Patent ID: 11911600
Assignee: BECTON DICKINSON FRANCE S.A.S.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. An injection device for injecting a composition contained in a medical container comprising:
a body configured to receive the medical container in a fixed position relative to the body;
a spring-loaded piston rod translationally movable inside the body along a spring axis, between a proximal rest position and a distal operative position wherein the spring-loaded piston rod engages a stopper of the medical container; and
a selective blocking mechanism comprising a braking member selectively tiltable relative to the spring-loaded piston rod between:
a blocking position wherein the braking member impinges on the spring-loaded piston rod so as to prevent any translational movement of the spring-loaded piston rod in a distal direction by a bracing effect; and
a releasing position wherein the braking member disengages from the spring-loaded piston rod so as to allow the spring-loaded piston rod to move towards the distal operative position under a spring force,

wherein the braking member comprises an actuation zone configured for moving the braking member from the blocking position to the releasing position,
wherein the selective blocking mechanism further comprises a spring member that urges the braking member to the blocking position, and
wherein the spring member is arranged around the spring-loaded piston rod directly in contact with the braking member.