Autoinjector
AssigneeSanofi-Aventis Deutschland GmbH
InventorsThomas Henley, David Cross, Douglas Ivan Jennings, Ryan Anthony McGinley
Life of this patent
Estimating the term…
Abstract
Described is an autoinjector comprising a front case having a first rib and a second rib, and a rear case telescopically coupled to the front case and having latch arms adapted to engage the first rib and the second rib. When the front case is in a first position relative to rear case, the latch arms are engaged to the first rib. When the latch arms disengage the first rib, the front case translates to a second position relative to the rear case, an axial distance between the front case and the rear case increases relative to the first position, the latch arms engage the second rib.
Claims24
An autoinjector comprising:
- a front case having a first rib and a second rib, the front case being adapted to hold a syringe;
- an interlock sleeve slidably disposed in the front case and adapted to project distally through a distal opening in the front case to contact an injection site;
- a rear case telescopically coupled to the front case, the rear case having latch arms adapted to engage the first rib and the second rib, wherein, when the front case is in a first position relative to rear case, the latch arms are engaged to the first rib;
- and
- a drive spring configured to (i) apply a force on the syringe to dispense a medicament from the syringe and (ii) cause the latch arms to disengage the first rib,
- wherein, when the latch arms disengage the first rib, the front case translates to a second position relative to the rear case, an axial distance between the front case and the rear case increases relative to the first position, and the latch arms engage the second rib.
Dependencies are inferred from the claim text.