Patent ID: 8728042

Claim:
An injection syringe comprising a syringe cylinder, a plunger rod that is inserted therein and connected to a stopper by way of a coupling part, and a module (M) that is provided in a proximal end of the syringe cylinder and comprises a cannula, which is mounted in a cannula holder received together with a driving part, which is drivable by the cannula holder, in a guiding sleeve, and further a sealing insert for a fluid-tight closure of the proximal end of the syringe cylinder and a protective cap for protecting the cannula, wherein the protective cap has on an inner circumference ribs extending in an axial direction, which engage in corresponding grooves of the driving part for a rotary drive thereof, wherein in the sealing insert a hollow space is formed, which is closed on a proximal side and on a distal side transitions into an opening, by way of which a tip of the coupling part can be coupled to the hollow space, wherein a proximal front face of the sealing insert and a distal front face of the guiding sleeve are constructed axially symmetrically and can be inserted firmly into one another: and wherein an outer circumference of the guiding sleeve is equal to an inner circumference of the proximal end of the syringe cylinder and to an inner circumference of a distal end of the protective cap, in order to hold the guiding sleeve axially symmetrically in a tilt-proof manner.