Abstract: The CPAP enclosure is for use in treating sleep apnea in a patient. The CPAP enclosure creates a protected space that contains atmospheric gases at an increased pressure. The increased pressure created within the protected space of the CPAP enclosure prevents the narrowing of the patient's breathing airways during sleep. The CPAP enclosure includes a tent, a valve structure, and a CPAP machine. The tent forms the protected space of the CPAP enclosure. The CPAP machine generates a flow of atmospheric gas under pressure that is pumped into the protected space of the CPAP enclosure. The valve structure controls the flow of atmospheric gas under pressure from the CPAP machine into the protected space of the CPAP enclosure. The valve structure controls the pressure of the atmospheric gas contained within the protected space of the CPAP enclosure.

Abstract: A cooling element (100) for use within a cooling device (600) of a closed-circuit respirator (690), includes a plate shaped cooling element housings (110, 120), each with a respective liquid-tight closure (112, 122) filled or to be filled with a coolant (211). The cooling element housings (110, 120) each have a plate outer wall (114, 124) and a plate inner wall (116, 126) arched in the direction of the plate outer wall, which form, together with additional side walls (115, 125), cooling element volumes (118, 128) for the coolant. The plate shape cooling housings can be fastened or are fastened to each other such that the one plate inner wall and another plate inner wall are located opposite each other and are arched away from one another.

Abstract: A non-invasive ventilation system may include at least one outer tube with a proximal lateral end of the outer tube adapted to extend to a side of a nose. The at least one outer tube may also include a throat section. At least one coupler may be located at a distal section of the outer tube for impinging at least one nostril and positioning the at least one outer tube relative to the at least one nostril. At least one jet nozzle may be positioned within the outer tube at the proximal lateral end and in fluid communication with a pressurized gas supply. At least one opening in the distal section may be adapted to be in fluid communication with the nostril. At least one aperture in the at least one outer tube may be in fluid communication with ambient air. The at least one aperture may be in proximity to the at least one jet nozzle.

Abstract: According to some embodiments, an aerosol reduction system is disclosed. The aerosol reduction system comprises an electric air cleaner that includes a fan. The system further comprises a plurality of disposable curtains circumscribing the electric air cleaner that create an airtight seal with the air cleaner. Each of the plurality of disposable curtains defines a window opening. The system further comprises a window disposed on a window mount and the window create an airtight seal with the window opening.

Abstract: A mask is disclosed that has a gas outlet which is quiet and provides for a diffused outlet flow of gases. The outlet is preferably a slot formed between a hollow body and cover over said hollow body. The mask also preferably extends and seals under a user's chin in use.

Abstract: A ventilation gas cooling apparatus is configured in a modular form adapted for selective removable engagement to a ventilator. The apparatus includes a gas inlet port, a gas delivery port, a pressure sensing port, and a thermoelectric cooler. The inlet port is fluidly connectible to a source of therapeutic breathing gas at an external end and is fluidly connectible to an inlet of the ventilator at an internal end. The delivery port is fluidly connectible to a patient circuit at an external end and is fluidly connectable to an outlet of the ventilator at an internal end. The pressure sensing port is fluidly connectible to both a pressure sensing port of the ventilator and to the patient circuit. The apparatus may further include a cooling fluid system operative to circulate either a gas or liquid coolant along at least a portion of a multi-lumen tube integrated into the patient circuit.

Abstract: A vortex tube with an arcuate hot leg. A vortex tube include a vortex chamber couple to a first tube, a cold leg, to carry a cold air stream and a second tube, the hot leg, to cause the separation of hot and cold air. The hot leg bends in an arc to allow a longer and more efficient hot leg in reduced linear space.

Abstract: Methods for cerebral and systemic cooling via a patient's nasopharyngeal cavity are described. In one method, a cooling assembly is inserted into a nasal cavity through a patient's nostril. A substantially dry gas is delivered through a lumen of the catheter onto the surface of the patient's nasal cavity. Evaporative heat loss cools the patient's nasal cavity. If additional cooling is needed, a liquid coolant is delivered through a separated lumen of the catheter. The liquid coolant is nebulized at a plurality of delivery ports on the distal end of the catheter and is delivered onto the surface of the patient's nasal cavity in combination with the dry gas. The dry gas enhances evaporation of the nebulized coolant and additional cooling is provided from the evaporative heat loss of the liquid coolant.

