| 摘要 |
The syringe for medical purposes consists of a syringe barrel (1), at least one stopper (2) arranged therein and displaceable by means of a plunger rod (3), and a finge r support (4) which is connected to the end of the syringe barrel (1) and which is provide d with an opening (5) for passage of the plunger rod (3). In particular, it is formed as a dua l- chamber syringe in which the pharmaceutical agent and the solvent are arranged in a distal and a proximal chamber (7, 8), separated from each other by means of an additional stopper (6) until application when they can be brought together via a by-pass. The plunger rod (3) is provided with radially projecting detent elements (10, 13), for whose passage through the finger support (4) at least one recess (11) is provided in the rim of the opening (5). The detent elements (10, 13) are arranged several in a row in the axial direction of th e plunger rod (3) and/or are arranged around the longitudinal axis of the plunger rod (3), alternately offset by a specific angle of rotation. An elastically sprung compression element (12) i s provided in the area of the recess (11) on the rim which abuts against the plunger rod (3) o r the detent elements (10), respectively.
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