Breathing circuits that are not conventional respiratory ducts and systems and processes to optimize the use of fresh gases

摘要

"Breathing circuits that are not conventional respiratory ducts and systems and processes to optimize the use of fresh gases.Breathing circuit comprising a first (30) and a second conduit (40), in which at least one of the conduits is a conduit unconventional.A breathing circuit of a single branch and multiple lumens is also described with a first (30) and a second conduit (40), in which,When the proximal ends of said first and second conduits (30) and (40) are each connected to an adapter inlet (10) and outlet (20), respectively.The movement of the distal end of the first conduit (30) to produce a corresponding movement of the distal end of the second conduit (40).In one implementation, at least one of said conduits is spiral shaped.In another implementation, a spiral conduit is contained within an outer flexible conduit (40) which is axially extensible and compressible.Forming a respiratory circuit of a single branch and multiple lumens. The flexible outer conduit (40) can be folded to provide an axial extension and contraction.The respiratory circuit of multiple lumens may provide a volume of repeat breath variable.Also described are processes and systems to optimize the use of fresh gases during artificial or assisted ventilation, including the administration of anesthesia.