Koninklijke Philips Corporation N.v.

Ric Investments, Inc.

Gary Nathan Holder

A system includes a nasal cannula having a flexible tube configured to transmit oxygen gas to a user, an optical fiber coupled to the nasal cannula and configured to transmit light having a frequency spectrum range at least including that of light resulting from combustion of the nasal cannula while transmitting the oxygen gas to the user, a detector operatively coupled to the optical fiber and configured to detect the light transmitted through the optical fiber, and a valve. The valve is configured to be actuated to interrupt the transmission of the oxygen gas to the user through the nasal cannula in response to a signal from the detector.

Detecting combustion of a nasal cannula

An electronic oxygen conserving device for controlling a flow of oxygen from an oxygen storage container to a user. When a conserve setting is selected, a flow of oxygen travels through an oxygen regulating valve that has an open state and a closed state. A temporary electrical charge or current is provided to the oxygen regulating valve during the initial inhalation of oxygen by an individual, opening the regulating valve opens to delivery oxygen to the user. The oxygen regulating valve remains open even after termination of the electric current. After a predetermined timed delivery dose or upon exhalation by the individual, a subsequent temporary electric charge or current is provided to oxygen regulating valve, closing the regulating valve closes to prevent delivery of oxygen to the user, thus conserving oxygen. The oxygen regulating valve remains closed even after termination of the subsequent electric current.

Gas conserving device

The present invention describes methods and systems of oxygen transfill that includes the step of delivering a quantity of liquid oxygen to an evaporation chamber in a liquid oxygen evaporation device. Next, at least a portion of the liquid oxygen in the evaporation chamber is evaporated and a quantity of gaseous oxygen is maintained at a predetermined pressure level in the evaporation chamber. The method includes filling a portable compressed oxygen device with at least a portion of the gaseous oxygen.

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Ringgold, GA, United States of America

Gary Nathan Holder