Patent ID: 6192884
Filing Date: 2001-02-27
Classification: A61M

Abstract:
A breath-synchronized supplemental oxygen delivery device comprising:(a) a breathing element for transferring an intake fluid including ambient air and supplemental oxygen to a patient for inhalation by the patient and for transferring an exhaled fluid from the patient;(b) a reservoir having a reservoir body and an open end, the open end in fluid communication with the atmosphere and the reservoir body in fluid communication with the breathing element;(c) a non-return inhalation valve disposed within the reservoir body upstream of the breathing element;(d) a non-return exhalation valve disposed downstream of the breathing element;(e) an oxygen supply source disposed in fluid communication with the reservoir at a location upstream of the inhalation valve; and(f) supplemental oxygen delivery means cooperatively defined by the inhalation valve, the reservoir and the oxygen supply source for passively developing, during an exhalation effort by the patient, an oxygen bolus upstream of the inhalation valve for delivery to the patient during a first period of an inhalation effort by the patient and for subsequently delivering ambient air to the patient.