Portable liquid oxygen delivery system

An intermediate liquid oxygen (LOX) source for a LOX delivery system including a portable liquid oxygen delivery apparatus and a stationary LOX canister, the intermediate LOX source comprising:

• an outer recharger LOX container;
• an inner recharger LOX container offset from the outer recharger LOX container, the inner recharger LOX container having an interior for storing LOX;
• a fill port in communication with the inner recharger LOX container for receiving LOX from an external supply;
• a discharge port in communication with the inner recharger LOX container for communicating LOX from the inner recharger LOX container interior to a portable medical delivery apparatus;
• and
• a fill vent in communication with the inner recharger LOX container interior, the fill vent having a first position that enables LOX to be received within the inner recharger LOX container interior, and a second position that inhibits LOX from being delivered to the inner recharger LOX container interior.

A liquid oxygen (LOX) delivery system comprising:

• (a) a stationary canister adapted to contain a first quantity of LOX, wherein the stationary canister remains at a fixed location, wherein the stationary canister includes a LOX discharge port;
• (b) a portable liquid oxygen recharger adapted to contain a second quantity of LOX that is less than the first quantity, wherein the portable liquid oxygen recharger is adapted to be carried by a user when filled with LOX, and wherein the portable liquid oxygen recharger includes
• (1) an inlet port adapted to be coupled to the LOX discharge port, and
• (2) an interface;
• (c) a portable liquid oxygen delivery apparatus adapted to contain a third quantity of LOX that is less than the second quantity, wherein the portable liquid oxygen delivery apparatus is sufficiently lightweight so as to be carried by a user when filled with LOX, wherein the portable liquid oxygen delivery apparatus includes:
• (1) a fill port adapted to LOX,
• (2) a delivery port adapted to dispense LOX,
• (3) vaporization system adapted to convert at least a portion the LOX in the portable liquid oxygen delivery apparatus to a breathable gas, and
• (4) a patient interface system adapted to communicate the gas to an airway of a patient,
• wherein the interface of the portable liquid oxygen recharger is adapted to be coupled to the fill port of the portable liquid oxygen delivery apparatus enabling the portable liquid oxygen delivery apparatus to be replenished with LOX without interfacing the portable liquid oxygen delivery apparatus with the stationary storage canister.

A method of storing/delivering liquid oxygen (LOX) to a user comprising:

• providing LOX to a stationary canister adapted to contain a first quantity of LOX;
• maintaining the stationary canister at a fixed location;
• providing a portable liquid oxygen recharger adapted to contain a second quantity of LOX that is less than the first quantity;
• providing a portable liquid oxygen delivery apparatus adapted to contain a third quantity of LOX that is less than the second quantity;
• transferring LOX from the stationary canister to the portable liquid oxygen recharger;
• delivering oxygen from the portable liquid oxygen delivery apparatus to an airway of a user using LOX stored in the portable liquid oxygen delivery apparatus;
• refilling the portable liquid oxygen delivery apparatus by transferring LOX from the portable liquid oxygen recharger to the portable liquid oxygen delivery apparatus.