Medical delivery system comprising a container and a dosing assembly with radially moving fastening means

A medical delivery system comprising:

• a container adapted to contain a medicament in a chamber;
• a dosing assembly adapted to be fastened to the container;
• wherein one of the container and the dosing assembly defines a first part comprising a first fastening means and the other one of the container and the dosing assembly defines a second part comprising a second fastening means, the first fastening means and the second fastening means being adapted to fasten said first part to the second part by translationally moving the first part relative to the second part along the center axis followed by a relative rotational locking movement around the center axis;
• wherein the first part includes a cylindrical rim part, the rim part comprising an axially extending opening adapted to receive the second fastening means of the second part when the first part is moved along the centre axis into engagement with the second part,
• wherein the rim part further comprises the first fastening means which are formed in a section of said rim part adjoining, in a circumferential direction, said axially extending opening;
• wherein the first fastening means is radially moveable from an initial non-locking position into a second locking position by bending or pivoting about a bending axis which is substantially parallel with the center axis, the first fastening means further defining a first locking surface adapted to engage a second locking surface formed in the second part when the first fastening means is in its second locking position whereby the first part is axially retained with respect to the second part;
• and
• wherein, responsive to said relative rotational locking movement, the second fastening means urges the first fastening means into its second locking position upon relative rotational movement between the first fastening means and the second fastening means.