Gas Concentrator with Removable Cartridge Adsorbent Beds

A portable oxygen concentrator, comprising:

• a platform, comprising:
• a housing,
• a controller,
• a user interface,
• at least one compressor, air control valve, and air filter,
• an oxygen delivery apparatus,
• at least one adsorber receptacle comprising at least one gas connector port and at least one adsorber retention element;
• and
• at least two separable user replaceable adsorbers comprising:
• an adsorber having a top end and a bottom end, the adsorber configured to contain a nitrogen selective adsorbent material, wherein a flow axis of gas through the column is between the top and bottom ends,
• at least one retention element on the adsorber configured to mate directly with an adsorber receptacle retention element and,
• a first and a second disconnectable pressure sealed gas connector disposed on the top and bottom ends of the column respectively, wherein the gas connectors are in fluid communication with the adsorbent and extend at least one of in parallel or perpendicularly to the flow axis in substantially the same direction and the central axes of the gas connectors are substantially parallel to each other,
• wherein;
• the adsorbers are configured to mate with the platform to form a complete oxygen concentrator;
• the retention mechanism is accessible on the exterior of the platform, and;
• at least one of the adsorber or the adsorber receptacle retention mechanisms are hand operable;
• and,
• At least two adsorbers are attached together and have a common retention mechanism;
• wherein;
• the concentrator weighs less than 10 pounds, and has an output gas flow of 5 liters per minute or less and has a rechargeable battery capable of running the concentrator for greater than 2 hours.