U.S. Patent No. 7,406,966 - Method And Device For Non-Invasive Ventilation With Nasal Interface (Aug. 5, 2008)

A nasal ventilation interface including a pair of tubes configured to deliver a ventilation gas. The tubes are attachable at a first end to a ventilation gas supply hose and engageable at a second end with a person's nostril. A coupler is configured to align the pair of tubes with the person's nostrils, wherein each tube has an absence of pneumatic interconnection with the other tube.