Syringe interfaces for variable size syringes and syringe drive including such syringe interfaces

• US 20030045789A1
• Filed: 09/03/2002
• Published: 03/06/2003
• Est. Priority Date: 09/05/2001
• Status: Active Grant

• Current Assignee: Bayer Healthcare LLC (Bayer AG)
• Original Assignee: Medrad Incorporated (Bayer AG)
• Inventors: Parks, Robert, Reilly, David M., Goodworth, Matthew, Thompson, Jeffrey John, Degentesh, Drew, Beale, Matthew
• Granted Patent: US 7,192,417 B2
• Time in Patent Office: Days
• US Class Current: 600/407
• 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

A syringe interface for attaching syringes to a drive mechanism which includes a drive member to impart motion to a syringe plunger includes a plurality of syringe mount apertures having different dimensions to attach each of a plurality of syringes to the syringe interface. Each of the syringes for attachment to the syringe interface includes at least one mounting flange, and each of the plurality of syringes has a different mounting flange dimension. Each of the plurality of syringe mount apertures is in general alignment with an axis of the drive member. A syringe drive mechanism includes a syringe interface as described above. The syringe drive mechanism can further include a sensing system to sense which size of the plurality of syringes is mounted on the syringe interface. The syringe drive mechanism can also include a processor and a memory which are in operative communication with the drive member. The memory includes a control program stored therein. The processor is in communication with the sensing system so that the control program controls the drive member according to the syringe sensed to be attached to the syringe interface. A powered injector includes a drive member and a drive to deliver power to the drive member. A processor of the powered injector is in communication with the drive and with a memory in which at least one control program is stored. The control program includes instructions for control of the drive. The powered injector further includes a syringe interface as described above for attaching syringes to the powered injector so that the drive member can impart motion to a plunger slidably positioned within each of the syringes. The powered injector further includes a sensing system to detect which of the syringes is attached to the syringe interface. The sensing system is in communication with the processor so that the control program controls the drive in a manner determined by the syringe detected to be attached to the syringe interface.

Claims

1. A syringe interface for attaching syringes to a drive mechanism including a drive member, each of the syringes including at least one mounting flange, the syringe interface including a plurality of syringe mount apertures having different dimensions to attach each of a plurality of syringes to the syringe interface, each of the plurality of syringes having a different mounting flange dimension, each of the plurality of syringe mount apertures being in general alignment with an axis of the drive member.

2. The syringe interface of claim 1 wherein each of the syringe mounts apertures of the syringe interface includes at least one retaining flange, the retaining flange of each syringe mount aperture projecting radially inwardly to a different radial position.

3. The syringe interface of claim 1 wherein each syringe mount aperture includes a set of a plurality of retaining flanges, each set of retaining flanges extending radially inwardly to create a unique aperture dimension, each syringe mount aperture further including at least one mounting slot between the retaining flanges to allow passage of each mounting flange on one of the syringes therethrough, the mounting flanges on the syringe being rotatable relative to the retaining flanges of the syringe mount aperture to be positioned in abutting cooperation with the retaining flanges of the syringe mount aperture.

4. The syringe interface of claim 3 wherein each set of retaining flanges includes two retaining flanges positioned generally opposite of each other, two generally opposing mounting slots being positioned between the retaining flanges of each set of retaining flanges to cooperate with two generally opposing mounting flanges on one of the syringes.

5. The syringe interface of claim 4 wherein at least one of set of retaining flanges is movable in an axial direction relative to another set of retaining flanges.

6. The syringe interface of claim 5 including a first inner set of retaining flanges for cooperation with a first syringe and a second outer set of retaining flanges for cooperation with a second syringe, the second syringe having a diameter larger than the first syringe, the first inner set of retaining flanges being movable in an axial direction when contacted by the second syringe to allow the second syringe to move rearward to cooperate with the second outer set of retaining flanges.

7. The syringe interface of claim 6 wherein the first inner set of retaining flanges is biased in an axial forward position.

8. The syringe interface of claim 3 wherein each set of retaining flanges is positioned at a different axial position, the aperture dimension created by each of the sets of retaining flanges decreasing when moving axially rearward.

9. The syringe interface of claim 1 including a generally cone-shaped threaded flange to cooperate with a corresponding threaded flange on each of the plurality of syringes.

