Ambulatory oxygen concentrator
a technology of oxygen concentrator and oxygen concentrator, which is applied in the direction of respirator, separation process, breathing protection, etc., can solve the problems of consuming relatively large amounts of electricity, and unable to meet the needs of patients
Inactive Publication Date: 2011-08-18
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The wearable oxygen concentrator effectively produces a high concentration of oxygen, reducing waste and energy consumption, while being compact and portable, thus enhancing ambulatory oxygen therapy for patients by providing a reliable and efficient oxygen supply.
Problems solved by technology
Home oxygen concentrators, however, do have drawbacks.
They consume relatively large amounts of electricity; are relatively large and heavy; emit excessive heat and are relatively noisy.
Both of these options have significant drawbacks.
A major drawback of the cylinder option is that small cylinders only provide oxygen for a short duration.
Moreover, these cylinders are maintained at a high pressure, and thus their use is restricted due to safety considerations.
Another drawback of the cylinders is the refill requirement after depletion of the contents of the cylinder.
Filling of cylinders with oxygen in the home is potentially dangerous due to the physics involved with compressing gas.
Another detriment to cylinder usage is fire hazards associated with storage of large volumes of oxygen in the home environment.
Convenience and safety issues are not the only drawbacks associated with the use of cylinders.
Another drawback is the cost associated with cylinders.
Cylinders require special care, and specialized materials are required for high pressure oxygen compatibility, which in turn drives up the cost of cylinder-based systems.
The liquid oxygen storage system also has drawbacks.
The primary drawback is the requirement of a base reservoir which necessitates refilling once a week or more from an outside source.
However, there is substantial waste, as a certain amount of oxygen is lost during the transfer to the portable containers and from evaporation.
Up to twenty percent of the contents of the base cylinder is lost in the course of two weeks because of losses in transfers and normal evaporation.
When the patient is out in public, such stations are not readily available.
Such a requirement detracts from the ambulatory usefulness of the systems.
Thus, ambulatory equipment, or personal oxygen systems (POS), are to be inconspicuous to the public as well as unrestricting to the patient.
Cylinders and other liquid oxygen systems tend to be bulky, which interferes with normal daily activities.
Similarly, cylinders and liquid oxygen systems are difficult to conceal from public view.
Method used
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Embodiment Construction
[0035]The current invention relates to separation of gases using vacuum swing adsorption. Specifically, disclosed is an oxygen concentrator for a patient who requires a source of oxygen. The present invention is further explained with reference to the drawn figures in which like structures are referred to by like numerals throughout the several views.
Overview—Oxygen Concentrator 100 (FIGS. 1-4)
[0036]FIG. 1 is a front view showing patient P with oxygen concentrator 100 and oxygen delivery tube 102. Oxygen concentrator 100 is a small unit which utilizes vacuum swing adsorption to separate oxygen from the ambient air around patient P. Oxygen concentrator 100 is compact and light so as not to interfere with the ambulatory movement of patient P, and can produce a product stream of gas containing a range of eighty-five to ninety-five percent oxygen.
[0037]Oxygen delivery tube 102 is a polymer tube or similar oxidation resistant structure, which extends from oxygen concentrator 100 to the n...
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An oxygen concentrator provides ambulatory oxygen utilizing a vacuum swing adsorption (VSA) oxygen separator powered by a power pack. The separator has a plurality of nitrogen-selective adsorbent beds, each operating in VSA cycles including feed, evacuation and repressurization phases. The concentrator also contains a delivery system for receiving oxygen produced by the VSA separator.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority as a continuation application under 35 U.S.C. §120 of earlier filed application Ser. No. 11 / 054,341 entitled “METHOD OF PROVIDING AMBULATORY OXYGEN”, Theodore W. Jagger et al., which is hereby incorporated by reference.[0002]Reference is hereby made to the following applications and patents which claim the same priority date of Feb. 9, 2005, with the present application: application Ser. No. 11 / 054,622 entitled “AMBULATORY OXYGEN CONCENTRATOR CONTAINING A POWER PACK”, Theodore W. Jagger et al. (now Abandoned); U.S. Pat. No. 7,604,005 entitled “ADSORBENT CARTRIDGE FOR OXYGEN CONCENTRATOR”, Theodore W. Jagger et al.; application Ser. No. 11 / 054,340 entitled “AMBULATORY OXYGEN CONCENTRATOR CONTAINING A THREE PHASE VACUUM SEPARATION SYSTEM”, Theodore W. Jagger et al.; U.S. Pat. No. 7,121,276 entitled “PERSONAL OXYGEN CONCENTRATOR”, Theodore W. Jagger et al.; U.S. Pat. No. 7,431,032 entitled “LOW POWER AMBULATOR...
Claims
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IPC IPC(8): A61M16/00
CPCA61M16/0666A61M16/10A61M16/101B01D53/0476B01D2259/455A62B19/00A61M16/107A61M2202/0208A61M2202/03A61M2202/0007
InventorJAGGER, THEODORE W.VAN BRUNT, NICHOLAS P.KIVISTO, JOHN A.LONNES, PERRY B.
OwnerVBOX