Medicament delivery device

1. A medicament delivery device comprising:

a body;

a medicament container slidably disposed within the body;

a piston rod coupled to the body; and

a deformable syringe retarder that is part of the piston rod, the deformable syringe retarder having a diameter greater than an internal diameter of the medicament container and configured to abut against a proximal end of the medicament container,

wherein the deformable syringe retarder is configured to deform on application of a predefined force on the medicament container in a proximal direction relative to the piston rod.

2. The medicament delivery device of claim 1 , wherein the deformable syringe retarder is configured to deform radially inward.

3. The medicament delivery device of claim 1 , wherein the deformable syringe retarder is configured to slidably enter a barrel of the medicament container.

4. The medicament delivery device of claim 1 , wherein the deformable syringe retarder comprises one or more resilient arms.

5. The medicament delivery device of claim 1 , further comprising a sleeve slidably coupled to the body, wherein the sleeve comprises a proximal stop and a distal stop adapted to abut the medicament container.

6. The medicament delivery device of claim 1 , further comprising a container carrier for retaining the medicament container within the body, the container carrier slidably disposed in the body.

7. The medicament delivery device of claim 6 , wherein the piston rod is coupled to the container carrier and the piston rod and the container carrier are configured to provide a feedback as the container carrier moves from a first position to a second position relative to the body.

8. The medicament delivery device of claim 6 , wherein the container carrier comprises one or more radially inwardly biased legs adapted to engage a ratchet toothing on the piston rod in such a manner that the container carrier can move in the proximal direction but is prevented from moving in a distal direction relative to the piston rod.

9. The medicament delivery device of claim 1 , wherein the piston rod is coupled to the body in a manner preventing relative movement between the piston rod and the body.

10. A medicament delivery device comprising:

a body;

a medicament container slidably disposed within the body;

a piston rod coupled to the body;

a container carrier for retaining the medicament container within the body, the container carrier slidably disposed in the body; and

a sleeve slidably coupled to the body, wherein the sleeve comprises a collar adapted to distally abut an axial stop on the body.

11. The medicament delivery device of claim 10 , wherein the sleeve comprises a proximal stop and a distal stop adapted to abut the medicament container.

12. The medicament delivery device of claim 10 , wherein the sleeve comprises one or more sleeve legs extending in a proximal direction beyond the collar.

13. The medicament delivery device of claim 10 , wherein the piston rod is coupled to the container carrier and the piston rod and the container carrier are configured to provide a feedback as the container carrier moves from a first position to a second position relative to the body.

14. The medicament delivery device of claim 10 , wherein the container carrier comprises one or more radially inwardly biased legs adapted to engage a ratchet toothing on the piston rod in such a manner that the container carrier can move in a proximal direction but is prevented from moving in a distal direction relative to the piston rod.

15. The medicament delivery device of claim 10 , further comprising at least one clamp arranged on the container carrier and adapted to proximally abut the medicament container.

16. The medicament delivery device of claim 15 , wherein the body includes a rib configured to radially abut the at least one clamp to maintain the at least one clamp in a first angular position when the container carrier is in a first position, and wherein the at least one clamp is configured to deflect radially to a second angular position when the container carrier is in a second position.

17. The medicament delivery device of claim 10 , wherein the piston rod is coupled to the body in a manner preventing relative movement between the piston rod and the body.

18. A method comprising:

sliding a sleeve in a proximal direction within a body of a medicament delivery device;

abutting a proximal flange of a medicament container with a syringe retarder that is part of a piston rod fixedly attached to the body to prevent movement of the medicament container relative to the body, wherein a diameter of the syringe retarder is greater than a diameter of the proximal flange of the medicament container;

engaging a distal stop of the sleeve against the proximal flange of the medicament container to prevent further proximal sliding of the sleeve relative to the medicament container;

deforming the syringe retarder to a deformed state by further sliding the sleeve in the proximal direction relative to the body; and

sliding the deformed syringe retarder within a barrel of the medicament container to move the piston rod relative to the medicament container to expel a medicament of the medicament container from the medicament delivery device.

19. A medicament delivery device comprising:

a body;

a medicament container slidably disposed within the body;

a piston rod coupled to the body; and

a sleeve slidably coupled to the body, wherein the sleeve comprises (i) a collar adapted to distally abut an axial stop on the body, (ii) a proximal stop, and (iii) a distal stop adapted to abut the medicament container.

