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`Attorney Docket No. 46567-0349002
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`DE2013/138WO
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`Claims
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`1.
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`An autoinjector (1) comprising:
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`a case (2) including a rib (2.3);
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`a needle shroud (7) telescopically coupled to the case (2) and movable between
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`a first extended position (FEP), a retracted position (RP) and a locked second extended
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`position (SEP);
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`a carrier (8) slidably arranged in the case (2) and adapted to hold a medicament
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`container, the carrier (8) movable from a first axial position to a second axial position
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`relative to the case (2);
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`a collar (16) rotatably and slidably disposed in the case (2), the collar (16)
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`coupled to the needle shroud (7) and the carrier (8); and
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`a trigger button (13) operably coupled to the carrier (8),
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`wherein the carrier (8) abuts the rib (2.3) in the first axial position and the needle
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`shroud (7) is in the first extended position (FEP) and disengages the rib (2.3) when the
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`needle shroud (7) is in the retracted position (RP) and the trigger button (13) is pressed
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`to advance the carrier (8) to the second axial position,
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`wherein the collar (16) includes a shroud boss (18) adapted to engage a shroud
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`slot (17) in the needle shroud (7) and a carrier boss (20) adapted to engage a carrier
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`slot (19) in the carrier (8),
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`the autoinjector (1) further comprising a control spring (9) biasing the collar (16)
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`in a distal direction (D) relative to the case (2),
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`wherein the collar (16), dependent on the relative axial and rotational position in
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`relation to the needle shroud (7) and the carrier (8), couples the force of the control
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`spring (9) to either the carrier (8) or the needle shroud (7).
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`2.
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`The autoinjector (1) according to claim 1, further comprising:
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`a plunger (12) slidably coupled to the carrier (8); and
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`a drive spring (10) biasing the plunger (12) relative to the carrier (8).
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`10
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`15
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`20
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`25
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`30
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`22
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`Attorney Docket No. 46567-0349002
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`3.
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`The autoinjector (1) according to claim 2, wherein the carrier (8) includes a
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`compliant beam (8.3) having a boss (8.4) adapted to engage an opening (12.1) in the
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`plunger (12) when the carrier (8) is in the first axial position.
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`4.
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`The autoinjector (1) according to claim 3, wherein the boss (8.4) is adapted to
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`engage the case (2) when the carrier (8) is in the second axial position.
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`5.
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`The autoinjector (1) according to any one of the preceding claims, wherein the
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`collar (16) is in a first angular position relative to the case (2) when the needle shroud
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`10
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`(7) is in the first extended position (EP) and the carrier (8) is in the first axia| position.
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`6.
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`The autoinjector (1) according to claim 5, wherein the collar (16) rotates to a
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`second angular position relative to the case (2) and translates proximally relative to the
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`case (2) when the needle shroud (7) moves from the first extended position (EP) to the
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`15
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`retracted position (RP).
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`20
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`25
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`30
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`7.
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`The autoinjector (1) according to claim 6, wherein the collar (16) translates
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`distally relative to the case (2) when the needle shroud (7) is in the retracted position
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`(RP) and the carrier (8) moves from the first axia| position to the second axial position.
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`8.
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`The autoinjector (1) according to claims 2 and 7, wherein the boss (8.4)
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`disengages the opening (12.1) and abuts the case (2) when the carrier (8) is in the
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`second axial position, and wherein the plunger (12) translates axially relative to the
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`carrier (8) underthe force of the drive spring (10) advancing the carrier (8) from the
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`second axial position to a third axial position relative to the case (2).
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`9.
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`The autoinjector (1) according to claim 8, wherein the collar (16) rotates to a third
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`angular position relative to the case (2) and translates with the needle shroud (7) distally
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`relative to the case (2) when the carrier (8) is in the third axial position.
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`10.
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`The autoinjector (1) according to claim 9, wherein the collar (16) rotates to a
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`fourth angular position relative to the case (2) when the needle shroud (7) is in the
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`locked second extended position (SEP).
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`Attorney Docket No. 46567-0349002
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`11.
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`The autoinjector (1) according to claim 1 and 10, wherein the carrier boss (20) is
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`adapted to abut a surface (19.6) in the carrier slot (19) when the collar (16) is in the
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`fourth angular position and the needle shroud (7) is in the locked second extended
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`position (SEP).
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`12.
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`The autoinjector (1) according to claim 4 and 11, wherein the engagement of the
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`carrier boss (20) and the carrier slot notch and the engagement of the carrier (8) to the
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`case (2) substantially fixes the collar (16) in an axial position relative to the case (2).
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`13.
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`The autoinjector (1) according to any of the preceding claims, wherein the carrier
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`(8) includes a compliant beam (8.2) adapted to engage the rib (2.3) when the carrier (8)
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`is in the first and second axial positions.
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`14.
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`The autoinjector (1) according to claim 13, wherein the needle shroud (7)
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`includes a ramp (7.1) adapted to engage and deflect the compliant beam (8.2) as the
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`needle shroud (7) translates from the first extended position (FEP) to the retracted
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`position (RP).
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`10
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`15
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