Patent ID: 8074646
Filing Date: 2011-12-13
Classification: A61B,A61M,Y10S

Abstract:
1. A system for controlling breathing of a patient, comprising: a respiratory conduit; said respiratory conduit is configured to be coupled to a patient interface device; said respiratory conduit is further configured to be coupled to a pressurized air generating device; said respiratory conduit includes a first, second, and third air flow control devices, positioned between said patient interface device and said pressurized air generating device, each of said air flow control devices defines an orifice being in communication with ambient air; and said respiratory conduit includes at least two volumes, wherein one volume is positioned between said first air flow control device and said second air flow control device and a second volume is positioned between said second air flow control device and said third air flow control device; wherein said volumes are partial dead space volumes configured to accumulate at least a portion of breath expired by the patient; wherein said first, second, and third air flow control devices are configured to control a rate of excretion of carbon dioxide from said respiratory conduit and a concentration of said carbon dioxide in blood of the patient; and wherein said second airflow control device comprises an internal conduit being disposed within said second volume in a substantially coaxial configuration, said internal conduit defining multiple openings along a longitudinal axis, said internal conduit being coupled to a valve that is configured to control evacuation of carbon dioxide from within said second volume to the ambient air.