Patent ID: 6475158
Filing Date: 2002-11-05
Classification: A61B

Abstract:
A calorimeter, comprising:an inlet configured to communicate with an airway of an individual to receive expiratory gases from the individual; a respiratory flow detection component in communication with said inlet; a mixing chamber in communication with said inlet to receive at least one expiratory breath from the individual and average the respiratory gases of said at least one expiratory breath; a respiratory gas measurement component in communication with said mixing chamber and downstream therefrom to receive expiratory respiration from the individual under pressure of the individual's expiratory breaths; an outlet located so as to receive gas from said respiratory gas measurement component and to expel the gas from the calorimeter; and a calibrator in communication with at least said respiratory gas measurement component and said outlet and positioned so as to draw calibration gas into the calorimeter through said outlet to a location for detection by at least said respiratory gas measurement component.