초록 ▼

A non-contact gas dispenser comprising a head set apparatus, a gas source and a conduit for directing the desired gas to a region proximate to the user's nose and mouth. The gas source preferably is a pressure swing adsorption apparatus that allows the user to select one of at least two pre-determin

A non-contact gas dispenser comprising a head set apparatus, a gas source and a conduit for directing the desired gas to a region proximate to the user's nose and mouth. The gas source preferably is a pressure swing adsorption apparatus that allows the user to select one of at least two pre-determined settings of product gas, each setting having a distinct concentration and flow rate different from the other setting(s).

대표청구항 ▼

[ We claim:] [1.] A non-contact gas dispenser to be worn by a user for inhalation of oxygen through the nose and/or mouth of the user, the dispenser comprisinga source of gas which contains oxygen in a concentration from about 50% oxygen to about 95% oxygen;a nozzle to dispense the gas to a plane de

[ We claim:] [1.] A non-contact gas dispenser to be worn by a user for inhalation of oxygen through the nose and/or mouth of the user, the dispenser comprisinga source of gas which contains oxygen in a concentration from about 50% oxygen to about 95% oxygen;a nozzle to dispense the gas to a plane defining an inspirational area for inhalation by the user;conduit means for delivering the gas from the gas source to the nozzle at a selected flow rate within a range from about 3 liters/minute to about 15 liters/minute;means for supporting the nozzle in at least two positions proximate to but not in contact with the user's nose or mouth, the two positions being in a range from about 2 cm to about 8 cm from a center point of the inspirational area, andmeans for adjusting the supporting means to locate the nozzle at a position in which the oxygen concentration at the center point is at a selected amount within a range from about 25% to about 40%.