| 摘要 |
There is disclosed an improved breathing assistance device. The breathing assistance device comprises a lip shield attached to and spaced from an upper mouth piece such that when said upper mouth piece is positioned on said wearer's upper arch, said lip shield is positioned outside said wearer's mouth and extends to at least the vermillion border of said wearer's upper and lower lips, such that when said wearer's lips are in a pressurized position said upper and lower lips contact said lip shield and said lip shield substantially prevents air from being released through said wearer's lips. A method of using a breathing assistance device is also disclosed. |
