| 摘要 |
PROBLEM TO BE SOLVED: To provide an oral cavity dilating device capable of easily inserting into an oral cavity even by forming wings externally protruding into angulus oris hooks. SOLUTION: The oral cavity dilating device comprises a pair of angulus oris hooks 2 and 3 inserted into the oral cavity to press to dilate the angulus oris, the wings 5 and 6 projected from the hooks 2 and 3 toward outward to dilate a depth side of the oral cavity, and a spring arm 4 of a substantially U shape for coupling the hooks 2 and 3. The device has a structure in which the hooks 2 and 3 press the ends of the wings 5 and 6 in a direction for approaching the wings 5 and 6 to each other against a spring force of spring arm 4 to contact the ends with each other to stabilize the contacted parts as a fulcrum K of rotation so that the contacted ends are rotated toward an inside with the result that the wings 5 and 6 approach each other when the hooks 2 and 3 are inserted into the cavity. |
