Systems for automatically removing fluid from multiple regions of a respiratory tract

A system for automatically removing fluid from multiple regions of a respiratory tract and lavaging an oral cavity portion of the respiratory tract, the system comprising:

• a controller comprising controller circuitry and one or more valves configured to couple to a source of air pressure;
• a plurality of fluid lines, wherein the fluid lines couple with the one or more valves of the controller, and wherein the controller circuitry is configured to control the one or more valves to apply positive or negative pressure through each fluid line of the plurality of fluid lines;
• a plurality of flow sensors and pressure sensors, wherein the fluid lines are each coupled to a flow sensor and a pressure sensor that are configured to report fluid flow and pressure within the fluid line to the controller;
• a source of lavage liquid, wherein the controller is configured to apply positive pressure to deliver lavage liquid;
• and
• a plurality of collection containers each coupled to a fluid line of the plurality of fluid lines and configured to collect fluid from the fluid lines, wherein the plurality of collection containers are connected between a pressure control of the controller and the plurality of flow sensors;
• wherein the controller circuitry is configured to periodically, automatically, and independently apply negative pressure to each of the fluid lines, to continue applying negative pressure until there is no more flow and to stop applying negative pressure in each fluid line of the plurality of fluid lines when the fluid flow in that fluid line indicates an absence of secretions, and to detect a blockage in the fluid line based on fluid flow and pressure in that fluid line;
• further wherein the controller circuitry is configured to clear a block in that fluid line.