Patent ID: 8579868

Claim:
A medical delivery system comprising: a container comprising a housing adapted to contain a medicament in a reservoir and a slideably arranged piston which is moveable in a distal direction towards an outlet so as to reduce the volume of the reservoir and expel the medicament through the outlet; a dosing assembly having a container receiving cavity for at least partly receiving the container therein and for coupling the container to the dosing assembly so as to allow driving means of the dosing assembly to move the piston of the container in the distal direction; wherein the dosing assembly defines a first fastening means adapted to engage a second fastening means of the container so as to fasten the container to the dosing assembly where a fastening movement comprises a relative axial movement along a first axis followed by a relative rotational movement around the first axis; wherein the dosing assembly comprises one or more blocking elements, each blocking element being moveable from a first position where the blocking element relative to said first axis extends radially into said container receiving cavity and moveable into a second position where the blocking elements are moved radially outwards, and wherein the blocking elements are moveable from said first position to said second position responsive to said rotational movement while being prevented to move from said first position to said second position when acted upon by an axially directed force; and wherein the container housing, when containing the medicament in said reservoir, defines a proximal end having a second cavity adapted to receive the driving means of the dosing assembly, the proximal end comprising a wall part formed with one or more axially extending indentations, each indentation forming an open area that extends from said second cavity and radially outwards to the container exterior to allow said one or more blocking elements to be received in a respective indentation when the container is axially inserted into said container receiving cavity, and the indentations are moved relatively to the blocking elements responsive to said rotational movement.