PROBLEM TO BE SOLVED: To provide a metering element for an inhalation device and an inhalation device comprising the metering element.SOLUTION: A metering element 33 for an inhalation device comprises at least one opening 10 configured to receive a substance, where the opening comprises a width 9 and an entire height 13, where the height extends along a longitudinal axis mx of the metering element and the width extends across the longitudinal axis, and where a continuous width 8 of the opening is less than the entire height of the opening. An assembly for an inhalation device comprises a sealing member, which has a main body and a sealing lip 81, where a removal of substance from a metering chamber 40 upon mechanical cooperation of the metering element with the sealing member is prevented.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2019,JPO&INPIT【課題】吸入デバイス用の計量要素および計量要素を含む吸入デバイスを提供する。【解決手段】吸入デバイス用の計量要素33は、物質を受け入れるように構成された少なくとも1つの開口部10を含み、開口部が幅9および全高13を含み、高さが計量要素の長手方向軸線mxに沿って延び、幅が長手方向軸線を横切って延び、開口部の連続する幅8が開口部の全高よりも短い。さらに、本体および封止リップ81を持つ封止部材を含み、計量要素が封止部材と機械的に協働したとき物質を計量チャンバ40から取り出すことが防止される、吸入デバイス用のアセンブリ。【選択図】図4