Device for preventing leakage from the mouth

1. A device for suppressing leakage from the mouth when nasally supplying a respiratory gas on a pressure level lying above ambient pressure, the device comprising:

a base body made from an elastomeric material and comprising an inner ring edge portion and an outer ring edge portion, wherein the two ring edge portions are coupled with each other via a joining portion and wherein furthermore the base body, in combination with the two ring edge portions as well as the joining portion, are configured in such a manner that in the application position of the base body the base body defines a lip receiving area adapted for receiving the lips of the user while suppressing leakage from the mouth, wherein the outer ring edge portion extends radially outward beyond the inner ring edge portion in the application position, wherein the base body comprises a solid member dimensioned to cover the opening of the mouth in use.

2. The device according to claim 1 , wherein at least one of the ring edge portions is upendable so that it can be brought from a first position providing an enlarged lip receiving area into a holding position in which a reduced gap between the two ring edge portions is formed.

3. The device according to claim 1 , wherein the base body is made from a silicone rubber.

4. The device according to claim 1 , wherein the base body is configured in such a manner that the ring edge portions are adapted and shaped to slightly clamp the lips of the user in an edge portion that is radially further spaced from the mouth opening by an elastic deformation of the base body.

5. A device for suppressing leakage from the mouth when nasally supplying a respiratory gas on a pressure level lying above ambient pressure, the device comprising:

a base body made from an elastomeric material and comprising an inner ring edge portion and an outer ring edge portion, wherein the two ring edge portions are coupled with each other via a joining portion and wherein furthermore the base body, in combination with the two ring edge portions as well as the joining portion, are configured in such a manner that in the application position of the base body the base body defines a lip receiving area adapted for receiving the lips of the user while suppressing leakage from the mouth, further comprising a lift-off device provided to facilitate the removal of the base body from the mouth of the user, the lift off device being structured to deform the outer ring edge portion upon application of tensile forces to the lift-off device, wherein the base body comprises a solid member dimensioned to cover the opening of the mouth in use.

6. The device according to claim 5 , wherein the lift-off device comprises a ring clip, a loop or a ring bracket.

7. A device for suppressing leakage from the mouth when nasally supplying a respiratory gas on a pressure level lying above ambient pressure, the device comprising:

a base body made from an elastomeric material and comprising an inner ring edge portion and an outer ring edge portion, wherein the two ring edge portions are coupled with each other via a joining portion and wherein furthermore the base body, in combination with the two ring edge portions as well as the joining portion, are configured in such a manner that in the application position of the base body the base body defines a lip receiving area adapted for receiving the lips of the user, at least said outer ring edge portion being solid so as to suppress suppressing leakage from the mouth, wherein the base body is provided with an inner web adapted to extend and to be anchored behind the user's teeth, wherein the base body comprises a solid member dimensioned to cover the opening of the mouth in use.

8. A device for suppressing leakage from the mouth when nasally supplying a respiratory gas on a pressure level lying above ambient pressure, the device comprising:

a base body made from an elastomeric material and comprising an inner ring edge portion and an outer ring edge portion, wherein the two ring edge portions are coupled with each other via a joining portion and wherein furthermore the base body, in combination with the two ring edge portions as well as the joining portion, are configured in such a manner that in the application position of the base body the base body defines a lip receiving area adapted for receiving the lips of the user while suppressing leakage from the mouth, wherein the outer ring edge portion is configured such that it defines an essentially elliptically and concavely bulged lip rest area, wherein the base body comprises a solid member dimensioned to cover the opening of the mouth in use.

9. A device for suppressing leakage from the mouth when nasally supplying a respiratory gas on a pressure level lying above ambient pressure, the device comprising:

a base body made from an elastomeric material and comprising an inner ring edge portion and an outer ring edge portion, wherein the two ring edge portions are coupled with each other via a joining portion and wherein furthermore the base body, in combination with the two ring edge portions as well as the joining portion, are configured in such a manner that in the application position of the base body the base body defines a lip receiving area adapted for receiving the lips of the user while suppressing leakage from the mouth, wherein the outer ring edge portion extends radially outward beyond the inner ring edge portion in the application position, wherein the base body does not include an aperture.

10. A device for suppressing leakage from the mouth when nasally supplying a respiratory gas on a pressure level lying above ambient pressure, the device comprising:

a base body made from an elastomeric material and comprising an inner ring edge portion and an outer ring edge portion, wherein the two ring edge portions are coupled with each other via a joining portion and wherein furthermore the base body, in combination with the two ring edge portions as well as the joining portion, are configured in such a manner that in the application position of the base body the base body defines a lip receiving area adapted for receiving the lips of the user while suppressing leakage from the mouth, further comprising a lift-off device provided to facilitate the removal of the base body from the mouth of the user, the lift off device being structured to deform the outer ring edge portion upon application of tensile forces to the lift-off device, wherein the base body does not include an aperture.

11. A device for suppressing leakage from the mouth when nasally supplying a respiratory gas on a pressure level lying above ambient pressure, the device comprising:

a base body made from an elastomeric material and comprising an inner ring edge portion and an outer ring edge portion, wherein the two ring edge portions are coupled with each other via a joining portion and wherein furthermore the base body, in combination with the two ring edge portions as well as the joining portion, are configured in such a manner that in the application position of the base body the base body defines a lip receiving area adapted for receiving the lips of the user, at least said outer ring edge portion being solid so as to suppress suppressing leakage from the mouth, wherein the base body is provided with an inner web adapted to extend and to be anchored behind the user's teeth, wherein the base body does not include an aperture.

12. A device for suppressing leakage from the mouth when nasally supplying a respiratory gas on a pressure level lying above ambient pressure, the device comprising:

a base body made from an elastomeric material and comprising an inner ring edge portion and an outer ring edge portion, wherein the two ring edge portions are coupled with each other via a joining portion and wherein furthermore the base body, in combination with the two ring edge portions as well as the joining portion, are configured in such a manner that in the application position of the base body the base body defines a lip receiving area adapted for receiving the lips of the user while suppressing leakage from the mouth, wherein the outer ring edge portion is configured such that it defines an essentially elliptically and concavely bulged lip rest area, wherein the base body does not include an aperture so as to completely suppress leak through the base body.