Piercing Member Protection Device

• US 20100004602A1
• Filed: 07/01/2008
• Published: 01/07/2010
• Est. Priority Date: 07/01/2008
• Status: Active Grant

• Current Assignee: Carmel Pharma AB (Becton Dickinson & Co)
• Original Assignee: Carmel Pharma AB (Becton Dickinson & Co)
• Inventors: Nord, Lars, Horppu, Petri
• Granted Patent: US 8,075,550 B2
• Time in Patent Office: Days
• US Class Current: 604/198
• CPC Class Codes: A61M 5/1626 Needle protectors therefor in combination with syringes A61M5/3202; protectors for sharps A61B50/3001

Abstract

The present invention relates to a piercing member protection device (9) which comprises a first, a second and a third cylindrical member (100, 200, 300). The first cylindrical member (100) is at least partly encompassed by the second cylindrical member (200), and the second cylindrical member (200) is at least partly encompassed by the third cylindrical member (300). The third cylindrical member (300) comprises a piercing member (400) having a piercing tip (401). A first locking arrangement (250) is arranged to enable or prevent the turning of the first and third cylindrical member, with respect to the second cylindrical member, while a second locking arrangement (350) is arranged to enable or prevent movement of the piercing member (400) along the longitudinal centre axis A, so as to expose the piercing tip (401) of the piercing member (400). The piercing member protection device (9) provides a safe device which reduces the risk of accidental exposure of the piercing tip (401) and contamination for a user.

Claims

1. A piercing member protection device comprising a longitudinal centre axis,

said piercing member protection device comprises a first member with a first and a second end,

said first member is at least partly encompassed by a second member having a first and a second end, said second member is in turn at least partly encompassed by a third member having a first and a second end,

said first member is arranged with connection means for connection to a first connection port,

which piercing member protection device is arranged to accommodate a piercing member comprising a piercing tip, which extends along said longitudinal centre axis and is directly or indirectly attached to said third member,

wherein said first member comprises a protection chamber to protect at least said piercing tip of said piercing member,

said piercing member and said piercing tip are further movable between a secured position in which said piercing tip is enclosed by said protection chamber so as to prevent said piercing tip of said piercing member from exposure, and an unsecured position, in which said piercing tip of said piercing member is exposed outside said protection chamber and said first member,

said third member is further arranged to turn with respect to said second member between a locked position and an unlocked position so that when said third member is in said locked position said piercing member is substantially unable to move along said longitudinal centre axis and when said third member is in said unlocked position said piercing member is enabled to move along said longitudinal centre axis.

wherein said piercing member protection device further comprises a first locking arrangement comprising at least one deformable bias flange, said first locking arrangement has a locked position and an unlocked position, wherein when said first locking arrangement is in said locked position, said first member is prevented from turning with respect to said second member, and when said first locking arrangement is in said unlocked position, said first member is permitted to turn with respect to said second member, wherein said locked position is arranged to be altered to said unlocked position by deforming said at least one deformable bias flange by bringing the piercing member protection device into contact with said first connection port.

2. The piercing member protection device according to claim 1, wherein said first locking arrangement comprises at least one deformable bias flange provided with a locking flange, and at least one cavity.

3. The piercing member protection device according to claim 2, wherein said at least one deformable bias flange is arranged on said second member and said cavity is arranged on said first member.

4. The piercing member protection device according to claim 3, said deformable bias flange is arranged to bias said locking flange towards said first member, and when said first locking arrangement is in said locked position, towards said at least one cavity.

5. The piercing member protection device according to claim 4, wherein said second member comprises a first and a second deformable bias flange arranged at said first end of said second member.

6. The piercing member protection device according to claim 5, wherein said first and second deformable bias flanges are connected to said second member at a first and a second connection point and in that said first and second deformable bias flanges extends between said first and second connection points.

7. The piercing member protection device according to claim 6, wherein said first and second deformable bias flanges have a substantially crescent-like form which extends between said first and second connection points.

8. The piercing member protection device according to claim 7, wherein said first and second locking flanges protrude out from substantially the centre section of said crescent formed first and second deformable bias flanges.

9. The piercing member protection device according to claim 2, wherein said at least one deformable bias flange is arranged at an angle (α

) with respect to a line transversal to said longitudinal centre axis, said transversal line being parallel with said first end of said second member.

10. The piercing member protection device according to claim 9, wherein said angle (α

) is between 10-30°

.

11. The piercing member protection device according to claim 2, wherein said at least one locking flange comprises a proximal end, which is connected to said at least one deformable bias flange and a distal end, intended to be engaged with said cavity when said first locking arrangement is in said locked position.

12. The piercing member protection device according to claim 11, wherein said distal end of said at least one locking flange has at least one hook element, to improve the engagement of said at least one locking flange with said at least one cavity.

13. The piercing member protection device according to claim 1, wherein said piercing member is arranged to be connected to said third member, and in that said third member is arranged to slide along said longitudinal centre axis, with respect to said second member, between said secured position and said unsecured position.

14. The piercing member protection device according to claim 13, wherein said second end of said third member comprises connection means for connection to a second connection port.

15. The piercing member protection device according to claim 1, wherein said first member is connected to said third member, so that said first member can be turned by means of said third member.

16. The piercing member protection device according to claim 1, wherein said first, second and third members are cylindrical members.

17. A piercing member protection device comprising a longitudinal centre axis,

said piercing member protection device comprises a first member with a first and a second end and an inner and outer surface, said first member having a protection chamber for preventing the exposure of at least a piercing tip of a piercing member,

said first member has a second member with a first and a second ends and an inner and outer surface, wherein said first and second end of said second member are arranged between said first and second ends of said first member,

said first and second members are at least partly encompassed by a third member, said third member comprises a piercing member comprising a piercing tip and extending along said longitudinal centre axis, said third member is movable along the longitudinal centre axis so that said piercing tip of said piercing member can move between an exposed position, at which said piercing tip is exposed outside said protection chamber and an unexposed position, in which said piercing tip is inside said protection chamber,

and wherein said piercing member protection device has a first and a second locking arrangement, in which said first locking arrangement is arranged to prevent said first member from turning with respect to said second member,

and that said second locking arrangement is arranged to prevent said third member from movement along said longitudinal centre axis.

18. The piercing member protection device according to claim 17, wherein said first locking arrangement comprises at least one deformable bias flange comprising a locking flange arranged on said second member, said at least one deformable bias flange biasing said locking flange towards said first member.

19. The piercing member protection device according to claim 17, wherein said first, second and third members are cylindrical members.