A plurality of times to provide a drainable dosing device by spraying, certain agents the same amount. Is connected to the proximal end of the gasket and the barrel a spray nozzle mounted to the distal end, the gasket dripping slidably provided in a liquid tight manner to the barrel, the rod having a guide groove, provided in the barrel, the guide A sprayer and a regulating member having a sliding fit can projection slidably groove, the guide groove, the second is provided by consecutive administration the first groove, the administration groove in said at least one consists of a dosing groove extending circumferentially, and a transition portion provided to match the base end portion of the administration of the first dose groove of said second, from the transition section groove wall proximal the provision consists in the administration of a second portion extending longitudinally proximal direction, provided at the boundary between the administration the second portion and the transition portion, a biasing protrusion capable of engaging with the projection sprayer, which is characterized.所定同量の薬剤を、複数回、噴霧して排出可能な投与器を提供すること。先端に噴霧ノズル取り付け可能なバレルと、前記バレル内を液密に摺動可能に設けたれたガスケットとガスケットの基端に連結され，ガイド溝を有するロッドと、前記バレルに備えられた、前記ガイド溝とスライド自在に滑合可能な突起を有する規制部材とを含む噴霧器であって、前記ガイド溝は、少なくとも第一の投与溝と、該第一の投与溝から連続して設けられる第二の投与溝とからなり、前記第二の投与溝は、周方向に延び、基端側の溝壁は前記第一の投与部分の基端と一致するように設けられる移行部分と、該移行部分から長手基端方向へ延びる第二の投与部分とで構成され、前記移行部分と前記第二の投与部分との境に設けられた、前記突起と係止可能な付勢用凸部と設けることを特徴とする噴霧器。
