The invention refers to an inhalation device for powdered drugs to be received by a patient by an inhalation-caused air stream, comprising at least one powder reservoir, metering means for repeatedly metering a powder dose from the reservoir, a transportation mechanism for moving said metering means from a filling position for receiving a powder dose into an emptying position for releasing said powder dose into a powder channel, at least one activating device for manual operation by the patient being operatively connected to said transportation mechanism such that upon operation a single powder dose is being metered, said activating device comprising a dosage key (5) acting on said transportation mechanism when actuated by the patient. According to the invention, said transportation mechanism furthermore comprises a dosage lever (6) acting on said metering means, said dosage lever (6) being locked in the inhalation position of said metering means after said dosage key (5) has been properly pressed down by the patient. The dosage lever (6) in the inhalation position engages a trigger member and is releasable by actuation of the trigger member. The trigger member comprises at least one cam surface and the dosage lever (6) engages the cam surface tangentially in said locked inhalation position.本發明有關一種藉由病人吸入引起之氣流，接受粉狀藥物之吸入裝置，其包含至少一種粉末貯存器；計量元件，用於重複地從該貯存器定出一粉末劑量；一輸送機構，用於將該計量元件從接受粉末劑量之充填位置，推至釋出該粉末劑量進入粉末通道之排空位置；至少一種作動裝置，用於供病人手動操作，該作動裝置係可操作地連接至該輸送機構，如此，操作時，定量出單一粉末劑量，該作動裝置包含一劑量鍵，當由病人按下時，作用在該輸送機構上。根據本發明，該輸送機構進一步包含一劑量槓桿，其作用在該計量元件上，在病人適當地按下該劑量鍵後，該劑量槓桿會被鎖定在該計量元件之吸入位置。位在該吸入位置之劑量槓桿，會嚙合一觸發構件以及因該觸發構件之作動而被放開。該觸發構件包含至少一種凸輪表面，以及在該鎖定吸入位置，該劑量槓桿係以切線方式嚙合該凸輪表面。
