PROBLEM TO BE SOLVED: To provide an apparatus housing for IMD. A device housing for an IMD of the present invention is arranged vertically on the front side and the front side, and is parallel to a flat end surface connected to a straight upper end on the front side and a straight upper end. It has a front side with a maximum width (Bmax) when measured and a maximum height (Hmax) when measured perpendicular to the straight top edge, with a maximum width (Bmax) and a maximum height (Hmax). The ratio R (ie, Bmax / Hmax) of is between 1.05 and 1.35. [Selection diagram] Fig. 1【課題】IMD用の装置筐体。【解決手段】本発明のIMD用の装置筐体は、前面側と、前面側に垂直に配置され、前面側の真っ直ぐな上端に接続されている平らな末端面と、真っ直ぐな上端に平行に測定された場合の最大幅(Bmax)および真っ直ぐな上端に垂直に測定された場合の最大高さ(Hmax)を有する前面側とを有し、最大幅(Bmax)と最大高さ(Hmax)との比R(すなわち、Bmax/Hmax)が1.05と1.35との間であることに特徴付けられる。【選択図】図1