Closure for medicament container

1. A closure cap for sealing an outlet end of a barrel of a medicament container, the outlet end having a radially widened rim and the outlet end being sealable by an elastomeric seal, wherein the elastomeric seal comprises a flange portion configured to abut in a longitudinal direction with the outlet end, the closure cap comprising:

a cap body comprising a retainer portion, a fastening portion, and an outer flange portion,

wherein the retainer portion is configured to engage with the elastomeric seal,

wherein the fastening portion comprises a resiliently and radially deformable fastener comprising a snap feature configured to releasably engage with the radially widened rim of the outlet end,

wherein a longitudinal distance between the retainer portion and the snap feature is sized to receive the radially widened rim of the outlet end and the flange portion of the elastomeric seal between the retainer portion and the snap feature,

wherein the outer flange portion protrudes radially outwardly from at least one of the retainer portion or the fastening portion,

wherein the outer flange portion comprises a lower gripping surface facing towards the fastening portion, and

wherein the outer flange portion comprises an outer rim protruding in the longitudinal direction from the lower gripping surface.

2. The closure cap according to claim 1 , wherein the longitudinal distance between the retainer portion and the snap feature is less than or equal to a sum of a longitudinal extension of the radially widened rim of the outlet end and a longitudinal thickness of the flange portion of the elastomeric seal.

3. The closure cap according to claim 1 , wherein the cap body comprises a lid portion and a sidewall, the lid portion and the sidewall forming a cup-shaped receptacle configured to receive the radially widened rim of the outlet end and the flange portion of the elastomeric seal, wherein the retainer portion at least partially forms the lid portion, and wherein the fastening portion and the fastener are integrated into the sidewall.

4. The closure cap according to claim 3 , wherein the snap feature comprises a protrusion protruding from an inside surface of the sidewall.

5. The closure cap according to claim 3 , wherein the sidewall is of a tubular shape and wherein the snap feature comprises a radially inwardly protruding rim.

6. The closure cap according to claim 3 , wherein a longitudinal thickness of the lid portion in a radial center of the lid portion is larger than a longitudinal thickness of the lid portion at a radial distance from the radial center of the lid portion.

7. The closure cap according to claim 1 , wherein the snap feature is located at or near a free end of the fastening portion, the free end facing away from the retainer portion, and wherein the snap feature comprises a lead-in chamfer to engage with at least one of the flange portion of the elastomeric seal or the radially widened rim of the outlet end.

8. The closure cap according to claim 1 , wherein the retainer portion and the fastening portion are integrally formed and wherein the cap body is made of a polymeric material or is made of a plastic material.

9. The closure cap according to claim 1 , wherein the outer flange portion comprises a number of radially extending struts extending from the fastening portion to the outer rim.

10. The closure cap according to claim 1 , wherein the fastening portion comprises a tamper evident seal, the tamper evident seal comprises a frangible section, the frangible section comprising at least a first frangible segment and a second frangible segment, wherein the first frangible segment and the second frangible segment are interconnected by a frangible connector.

11. A medicament container comprising:

a barrel comprising an outlet end, wherein the outlet end has a radially widened rim,

an elastomeric seal configured to seal the outlet end and comprising a flange portion to abut in a longitudinal direction with the outlet end, and

a closure cap, comprising:

a cap body comprising a retainer portion, a fastening portion, and an outer flange portion,

wherein the retainer portion is engaged with the elastomeric seal,

wherein the fastening portion comprises a resiliently and radially deformable fastener comprising a snap feature releasably engaged with the radially widened rim of the outlet end to keep the elastomeric seal in position on the outlet end,

wherein a longitudinal distance between the retainer portion and the snap feature is sized to receive the radially widened rim of the outlet end and the flange portion of the elastomeric seal between the retainer portion and the snap feature,

wherein the outer flange portion protrudes radially outwardly from at least one of the retainer portion or the fastening portion,

wherein the outer flange portion comprises a lower gripping surface facing towards the fastening portion, and

wherein the outer flange portion comprises an outer rim protruding in the longitudinal direction from the lower gripping surface.

12. The medicament container according to claim 11 , wherein a medicament is arranged inside the barrel.

13. The medicament container according to claim 11 , wherein the barrel comprises at least one through opening in a region offset from the outlet end.

14. The medicament container according to claim 11 , wherein the cap body comprises a lid portion and a sidewall, the lid portion and the sidewall forming a cup-shaped receptacle in which the radially widened rim of the outlet end and the flange portion of the elastomeric seal is received, wherein the retainer portion at least partially forms the lid portion, and wherein the fastening portion and the fastener are integrated into the sidewall.

15. The medicament container according to claim 14 , wherein the snap feature comprises a protrusion protruding from an inside surface of the sidewall.

16. The medicament container according to claim 11 , wherein the snap feature is located at or near a free end of the fastening portion, the free end facing away from the retainer portion, and wherein the snap feature comprises a lead-in chamfer to engage with at least one of the flange portion of the elastomeric seal or the radially widened rim of the outlet end.

17. The medicament container according to claim 11 , wherein the fastening portion comprises a tamper evident seal, the tamper evident seal comprises a frangible section, the frangible section comprising at least a first frangible segment and a second frangible segment, wherein the first frangible segment and the second frangible segment are interconnected by a frangible connector.

18. A closure cap for sealing an outlet end of a barrel of a medicament container, the outlet end having a radially widened rim and the outlet end being sealable by an elastomeric seal, wherein the elastomeric seal comprises a flange portion configured to abut in a longitudinal direction with the outlet end, the closure cap comprising:

a cap body comprising a lid portion and a sidewall, the lid portion forming a cup-shaped receptacle configured to receive the radially widened rim of the outlet end and the flange portion of the elastomeric seal,

wherein the lid portion is configured to engage with the elastomeric seal,

wherein the sidewall comprises a resiliently and radially deformable fastener comprising a snap feature configured to releasably engage with the radially widened rim of the outlet end, and

wherein a longitudinal distance between the lid portion and the snap feature is sized to receive the radially widened rim of the outlet end and the flange portion of the elastomeric seal between the lid portion and the snap feature, and

wherein a longitudinal thickness of the lid portion in a radial center of the lid portion is larger than a longitudinal thickness of the lid portion at a radial distance from the radial center of the lid portion.