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AssigneeSanofi-Aventis Deutschland GmbH
InventorsYannick Hourmand, Simon Brereton, Thomas Mark Kemp, Rosie Burnell, Matthew Ekman
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Described is an autoinjector comprising a case, a chassis slidably arranged in the case, a syringe carrier operably coupled to the chassis, an outer plunger selectively engaged to the chassis, an inner plunger selectively engaged to the outer plunger, and a drive spring applying a biasing force to the outer plunger. The biasing force is applied to the inner plunger when the inner plunger is engaged to the outer plunger. Rotation of the chassis causes the inner plunger to rotate relative to the outer plunger and disengage the outer plunger to remove the biasing force from the drive spring on the inner plunger. When the inner plunger disengages the outer plunger, the biasing force of the drive spring pushes the chassis to retract the syringe carrier relative to the case.
An autoinjector (1) comprising:
The autoinjector (1) according to any one of the preceding claims, further comprising:
The autoinjector (1) according to any one of the preceding claims, further comprising:
The autoinjector (1) according to 8, wherein the chassis (8) includes a resilient clip (8.5) adapted to engage a stop (11.2) on the coupling carrier (11).
Dependencies are inferred from the claim text.