摘要:
An open system provides breath-synchronized, flow-targeted ventilation to augment respiration by a self-breathing patient. A sensor detects a physical property of a patient's respiratory cycle. A processor monitors the sensor and controls a gas source to deliver oxygen-containing gas through a tube extending into the patient's airway with the flow rate varying over each respiratory cycle in a predetermined non-constant waveform synchronized with the respiratory cycle to augment the patient's spontaneous respiration. Gas is delivered at a flow rate sufficient to significantly mitigate the airway pressure the patient must generate during spontaneous breathing and thereby reduce the patient's work of breathing.
摘要:
A liquefied gas storage/delivery system and method that includes a liquefied gas storage system. The liquefied gas storage system includes a housing containing a storage vessel suited to contain a supply of liquefied gas, such as liquid oxygen (LOX). A rotatable turntable is provided on an exterior surface of the housing. An interface shaped to match the shape of at least a portion of a portable liquid storage/delivery device is provide in or on the turntable. A connector is disposed in the interface that couples to a corresponding connector on the portable liquid storage/delivery device. The two connectors are coupled by placing the portable liquid storage/delivery device in the interface and rotating the turntable.
摘要:
A portable liquid oxygen (LOX) storage/delivery apparatus is provided, including an insulated (LOX) container having an interior, a bottom portion and a sidewall, the sidewall including a first side portion and a second side portion, both extending between the top portion and the bottom portion, and a port system in communication with the interior of the container for charging the container and for withdrawing LOX and gaseous oxygen from the container. The gaseous oxygen is withdrawn from the container through a first outlet and LOX is withdrawn from the container through a second outlet. Gaseous oxygen can be withdrawn from the container through the first outlet and LOX can be withdrawn from the container through the second outlet when the container is positioned in a first orientation with the sidewall vertically oriented, as well as when the container is positioned in a second orientation with the second side portion oriented downwardly and with the first side portion oriented upwardly and overlying the second side portion, and any position in between.
摘要:
An oxygen concentrator comprises a vacuum swing adsorption (VSA) gas separator for producing oxygen rich gas, and includes a reservoir for storing the product gas and a product pump for delivering the product gas from the separator to reservoir. The pump is driven by a vacuum from the gas separator.
摘要:
An oxygen concentrator utilizing a vacuum swing adsorption (VSA) gas separation system comprises a cartridge containing a mass of adsorbent material for producing oxygen, and a drive which activates the gas separation system. The concentrator is defined by a ratio of the mass of the adsorbent material compared to a flow rate of oxygen produced by the oxygen concentrator in a range of 0.020 to 0.214 kg/(L/min).
摘要:
A system and method for storage and delivery of a cryogenic mixed gas is disclosed, the storages apparatus including a compact and lightweight dewar for containing cryogenic temperature mixed gas at supercritical pressure. Different heat exchangers associated with the dewar provide for heat input to the dewar to maintain gas therein in a single phase and provide continued expulsion energy. A backpack receives the dewar and includes means for quick connect of the dewar with an end use outlet, intermediate heat exchangers in the backpack conditioning the mixed gas for end use. No electrical input for fluid circulation is required.
摘要:
A method and apparatus of mixing liquid oxygen and liquid nitrogen to form a liquid mixture in which such streams are passed through a parallel flow heat exchanger in order to form a subcooled liquid oxygen stream and a partly vaporized liquid nitrogen stream both having the same temperature. The partly vaporized liquid nitrogen stream is phase separated in a phase separator to form liquid and vaporized nitrogen phases. The liquid phase stream composed of the liquid nitrogen is mixed with the subcooled liquid oxygen stream, preferably in a mixing tee, in order to form the desired mixture.
摘要:
A device for mixing liquid nitrogen and liquid oxygen to form liquid air. The mixing device consists of a tube for transferring liquid oxygen positioned within a tube for transferring liquid nitrogen. Supply vessels for liquid oxygen and liquid nitrogen are equally pressurized and connected to the appropriate tubes. Liquid oxygen and nitrogen flow from the supply vessels through the respective tubes and are mixed to form liquid air upon exiting the outlets of the tube. The resulting liquid air is transferred to a holding vessel.
摘要:
Disclosed is an apparatus for storing and delivering a liquid cryogen. The apparatus is a dewar having a rotating liquid cryogen intake, a rotating gas supply vent, and a rotating capacitance gauge. Also disclosed is a system and a process employing the system for liquefying a gas to produce a liquid cryogen in the dewar wherein the gas is subcritically cooled and then condensed in the pressure vessel of the dewar.
摘要:
A portable breathing apparatus is arranged to permit utilization within an automotive vehicle by employing a portable compressor having a twelve volt cigarette lighter adapter plug operative through a nebulizer structure to permit admixing of fluid medicant relative to compressed air. The organization is arranged to further optionally include an oxygen tank directing oxygen through the nebulizer into an associated breathing arrangement for an individual.