Patent ID: 6155985
Filing Date: 2000-12-05
Classification: A61B,A61M

Abstract:
A method of determining the image of at least one of the nasal and buccal respiratory flows of a user, comprising:administering respiratory gas to said user by means of a blower driven by a motor;continuously measuring the current consumed by the blower motor;deriving from that measurement a consumed current signal;processing said consumed current signal;deriving an image of at least one of the nasal and buccal respiratory flows of the user from the processed current signal;determining the mean value (V.sub.1) of the image of the respiratory flow during a time t.sub.1 and the mean value (V.sub.2) of the image of respiratory flow during a time t.sub.2, wherein t.sub.1 >t.sub.2 ;calculating the value .DELTA.(V), wherein .DELTA.(V)=V.sub.1 -V.sub.2 ; andderiving from the value .DELTA.(V) information as to the inhalatory phase or the exhalatory phase of the user.