10. The syringe interface of claim 1 including a plurality of retention members, each retention member including a retaining flange on one end thereof, the retention members being movable to adjust the radial position of the retaining flanges to cooperate with and retain each of the plurality of syringes.

11. The syringe interface of claim 10 wherein each retention member is rotatable in a plane generally parallel to an axis of the syringe.

12. The syringe interface of claim 10 wherein each retention member is rotatable in a plane generally parallel to the radius of the syringe.

13. A syringe interface for attaching each of a plurality of syringes of different size to a drive mechanism, the syringe interface including a plurality of syringe mounts positioned on the syringe interface about a common point corresponding generally to an axis of the drive member of the drive mechanism, each of the plurality of syringe mounts cooperating with one of the of the syringes to attach the syringe to the syringe interface.

14. A syringe interface for attaching each of a plurality of syringes of different size to a drive mechanism, the syringe interface including a plurality of movable flange members positioned on the syringe interface, the flange members being movable to different radial positions to cooperate with mounting flanges on each of the syringes.

15. A syringe drive mechanism including a drive member and a syringe interface for attaching syringes to the syringe drive mechanism, each of the syringes including at least one mounting flange, the syringe interface including a plurality of syringe mount apertures having different dimensions to attach each of a plurality of syringes to the syringe interface, each of the plurality of syringes having a different mounting flange dimension, each of the plurality of syringe mount apertures being in general alignment with an axis of the drive member.

16. The syringe drive mechanism of claim 15 wherein each of the syringe mounts apertures of the syringe interface includes at least one retaining flange, the retaining flange of each syringe mount aperture projecting radially inwardly to a different radial position.

17. The syringe drive mechanism of claim 15 wherein each syringe mount aperture includes a set of a plurality of retaining flanges, each set of retaining flanges extending radially inwardly to create a unique aperture dimension, each syringe mount aperture further including at least one mounting slot between the retaining flanges to allow passage of each mounting flange on one of the syringes therethrough, the mounting flanges on the syringe being rotatable relative to the retaining flanges of the syringe mount aperture to be positioned in abutting cooperation with the retaining flanges of the syringe mount aperture.

18. The syringe drive mechanism of claim 17 wherein each set of retaining flanges includes two retaining flanges positioned generally opposite of each other, two generally opposing mounting slots being positioned between the retaining flanges of each set of retaining flanges to cooperate with two generally opposing mounting flanges on one of the syringes.

19. The syringe drive mechanism of claim 18 wherein at least one of set of retaining flanges is movable in an axial direction relative to another set of retaining flanges.

20. The syringe drive mechanism of claim 19 including a first inner set of retaining flanges for cooperation with a first syringe and a second outer set of retaining flanges for cooperation with a second syringe, the second syringe having a diameter larger than the first syringe, the first inner set of retaining flanges being movable in an axial direction when contacted by the second syringe to allow the second syringe to move rearward to cooperate with the second outer set of retaining flanges.

21. The syringe drive mechanism of claim 20 wherein the first inner set of retaining flanges is biased in an axial forward position.

22. The syringe drive mechanism of claim 17 wherein each set of retaining flanges is positioned at a different axial position, the aperture dimension created by each of the sets of retaining flanges decreasing when moving axially rearward.

23. The syringe drive mechanism of claim 15 including a generally cone-shaped threaded flange to cooperate with a corresponding threaded flange on each of the plurality of syringes.

24. The syringe drive mechanism of claim 15 including a plurality of retention members, each retention member including a retaining flange on one end thereof, the retention members being movable to adjust the radial position of the retaining flanges to cooperate with and retain each of the plurality of syringes.

25. The syringe drive mechanism of claim 24 wherein each retention member is rotatable in a plane generally parallel to an axis of the syringe.

26. The syringe drive mechanism of claim 24 wherein each retention member is rotatable in a plane generally parallel to the radius of the syringe.

27. The syringe drive mechanism of claim 15 further including a sensing system to sense which size of the plurality of syringes is mounted on the syringe interface.

28. The syringe drive mechanism of claim 27 further including a processor and a memory in operative communication with the drive member, the memory including a control program stored therein, the processor being in communication with the sensing system so that the control program controls the drive member according to the syringe sensed to be attached to the syringe interface.