Abstract: A sorbing granular material (20) is provided including a plurality of particles of granular material (5). The particles of granular material (5) are mixed at least partly with magnetizable particles (10), so that in case of magnetization of the magnetizable particles (10), the particles of granular material (5) form a compacted sorbing granular material (20) based on magnetic attracting forces between the magnetizable particles (10). The compaction is reversible. In addition, a process for producing a sorbing granular material (20) is provided.

Abstract: A personal safety system in the form of a refuge chamber with at least one main room and a carbon dioxide absorber (10) provided for absorbing carbon dioxide out of the ambient air of the main room. The carbon dioxide absorber (10) has a body (14) and a basket (12) that can be inserted into the body (14) for receiving loose soda lime. With this, any static charges of previously used soda lime cartridges are avoided and dangers arising therefrom, in potentially explosive areas, are ruled out.

Abstract: A patient interface that provides breathable gas to a person has a face engaging cushion that includes an internal cavity. In the internal cavity fluid is located, and a control means that is capable of communicating with the fluid can incite change to a property or to properties of the fluid.

Abstract: A device for providing a breathing gas, in particular to a device for conditioning a breathing gas for stimulating weight reduction of a breathing creature. The device includes a gas supply mechanism and gas conditioning mechanism. The device provides a breathing creature with a breathing gas which is conditioned by adding particles including a frozen fluid to the breathing gas. When the breathing creature inhales the breathing gas, his body comes into contact with the gas and the particles including the frozen fluid. The breathing gas and the particles will be warmed by the body of the creature, preferably to a temperature at which the frozen fluid starts to melt. The warming of the particles and the breathing gas by the body of the breathing creature requires energy, and therefore stimulates the metabolism of a breathing creature, promoting fat burning and inducing weight reduction.

Abstract: The present invention provides a method and apparatus for controlling a patient's body temperature and in particular for inducing therapeutic hypothermia. Various embodiments of the system are described. The system includes: a source of breathing gas, which may be in the form of a compressed breathing gas mixture; a heat exchanger or other heating and/or cooling device; and a breathing interface, such as a breathing mask or tracheal tube. Optionally, the system may include additional features, such as a mechanical respirator, a nebulizer for introducing medication into the breathing gas, a body temperature probe and a feedback controller. The system can use air or a specialized breathing gas mixture, such as He/O2 or SF/O2 to increase the heat transfer rate. In addition, the system may include an ice particle generator for introducing fine ice particles into the flow of breathing gas to further increase the heat transfer rate.

Abstract: Devices and methods are disclosed herein for preventing or treating ventilator associated pneumonia in a mammalian subject. The device includes an endotracheal tube having an interior surface and an exterior surface; a sealant composition in contact with the exterior surface of the endotracheal tube; and a temperature control element in contact with the endotracheal tube configured to heat or cool the sealant composition to a level required to reversibly convert the sealant composition from a solid sealant composition to a flowable sealant composition.

Abstract: A treatment system includes a delivery device which delivers a combination of a breathing gas and frozen ice or other particles to a patient in order to induce hypothermia. The treatment system also includes a temperature system for measuring the temperature of exhaled gases and a controller which can adjust the duration or rate at which the ice particles are delivered in order to control the patient's core temperature based on the measured exhalation gas temperature.

Abstract: A half facepiece respirator has a shaped support piece supporting and fixing the position of a particle or paper filter insert or outsert with either the support piece or the particle filter incorporating a face sealing component. Placed within the shaped support piece, a grille may be placed in the lower section of the shaped support piece. Additionally the half facepiece includes a head harness having a release mechanism.

Abstract: The invention relates to a respiratory circuit appliance with a respiratory line, a CO2 absorber (6) in the respiratory line, and a cooling device for cooling the respiratory gas after it exits the CO2 absorber. Provision is made that the cooling device cools a heating pump with a compressor (33) for compressing/condensing a cooling medium, a condenser (30), which receives the condensed cooling medium, and in so doing releases heat to the surroundings, and with a heat exchanger body (8) which receives the cooled cooling medium and is in heat-conducting contact with a section of the respiratory line.

Abstract: A respirator with active dehumidification of the breathing gas has a breathing gas cooler in the form of a Peltier element (16), whose warm side is arranged in the inspiration line 7 and whose cold side (18) is arranged in the expiration line 12.

