Medicament delivery device

Patent metadata

Field	Value
Publication number	US-10500353-B2
Application number	US-201515515094-A
Country	US
Kind code	B2
Filing date	Sep 30, 2015
Priority date	Oct 8, 2014
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

The present disclosure relates to a medicament delivery device for injection of a medicament. The medicament delivery device comprises a housing ( 3 ) arranged to receive a medicament delivery member, a medicament delivery member cover ( 7 ) received by the housing ( 3 ), which medicament delivery member cover ( 7 ) has a cap-fitting portion ( 7 a ), wherein the medicament delivery member cover ( 1 ) is moveable relative to the housing ( 3 ) from an extended position in which the cap-fitting portion ( 7 a ) extends from the housing ( 3 ), to a retracted position in which the medicament delivery member cover ( 7 ) is biased towards the extended position, and a cap ( 11 ) arranged to receive the cap-fitting portion ( 7 a ), wherein the medicament delivery member cover ( 7 ) and the cap ( 1 ) comprise a tamper evidence mechanism which is activated by removal of the cap ( 11 ) from the cap-fitting portion ( 7 a ).

First claim

The invention claimed is:

1. A medicament delivery device for injection of a medicament, comprising:
a housing arranged to receive a medicament delivery member,
a medicament delivery member cover received by the housing, which medicament delivery member cover has a cap-fitting portion,
wherein the medicament delivery member cover is moveable relative to the housing from an extended position in which the cap-fitting portion extends from the housing, to a retracted position in which the medicament delivery member cover is biased towards the extended position, and
a cap arranged to receive the cap-fitting portion,
wherein the medicament delivery member cover and the cap comprises a tamper evidence mechanism which is activated by removal of the cap from the cap-fitting portion,
wherein the tamper evidence mechanism comprises a groove and a first shoulder,

wherein first shoulder is arranged in the groove prior to removal of the cap,
wherein the tamper evidence mechanism comprises a second shoulder arranged adjacent to the groove in the axial direction, and
wherein the second shoulder has a first shoulder abutment surface arranged in an opposite direction relative to a second shoulder abutment surface of the first shoulder when the cap-fitting portion is received by the cap.

2. The medicament delivery device as claimed in claim 1 ,
wherein the tamper evidence mechanism comprises a flexible tongue, wherein the first shoulder defines an end portion of the flexible tongue.

3. The medicament delivery device as claimed in claim 1 ,
wherein the first shoulder increases in radial dimension along the axial direction, in that direction which enables release of the first shoulder from the groove by means of axial motion.

4. The medicament delivery device as claimed in claim 1 ,
wherein the groove is defined by a surface which along the axial direction gradually increases in depth from its edge towards the midpoint of the groove.

5. The medicament delivery device as claimed in claim 1 ,
wherein the second shoulder increases in radial dimension in the opposite direction relative to the direction along which the first shoulder increases in radial dimension.

6. The medicament delivery device as claimed in claim 1 ,
wherein the groove is provided on an internal surface of the cap.

7. The medicament delivery device as claimed in claim 6 ,
wherein the first shoulder is arranged on an external surface of the medicament delivery member cover.

8. The medicament delivery device as claimed in claim 6 ,
wherein the groove extends along the inner periphery of the cap.

9. The medicament delivery device as claimed in claim 1 , wherein the housing comprises a guide structure extending axially along an internal surface of the housing.

10. The medicament delivery device as claimed in claim 9 ,
wherein the guide structure is arranged to cooperate with that part of the tamper evidence mechanism which is arranged on the medicament delivery member cover.

11. The medicament delivery device as claimed in claim 9 ,
wherein the guide structure comprises a groove arranged to receive a first shoulder of the tamper evidence mechanism.

12. The medicament delivery device as claimed in claim 11 ,
wherein the cap comprises a stop member.

13. The medicament delivery device as claimed in claim 12 ,
wherein the stop member and the inner flange defines a play (P) for the proximal end flange of the medicament delivery member deshielder.

14. The medicament delivery device as claimed in claim 13 ,
wherein the axial distance between the stop member and the inner flange is at least as large as the axial distance between the first shoulder abutment surface and a midpoint of the groove.

15. The medicament delivery device as claimed in claim 9 ,
wherein the guide structure comprises a rib, wherein the first shoulder of the tamper evidence mechanism is arranged to receive the rib.

16. The medicament delivery device as claimed in claim 1 ,
wherein the groove and the first shoulder define a snap fit.

17. The medicament delivery device as claimed in claim 1 , comprising a medicament delivery member deshielder which comprises a proximal end flange,
wherein the cap is arranged to receive the medicament delivery member deshielder.

18. The medicament delivery device as claimed in claim 17 ,
wherein the cap comprises an inner flange arranged to cooperate with proximal end flange of the medicament delivery member deshielder.

Assignees

• Carebay Europe Ltd
• Shl Medical Ag

Inventors

• Sall Daniel

Classifications

• A61M5/3213

  Caps placed axially onto the needle, e.g. equipped with finger protection guards (axially-extensible protective sleeves A61M5/3243) · CPC title

• A61M5/5086 Primary

  for indicating if defective, used, tampered with or unsterile · CPC title

• A61M5/3204

  Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices · CPC title

• A61M5/28

  Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle · CPC title

• A61M2005/3247

  Means to impede repositioning of protection sleeve from needle covering to needle uncovering position · CPC title