AUTOINJECTOR

摘要

Described is an autoinjector (1) comprising a case (2) including a rib (2.3), a needle shroud (7) telescopically coupled to the case (2) and movable between a first extended position (FEP), a retracted position (RP) and a locked second extended position (SEP), a carrier (8) slidably arranged in the case (2), adapted to hold a medicament container, and movable from a first axial position to a second axial position relative to the case (2), a collar (16) rotatably and slidably disposed in the case (2) and coupled to the needle shroud (7) and the carrier (8), and a trigger button (13) operably coupled to the carrier (8). The carrier (8) abuts the rib (2.3) in the first axial position and the needle shroud (7) is in the first extended position (FEP) and disengages the rib (2.3) when the needle shroud (7) is in the retracted position (RP) and the trigger button (13) is pressed to advance the carrier (8) to the second axial position.

主权项

1. An autoinjector (1) comprising:
a case (2) including a rib (2.3); a needle shroud (7) telescopically coupled to the case (2) and movable between a first extended position (FEP), a retracted position (RP) and a locked second extended position (SEP); a carrier (8) slidably arranged in the case (2) and adapted to hold a medicament container, the carrier (8) movable from a first axial position to a second axial position relative to the case (2); a collar (16) rotatably and slidably disposed in the case (2), the collar (16) coupled to the needle shroud (7) and the carrier (8); and a trigger button (13) operably coupled to the carrier (8), wherein the carrier (8) abuts the rib (2.3) in the first axial position and the needle shroud (7) is in the first extended position (FEP) and disengages the rib (2.3) when the needle shroud (7) is in the retracted position (RP) and the trigger button (13) is pressed to advance the carrier (8) to the second axial position, wherein the collar (16) includes a shroud boss (18) adapted to engage a shroud slot (17) in the needle shroud (7) and a carrier boss (20) adapted to engage a carrier slot (19) in the carrier (8), the autoinjector (1) further comprising a control spring (9) biasing the collar (16) in a distal direction (D) relative to the case (2), wherein the collar (16), dependent on the relative axial and rotational position in relation to the needle shroud (7) and the carrier (8), couples the force of the control spring (9) to either the carrier (8) or the needle shroud (7).