29. A powered injector including a drive member, a drive to deliver power to the drive member, a processor in communication with the drive, the processor also being in communication with a memory in which at least one control program is stored, the control program including instructions for control of the drive, the powered injector further including a syringe interface for attaching syringes to the powered injector so that the drive member can impart motion to a plunger slidably positioned within each of the syringes, each of the syringes including at least one mounting flange, the syringe interface including a plurality of syringe mount apertures having different dimensions to attach each of a plurality of syringes to the syringe interface, each of the plurality of syringes having a different mounting flange dimension, each of the plurality of syringe mount apertures being in general alignment with an axis of the drive member, the powered injector further including a sensing system to detect which of the syringes is attached to the syringe interface, the sensing system being in communication with the processor so that the control program controls the drive in a manner determined by the syringe detected to be attached to the syringe interface.

30. The powered injector of claim 29 wherein each of the syringe mounts apertures of the syringe interface includes at least one retaining flange, the retaining flange of each syringe mount aperture projecting radially inwardly to a different radial position.

31. The powered injector of claim 29 wherein each syringe mount aperture includes a set of a plurality of retaining flanges, each set of retaining flanges extending radially inwardly to create a unique aperture dimension, each syringe mount aperture further including at least one mounting slot between the retaining flanges to allow passage of each mounting flange on one of the syringes therethrough, the mounting flanges on the syringe being rotatable relative to the retaining flanges of the syringe mount aperture to be positioned in abutting cooperation with the retaining flanges of the syringe mount aperture.

32. The powered injector of claim 31 wherein each set of retaining flanges includes two retaining flanges positioned generally opposite of each other, two generally opposing mounting slots being positioned between the retaining flanges of each set of retaining flanges to cooperate with two generally opposing mounting flanges on one of the syringes.

33. The powered injector of claim 32 wherein at least one of set of retaining flanges is movable in an axial direction relative to another set of retaining flanges.

34. The powered injector of claim 33 including a first inner set of retaining flanges for cooperation with a first syringe and a second outer set of retaining flanges for cooperation with a second syringe, the second syringe having a diameter larger than the first syringe, the first inner set of retaining flanges being movable in an axial direction when contacted by the second syringe to allow the second syringe to move rearward to cooperate with the second outer set of retaining flanges.

35. The powered injector of claim 34 wherein the first inner set of retaining flanges is biased in an axial forward position.

36. The powered injector of claim 31 wherein each set of retaining flanges is positioned at a different axial position, the aperture dimension created by each of the sets of retaining flanges decreasing when moving axially rearward.

37. The powered injector of claim 29 including a generally cone-shaped threaded flange to cooperate with a corresponding threaded flange on each of the plurality of syringes.

38. The powered injector of claim 29 including a plurality of retention members, each retention member including a retaining flange on one end thereof, the retention members being movable to adjust the radial position of the retaining flanges to cooperate with and retain each of the plurality of syringes.

39. The powered injector of claim 38 wherein each retention member is rotatable in a plane generally parallel to an axis of the syringe.

40. The powered injector of claim 38 wherein each retention member is rotatable in a plane generally parallel to the radius of the syringe.

41. A method of operating a powered injector including a syringe interface for removably attaching a plurality of syringes to the injector, the syringe interface including a common passage through which a drive member of the injector can communicate with a plunger slidably disposed within each of the syringes, the method including the steps:

attaching a first syringe having a first diameter to the syringe interface using a first mounting aperture on the syringe interface, the first mounting aperture being generally aligned with the common passage;

removing the first syringe from the syringe interface; and

attaching a second syringe having a second diameter different from the first syringe diameter to the syringe interface using a second mounting aperture of the syringe interface, the second mounting aperture being generally aligned with the common passage.

42. The method of claim 41 wherein the syringe interface includes a plurality of syringe mounts positioned on the syringe interface about the common passage, each of the plurality of syringe mounts having a different mounting aperture.

43. The method of claim 41 wherein the syringe interface includes a plurality of movable flange members positioned on the syringe interface, the flange members being movable to different radial positions to create different mounting apertures.

44. The method of claim 41 further including the step of sensing which syringe is attached to the syringe interface.

45. The method of claim 44 further including the step of communicating information of the configuration of the attached syringe sensed to be attached to the syringe interface to a processor of the injector, and controlling the drive member in an injection procedure with the processor in a manner determined by the configuration of the attached syringe.