Respiratory Ventilation System with Gas Sparing Valve Having Optional CPAP Mode and Mask for Use with Same

Abstract

A system for delivering gas to a patient. The system includes a gas control unit, a breathing circuit, a control switch, and a patient interface. The gas control unit has a main gas outlet. The breathing circuit has a main gas line having a first end. The first end of the main gas line is coupled to the main gas outlet. The control switch may be a pneumatic switch, in which case the breathing circuit further has a pilot control line for pneumatically controlling the gas control unit to deliver gas to the main gas line via the main gas outlet. The control switch may be an electrical switch, in which case the breathing circuit may use electrical control of the gas delivery or electrical and pneumatic control of the gas delivery. Other embodiment of the gas control unit may include a continuous positive airway pressure branch.

Dependencies are inferred from the claim text.