20. The medicament delivery device of claim 19 , wherein the sleeve comprises one or more sleeve legs extending in a proximal direction beyond the collar.

21. The medicament delivery device of claim 19 , further comprising a container carrier for retaining the medicament container within the body, the container carrier slidably disposed in the body.

22. The medicament delivery device of claim 21 , wherein the piston rod is coupled to the container carrier and the piston rod and the container carrier are configured to provide a feedback as the container carrier moves from a first position to a second position relative to the body.

23. The medicament delivery device of claim 21 , wherein the container carrier comprises one or more radially inwardly biased legs adapted to engage a ratchet toothing on the piston rod in such a manner that the container carrier can move in a proximal direction but is prevented from moving in a distal direction relative to the piston rod.

24. The medicament delivery device of claim 21 , further comprising at least one clamp arranged on the container carrier and adapted to proximally abut the medicament container.

25. The medicament delivery device of claim 24 , wherein the body includes a rib configured to radially abut the at least one clamp to maintain the at least one clamp in a first angular position when the container carrier is in a first position, and wherein the at least one clamp is configured to deflect radially to a second angular position when the container carrier is in a second position.

26. The medicament delivery device of claim 19 , wherein the piston rod is coupled to the body in a manner preventing relative movement between the piston rod and the body.

27. A medicament delivery device comprising:

a body;

a medicament container slidably disposed within the body;

a piston rod coupled to the body; and

a sleeve slidably coupled to the body, wherein the sleeve comprises (i) a collar adapted to distally abut an axial stop on the body and (ii) one or more sleeve legs extending in a proximal direction beyond the collar.

28. The medicament delivery device of claim 27 , wherein the sleeve comprises a proximal stop and a distal stop adapted to abut the medicament container.

29. The medicament delivery device of claim 27 , further comprising a container carrier for retaining the medicament container within the body, the container carrier slidably disposed in the body.

30. The medicament delivery device of claim 29 , wherein the piston rod is coupled to the container carrier and the piston rod and the container carrier are configured to provide a feedback as the container carrier moves from a first position to a second position relative to the body.

31. The medicament delivery device of claim 29 , wherein the container carrier comprises one or more radially inwardly biased legs adapted to engage a ratchet toothing on the piston rod in such a manner that the container carrier can move in the proximal direction but is prevented from moving in a distal direction relative to the piston rod.

32. The medicament delivery device of claim 29 , further comprising at least one clamp arranged on the container carrier and adapted to proximally abut the medicament container.

33. The medicament delivery device of claim 32 , wherein the body includes a rib configured to radially abut the at least one clamp to maintain the at least one clamp in a first angular position when the container carrier is in a first position, and wherein the at least one clamp is configured to deflect radially to a second angular position when the container carrier is in a second position.

34. The medicament delivery device of claim 27 , wherein the piston rod is coupled to the body in a manner preventing relative movement between the piston rod and the body.

35. A medicament delivery device comprising:

a body;

a medicament container slidably disposed within the body;

a piston rod coupled to the body in a manner preventing relative movement between the piston rod and the body; and

a sleeve slidably coupled to the body, wherein the sleeve comprises a collar adapted to distally abut an axial stop on the body.

36. The medicament delivery device of claim 35 , wherein the sleeve comprises a proximal stop and a distal stop adapted to abut the medicament container.

37. The medicament delivery device of claim 35 , wherein the sleeve comprises one or more sleeve legs extending in a proximal direction beyond the collar.

38. The medicament delivery device of claim 35 , further comprising a container carrier for retaining the medicament container within the body, the container carrier slidably disposed in the body.

39. The medicament delivery device of claim 38 , wherein the piston rod is coupled to the container carrier and the piston rod and the container carrier are configured to provide a feedback as the container carrier moves from a first position to a second position relative to the body.

40. The medicament delivery device of claim 38 , wherein the container carrier comprises one or more radially inwardly biased legs adapted to engage a ratchet toothing on the piston rod in such a manner that the container carrier can move in a proximal direction but is prevented from moving in a distal direction relative to the piston rod.

41. The medicament delivery device of claim 38 , further comprising at least one clamp arranged on the container carrier and adapted to proximally abut the medicament container.

42. The medicament delivery device of claim 41 , wherein the body includes a rib configured to radially abut the at least one clamp to maintain the at least one clamp in a first angular position when the container carrier is in a first position, and wherein the at least one clamp is configured to deflect radially to a second angular position when the container carrier is in a second position.