Portable Liquid Oxygen Delivery System with Pneumatic Respiratory Synchronization

The patent applies periodic action by interrupting the oxygen flow to match the patient's respiratory cycle. The system delivers oxygen in periodic bursts during inhalation and stops flow during exhalation, rather than maintaining continuous flow. This is achieved through sensors that detect respiratory phase and control valves that open/close accordingly, ensuring oxygen is delivered only when needed during the inhalation period and eliminating waste during exhalation.

The patent implements feedback control by using sensors to continuously monitor the patient's respiratory status and using this information to adjust the oxygen flow rate in real-time. The sensor detects inhalation and exhalation phases, and this feedback signal controls the delivery system to provide oxygen during inhalation and stop during exhalation. This closed-loop feedback mechanism ensures adequate therapy delivery while preventing oxygen waste.

The patent applies self-service by designing a pneumatic oxygen conserver that uses the patient's own breath to drive the flow interruption mechanism. The device utilizes the pressure changes created by the patient's inhalation and exhalation to automatically open and close flow control valves, eliminating the need for external power sources or complex electronic control systems. The system essentially uses the patient's respiratory effort to regulate its own operation, reducing device complexity while maintaining oxygen conservation.

The patent employs pneumatic principles by using the pressure variations generated during the patient's breathing cycle to control the oxygen flow. The inhalation creates negative pressure that opens the flow valve, and exhalation creates positive pressure that closes it. This pneumatic control mechanism replaces complex electronic sensing and actuation systems with simple pressure-driven valve operation, reducing device complexity while achieving effective oxygen conservation.

The patent applies segmentation by dividing the liquid oxygen storage system into multiple smaller portable containers rather than using a single large stationary canister. Each portable container holds a portion of the total oxygen supply and can be independently carried by the patient. This segmentation maintains the space efficiency benefits of liquid oxygen storage while enabling portability, as patients can distribute the weight and volume across multiple smaller units that are easier to transport.

The patent addresses the portability issue by transitioning from a single large vertical storage dimension to multiple smaller distributed storage units. Instead of one large canister that is difficult to move, the system uses several smaller containers that can be carried in different dimensions (e.g., in bags, on belts, or in vehicles). This dimensional redistribution of the storage capacity maintains liquid oxygen's space efficiency while solving the portability constraint.