Patent ID: 6192876
Filing Date: 2001-02-27
Classification: A61B,A61M

Abstract:
An apparatus for ensuring the fit of a face mask to the face of a patient, comprising:a face mask which includes an inlet through which gas can be inhaled;a sensor for measuring the flow rate of gas drawn through the inlet of the face mask and providing a signal indicating said flow rate, said signal having breath cycle waveforms;a processor that receives and analyzes said signal and compares flow rate waveforms to determine if they are substantially uniform over a plurality of breath cycles, andan indicator for providing an indication as to when the face mask is satisfactorily fitted to a patient,wherein the fit of the face mask is determined by monitoring the flow rate of gas drawn through the inlet of the face mask upon inhalation by the patient, with the face mask being considered satisfactorily to fit the patient when a substantially regular inhalation waveform is achieved.