Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1998-05-26
2000-07-18
Lewis, Aaron J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820312, A61M 1600
Patent
active
060892293
ABSTRACT:
A respiratory therapy apparatus that delivers a predetermined pulsed dose of a therapeutic gas to a patient upon inhalation of the patient. The system has separate conduits for the supply of the therapeutic gas at a high concentration and for the supply of a diluent gas. The therapeutic gas conduit has a control valve that is accurately controlled to open and close so as to deliver a precise dose of the high concentration therapeutic gas. The diluent gas conduit has means to ensure there is sufficient flow of diluent gas to ensure the said high concentration therapy gas is diluted to a safe concentration. A third conduit receives the gases from both the first and second conduits so that the gases are mixed together and administered to the patient. By this system, the therapeutic gas supply can be of a high, otherwise harmful, concentration and the therapeutic gas is diluted prior to introduction to the patient. The therapeutic gas may be nitric oxide and the diluent gas may be nitrogen or an oxygen containing gas.
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Bathe Duncan P. L.
Montgomery Frederick J.
Datex-Ohmeda Inc.
Lewis Aaron J.
Mitchell Teena
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