Patent ID: 6446630
Filing Date: 2002-09-10
Classification: A61M

Abstract:
Apparatus for filling a cylinder with oxygen enriched air from a medical oxygen concentrator and for delivering oxygen enriched air to a patient comprising, in combination, a nasal cannula adapted to deliver a flow of oxygen enriched air from the oxygen concentrator to a patient, a cylinder, a cylinder filler circuit adapted to fill said cylinder with oxygen enriched air from the oxygen concentrator, a flow control valve having an inlet adapted to receive oxygen enriched air from the oxygen concentrator and having first and second positions, said flow control valve delivering oxygen enriched air from the oxygen concentrator to said nasal cannula when in said first position and delivering oxygen enriched air from the oxygen concentrator to said cylinder filler circuit for filling said cylinder when in said second position, a sensor adapted to detect patient inhalation at said nasal cannula, and a control circuit responsive to the detection of patient inhalation at said nasal cannula for momentarily positioning said flow control valve in said first position to deliver a dose of oxygen enriched air to the patient during such inhalation and then for positioning said flow control valve in said second position for delivering oxygen enriched air to said cylinder filler circuit.