Fluid injection system for coronary intervention

• US 20020123716A1
• Filed: 03/01/2001
• Published: 09/05/2002
• Est. Priority Date: 03/01/2001
• Status: Active Grant

• Current Assignee: Navilyst Medical Incorporated (AngioDynamics, Inc.)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Hart, Colin P., Houde, Eric, VanDiver, Mark H., Delcourt, Thomas R., Martin, Kevin C.
• Granted Patent: US 7,044,933 B2
• Time in Patent Office: Days
• US Class Current: 604/65
• CPC Class Codes: A61M 2205/3561 local, e.g. within room or hospital
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2209/01 Remote controllers for specific apparatus
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons

Abstract

A fluid injection apparatus and method of injecting fluid are disclosed. The apparatus includes a control syringe electrically connected to a power-actuated syringe. A sensor is provided proximate the control syringe to monitor the position of the plunger therein, with a signal representative of plunger position then being communicated to a processor for calculation of a corresponding control signal. The control signal is received by an actuator of the power-actuated syringe to move the plunger of the power-actuated syringe in a manner related to movement of the control syringe. The control syringe is provided with a feedback device to provide the operator with an indication as to the pressure of the fluid being injected into a patient.

Claims

1. An injection apparatus, comprising:

a control syringe including a manually movable plunger;

a power syringe including a power-actuated plunger;

a processor;

a sensor operatively associated with the control syringe and transmitting a signal representative of control syringe plunger position to the processor, the processor generating a control signal based on the position signal and transmitting the control signal for movement of the power-actuated plunger; and

a feedback device in communication with the power syringe and the control syringe, the feedback device affecting the force required to manually move the plunger of the control syringe.

2. The injection apparatus of claim 1, wherein the power syringe includes an output connected to a catheter.

3. The injection apparatus of claim 1, further including a manifold disposed between the catheter and the output of the power syringe, the manifold including a plurality of inlets adapted to be placed in communication with injection fluids.

4. The injection apparatus of claim 3, wherein the feedback device includes a tee fitting having an inlet and first and second outlets, the inlet being connected to the power syringe, the first outlet being connected to an inlet of the manifold, the second outlet being connected to the outlet of the control syringe.

5. The injection apparatus of claim 1, further including a switch, the switch adapted to generate a signal actuating the power-operated plunger independently of the control syringe.

6. The injection apparatus of claim 5, wherein the switch includes a foot pedal.

7. The injection apparatus of claim 5, wherein the switch is provided on the control syringe.

8. The injection apparatus of claim 1, wherein the sensor of claim 1 is a linear position sensor.

9. The injection apparatus of claim 1, wherein the control syringe includes a cylinder having a smaller diameter than a cylinder of the power syringe.

10. The injection apparatus of claim 1, including an operator interface module, the processor forming a part of the operator interface module.

11. The injection apparatus of claim 10, wherein the operator interface module includes a counter adapted to track total injection volume.

12. The injection apparatus of claim 1, wherein the operator interface module is adapted to use an algorithm in generating the control signal, the algorithm including an adjustable parameter corresponding to injection volume ejected from the power syringe per stroke of the control syringe plunger.

13. The injection apparatus of claim 1, wherein the feedback device includes a pressure sensor operatively associated with the power syringe, the pressure sensor generating a signal indicative of fluid pressure expelled by the power syringe.

14. The injection apparatus of claim 13, wherein the feedback device includes an electromagnet disposed adjacent a fluid line extending from the control device, the electromagnet receiving the pressure signal.

15. The injection apparatus of claim 13, wherein the feedback device includes a solenoid valve operatively associated with a fluid line extending from the control device, the solenoid valve receiving the pressure signal.

16. The injection apparatus of claim 13, wherein the feedback device includes a pneumatic regulator operatively associated with a fluid line extending from the control device, the solenoid valve receiving the pressure signal.

18. The method of injecting fluid of claim 17, wherein the moving step includes the steps of sensing movement of the control syringe plunger, generating a signal representative of the degree of movement of the control syringe plunger, and communicating the signal to an actuator operatively associated with the plunger of the power-actuated syringe.

19. The method of injecting fluid of claim 17, wherein the providing step includes the steps of communicating the fluid within the output conduit of the power-actuated syringe to an output of the control syringe.

20. The method of injecting fluid of claim 17, further including the step of moving the power-actuated syringe independently of the control syringe.

