Front-loading syringe adapter for front-loading medical injector

• US 6,676,634 B1
• Filed: 08/03/2000
• Issued: 01/13/2004
• Est. Priority Date: 03/29/1996
• Status: Expired due to Fees

• Current Assignee: Bayer Medical Care Inc. (Bayer AG)
• Original Assignee: Medrad Incorporated (Bayer AG)
• Inventors: Reilly, David M., Spohn, Michael A., Havrilla, Joseph B., Ashcraft, Robert J. Jr., Bowser, Craig John, Yarzebinski, Albert John, Pavlik, P. Eric
• Primary Examiner(s): Casler, Brian L.
• Assistant Examiner(s): RODRIGUEZ, CRIS LOIREN
• Application Number:
  US09/631,422
• Time in Patent Office: 1,258 Days
• Field of Search: 604/154, 604/131, 604/140, 604/141, 604/143, 604/151, 604/152, 604/187, 604/218, 604/155, 128/DIG.1
• US Class Current: 604/154
• 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

Abstract

The present syringe adapter (100), which permits use of syringes (40) of various types, sizes and configurations to be used with a front-loading injector (10), includes a removable injector face plate (120) having a releasable mounting mechanism (122a, 122b) for attaching the adapter face plate (120) to a front-load injector (10), a reducing sleeve (140) having a recess (190) for receiving the distal flange (44) of syringe (40), locking pivot arms (220, 240) pivotly attached to the reducing sleeve (140) to releasably engage syringe flange (44), and a piston extension (320) provided for extending the injector drive piston (16) for engagement with syringe plunger (46).

Claims

1. A syringe adapter for an injector comprising a drive piston and an injector face plate defining an opening therein through which the drive piston is extendable, the syringe adapter comprising:

an adapter face plate defining an adapter opening therein through which the drive piston is extendable to connect to a plunger of a syringe, the adapter face plate comprising;

at least one mounting device for attaching the adapter face plate to one of the injector face plate and the injector after the injector face plate is removed therefrom; and

an attachment mechanism for allowing the syringe to be removably mounted on the adapter face plate, the attachment mechanism comprising a base for receiving the syringe, a pair of pivoting arms attached to the base and movable from an opened position to a closed position to engage the syringe, and a locking member extending from the base to secure the pair of pivoting arms in the closed position after the syringe is received by the base.

2. The syringe adapter of claim 1, further comprising a piston adapter attachable to the drive piston for mating engagement with a plunger of a syringe.

3. The syringe of claim 2 wherein the piston adapter comprises a protrusion for attaching the piston adapter to the drive member.

4. The syringe adapter of claim 2 wherein the piston adapter comprises an attachment device for attaching the piston adapter to the syringe plunger.

5. The syringe adapter of claim 4 wherein the attachment device comprises threads.

6. The syringe adapter of claim 1, further comprising at least one signal generator to communicate with at least one sensor located in the injector to indicate that the adapter base is attached to the injector.

7. The syringe adapter of claim 1, further comprising at least one signal generator to communicate with at least one sensor located in the injector to automatically calibrate at least one operating parameter of the injector.

8. The syringe adapter of claim 1 wherein the at least one mounting device comprises at least one mounting ear.

9. The syringe adapter of claim 1 wherein the base comprises at least one recess for receiving at least one flange associated with the syringe.

10. The syringe adapter of claim 1, further comprising a gear mechanism to which the pair of pivoting arms is attached.

11. The syringe adapter of claim 10 wherein the gear mechanism permits simultaneous movement of the pivoting arms.

12. The syringe adapter of claim 1 wherein each of the pivoting arms comprises a first beveled surface to permit reception of the syringe when the pivoting arms are in the opened position.

13. The syringe adapter of claim 1 wherein each of the pivoting arms comprises a second beveled surface to engage the syringe when the pivoting arms are in the closed position.

14. The syringe adapter of claim 1 wherein each of the pivoting arms comprises an arm extension to assist in moving the pivoting arms.

15. A syringe adapter for an injector comprising a drive piston, at least one sensor and an injector face plate defining an opening therein through which the drive piston is extendable, the syringe adapter comprising:

an adapter face plate defining an adapter opening therein through which the drive piston is extendable to connect to a plunger of a syringe, the adapter face plate comprising;

at least one mounting device for attaching the adapter face plate to one of the injector face plate and the injector after the injector face plate is removed therefrom;

an attachment mechanism for allowing the syringe to be removably mounted on the adapter face plate, the attachment mechanism comprising a base for receiving the syringe, a pair of pivoting arms attached to the base and movable from an opened position to a closed position to engage the syringe, and a locking member extending from the base to secure the pair of pivoting arms in the closed position after the syringe is received by the base; and

at least one signal generator operable to communicate with the at least one sensor located in the injector to automatically calibrate at least one operating parameter of the injector.

16. The syringe adapter of claim 15, further comprising a piston adapter attachable to the drive piston for mating engagement with a plunger of a syringe.

17. The syringe adapter of claim 16 wherein the piston adapter comprises a protrusion for attaching the piston adapter to the drive member.

18. The syringe adapter of claim 16 wherein the piston adapter comprises an attachment device for attaching the piston adapter to the syringe plunger.

