This invention is a safety assistant device for surgery. The device includes a tooth brace and a safety indicator. During the surgery, the patient can wear the brace and the safety indicator can point out the mental nerve hole. Thus, the surgeon can avoid hurting the nerve during the process of trans-oral thyroidectomy.一種手術安全輔助裝置,其包括一牙套本體,係配合患者牙齒外型所形成的牙套,可配戴於患者牙齒上;一安全器,係於牙套上可指出患者下頷神經孔位置;使用時可讓患者配戴設有安全器之牙套,指示出患者之兩側神經孔之位置,避免於手術中傷害下頷神經,以實施經口甲狀腺切除手術。1‧‧‧牙套12‧‧‧安全器21‧‧‧牙齒22‧‧‧神經孔
