Safety device for a medicament container

Patent metadata

Field	Value
Publication number	US-2016206831-A1
Application number	US-201414914759-A
Country	US
Kind code	A1
Filing date	Aug 27, 2014
Priority date	Aug 29, 2013
Publication date	Jul 21, 2016
Grant date	—

Abstract

Described is a safety device ( 30 ) for a medicament container ( 20 ) comprising a first sheath ( 31 ) having a first ledge ( 35 ) and a second ledge ( 36 ), a second sheath ( 32 ) telescopically arranged with the first sheath and releasably coupled to the first ledge ( 35 ), and a finger flange ( 50, 500 ) having at least one resilient clip ( 72 ) adapted to engage the second ledge ( 36 ) first sheath ( 31 ).

First claim

1 . A safety device ( 30 ) for a medicament container ( 20 ) comprising:
a first sheath ( 31 ) having a first ledge ( 35 ) and a second ledge ( 36 ); a second sheath ( 32 ) telescopically arranged with the first sheath and releasably coupled to the first ledge ( 35 ); and a finger flange ( 50 , 500 ) having at least one resilient clip ( 72 ) adapted to engage the second ledge ( 36 ) of the first sheath ( 31 ).

2 . The safety device ( 30 ) of claim 1 , wherein the resilient clip ( 72 ) comprises a transverse beam ( 72 . 1 ) extending in a radial inward direction (I), a longitudinal beam ( 72 . 2 ) extending from the transverse beam ( 72 . 1 ) in a proximal direction (P), a hook comprising a slope surface ( 72 . 3 ) and a block surface ( 72 . 4 ) extending from the longitudinal beam ( 72 . 2 ) in the radial inward direction (I), wherein during insertion of the outer ledge ( 36 ) in a distal direction (D) the second ledge ( 36 ) engages the slope surface ( 72 . 3 ) increasingly deflecting the resilient clip ( 72 ) in a radial outward direction (O), wherein, after the second ledge ( 36 ) has passed the slope surface ( 72 . 3 ) the resilient clip ( 72 ) relaxes and the second ledge ( 36 ) engages the block surface ( 72 . 4 ) preventing the second ledge ( 36 ) from returning in the proximal direction (P).

3 . The safety device of claim 2 , wherein the transverse beam ( 72 . 1 ) comprises a hinge ( 72 . 1 . 1 ) in the shape of a a section with a reduced thickness compared to the rest of the transverse beam ( 72 . 1 ).

4 . The safety device of claim 3 , wherein the hinge ( 72 . 1 . 1 ) has a thickness of approximately 30% to 70%, in particular 40% to 60% of the thickness of the rest of the transverse beam ( 72 . 1 ).

5 . The safety device of any one of the preceding claims, wherein a protrusion ( 71 . 3 ) is arranged on one of the finger flange ( 50 ) and the first sheath ( 31 ), the protrusion ( 71 . 2 ) arranged to engage a recess in the other one of the finger flange ( 50 ) and the first sheath ( 31 ) so as to limit relative rotation between the first sheath ( 31 ) and the finger flange ( 50 ).

6 . The safety device ( 30 ) according to any one of the preceding claims, wherein the finger flange ( 50 , 500 ) comprises a hole ( 70 ) adapted to receive the first sheath ( 31 ).

7 . The safety device ( 30 ) according to claim 6 , wherein the finger flange ( 50 , 500 ) comprises a central recess ( 71 ) disposed adjacent to the hole ( 70 ) adapted to recieve the second ledge ( 36 ).

8 . The safety device ( 30 ) according to any one of the preceding claims, wherein the finger flange ( 50 , 500 ) comprises a retaining wall ( 71 . 2 ) adapted to abut the second ledge ( 36 ).

9 . The safety device ( 30 ) according to claim 8 , wherein the retaining wall ( 71 . 2 ) abuts an entire periphery of the second ledge ( 36 ).

10 . The safety device ( 30 ) according to one of the claims 6 to 9 , wherein the finger flange ( 50 , 500 ) comprises at least one lateral recess ( 73 ) disposed adjacent the hole ( 70 ).

11 . The safety device ( 30 ) according to any one of the preceding claims, wherein the finger flange ( 50 , 500 ) comprises a central portion ( 52 , 502 ) and at least one support portion ( 51 , 501 ) extending radially from the central portion ( 52 , 502 ).

12 . The safety device ( 30 ) according to claim 11 , wherein the at least one support portion ( 51 , 501 ) includes a support surface ( 53 , 503 ), and wherein the support surface ( 53 , 503 ) is made from a first material and the support portion ( 51 , 501 ) is made from a second material, and wherein the first material has a lower durometer than the second material.

13 . The safety device ( 30 ) according to claim 11 or 12 , wherein the support surface ( 53 , 503 ) includes one or more frictional features.

14 . The safety device ( 30 ) according to one of the claim 12 or 13 , wherein the support surface ( 53 ) is formed by overmolding or by two-shot injection molding.

15 . The safety device ( 30 ) according to any one of the claims 6 to 14 , wherein a radial distance (R) between an outer radial surface ( 54 ) and an outer diameter of the hole ( 70 ) is approximately 20 mm.

16 . The safety device ( 30 ) according to any one of the claims 11 to 15 , wherein the central portion ( 52 ) comprises a substantially flat proximal surface and a concave distal surface.

17 . The safety device ( 30 ) according to claim 16 , wherein the at least one support portion ( 51 , 501 ) comprises a substantially flat proximal surface and a concave distal surface.

18 . The safety device ( 30 ) according to any one of claims 11 to 15 , wherein the central portion ( 52 ) comprises a substantially flat proximal surface and a substantially flat distal surface.

19 . The safety device ( 30 ) according to claim 18 , wherein the at least one support portion ( 51 , 501 ) comprises a concave proximal surface and a concave distal surface.

20 . A medicament delivery device ( 10 ) comprising:
a medicament container ( 20 ); and a safety device ( 30 ) according to any one of the preceding claims.

Assignees

• Sanofi Sa

Inventors

• Darras David
• Canepa Fabien
• Serre Bruno
• Mazzolini Jacky

Classifications

• A61M5/3202

  Devices for protection of the needle before use, e.g. caps (A61M5/50 takes precedence; for infusion spikes A61M5/1626; protectors for sharps A61B50/3001) · CPC title

• A61M2005/3247

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

• A61M5/3243 Primary

  being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel (devices for protecting guide needles in combination with catheters A61M25/0612) · CPC title

• A61M2005/3264

  Trigger provided at the proximal end, i.e. syringe end opposite to needle mounting end · CPC title

• A61M2205/586

  Ergonomic details therefor, e.g. specific ergonomics for left or right-handed users · CPC title