PROBLEM TO BE SOLVED: To provide a novel powder inhalation device by which the load of a patient can be reduced when inhaling by securing a passage for air to flow in when administering a medicine in a capsule by the inhalation of the patient and an operation for inserting the capsule into a housing chamber can be easily carried out.SOLUTION: The powder inhalation device has a block body 110 having a housing chamber Rc for housing the capsule C filled with a medicinal powder, a boring means D arranged in the outer side of the block body 110 and for boring a hole in the outer skin of the capsule C arranged in the housing chamber Rc, a medicinal powder receiving section M for receiving the medicinal powder of the capsule C in which the hole is bored in the outer skin, and a mouthpiece 130 for making it possible to inhale the medicinal powder of the medicinal powder receiving section M through a discharging path connected to the medicinal powder receiving section M, and is characterized by having supporting ribs R erected from the wall face of the housing chamber Rc and supporting the capsule C by bringing the erected projecting ends R1 into contact with the outer skin of the capsule C.COPYRIGHT: (C)2012,JPO&INPIT【課題】患者の吸引によりカプセル内の薬剤を投与する際に、空気が流入する経路を確保して吸引時の患者の負担を軽減でき、カプセルを収納室に挿入する操作が容易に行える新規な粉体吸入デバイスを提供する。【解決手段】本発明の粉体吸入デバイスは、薬粉を充填したカプセルCを収納する収納室Rcを有するブロック体110と、ブロック体110の外側に備えられ収納室Rcに配置されたカプセルCの外皮に孔を開ける穿孔手段Dと、外皮に孔があけられたカプセルCの薬粉を受容する薬粉受容部Mと、薬粉受容部Mとつながる排出路を通して薬粉受容部Mの薬粉を吸引可能とするマウスピース130とを備えた粉体吸入デバイスであって、収納室Rcの壁面から立ち上がり、立ち上がり突端R1をカプセルCの外皮に当接させてカプセルCを支える支持リブRを備えることを特徴とする。【選択図】図2