Front load pressure jacket system with syringe holder

• US RE37,487 E1
• Filed: 07/07/2000
• Issued: 12/25/2001
• Est. Priority Date: 08/25/1995
• Status: Expired due to Term

• Current Assignee: Bayer Medical Care Inc. (Bayer AG)
• Original Assignee: Medrad Incorporated (Bayer AG)
• Inventors: Uber, Arthur E. III, Reilly, David M., Hirschman, Alan D.
• Primary Examiner(s): KENNEDY, SHARON E
• Application Number:
  US09/612,539
• Time in Patent Office: 536 Days
• Field of Search: 604/131, 604/134, 604/140, 604/143, 604/151, 604/152, 604/154, 604/155, 604/218, 604/227, 604/228, 604/232, 604/233, 600/432, 128/DIG.1, 128/655, 222/390, 222/391, 222/327
• US Class Current: 604/131
• CPC Class Codes: A61M 2005/14553 comprising a pressure jacket
• 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: B05C 17/01 with manually mechanically or electrically actuated piston or the like B05C17/00533 takes precedence
• CPC Class Codes: Y10S 128/01 Motorized syringe

Abstract

The pressure jacket systems of the invention are used to permit the front loading and removal of a syringe from an injector and include a first jacket segment and a second jacket segment surrounding the exterior surface of the syringe, interior surfaces conformable to the exterior surface of the syringe, a mechanism which allows movement of the first jacket segment in relation to the second jacket segment to permit insertion and removal of the syringe from the pressure jacket, and a mechanism for securing the first and second jacket segments in a fixed relationship upon insertion of the syringe.

Claims

1. Fluid injection apparatus for injecting fluid from a syringe including a rear end and an opening formed therein a front end having a syringe neck, and a plunger disposed in the syringe the fluid injection apparatus comprising:

an injector head having a housing and a front opening in said housing for connection to said rear end of said syringe, drive means extendible through said front opening and through said opening in said rear end of the syringe for imparting motive force to said syringe plunger; and

a pressure jacket for holding the syringe to the injector head, the pressure jacket including;

a jacket cylinder having an open front end for receiving the syringe, and a rear end coupled to the injector head;

a first tie rod having a front end, and a rear end pivotally attached to said injector head;

a second tie rod having a front end, and a rear end pivotally attached to said injector head;

a front retaining plate joined to said front ends of said first and second tie rods, said retaining plate and said tie rods pivotable between a closed position for holding the syringe within said jacket cylinder and an open position to allow the insertion and removal of the syringe from said jacket cylinder.

2. The injection apparatus of claim 1 wherein said front retaining plate includes an opening formed therein to permit said syringe neck to protrude therethrough when said plate and said tie rods are in said closed position.

3. The injection apparatus of claim 2 wherein said opening of said front retaining plate is a slot formed from a lateral margin of said plate through a center thereof, said slot formed in the direction of pivot of said retaining plate and tie rods.

4. The injection apparatus of claim 1 wherein said injector head further includes an annular collar and said rear ends of said tie rods are pivotally affixed to said annular collar.

5. Fluid injection apparatus for injecting fluid from a syringe including a rear end and an opening formed therein, a front end having a syringe neck, and a plunger disposed in the syringe, the fluid injection apparatus comprising:

an injector head having a housing and a front opening in said housing for connection to said rear end of said syringe, drive means extendible through said front opening and through said opening in said rear end of the syringe for imparting motive force to said syringe plunger; and

a pressure jacket for holding the syringe to the injector head, the pressure jacket including;

a jacket cylinder having an open front end for receiving the syringe and a rear end coupled to the injector head by a first coupling attachment;

at least one arm member having a front end, and a rear end coupled to the injector head by a second coupling attachment; and

a front retaining plate attached to the front end of the arm member;

wherein at least one of the first coupling attachment and the second coupling attachment is a pivot means for permitting relative angular movement between the jacket cylinder and the arm member.

6. A fluid injection apparatus for use with a syringe, the fluid injection apparatus comprising:

7. The fluid injection apparatus of claim 6 wherein the retaining member defines an opening therein to permit at least a portion of the syringe to protrude therethrough when the retaining member and the arm members are in the closed position.

8. The fluid injection apparatus of claim 7 wherein the at least a portion of the syringe comprises at least a neck portion of the syringe.

9. The fluid injection apparatus of claim 7 wherein the opening defined in the retaining member comprises a slot formed from a lateral margin of the retaining member through a center thereof.

