| 摘要 |
<p>In the present invention, provided is a device inserted in the mouth, comprising a pressurizing part which is seated on the upper teeth of users and extended toward the inside of the mouth and pulls the rear side of the tongue while pressurizing the same downward where the device is inserted in the mouth of users and accordingly enables the pressurizing part to push the rear side of the tongue while pulling the same, thereby preventing the tongue from moving back and accordingly preventing the tongue from closing the air duct.</p> |
