| 摘要 |
The invention relates to an injection device for injecting a selectable dose of a liquid substance from an ampoule (2), located in an ampoule holder (1), comprising a piston (12) and a sleeve-shaped mechanism holder (3), mechanically coupled thereto, in the interior of which a longitudinally shiftable shaft (4) is provided which acts on the ampoule (2), the shaft (4) being surrounded by an also longitudinally shiftable advancing sleeve (5), mechanically coupled thereto, which in its upper end area is closed by a lid (7). For selecting a dose of the liquid substance to be injected, a dosing sleeve (6) with a stepped member (13) is provided, which is disposed on the mechanism holder (3) in its upper end area, the dose to be respectively administered being adjustable by a rotation of the dosing sleeve (6) with the stepped member (13).
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