| 摘要 |
PURPOSE:To enable always lighting of the inside of an oral cavity evenly by a method wherein a support frame body is so arranged to provide a repulsive force against an access of hook members to each other and an optical fiber connectable to an external light source is introduced into internal wings of the hook members through the support frame body to emit light from the light source via external sides of the internal wings. CONSTITUTION:Hook members 4a and 4b coupled are pressed from both sides to narrow an interval therebetween so that an oral corner of a patient is made to fit a groove part 1 of the hook members 4a and 4b. Then, when the hands are released, the interval of the hook members 4a and 4b is restored because of a repulsive elasticity of a support frame body to push the oral corner part so open that a mouth of a patient can be kept wider open. Under such a condition, when an optical fiber 7 of the support frame body 5 is connected to a light source 6, light of the light source 6 is emitted evenly inside an oral cavity from internal wings 3 of the hook members 5 located along a cheek mucosa within the oral cavity. This can always secure light with a fixed brightness for a part to be treated while enabling the maintaining of the opening of the patient stably. |