10. The fluid injection apparatus of claim 6, further comprising an annular collar associated with the housing, the rear ends of the arm members being associated with the annular collar.

11. The fluid injection apparatus of claim 6 wherein the first and second arm members comprise tie rods.

12. The fluid injection apparatus of claim 6 wherein the retaining member comprises a retaining plate.

13. The fluid injection apparatus of claim 6 wherein the front ends of the arm members are associated with the retaining member at substantially opposed ends thereof.

14. A fluid injection apparatus for use with a syringe, the fluid injection apparatus comprising:

15. The fluid injection apparatus of claim 14 wherein the second coupling connection comprises a pivoting mechanism, and further wherein the at least one arm member and the retaining member are movable between a closed position for retaining the syringe within the jacket cylinder and an open position for allowing the insertion and removal of the syringe from the jacket cylinder.

16. The fluid injection apparatus of claim 14 wherein the first coupling connection comprises a pivoting mechanism, and further wherein the jacket cylinder is movable between a closed position for retaining the syringe within the jacket cylinder and an open position for allowing the insertion and removal of the syringe from the jacket cylinder.

17. The fluid injection apparatus of claim 14 wherein both of the first and second coupling connections comprise pivoting mechanisms, and further wherein the jacket cylinder, the at least one arm member and the retaining member are movable between a closed position for retaining the syringe within the jacket cylinder and an open position for allowing the insertion and removal of the syringe from the jacket cylinder.

18. The fluid injection apparatus of claim 14 wherein the retaining member defines an opening therein to permit at least a portion of the syringe to protrude therethrough when the retaining member is in the closed position.

19. The fluid injection apparatus of claim 18 wherein the at least a portion of the syringe comprises at least a neck portion of the syringe.

20. The fluid injection apparatus of claim 18 wherein the opening defined in the retaining member comprises a slot formed from a lateral margin of the retaining member through a center thereof.

21. The fluid injection apparatus of claim 14, further comprising an annular collar associated with the housing, the rear end of the at least one arm member being associated with the annular collar.

22. The fluid injection apparatus of claim 14 wherein the retaining member comprises a retaining plate.

23. The fluid injection apparatus of claim 14 wherein the at least one arm member comprises two arm members.

24. A fluid injection apparatus for use with a syringe, the fluid injection apparatus comprising:

25. The fluid injection apparatus of claim 24 wherein the retaining member defines an opening therein to permit at least a portion of the syringe to protrude therethrough when the retaining member is in the closed position.

26. The fluid injection apparatus of claim 25 wherein the at least a portion of the syringe comprises at least a neck portion of the syringe.

27. The fluid injection apparatus of claim 25 wherein the opening defined in the retaining member comprises a slot formed from a lateral margin of the retaining member through a center thereof.

28. The fluid injection apparatus of claim 24, further comprising an annular collar associated with the housing, the rear end of the at least one arm member being associated with the annular collar.

29. The fluid injection apparatus of claim 24 wherein the retaining member comprises a retaining plate.

30. The fluid injection apparatus of claim 24 wherein the at least one arm member comprises two arm members.

31. The fluid injection apparatus of claim 24 wherein the at least one arm member comprises a tie rod.

32. A method of mounting a syringe on an injector, the method comprising:

33. The method of claim 32, further comprising:

34. The method of claim 33, further comprising:

35. The method of claim 32 wherein the at least one arm member comprises two arm members.

36. A method of mounting a syringe on an injector, the method comprising:

37. The method of claim 36, further comprising:

38. The method of claim 37, further comprising:

39. The method of claim 36 wherein the second coupling connection comprises a pivoting mechanism, and further wherein the at least one arm member and the retaining member are movable between a closed position for retaining the syringe within the jacket cylinder and an open position for allowing the insertion and removal of the syringe from the jacket cylinder.

40. The method of claim 36 wherein the first coupling connection comprises a pivoting mechanism, and further wherein jacket cylinder is movable between a closed position for retaining the syringe within the jacket cylinder and an open position for allowing the insertion and removal of the syringe from the jacket cylinder.

41. The method of claim 36 wherein both of the first and second coupling connections comprise pivoting mechanisms, and further wherein the jacket cylinder, the at least one arm member and the retaining member are movable between a closed position for retaining the syringe within the jacket cylinder and an open position for allowing the insertion and removal of the syringe from the jacket cylinder.

42. The method of claim 36 wherein the at least one arm member comprises two arm members.