Patent ID: 6312389
Filing Date: 2001-11-06
Classification: A61B,G01F,G01N

Abstract:
An integrated airway adapter providing a CO.sub.2 concentration monitoring capability and a differential pressure measurement capability for determining respiratory gas flow, said integrated airway adapter comprising:a housing having a bore and a longitudinal axis;a first pressure port and a second pressure port opening into said bore and structure communicating with said first pressure port and said second pressure port exterior to said housing for detecting a pressure differential in respiratory gas flowing through said housing bore;a structure located within said housing bore for creating said pressure differential;a detection chamber defined within said housing at least partially between said first pressure port and said second pressure port, said detection chamber communicating with said bore; anda pair of windows located on opposing sides of said detection chamber and aligned along an optical path traversing the detection chamber,each of said pair of windows being optically compatible to allow a beam of infrared radiation originating on one side of said detection chamber to traverse said respiratory gas when located in said detection chamber to be received by a detecting system to determine a CO.sub.2 concentration in said respiratory gas.