Injection device with retaining means actuated by needle shield

A device (1) for injection of a product into an injection site, the product being carried by a container (2) having an open proximal end (2a) and a substantially closed distal end (2b) carrying a needle (4) to provide an outlet port for the product from the container, and a piston (5) provided in the container and movable with respect to the container, the movement of the piston causing the product to be expelled from the container through the needle, said device (1) comprising:

• a housing (15) receiving at least partly said container (2), said container (2) being movable relative to said housing (15) between an initial position, in which a tip of the needle (4) does not extend beyond a distal end (15b) of said housing (15) and an insertion position, distally spaced relative to said initial position, and in which the tip of the needle (4) extends beyond said distal end (15b) of said housing (15),
• a needle shield (6) releasably coupled with said container (2), for protecting said needle (4) prior to use of the device (1),
• said device (1) being characterized in that it further comprises:
• retaining means (13, 14, 17) provided at or near said distal end (2b) of said device (1), designed for preventing said container (2) to move distally with respect to said housing (15) until said needle shield (6) is removed from said container (2).