Abstract: A device for alleviating obstructive sleep apnea includes: a base fixed to a user's head and having a passage; a suction member having a channel passing through the passage to enter the user's oral cavity and move within the passage, with the channel connected to a tongue fixing portion disposed at the tip of the user's tongue, wherein the suction member has a stopping portion disposed outside the oral cavity to limit forward displacement of the tongue fixing portion; a resilient element for providing the tongue fixing portion with an elastic force required to approach the base and being weaker than a suction force between the suction member and the tongue and weaker than a pulling force generated by the tongue in tongue motion; and a negative pressure source communicating with the channel to provide negative pressure to the tongue in contact with the tongue fixing portion.

Abstract: A device for alleviating obstructive sleep apnea, comprising: a base fitted and fixed to an user's head and having a passage portion; an adjustment element extending into the passage portion and undergoing relative displacement therein; a locking element disposed at the passage portion, wherein an user uses the locking element to fix the adjustment element in place to limit the relative displacement of the adjustment element; a suction member undergoing relative displacement relative to the passage portion together with the adjustment element and having a channel, wherein the channel extends into the adjustment element, undergoes relative displacement in the adjustment element, and connects to a tongue fixing portion disposed at the front end of the user's tongue; and a negative pressure source being mounted on the base and in communication with the channel, providing a negative pressure to the user's tongue in contact with the tongue fixing portion.