Patent ID: 6089229
Filing Date: 2000-07-18
Classification: A61M

Abstract:
A respiratory therapy apparatus for delivering a pulse dose of a therapeutic gas to a patient at a safe concentration, said apparatus comprising:means connecting said respiratory therapy apparatus to a source of a high concentration therapeutic gas,means connecting said respiratory therapy apparatus to a source of a diluent gas,means to establish a predetermined desired pulse dose of therapeutic gas,sensing means for sensing the initiation of an inhalation of a patient,delivery means having a first state and a second state, said delivery means delivering a pulse of high concentration therapeutic gas when said delivery means is in said second state, said delivery means being responsive to said sensing means for sensing the initiation of an inhalation of a patient and controlling the amount of time said delivery means is in the second state to deliver a pulse of said high concentration therapeutic gas during the inhalation of the patient for mixing with said diluent gas;flow measurement means for measuring the flow of said diluent gas to a patient, andmeans responsive to said flow measurement means for providing a sufficient flow of said diluent gas to a patient to ensure said high concentration of therapeutic gas is diluted to a safe concentration when mixed with said diluent gas.