Methods, systems and devices using LOX to provide ventilatory support

摘要

A portable liquid oxygen system may provide an average flow rate of oxygen gas at approximately 6 - approximately 20 Ipm using a rapid gas conversion mode. The liquid oxygen system may weigh less than 10 pounds. A heat exchanger may be provided, and wherein the rapid gas conversion mode may utilize a heater on the heat exchanger. The rapid gas conversion mode may utilize a Stirling engine passing air from a hot sink across the heat exchanger to a cold sink. The system may have multiple modes of operation. The modes of operation may be a continuum of settings and not discrete modes of operation. Flow capacity may be changed when switching between modes of operation. Oxygen gas pressure may be changed when switching between modes of operation. The system may automatically switch modes of operation based on a patient's condition.