Abstract: A ventilation gas cooling apparatus or unit which, in an exemplary embodiment, is configured in a modular form adapted for selective removable engagement to a ventilator. The cooling unit includes a gas inlet port, a gas delivery port, a pressure sensing port, and a thermoelectric cooler. The inlet port is fluidly connectible to a source of therapeutic breathing gas at an external end and is fluidly connectible to an inlet of the ventilator at an internal end. The delivery port is fluidly connectible to a patient circuit at an external end and is fluidly connectable to an outlet of the ventilator at an internal end. The pressure sensing port is fluidly connectible to both a pressure sensing port of the ventilator and to the patient circuit. The cooling unit may further include a cooling fluid system which is operative to circulate either a gas coolant or a liquid coolant along at least a portion of a multi-lumen tube which is integrated into the patient circuit.

Abstract: A wearable breathing apparatus includes a thermal capacitor that a user inhales and exhales through. Inhaled air is cooled as it passes through the thermal capacitor, and exhaled air cools the material of the thermal capacitor for the next breathing cycle. The breathing apparatus may be used by a firefighter, for example, as a lightweight apparatus to enable the firefighter to safely breathe dangerously heated air, for example while in a fire shelter, that may otherwise cause injury to the user. The breathing apparatus advantageously does not require external power for cooling. The thermal capacitor may also be used as a part of a rebreather that uses a scrubber that removes carbon dioxide from exhaled air, for rebreathing. Further, the thermal capacitor may be used for other purposes, such as in recirculation of building air.

Abstract: A respiratory mask for controlling a body temperature of a patient by using a respiratory gas includes a controller for generating the respiratory gas, a gas transfer tube for receiving the respiratory gas and transferring the respiratory gas to a respiratory unit, a heat transfer metallic body configured to connect to the gas transfer tube and for cooling or heating the respiratory gas passing through the gas transfer tube, a thermoelectric element for performing an exothermic reaction or an endothermic reaction to heat or cool the heat transfer metallic body, a power supply unit configured to be located to be parallel to a bottom end of the gas transfer tube and for supplying power to the thermoelectric element via the controller, and a respiratory unit configured to connect to the gas transfer tube and for supplying the respiratory gas passing through the gas transfer tube to a patient.

Abstract: A method and apparatus provides a continuous source of medical grade air. A substantially tubular and rigid housing includes a first end, at least one aperture extending through the housing and positioned a predetermined distance from the first end; and a second end, opposite the first end. A valve extends from the first end of the housing for dispensing medical grade air to a patient. A medical grade air compressor provides medical grade air for output by the valve, the medical grade air compressor being positioned within the housing on a side of the at least one aperture opposite the valve. An air flow generator is positioned between the second end of the housing and the medical grade air compressor, the air flow generator draws air into the housing through the at least one aperture. The air passes over and around the medical grade air compressor to reduce a temperature of the medical grade air compressor and to the medical grade air compressor for generating medical grade air.

Abstract: A portable, low maintenance apparatus is provided for cooling down athletes following strenuous exercise. The apparatus has a repository that holds ice, and a fan configured to blow air through the ice and out of a face adapter part. The face adapter is shaped to provide a cool, breathable stream of air to a user who presses his face up against the adapter.

Abstract: A gas mask and breathing equipment is provided with a circuit for breathing gas and with a heat exchanger (7) cooled by an evaporating agent. The evaporating agent is introduced from an evaporating agent container (8) into the heat exchanger (7) via at least one group of spraying elements (9) and a gas delivery means (11) allows a gas volume flow to flow through the heat exchanger (7).

Abstract: This invention relates in general to methods and devices for displacing body convection and thereby reducing exposure to allergens and other airborne fine particles within a personal breathing zone during situations of or corresponding to sleep thereby reducing or removing symptoms of asthma and allergic rhinitis while improving quality of sleep and in particular to methods and devices that utilize Temperature controlled Laminar Airflow (abbreviated TLA from herein and onwards). Also, business methods involving such methods and devices are disclosed.

Abstract: The present invention of one embodiment includes a combined microclimate, thermal management, life-support system for care of patient and system for measurement of vital signs. The system of one embodiment, provides active external heating and simultaneously provides active internal heating.

