Device for preventing leakage from the mouth

摘要

The present invention relates to a device for avoiding leakage from the mouth when nasally supplying a respiratory gas on a pressure level lying above ambient pressure. The device comprises a base body made from an elastomeric material and comprises an inner edge portion and an outer ring edge portion, wherein the two ring edge portions are coupled with each other via a web portion, and wherein furthermore the base body, in combination with the two ring edge portions and the web portion, is configured in such a manner that in the application position of the base body the latter defines a lip receiving area for receiving the lips of the user.