Patent ID: 6475156
Filing Date: 2002-11-05
Classification: A61B,A61M

Abstract:
A process for operating an apparatus for the diagnosis or the treatment of the respiratory sleep disorders of a user, said apparatus comprising at least one motorized turbine making it possible to deliver a stream of respiratory gas under variable or constant pressure into at least one patient circuit capable of being linked to said user, comprising the steps of:(a) determining an image of the respiratory flow rate (IdD) of the patient by detecting and/or monitoring the variations in the electric current consumed by the turbine during at least part of at least one given respiratory cycle; (b) determining an image of the respiratory volume (IdV) of the patient by integrating the image of the respiratory flow rate of the patient (IdD) so as to obtain the area (Acc) of the current consumed during at least part of said at least one given respiratory cycle; (c) determining the moving average (ma-IdV) of the image of the respiratory volume of the patient over the n respiratory cycles which preceded said at least one given respiratory cycle, with n>5; (d) determining at least one cue representative of at least one respiratory flow rate restriction during at least said given respiratory cycle: (i) by comparing the image of the respiratory volume (IdV) as determined in step (b) with the moving average (ma-IdV) of the image of the respiratory volume as determined in step (c), and/or (ii) by calculating the ratio between the image of the respiratory volume (IdV) as determined in step (b) and the area (Asp) of a preset pure sine and/or the area (Asc) of a preset square signal; (e) storing and/or displaying and/or printing at least one cue as determined in step (d).