| 摘要 |
The invention relates to a medical device for delivering at least one fluid. The technical problem of preventing after-dripping and at the same time improving the safety and the dose accuracy of a medical device is solved by a medical device comprising a reservoir (2), a bung (8), a piston (10), an electromechanical device (12) and a control unit (14). The reservoir, the bung, the piston and the electromechanical device controlled by the control unit are arranged such that the electromechanical device are instructed to move the bung via a piston over a predetermined distance and a fluid is ejectable from the reservoir by an advancing movement of the bung. Furthermore, the control unit is configured such that, after a dwell time following the advancing movement of the piston, the piston is retractable by the electromechanical device, wherein the control unit is configured sucht that, within the dwell time, the electromechanical device is moved with a second forward movement. |