Abstract: A laryngeal mask is provided with an outer tube and a connector, having a base end in which is formed a first connecting portion capable of being connected to an artificial respirator and a leading end in which is formed a ventilation opening, the outer tube and the connector having a communication passage formed therein that communicates between the first connecting portion and the ventilation opening, a ring-shaped cuff capable of tightly adhering to a tracheal opening of a patient trachea as a result of inflating in a state where the ring-shaped cuff is inserted to a predetermined insertion position, and hyoid bone-contacting portions and protruding laterally from the outer tube so as to contact from above a site in a pharyngeal portion of the patient corresponding to a hyoid bone of the patient in a state where the ring-shaped cuff is inserted to the insertion position.

Abstract: A pressurized gas cylinder holder for a respirator includes a holding part (15) and at least one tightening strap for fastening a pressurized gas cylinder to a holding part (15). Pressurized gas cylinders with different external diameters are able to be fastened to the pressurized gas cylinder holder with an identical longitudinal axis. The holding part (15) has at least two support elements (19) as separate components in addition to the rest of the holding part (15) for supporting the pressurized gas cylinder and at least four fixing devices (20) formed on the holding part (15) for the at least two support elements (19). The support elements (19) may be fastened to different fixing devices (20) for adaptation to pressurized gas cylinders (9) with a different external diameter.

Abstract: The present invention of one embodiment includes a combined microclimate, thermal management, life-support system for care of patient and system for measurement of vital signs. The system of one embodiment, provides active external heating and simultaneously provides active internal heating.

Abstract: This invention relates to a breathing unit having an electric motor for driving a compressor, compressed air being conducted through a first heat exchanger cooled by cooling air of the compressor, and the compressed air being conducted through a second heat exchanger being cooled by cooling air of the motor.

Abstract: Described herein are various embodiments of an oxygen concentrator system. In some embodiments, an oxygen concentrator system includes one or more components that improve dissipation of heat formed during operation of the oxygen concentrator system.

Abstract: The present inventions provide respiratory therapy apparatus that introduce water into the pressurized air delivered to a user during various positive airway pressure therapies and corresponding methods. The respiratory therapy apparatus may be configured to administer one or more positive airway pressure therapies, including: continuous positive airway pressure therapy (CPAP), bi-level positive airway pressure therapy (BPAP), auto positive airway pressure therapy (autoPAP), proportional positive airway pressure therapy (PPAP), and/or other positive airway pressure therapies. The respiratory therapy apparatus may include a user interface that defines an interface passage to communicate pressurized air to the user for inhalation and a humidifier that introduces water into the pressurized air generally at the interface passage. Methods according to the present inventions may include introducing water into the interface passage at one or more humidifier ports disposed about the interface passage.

Abstract: A device to enable user inhalation and exhalation of air. The air delivered by the device may or may not be aromatically conditioned with user-selected aroma. Further, the air may or may not be thermally conditioned by the device to deliver air that is chilled, warmed, or ambient. The device can include a mask subassembly; an aroma subassembly; a neck portion; a base subassembly with thermal mass; and a soft, insulated cover assembly. Methods of using the device i) teach breathing techniques for relaxation using sensory feedback from the device; ii) educate, establish and heighten awareness of positive sleep routines that are considered important in healthy sleep hygiene; iii) aid in identifying behaviors that are not conducive to good sleep hygiene; iv) assist the user in identifying dysfunctional rumination and belief systems about sleep and relaxation; and v) educate the user about breathing techniques and relaxation.

Abstract: Methods and devices for creating a supersaturated liquid solution having dissolved gas with hyperbaric partial pressures and aerosolizing the supersaturated solution via a nebulizer. High partial pressures of the dissolved gas may be maintained before, during, and after the aerosolization process. Thus, the hyperbaric partial pressures may be retained in the aerosol particles even after the particles are exposed to ambient barometric pressure. The aerosolized particles may be inhaled to improve oxygenation and blood flow to the lung or alternatively, the aerosolized particles can be topically applied to accelerate wound healing. Nebulizers may produce aerosol particles in some embodiments have mass median aerodynamic diameters of between about 0.25 and about 5 microns, thereby allowing sufficient deposition in the lung parenchyma, proximal to alveoli.

