PROBLEM TO BE SOLVED: To provide a mouth opener for making a mouth an open state where the mouth is opened.SOLUTION: The mouth opener comprises at least: a muscle acting part configured to cover the masseter muscle on a face from the outside via a skin or the like, and applying a muscular relaxation action and a muscular tone action to the masseter muscle and a muscle-acting-part holding mechanism configured to position the muscle acting part corresponding to the masseter muscle via the skin. The mouth opener makes the mouth an open state where the mouth is opened by applying the muscular relaxation or muscular tone action to the masseter muscle as need arises.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】口が開いた開口状態とさせる開口器を提供する。【解決手段】本発明は、顔面における咀嚼筋を、皮膚等を介して外部から覆うように構成され、該咀嚼筋に対して筋弛緩作用や、筋緊張作用を与える対筋作用部と、前記対筋作用部を、皮膚を介して咀嚼筋に対応して位置決め可能に構成される対筋作用部保持機構とから、少なくとも構成され、前記咀嚼筋に筋弛緩作用や筋緊張作用を必要に応じて与えることで、口が開いた開口状態とさせる。【選択図】なし
