Patent ID: 6095986
Filing Date: 2000-08-01
Classification: A61B

Abstract:
An endotracheal airway adapter for use in a respiratory airstream of a patient in proximity of the patient's mouth during quantitative measurement of the concentration of respiratory constituents of the patient using a respiratory analyzer having infrared transmission and detection devices disposed in a housing which receives said airway adapter, said airway adapter comprising:a substantially tubular portion comprised of a material which is slightly deformable and has oppositely disposed openings in a width-wise direction thereof which lie in an optical path between said infrared transmission and detection devices when received by said housing;a pair of thin plastic windows respectively disposed over said oppositely disposed openings of said tubular portion so as to form a substantially airtight seal and so as to be a predetermined distance from each other during said quantitative measurement of the concentration of respiratory constituents of the patient using said infrared transmission and detection devices, said windows passing infrared energy from said infrared transmission device to said detection device; anda non-toxic anti-fog surfactant which treats said windows so as to prevent fogging of said windows when said windows are placed in the respiratory airstream of the patient.