SHIELD FOR COVERING THE EXTREMITY OF AN ADMINISTRATION DEVICE OR ASSEMBLY, AN ADMINISTRATION ASSEMBLY AND AN ADMINISTRATION DEVICE

• US 20080215013A1
• Filed: 02/27/2008
• Published: 09/04/2008
• Est. Priority Date: 03/02/2007
• Status: Abandoned Application

• Current Assignee: Becton Dickinson France (Becton Dickinson & Co)
• Original Assignee: Becton Dickinson France (Becton Dickinson & Co)
• Inventors: Felix-Faure, Catherine
• Application Number:
  US12/038,197
• Publication Number:
  US 20080215013A1
• Time in Patent Office: Days
• US Class Current: 604/192
• CPC Class Codes: A61M 2005/3118 via the distal end of a syringe, i.e. syringe end for mounting a needle cannula
• CPC Class Codes: A61M 5/3202 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 Class Codes: A61M 5/3213 Caps placed axially onto the needle, e.g. equipped with finger protection guards axially-extensible protective sleeves A61M5/3243

Abstract

The invention relates to a shield (1) for covering at least part of a needle (2) and needle hub (6) of a needle assembly, said shield (1) having an open proximal end (1a), a closed distal end (1b) and a longitudinal wall (4) extending from said proximal end (1a) to said distal end (1b) and defining an interior cavity (5) for receiving at least part of the needle (2) and needle hub (6), characterized in that it comprises at least a first retainer (9) defined on said wall (4) and extending into said cavity (5) and, at least one second retainer (8) defined on said wall (4) and extending into said cavity (5), said annular bead portion (9) and second retainer (8) being designed to be able to, resiliently and releasably, engage a part of said needle assembly to secure said shield (3) thereto, said first retainer (9) and second retainer (8) having at least their shape or one of their dimensions different from the other. The invention also relates to a needle assembly and to an injection device, each comprising such a shield.

Claims

1. A shield (1) for covering at least part of the extremity (6) of an administration device or of an assembly (20), said shield (1) having an open proximal end (1a), a closed distal end (1b) and a longitudinal wall (4) extending from said proximal end (1a) to said distal end (1b) and defining an interior cavity (5) for receiving at least part of the extremity (6) of the administration device or of the assembly (20), characterized in that it comprises at least a first retainer (9) defined on said wall (4) and extending into said cavity (5) and, at least one second retainer (8) defined on said wall (4) and extending into said cavity (5), said first retainer (9) and second retainer (8) being designed to be able to, resiliently and releasably, engage a part of said extremity of the administration device or assembly (20) to secure said shield (1) thereto, said first retainer (9) having at least its shape or one of its dimensions different from the shape or dimensions of said second retainer (8), said first retainer (9) and second retainer (8) resiliently and releasably engaging the same part of said extremity of the administration device or assembly (20).

2. A shield (1) according to claim 1, characterized in that said first retainer comprises at least a bead portion (9) that extends radially into said interior cavity (5) on a first predetermined distance Db, and said second retainer comprises at least a projection (8) that extends radially into said interior cavity (5) on a second predetermined distance Dp that is different than said first predetermined distance Db.

3. A shield (1) according to claim 1, characterized in that said first retainer extends longitudinally into said interior cavity (5) on a first predetermined length Hb, and said second retainer extends longitudinally into said interior cavity (5) on a second predetermined length Hp that is different than said first predetermined length Hb.

4. A shield (1) according to claim 1, characterized in that said first retainer or second retainer comprises a continuous annular bead (9).

5. A shield (1) according to claim 1, characterized in that it comprises at least two first retainers (9) and/or two second retainers (8).

6. A shield (1) according to claim 5, characterized in that each of the said two first retainers comprises a bead portion (9) and/or each of the said two second retainers comprises a projection (8), said bead portions (9) and said projections (8) being located in the same transversal planes and regularly spaced from each other.

7. A shield (1) according to claim 5, characterized in that said each of the said two first retainers comprises a bead portion (9) and/or each of the said two second retainers comprises a projection (8), said bead portions (9) and said projections (8) being located in different transversal planes.

8. A shield (1) according to claim 1, characterized in that at least one of said first retainer (9) or said second retainer (8) has a proximal face (11) forming a predetermined angle β

with the longitudinal axis of said shield (1).

9. A shield (1) according to claim 8, characterized in that said angle β

ranges from 35°

to 60°

.

10. A shield (1) according to claim 1, characterized in that at least one of said first retainer (9) or said second retainer (8) has a distal face (10) forming a predetermined angle α

with the longitudinal axis of said shield (1).

11. A shield (1) according to claim 10, characterized in that said angle α

ranges from 20°

to 40°

.

12. A shield (1) according to claim 1, characterized in that at least part of said shield (1) is made from an elastically deformable material and is contained within a shell (3) made at least in part from a rigid material.

13. A shield (1) according to claim 1, characterized in that at least one of said first retainer (9) and/or said second retainer (8) have a cross-sectional shape of half drop of water of which widest part faces the distal end (1b) of said shield (1).

14. A shield (1) according to claim 3, characterized in that said first retainer and/or second retainer (8, 9) define for said cavity (5) a predetermined geometric shape.

15. A shield (1) according to claim 14, characterized in that said predetermined geometric shape is chosen in the group comprising a square, a triangle, an oblong format, a cross, a star.

16. A shield (1) according to claim 1, characterized in that it further comprises:

an outer casing (120) formed of a first material;

an inner casing (130) formed of a second material different from the said first material, said inner casing (130) defining said interior cavity (5) for receiving, in an impermeable way, at least part of the extremity of the administration device (2) or of the assembly, and

aspiration limiting means (150) designed for limiting the deformation of said interior cavity (5) when said shield (1) is separated from the assembly (20).

17. A shield (1) according to claim 16, characterized in that said aspiration limiting means comprise bearing surfaces (150) designed for being in contact with said inner casing (130) and for cooperating with said inner casing (130) in order to limit the stretching of said inner casing (130) when said shield (1) is separated from the assembly (20).

18. An assembly (20) for an administration device (30), said assembly (20) comprising at least an assembly hub for assembling said assembly on said administration device, characterized in that it further comprises a shield (1) according to claim 1.

19. An administration device (30) comprising at least a container (7) and an extremity, characterized in that it further comprises a shield (1) according to claim 1 provided on said extremity.

20. A shield (1) according to claim 2, characterized in that said first retainer extends longitudinally into said interior cavity (5) on a first predetermined length Hb, and said second retainer extends longitudinally into said interior cavity (5) on a second predetermined length Hp that is different than said first predetermined length Hb.