Enhanced manually actuated pressure controlled modulator technology

a device for providing ventilatory support of a patient, comprising:

• a. a patient connection port;
• b. a source of gas;
• c. a valve, said valve opening and closing as a result of pressure at said patient connection port, said valve opening at a pressure greater than pressure required for said valve to close;
• d. said source of gas providing flow to said patient connection port when said valve is closed;
• e. a primary chamber, said primary chamber receiving flow from said gas source when said valve is open, resulting force of internal pressure of said primary chamber directed onto said valve in the open direction;
• f. a secondary chamber, said secondary chamber having an internal pressure which exerts a force on said valve that is in opposition of internal force of said primary chamber;
• g. a equalization conduit, said equalization conduit providing fluid communication between said primary chamber and said secondary chamber;
• and
• h. an ambient actuation conduit, said ambient actuation conduit providing fluid communication between said secondary chamber and the ambient environment.

A device for providing ventilatory support of a patient, comprising:

• a. a inlet chamber in fluid communication with a patient port and a source of gas;
• b. a housing, said housing containing a valve;
• c. a primary chamber, said primary chamber contained in said housing and having a greater internal pressure when said valve is open than when said valve is closed;
• d. a secondary chamber, said secondary chamber contained in said housing;
• e. a ambient actuation conduit, said ambient actuation conduit providing fluid communication between said secondary chamber and the fluid space outside said housing;
• f. an exhalation port;
• said exhalation port providing fluid communication between said primary chamber and the fluid space outside said housing;
• g. wherein the internal pressure of said secondary chamber is less than the internal pressure of said primary chamber whenever said ambient actuation conduit is un-occluded.