A therapeutic gas is administered to a patient. A sample gas is drawn from the therapeutic gas supply, and passed through a water-permeable tubular membrane. Concurrently, a section of the water permeable tubular membrane is maintained as a ventilated water permeable tubular membrane, by exposing outer surfaces of the ventilated water permeable tubular membrane to an ambient air flow. The ambient air flow may in some examples be moved over the tubular membrane via forced air such as for example via a fan associated with a housing surrounding the tubular membrane.

An airway assist device (AAD) is provided. The device includes an upper AAD component and a lower AAD component. The upper AAD component includes and upper tooth guide connected to an upper plate having a pair of depending legs. The upper AAD component further includes an upper force receiving plate. The AAD also includes a lower AAD component. The lower AAD component includes a lower tooth guide connected to a lower plate. The lower AAD component further includes a lower force receiving plate. The upper and lower AAD components are connected in a way that allows relative longitudinal movement between the two components between a neutral position and a plurality of extended positions. A ratchet mechanism inhibits movement of the lower plate from any extended position toward the neutral position. The ratchet mechanism may be manually disengaged to allow the lower AAD component to return to the neutral position. An oxygen delivery housing may be connected to the upper plate to distribute oxygen.

In an embodiment, a connector or connector assembly for attaching a nasal cannula with a gas delivery hose includes a sensor port for a sensor probe positioned near an end of a nasal cannula, which can allow the sensor probe to be placed closer to the patient's nostrils than previous connector parts allowed. The connector can be configured to advantageously allow the nasal cannula to rotate relative to the gas delivery hose, thereby allowing a patient or healthcare provider to untangle or otherwise straighten the hose or the cannula. The connector assembly can be configured to automatically align locking protrusions on a first component with locking recesses on a second component, where insertion of the second component within the first component causes the second component to rotate relative to the first component, thereby aligning the locking protrusions with associated locking recesses.

An inhalation mask assembly includes a cup shaped first body and a cup shaped second body. The first body is receivable against a facial area for enclosing a respiratory organ, and includes first inhalation members, and an exhalation valve assembly at a frontal midpoint of the first body between the first inhalation members. The second body includes exhalation members and second inhalation members. The first body is nested in the second body, and the first inhalation members of the first body are coupled gaseously to the respective second inhalation members. The first inhalation members are for administering respirable gas into the first body from the respective second inhalation members, the exhalation valve assembly is for exhausting exhaust gas from the first body into a scavenger chamber formed between the first body and the second body, and the exhalation members are for exhausting the exhaust gas from the scavenger chamber.

There is provided an exhaled breath moisture reduction system including a dryer mechanism and a connector adapted to connect the dryer mechanism proximate to a respiratory output device. There is also provided an exhaled breath sampling assembly including an airway adaptor and a moisture reduction sleeve comprising a material adapted to reduce moisture and a connector adapted to connect said sleeve substantially adjacent to a breath sampling inlet within the adaptor. Also provided, a method of sampling breath which includes attaching an exhaled breath moisture reduction sleeve substantially adjacent to a breath sampling inlet.

Embodiments presented provide for a medical apparatus that allows for administration of a fluid, such as oxygen, to a patient, and to allow a medical professional to quickly and precisely administer such oxygen and/or a gaseous sedative with little waste.

System and methods for providing nitric oxide can include at least one pair of electrodes configured to generate a product gas containing nitric oxide from a flow of a reactant gas, and at least one controller configured to regulate an amount of nitric oxide in the product gas generated by the at least one pair of electrodes using one or more parameters as an input to the controller. One or more sensors are configured to collect information relating to at least one of patient information, the reactant gas, the product gas, and an inspiratory gas into which at least a portion of the product gas flows, the sensors configured to communicate the information to the controller to be used as the one or more parameters. The patient information includes information relating to a methemoglobin (MetHg) measurement collected from a MetHg sensor.

Therapy gas delivery systems that provide run-time-to-empty information to a user of the system and methods for administering therapeutic gas to a patient. The therapeutic gas delivery system may include a gas pressure sensor attachable to a therapeutic gas source that communicates therapeutic gas pressure data to a therapeutic gas delivery system controller, a gas temperature sensor positioned to measure gas temperature in the therapeutic gas source that communicates therapeutic gas temperature data to the therapeutic gas delivery system controller, at least one flow controller that communicates therapeutic gas flow rate data to the therapeutic gas delivery system controller, at least one flow sensor that communicates flow rate data to the therapeutic gas delivery system controller, and at least one display that communicates run-time-to-empty to a user of the therapeutic gas delivery system. The therapeutic gas delivery system controller of the system includes a processor that executes an algorithm to calculate the run-time-to-empty from the data received from the gas pressure sensor, temperature sensor, flow controller and flow sensor, and directs the result to the display.

An anesthetic vaporizer system includes a reservoir containing anesthetic agent, an agent level sensor measuring an agent level of the anesthetic agent in the reservoir, a display, and a controller. The controller is configured to receive agent level measurements from the agent level sensor over a time period, and determine the anesthetic agent is being added to the reservoir from an agent source based on the agent level measurements over the time period. A filling status is determined based on the agent level measurements and a filling status indicator is displayed based on the determined filling status.

A method of forming a stream having a therapeutic concentration of nitric oxide (NO) is disclosed, along with an apparatus and system suitable to accomplish this method.