Abstract: A method and apparatus provides a continuous source of medical grade air. A substantially tubular and rigid housing includes a first end, at least one aperture extending through the housing and positioned a predetermined distance from the first end; and a second end, opposite the first end. A valve extends from the first end of the housing for dispensing medical grade air to a patient. A medical grade air compressor provides medical grade air for output by the valve, the medical grade air compressor being positioned within the housing on a side of the at least one aperture opposite the valve. An air flow generator is positioned between the second end of the housing and the medical grade air compressor, the air flow generator draws air into the housing through the at least one aperture. The air passes over and around the medical grade air compressor to reduce a temperature of the medical grade air compressor and to the medical grade air compressor for generating medical grade air.

Abstract: Portable personal respiratory protection devices include a self-contained head gear member with a chin collar that has a front segment that defines a mouth portion and attaches to a back segment that resides over ears of a user and extends about a lower back segment of a head of the user. The head gear includes a visually transmissive face mask extending upwardly from the front segment of the chin collar that, in position, sealably engages a face of the user. The head gear has an open upper portion residing between an outer upper perimeter of the face mask and the back segment of the chin collar that, when worn, is adapted to expose a top and upper rear portion of a head of the user to environmental conditions.

Abstract: Closed system breathable gas regeneration systems comprising temperature swing adsorption (“TSA”) using metabolic regeneration, such systems being useful for EVA in extraterrestrial environments having hostile atmospheres.

Abstract: The present invention provides a method and apparatus for controlling a patient's body temperature and in particular for inducing therapeutic hypothermia. Various embodiments of the system are described. The system includes: a source of breathing gas, which may be in the form of a compressed breathing gas mixture; a heat exchanger or other heating and/or cooling device; and a breathing interface, such as a breathing mask or tracheal tube. Optionally, the system may include additional features, such as a mechanical respirator, a nebulizer for introducing medication into the breathing gas, a body temperature probe and a feedback controller. The system can use air or a specialized breathing gas mixture, such as He/O.sub.2 or SF/O.sub.2 to increase the heat transfer rate. In addition, the system may include an ice particle generator for introducing fine ice particles into the flow of breathing gas to further increase the heat transfer rate.

Abstract: This invention relates to a breathing air unit comprising an electric motor for driving a compressor. Compressed air is conducted through a first heat exchanger cooled by cooling air of the compressor, and the compressed air is conducted through a second heat exchanger being cooled by cooling air of the motor.

Abstract: The present disclosure provides, among other things, a system for providing therapeutic cooling or hypothermia to localized areas of the body such as the brain. A source of compressed gas such as a medical-use oxygen canister is connected via a delivery tube to a mask fitted to a patient. The gas undergoes adiabatic cooling as it enters the delivery tube, and is provide to the patient in such cooled state. The system may be provided as a portable or ambulatory device or kit, with the delivery tube or other part easily disconnected from one compressed gas source and connected to another, for continued therapy even during transportation.

Abstract: The cooling module (2) is provided in particular for the internal cooling of a medical device (20) and is constructed as an assembled unit, with a coolant conveyed in a primary-side coolant circuit, with an air-water heat exchanger (8), with a ventilator (6) for generating a secondary-side airstream for cooling using the air-water heat exchanger (8), and with a controller (18A, 18B) for controlling the operation of the cooling module (2), wherein at least a major part of the controller is integrated in the ventilator (6) as a partial control unit (18A). The partitioning of the controller achieves an efficient use of space within the cooling module (2) in such a way that an optimal use of space is obtained in a restricted assembly space for the cooling module (2), and the air-water heat exchanger (8) can be made comparatively large.

Abstract: The present invention provides a method and apparatus for controlling a patient's body temperature and in particular for inducing therapeutic hypothermia. Various embodiments of the system are described. The system includes: a source of breathing gas, which may be in the form of a compressed breathing gas mixture; a heat exchanger or other heating and/or cooling device; and a breathing interface, such as a breathing mask or tracheal tube. Optionally, the system may include additional features, such as a mechanical respirator, a nebulizer for introducing medication into the breathing gas, a body temperature probe and a feedback controller. The system can use air or a specialized breathing gas mixture, such as He/O2 or SF/O2 to increase the heat transfer rate. In addition, the system may include an ice particle generator for introducing fine ice particles into the flow of breathing gas to further increase the heat transfer rate.

Abstract: An apparatus for providing pressure into which a patient must exhale is provided. The canister has a canister axis and is disposed to hold liquid. The canister also has indicia of pressure on the canister. The apparatus also includes a substantially rigid lid disposed to substantially cover a mouth of the canister and having a first inlet through the lid. The apparatus also includes an adapter in the first inlet. The apparatus also includes a conduit being retained by the adapter such that the conduit is substantially immovable relative to the canister axis.