19. The syringe adapter of claim 18 wherein the attachment device comprises threads.

20. The syringe adapter of claim 15 wherein the at least one mounting device comprises at least one mounting ear.

21. The syringe adapter of claim 15 wherein the base comprises at least one recess for receiving at least one flange associated with the syringe.

22. The syringe adapter of claim 15, further comprising a gear mechanism to which the pair of pivoting arms is attached.

23. The syringe adapter of claim 22 wherein the gear mechanism permits simultaneous movement of the pivoting arms.

24. The syringe adapter of claim 15 wherein each of the pivoting arms comprises a first beveled surface to permit reception of the syringe when the pivoting arms are in the opened position.

25. The syringe adapter of claim 15 wherein each of the pivoting arms comprises a second beveled surface to engage the syringe when the pivoting arms are in the closes position.

26. The syringe adapter of claim 15 wherein each of the pivoting arms comprises an arm extension to assist in moving the pivoting arms.

27. A syringe adapter for mounting a syringe comprising a plunger to an injector comprising a drive piston, at least one sensor and an injector face plate defining an opening therein having at least one recess and at least one protrusion and through which the drive piston is extendable, the syringe adapter comprising:

an adapter face plate defining an adapter opening therein through which the drive piston is extendable, the adapter face plate comprising;

at least one mounting ear for attaching the adapter face plate to the injector face plate, the at least one mounting ear operable to be inserted into the at least one recess and then rotated into engagement with the at least one protrusion to attach the adapter face plate to the injector face plate;

an attachment mechanism for removably mounting the syringe on the adapter face plate; and

at least one device adapted to cooperate with the at least one sensor on the injector when the adapter face plate is attached to the injector face plate.

28. The syringe adapter of claim 27 wherein the attachment mechanism comprises a base for receiving the syringe, a pair of pivoting arms attached to the base and movable from an opened position to a closed position to engage the syringe, and a locking member extending from the base to secure the pair of pivoting arms in the closed position after the syringe is received by the base.

29. The syringe adapter of claim 28 wherein the base defines at least one recess for receiving at least one flange associated with the syringe.

30. The syringe adapter of claim 28, further comprising a gear mechanism to which the pair of pivoting arms is attached.

31. The syringe adapter of claim 30 wherein the gear mechanism permits simultaneous movement of the pivoting arms.

32. The syringe adapter of claim 28 wherein each of the pivoting arms comprises a first beveled surface to permit reception of the syringe when the pivoting arms are in the opened position.

33. The syringe adapter of claim 28 wherein each of the pivoting arms comprises a second beveled surface to engage the syringe when the pivoting arms are in the closed position.

34. The syringe adapter of claim 28 wherein each of the pivoting arms comprises an arm extension to assist in moving the pivoting arms.

35. The syringe adapter of claim 27 wherein the at least one device cooperates with the at least one sensor to indicate that the adapter face plate is attached to the injector.

36. The syringe adapter of claim 27 wherein the at least one device cooperates with the at least one sensor to calibrate at least one operating parameter of the injector.

37. The syringe adapter of claim 36 wherein the at least one operating parameter comprises one or more of flow rate and pressure.

38. The syringe adapter of claim 27 wherein the at least one device comprises a plurality of devices and the at least one sensor comprises a plurality of sensors.

39. The syringe adapter of claim 27 wherein the at least one device comprises a magnetic device and the at least one sensor comprises a magnetic sensor.

40. The syringe adapter of claim 27 wherein the at least one device comprises a detent.

41. The syringe adapter of claim 27 wherein the at least one device comprises a signal generator.

42. The syringe adapter of claim 27, further comprising a piston adapter attachable to the drive piston for mating engagement with the plunger of the syringe.

43. The syringe adapter of claim 42 wherein the piston adapter comprises a protrusion for attaching the piston adapter to the drive member.

44. The syringe adapter of claim 42 wherein the piston adapter comprises an attachment device for attaching the piston adapter to the syringe plunger.

45. The syringe adapter of claim 44 wherein the attachment device comprises threads.

46. The syringe adapter of claim 27 wherein the at least one device is disposes on a distal surface of the adapter face plate.

47. The syringe adapter of claim 27 wherein the at least one device is disposes on the at least one mounting device.

48. The syringe adapter of claim 27 wherein the at least one mounting ear comprises two mounting ears, the at least one recess comprises two recesses and the at least one protrusion comprises two protrusions, and further wherein each of the two mounting ears is operable to be inserted into a respective one of the two recesses and then rotated into engagement with a respective one of the two protrusions to attach the adapter face plate to the injector face plate.

49. The syringe adapter of claim 48 wherein the two mounting ears are positioned in substantially opposes relationship to each another.

50. The syringe adapter of claim 27 wherein the attachment mechanism comprises a base for receiving the syringe.

51. The syringe adapter of claim 50 wherein the base defines at least one recess for receiving at least one flange associated with the syringe.

52. The syringe adapter of claim 27 wherein the at least one mounting ear comprises two mounting ears.

53. The syringe adapter of claim 27 wherein the at lease one mounting ear comprises two mounting ears positioned in substantially opposed relationship to each other.