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US 11,951,292 B2Granted
Autoinjector
AssigneeSanofi-Aventis Deutschland GmbH
InventorThomas Kemp
Life of this patent
Estimating the term…
Abstract
An autoinjector includes a case, a syringe carrier slidably disposed within the case and adapted to hold a syringe including a stopper, a plunger slidably disposed within the syringe carrier and adapted to apply a force on the stopper, and a drive spring disposed within the plunger and biasing the plunger relative to the syringe carrier.
Claims15
An auto-injector comprising:
- a case adapted to hold a syringe containing a liquid medicament, a stopper being arranged for sealing the syringe proximally and for displacing the liquid medicament through a needle arranged or received at a distal end of the syringe;
- and
- a needle shroud telescoped within the case and movable between an extended position and a retracted position, the needle shroud biased relative to the case toward the extended position by a control spring, wherein the syringe is held in a syringe carrier, and the syringe carrier is slidably arranged within the case;
- wherein the syringe carrier comprises a distal portion adapted to hold the syringe and a proximal portion adapted to retain a plunger,
- wherein the auto-injector is configured such that the needle shroud is moved towards the extended position relative to the syringe carrier by the control spring, and
- wherein the control spring is proximally grounded in the case by direct physical contact to the case.
3 more elements
Dependencies are inferred from the claim text.