Abstract: The present invention provides novel condensation aerosols for the treatment of disease and/or intermittent or acute conditions. These condensation aerosols have little or no pyrolysis degradation products and are characterized by having an MMAD of between 1-3 microns. These aerosols are made by rapidly heating a substrate coated with a thin film of drug having a thickness of between 0.05 and 20 ?m, while passing a gas over the film, to form particles of a desirable particle size for inhalation. Kits comprising a drug and a device for producing a condensation aerosol are also provided. The device contained in the kit typically, has an element for heating the drug which is coated as a film on the substrate and contains a therapeutically effective dose of a drug when the drug is administered in aerosol form, and an element allowing the vapor to cool to form an aerosol. Also disclosed, are methods for using these aerosols and kits.

Abstract: A shoulder mounted hood cooling assembly includes a support, a blower carried by the support, and vents in fluid communication with the blower. The support when worn by a user positions at least a portion of the support adjacent the user's shoulder's and the vents are positioned to direct air exhausted from the blower to a neck or to a head or both the neck and the head of the user.

Abstract: An adjustable airway pressure system is provided. The system may include a cap and a canister. The cap may include a substantially hollow conduit having indicia indicative of a plurality of airway pressure values and adapted to receive and output exhaled gas. The conduit may have screw threads on an exterior surface of the conduit. The cap may also include an adjust collar circumscribing the conduit and having an interior surface with a second plurality of screw threads. The second plurality of screw threads may couple and be complementary to the first plurality of screw threads such that a rotation of the adjust collar causes the conduit to move in a substantially vertical direction. The conduit may be adapted to be adjusted to heights along a continuum. The canister may contain liquid and receive the conduit such that the received exhaled gas is output from the conduit into the liquid.

Abstract: A breathing apparatus, including a mask and a neck component. The mask is adapted to substantially surround at least the mouth or nostrils of a user. The neck component is attached to said mask, and adapted to substantially surround the back of the neck of said user. The neck component includes a flow generator to receive unfiltered air from a surrounding environment, filter said unfiltered air, and, provide filtered air to said mask. The breathing apparatus has a ‘low profile’ appearance and is adapted to sit comfortably about the neck of the user.

Abstract: An apparatus comprising a scrubber bed; at least one heat sink operatively connected to the scrubber bed; at least one screen connected to the scrubber bed; and a scrubber tube connected to the scrubber bed. Also, a method of using a multiple mission re-breather apparatus, the method comprising attaching the multiple mission re-breather apparatus; using the multiple mission re-breather apparatus in a dry environment; and using the multiple mission re-breather apparatus in a wet environment. Further, a method of controlling a multiple mission re-breather apparatus, the method comprising activating an electronics package of the multiple mission re-breather apparatus, the electronics package comprising software instructions for adjusting operational parameters of the multiple mission re-breather apparatus in response to a change in environmental pressure; and using the multiple mission re-breather apparatus.

Abstract: A Cool Air Breathing Apparatus. The apparatus provides a low-cost, comfortably-sized, convenient source of cool breathing air to a use. The apparatus id attachable to a standard-sized water bottle container, such as is used for bicycles and exercising in general. The user is able to simply fill the water bottle container with a cooling material, and then breathe through a mouthpiece in order to receive cooling air. The cooling material could be cold liquid, ice cubes or chips, or even a solid frozen block. There is also a folding mouthpiece so that the user can seal the container when it is not in use.

Abstract: The present invention is directed to a much safer and less expensive way of providing portable oxygen from a gas concentrator for patients who do not want to be tied to a stationary machine or restricted by present oxygen technology. The present invention involves a home liquid oxygen ambulatory system for supplying a portable supply of oxygen, where a portion of the gaseous oxygen output obtained from an oxygen concentrator is condensed into liquid oxygen. The system includes an oxygen concentrator which separates oxygen gas from the ambient air, a condenser in communication with the oxygen concentrator for receiving and liquefying the oxygen gas flow, a cryocooler associated with the condenser, and a first storage dewar in fluid communication with the condenser and adapted to store the oxygen liquefied by the condenser, the first storage dewar including means for transferring liquid oxygen from the first dewar to a second dewar for storing a quantity of oxygen suitable for moveable oxygen treatment.