64 results about "Portable oxygen concentrator" patented technology

A portable oxygen concentrator includes a pressure swing absorption system defined by a relatively rigid housing adapted to generate a flow of oxygen enriched gas and a battery adapted to provide power to the pressure swing absorption system. The oxygen concentrator has a total weight of less than about 10 lbs, has a maximum flow of 100% O₂ equivalent gas of about 0.9 lpm, has a total volume less than about 800 in³, and gas a battery life of at least about 8 hours. The present invention also using a liquefaction or transfill system in combination with such an oxygen concentrator.

A portable oxygen concentrator system weighing 4-20 pounds that is adapted to be readily transported by a user and deliver oxygen to the user includes a rechargeable energy source; a concentrator powered by said energy source and adapted to convert ambient air into concentrated oxygen gas for the user; an inspiration sensor that senses respiratory activity of the user, and produces a signal in response thereto; and a control unit that receives the signal in response to sensed respiratory activity, determines a breath rate based in part on the received signal in response to sensed respiratory activity and controls the portable oxygen concentrator system to deliver oxygen flow sufficient to meet oxygen demand of the user based at least in part on the determined breath rate.

A portable oxygen concentrator designed for medical use with a novel housing and internal component design that reduces noise and vibration while increasing durability. The improved design of the portable oxygen concentrator further facilitates easy maintenance and repair over the life of the equipment.

A portable oxygen concentrator includes a reservoir adapted to store oxygen-enriched gas, a delivery valve adapted to communicate with the reservoir, a pressure sensor adapted to measure a reservoir pressure within the reservoir and to measure a pressure drop across the delivery valve, and an input device adapted to receive a pulse does setting. A controller coupled to the pressure sensor and monitors the reservoir pressure and the pressure drop across the delivery valve. The controller is also coupled to the delivery valve to selectively open the delivery valve for pulse durations based on the pulse dose setting to deliver pulses of gas from the reservoir to a user. The controller further adjusts the pulse durations based at least partially upon the reservoir pressure and the pressure drop across the delivery valve.

A compressor suitable for use in a portable oxygen concentrator. In one exemplary embodiment, the compressor includes a crankshaft rotatable about a central axis and a plurality of diaphragm assemblies spaced apart around the central axis generally within a plane. The diaphragm assemblies include diaphragms movably mounted to respective housings to at least partially define chambers. A plurality of rods extend between respective diaphragms and the crankshaft. The rods are coupled to the crankshaft such that the rods are offset axially from one another along the central axis and are coupled to the diaphragms for cyclically increasing and decreasing pressure within the chambers as the crankshaft rotates about the central axis.

A portable oxygen concentrator designed for medical use with a novel housing and internal component design that reduces noise and vibration while increasing durability. The improved design of the portable oxygen concentrator further facilitates easy maintenance and repair over the life of the equipment.

A sound enclosure for a pressure swing adsorption apparatus producing an oxygen concentrated gas having two sections to enclose the apparatus, the apparatus nested in the enclosure and the enclosure having an inlet for allowing ambient air into the enclosure and an outlet for enabling waste gases from the apparatus to exit the enclosure, and causing the ambient air and waste gases substantially to change direction within the enclosure before entering or exiting the apparatus. The sound enclosure further includes a flexible seal for isolating from each other the interior spaces of the two sections when a pressure swing adsorption apparatus is enclosed by the enclosure. Also disclosed is a compact and highly portable combination pressure swing adsorption apparatus and product gas conservation device for medical use, to produce efficiently a gas with a high concentration of oxygen and to deliver the oxygen concentrated gas to a user at selectable times and in selectable doses.

A portable oxygen concentrator designed for medical use with a novel housing and internal component design that reduces noise and vibration while increasing durability. The improved design of the portable oxygen concentrator further facilitates easy maintenance and repair over the life of the equipment.

Described herein are various embodiments of an oxygen concentrator system that includes a home oxygen concentrator system couplable to a portable oxygen concentrator system.

A portable oxygen concentrator includes a pair of sieve beds, a compressor for delivering air to the sieve beds, a reservoir receiving oxygen-enriched gas from the sieve beds, and an air manifold attached to the first ends of the sieve beds. A set of valves operate under the control of a controller for selectively opening and closing the valves to alternately charge and purge the sieve beds to deliver oxygen-enriched gas into the reservoir. In addition, an exhaust passage communicates with the plurality of sieve beds to deliver a flow of nitrogen evacuated from the sieve beds such that the flow of the nitrogen is directed at or across the controller to cool the controller.

An exhaust conduit and adapter apparatus for mounting to a pair of exhaust outlets mounted oppositely on the base of a portable oxygen concentrator includes an opposed facing pair of substantially u-shaped hollow conduits wherein each conduit has an inlet end and an outlet end. The inlet ends are separated by a distance equal to a separation distance between the pair of exhaust outlets. The outlet ends are mounted to each other in fluid communication with a junction having a single outlet. The inlet ends are adapted for mounting to the pair of exhaust outlets so that, when so mounted, hot exhaust from the oxygen concentrator flows through each conduit and out through the junction and the single outlet of the junction. An outflow conduit is mountable to the single outlet of the junction for outflow of the hot exhaust from the single outlet to a remote location, remote from a patient using the oxygen concentrator.

The invention is an oxygen system, including a home care system, for patients who require supplemental oxygen. Built around an intelligent portable oxygen concentrator, the system incorporates a variety of patient monitoring and reporting function enabled by the processing and communications channels built into the concentrator.

A portable oxygen concentrator is disclosed. An output of a high pressure compressor is fluidly coupled to an adsorbent device that increases the concentration of oxygen gas for storage in a high pressure accumulator. The adsorbent device is purged of the collected nitrogen via a valve fluidly coupled to the outlet of the high pressure compressor and the inlet of the adsorbent device. The outlet of the adsorbent device is fluidly coupled to the high pressure accumulator through a first valve. Additionally, a re-circulation loop fluidly couples the outlet of the adsorbent device to a valved inlet of the high pressure compressor.

A portable oxygen concentrator designed for medical use where the usable life of the sieve beds, adsorbers, is monitored and communicated to the user or service provider through a user interface or a transmitted signal. The concentrator is designed so that the beds are easily replaced by the user or a field technician. Preferably PSA cycle operating parameters appropriate to the replaced beds can be easily reset if needed by the user or service provider.