Patent ID: 11878155
Assignee: BECTON DICKINSON FRANCE S.A.S.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A passive safety device comprising:
an inner needle shield having a proximal end, said proximal end being configured to be sealed to a tip of an injection device, a distal portion, said distal portion being configured to be pricked by a needle in a pre-use position of the passive safety device and pierced by the needle in an injection position of the passive safety device, and an energy storage portion configured to accumulate energy as the passive safety device passes from the pre-use position to the injection position and to release energy as the passive safety device passes from the injection position to a safety position,
a sleeve surrounding at least the proximal end of the inner needle shield,
an outer needle shield having a proximal end slidably attached to the sleeve so that the outer needle shield is movable relative to the sleeve,
a lock configured to lock the outer needle shield when the passive safety device reaches the safety position, and
wherein the inner needle shield is configured to move the outer needle shield distally as the energy storage portion releases its stored energy,
wherein the sleeve comprises a distal part that extends beyond the tip of the injection device, said distal part defining a lateral containment wall surrounding at least a part of the energy storage portion of the inner needle shield, and
wherein the lateral containment wall is configured to force the energy storage portion of the inner needle shield to deform inwardly when the distal portion of the inner needle shield is moved to the injection position.