Abstract: An oral dilator includes a first body, a second body, a rotary member, and a positioning member. The first body includes a housing and a first duckbilled element. The second body includes a second duckbilled element corresponding to the first duckbilled element. The rotary member drives the second body to rotate. The positioning member is on the first body and selectively locks or unlocks the relative position between the first duckbilled element and the second duckbilled element when the second duckbilled element is driven to rotate by the rotary member.

Abstract: The present application provides a dynamic assessment and rehabilitation system for vertigo patients and the application method thereof, which uses a moveable monitoring platform to monitor and test a walking user and coordinates a first wearing unit to observe the head-turning condition to ensure the operating intensity of the user, in additional, by disposing a terminal module capable of recording the using condition of the user and analyzing and calculating the signals generated during the test process. In accordance with aforesaid system, the physiologic status of a vertigo patient can be assessed in a walking status and the patient can be given a feedback corresponding thereto, therefore raising the using efficiency of the user.

Abstract: An oral dilator includes a first body, a second body, a rotary member, and a positioning member. The first body includes a housing and a first duckbilled element. The second body includes a second duckbilled element corresponding to the first duckbilled element. The rotary member drives the second body to rotate. The positioning member is on the first body and selectively locks or unlocks the relative position between the first duckbilled element and the second duckbilled element when the second duckbilled element is driven to rotate by the rotary member.