Power Injector Syringe Assembly

• US 20110251485A1
• Filed: 08/11/2010
• Published: 10/13/2011
• Est. Priority Date: 08/13/2009
• Status: Active Grant

• Current Assignee: Mallinckrodt Incorporated (Mallinckrodt plc)
• Original Assignee: Mallinckrodt Incorporated (Mallinckrodt plc)
• Inventors: Horton, Duane L., La Valle, Felicia M., Martz, Kevin R.
• Granted Patent: US 8,628,495 B2
• Time in Patent Office: Days
• US Class Current: 600/432
• CPC Class Codes: A61B 6/548 Remote control of the apparatus or devices
• CPC Class Codes: A61M 2005/14553 comprising a pressure jacket
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/1458 Means for capture of the plunger flange

Abstract

A power injector syringe assembly (110) is disclosed. The power injector syringe assembly (110) includes a power injector syringe (112) and coupling (130) that are permanently joined. The coupling (130) includes a wedge-shaped mounting flange (144) to facilitate installation of the assembly (110) on a syringe mount (200) of a power injector. The coupling (130) also includes at least one coupling member (150) to facilitate removal of the assembly (110) from the syringe mount (200).

Claims

1. A power injector syringe assembly, comprising:

a power injector syringe comprising a syringe barrel, a syringe flange, and a plunger, wherein said plunger is moveable relative to said syringe barrel and comprises a plunger head disposed within said syringe barrel;

a coupling detachably connectable to a power injector syringe mount, wherein said syringe flange is disposed within an interior of said cowling with said syringe barrel extending beyond said coupling; and

a retention ring, wherein said coupling is mounted to said power injector syringe using said retention ring, and wherein said retention ring engages said syringe flange within said interior of said coupling.

3. The power injector syringe assembly of claim 1, wherein said coupling is permanently joined to said power injector syringe.

4. The power injector syringe assembly of claim 3, wherein a permanent connection between said coupling and said power injector syringe is selected from the group consisting of RF welding, sonic welding, adhesive bonding, heat staking, ultrasonic welding, a snap fit connection, an interference fit, mechanical fasteners, or any combination thereof.

7. The power injector syringe assembly of claim 1, wherein said coupling is disposed on an end of said power injector syringe.

8. The power injector syringe assembly of claim 1, wherein said retention ring comprises a first portion disposed within said coupling and a second portion disposed beyond an end of said coupling.

9. The power injector syringe assembly of claim 1, wherein said coupling and said retention ring are separately positioned relative to said power injector syringe.

10. The power injector syringe assembly of claim 1, wherein said coupling and said retention ring interface with opposing surfaces of said syringe flange of said power injector syringe within said interior of said coupling.

11. The power injector syringe assembly of claim 1, wherein said coupling, said retention ring, and said power injector syringe are permanently joined.

12. The power injector syringe assembly of claim 1, wherein said coupling comprises a power injector end, a syringe end, an opening that extends between said power injector end and said syringe end, and a syringe flange seat located between said power injector end and said syringe end within said opening, wherein one end surface of said syringe flange of said power injector syringe is seated against said syringe flange seat, and wherein an opposite end surface of said syringe flange is engaged by said retention ring.

13. The power injector syringe assembly of claim 12, wherein said retention ring is disposed about said syringe barrel within said opening of said coupling.

14. The power injector syringe assembly of claim 1, wherein said coupling is of an integral construction.

15. The power injector syringe assembly of claim 1, wherein said coupling lacks any moving part.

16. The power injector syringe assembly of claim 1, wherein said coupling comprises a coupling flange.

17. The power injector syringe assembly of claim 16, wherein said coupling flange is annular.

18. The power injector syringe assembly of claim 16, wherein said coupling flange comprises a fixed outer diameter.

19. The power injector syringe assembly of claim 16, wherein a perimeter of said coupling flange defines a maximum outer diameter of said coupling.

20. The power injector syringe assembly of claim 16, wherein said coupling flange is of an integral construction.

22. The power injector syringe assembly of claim 16, wherein a maximum thickness of said coupling flange is within a range of about 0.010″

to about 0.020″

.

24. The power injector syringe assembly of claim 16, wherein said coupling further comprises first and second cylindrical sections disposed on opposite sides of said coupling flange.

25. The power injector syringe assembly of claim 24, wherein said first and second cylindrical sections extend from said coupling flange in opposite directions, wherein said first cylindrical section is on a power injector side of said coupling flange, and wherein said second cylindrical section is on a power injector syringe side of said coupling flange.

26. The power injector syringe assembly of claim 25, wherein said first and second cylindrical sections have different outer diameters.

28. The power injector syringe assembly of claim 25, further comprising:

at least one mounting flange on a perimeter of said coupling, wherein said first cylindrical section extends from said coupling flange to said at least one mounting flange.

30. The power injector syringe assembly of claim 28, wherein an outer diameter of said at least one mounting flange increases proceeding in the direction of said coupling flange.

36. The power injector syringe assembly of claim 1, wherein said coupling further comprises at least one mounting flange,

37. The power injector syringe assembly of claim 16, wherein said coupling further comprises at least one mounting flange that is spaced from said coupling flange.

38. The power injector syringe assembly of claim 36, wherein said at least one mounting flange comprises a wedge-shaped cross-section.

39. The power injector syringe assembly of claim 36, wherein said coupling comprises a power injector end that is opposite of said power injector syringe, wherein an outer diameter of said at least one mounting flange increases proceeding in a direction away from said power injector end.

40. The power injector syringe assembly of claim 36, wherein said at least one mounting flange comprises a cam.

41. A power injector, comprising:

the power injector syringe assembly of claim 36, wherein said coupling further comprises a first coupling member;

a syringe plunger driver comprising a motorized drive source; and

a syringe mount comprising a syringe retainer and an syringe retainer actuator, wherein said syringe retainer actuator interacts with said syringe retainer and comprises a second coupling member, wherein said at least one mounting flange engages and expands said syringe retainer during installation of said power injector syringe assembly to said syringe mount, wherein said first and second coupling members are engageable, and wherein rotation of said power injector syringe assembly while said first and second coupling members are engaged expands said syringe retainer to allow said power injector syringe assembly to be removed from said syringe mount.

42. The power injector of claim 41, wherein said syringe retainer actuator comprises a rotatable ring, that in turn comprises a first camming member.

43. The power injector of claim 42, wherein said second coupling member comprises a plurality of grooves disposed about an inner wall of said rotatable ring, and wherein said first coupling member comprises at least one projection on a perimeter of said coupling.

44. The power injector of claim 41, wherein said power injector syringe assembly is moved along an axis coinciding with said syringe plunger driver to install said power injector syringe assembly to said syringe mount.

2. (canceled)

5-6. -6. (canceled)

21. (canceled)

23. (canceled)

27. (canceled)

29. (canceled)

31-35. -35. (canceled)