Supplying therapeutic gas based on inhalation duration. At least some of the example embodiments are methods including: sensing a current inhalation of the patient; providing a flow of therapeutic gas to the patient based on the sensing; and ceasing the flow of therapeutic gas to the patient based on a value indicative of previous inhalation duration.

A ventilation treatment device and a ventilation-control method are provided. During use, when a headband contacts a headrest, a first valve assembly contacts a second valve assembly to open first air holes and second air holes, thereby communicating a first chamber with a second chamber, such that air from an air source into the first chamber enters the second chamber and further enters a respiratory chamber of a patient connecting apparatus for inhalation by a patient; and when the headband is separated from the headrest, the first valve assembly and the second value assembly are separated to close the first air holes and the second air holes, thereby preventing the air in the first chamber and the second chamber from flowing out through the first air holes and the second air holes, respectively.

System for assisting a patient in speaking, comprising at least one ventilation apparatus and a patient interface, the ventilation apparatus comprising at least one controllable respiratory gas source and being designed to identify two or more respiratory phases, at least inspiration and expiration, of the patient, and the patient interface having at least one speaking tube and a respiratory tube and being configured to conduct speaking gas to the patient via the speaking tube and to conduct respiratory gas to and/or from the patient via the respiratory tube. The system is configured to provide speaking gas to the patient at least temporarily in a speaking mode in order to enable speaking.

A supply arrangement (100) and a process supply a medical device (50, 90) with a supply gas mixture. The supply gas mixture includes a carrier gas and an anesthetic and is generated by an anesthetic dispenser (3). A carrier gas mixing unit (9) generates the carrier gas from at least two carrier gas components. A carrier gas switch having a regular outlet and a discharge outlet selectively directs carrier gas components to the carrier gas mixing unit or to a discharge line (35). A gas mixture switch (6), having a regular outlet (41) and a discharge outlet (42) selectively directs the supply gas mixture to the medical device or to the discharge line (35). An anesthetic concentration sensor (5.1, 5.2) measures a concentration of anesthetic in the generated gas mixture. A control unit (2) controls the gas mixture switch based on measured concentration within or outside a predefined range.

Systems and methods are provided for portable and compact nitric oxide (NO) generation that can be embedded into other therapeutic devices or used alone. In some embodiments, an ambulatory NO generation system can be comprised of a controller and disposable cartridge. The cartridge can contain filters and scavengers for preparing the gas used for NO generation and for scrubbing output gases prior to patient inhalation. The system can utilize an oxygen concentrator to increase nitric oxide production and compliment oxygen generator activity as an independent device. The system can also include a high voltage electrode assembly that is easily assembled and installed. Various nitric oxide delivery methods are provided, including the use of a nasal cannula.

The principles and embodiments of the present invention relate to methods and systems for safely providing NO to a recipient for inhalation therapy. There are many potential safety issues that may arise from using a reactor cartridge that converts NO.sub.2 to NO, including exhaustion of consumable reactants of the cartridge reactor. Accordingly, various embodiments of the present invention provide systems and methods of determining the remaining useful life of a NO.sub.2-to-NO reactor cartridge and/or a breakthrough of NO.sub.2, and providing an indication of the remaining useful life and/or breakthrough.

Methods and systems are provided for anesthetic agent leakage diagnostics. In one embodiment, a method for diagnosing leaks in an anesthetic vaporizer includes calculating a leakage rate based on measurements of an anesthetic agent level in a sump of the anesthetic vaporizer, the measurements received from a fluid level sensor at a first time and a second time, and outputting a maintenance alert responsive to the leakage rate exceeding a threshold.

A tank for accumulating oxygen enriched air from an oxygen concentration device is disclosed. The oxygen concentration device includes a canister including a nitrogen-adsorbent material. A compressor is coupled to the canister. The compressor compresses air for the canister to produce oxygen enriched air in a swing adsorption process. The tank includes a closed container for collecting oxygen enriched air produced in the canister. An inlet is coupled to the container. An outlet in the container allows a patient to inhale the collected oxygen enriched air. An adsorbent material within the container adsorbs oxygen enriched air added to the tank from the canister.

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.

An apparatus and methods enhances the energy levels of a person, in particular the relating to guiding a person's breathing to enhance energy and health. The device is a breath guide device having an airway, breathflow guiding equipment, a control unit capable of communicating with a memory unit. The control unit is arranged to control the breathflow guiding equipment in dependence on data held in the memory unit. A mouthpiece suitable for placement at a user's mouth may be included. The breathflow guiding equipment includes an electronically operated valve for regulating the flow of breath through the airway.