PROBLEM TO BE SOLVED: To provide a device that can indwell in a muscle and around a muscle through a lumen, and can electrically and directly control a sphincter muscle for adjusting an inflow and an outflow of a lumen organ.SOLUTION: A muscle stimulation device 10 indwelling in a body includes an electrode for applying electric stimulation for shrinking a muscle fiber in a living body to a muscle fiber, an electric stimulation control part for controlling electric output of electric stimulation, an indwelling part for indwelling an electrode in the muscle fiber or near the muscle, and a detachable part connected to the indwelling part and detachable from a conveyance device inserted from the outside of the living body.SELECTED DRAWING: Figure 1【課題】本発明は、管腔を経由し、筋及び筋周囲留置可能な、管腔臓器の流入・流出を調整する括約筋を直接電気的に制御できる装置を提供することを目的とする。【解決手段】本発明に係る体内留置筋刺激装置１０は、生体内の筋繊維を収縮させる電気刺激を筋繊維に付与する電極と、電気刺激の電気出力を制御する電気刺激制御部と、電極を筋繊維又は筋繊維近傍に留置する留置部と、留置部と接続され、生体の外部から挿入される搬送器具に対し脱着可能な脱着部と、を備える。【選択図】図１
