respect to the living body, and to which a holding member that holds a sensor for measuring the expiration guided by the oral expiration guiding portion is attached. The oral expiration guiding portion is integrally connected to the attaching portion, and has positioning changing portions that change the distances between connecting portions connected to the attaching portion, and the opposing portion, thereby changing the positioning of the opposing portion.

An air delivery conduit (620) includes first (621) and second (622) conduit portions that cooperate to form the conduit, each conduit portion including an inner layer of a film laminate (650) that forms an interior surface of the conduit and an outer layer of a textile (655) that forms an exterior surface of the conduit.

Provided is a respiratory rate measurement device (4), the respiratory rate measurement device (4) including a detection unit (6) that detects an in-tube pressure and/or an in-tube gas flow rate in a tube (2) supplying concentrated oxygen gas to a patient from a pressure swing adsorption oxygen concentration device (1) connected to the patient and concentrating oxygen in the air by periodically repeating pressurization and depressurization, and outputs pressure data and/or gas flow rate data, an arithmetic operation unit (722) that extracts patient respiratory information data, based on the pressure data and/or the gas flow rate data, and an estimation unit (723) that estimates a respiratory rate per predetermined time, based on the patient respiratory information data, wherein the estimation unit (723) estimates the respiratory rate using, as a respiratory interval, a time Δt in which the autocorrelation coefficient takes a peak.

Apparatus to permit a delivery of a flow of breathable gas to a patient's airways. In one version, a coupler extension may include a seat portion to permit use of a mask with a nasal cannula. In some versions, the coupler extension is configured to conduct the flow of gas to prongs of a nasal cannula. The seat portion can receive and seal with a cushion of a respiratory mask and may have a sealing bevel to promote sealing between the cushion of the respiratory mask and a facial contact surface of a user. In some versions, a conduit adapted to communicate a flow of gas may comprise a slit valve formed by a portion of the wall material of the conduit. In some versions, a nasal interface may include naris pillows to seal with and conduct a flow of breathable gas into a nares of a user. Each naris pillow may include a nasal projection to conduct a further flow of gas. The nasal projection may extend within the naris beyond the seal of the naris pillow.