21. The method of injecting fluid of claim 20, wherein the independently moving step is performed using a separate actuator switch connected to the power syringe actuator.

22. The method of injecting fluid of claim 21, wherein the separate actuator switch is a foot pedal.

23. The method of injecting fluid of claim 17, wherein the level of tactile feedback provided is adjustable.

24. The method of injecting fluid of claim 17, wherein the providing step includes the steps of sensing fluid pressure expelled from the control syringe and generating a magnetic field proximate an output of the control syringe.

25. The method of injecting fluid of claim 17, wherein the providing step includes the steps of sensing fluid pressure expelled from the control syringe and operating a valve operatively associated with an output of the control syringe.

26. The method of injecting fluid of claim 25, wherein the valve is a solenoid valve.

27. The method of injecting fluid of claim 25, wherein the valve is a pneumatic regulator.

29. The injection apparatus of claim 28, further including a feedback device adapted to provide the user with an indication as to the pressure of the fluid being injected by the power-actuated output device.

30. The injection apparatus of claim 28, wherein the input device is a syringe.

31. The injection apparatus of claim 29, further including a sensor adapted to generate a signal representative of plunger position within the input syringe.

32. The injection apparatus of claim 30, wherein the signal is received by the controller and wherein the controller generates a signal based on the sensor signal for control of the power-actuated output device.

33. The injection apparatus of claim 28, further including a jog switch connected to the power-actuated output device, the jog switch controlling the power-actuated output device independently of the input device.

34. The injection apparatus of claim 33, wherein the jog switch is a foot switch.

35. The injection apparatus of claim 28, wherein the feedback device increases the resistance to movement of the input device as the pressure of the fluid being injected increases.

37. The injection apparatus of claim 36, wherein the power syringe includes an output connected to a catheter.

38. The injection apparatus of claim 36, further including a manifold disposed between the catheter and the output of the power syringe, the manifold including a plurality of inlets adapted to be placed in communication with injection fluids.

39. The injection apparatus of claim 36, further including a switch, the switch adapted to generate a signal actuating the power-operated plunger independently of the control syringe.

40. The injection apparatus of claim 39, wherein the switch includes a foot pedal.

41. The injection apparatus of claim 39, wherein the switch is provided on the control syringe.

42. The injection apparatus of claim 36, wherein the sensor of claim 1 is a linear position sensor.

43. The injection apparatus of claim 36, wherein the control syringe includes a cylinder having a smaller diameter than a cylinder of the power syringe.

44. The injection apparatus of claim 36, including an operator interface module, the processor forming a part of the operator interface module.

45. The injection apparatus of claim 44, wherein the operator interface module includes a counter adapted to track total injection volume.

46. The injection apparatus of claim 36, wherein the operator interface module is adapted to use an algorithm in generating the control signal, the algorithm including an adjustable parameter corresponding to injection volume ejected from the power syringe per stroke of the control syringe plunger.

48. The method of injecting fluid of claim 47, wherein the moving step includes the steps of sensing movement of input device, generating a signal representative of the degree of movement of the input device, and communicating the signal to an actuator operatively associated with the power-actuated output device.

49. The method of injecting fluid of claim 47, further including the step of moving the power-actuated output device independently of the input device.

50. The method of injecting fluid of claim 49, wherein the independently moving step is performed using a separate actuator switch connected to the actuator of the power actuated output device.

51. The method of injecting fluid of claim 49, wherein the independent moving step is performed by actuating a foot switch.

17. A method of injecting fluid, comprising the steps of:

manually depressing a plunger of a control syringe;

moving a plunger of a power-actuated syringe in sequence with the control syringe plunger, movement of the power-actuated plunger increasing fluid pressure within a conduit connected to an output of the power-actuated syringe; and

providing tactile feedback to a user of the control syringe, the level of tactile feedback being related to the fluid pressure within the output conduit.

28. An injection apparatus, comprising:

a power-actuated output device adapted to inject fluid into a patient;

an input device manipulable by a user;

a controller adapted to move the power-actuated output device in accordance with the input device.

36. An injection apparatus, comprising:

a control syringe including a manually movable plunger;

a power syringe including a power-actuated plunger;

a processor; and

a sensor operatively associated with the control syringe and transmitting a signal representative of control syringe plunger position to the processor, the processor generating a control signal based on the position signal and transmitting the control signal for movement of the power-actuated plunger.

47. A method of injecting fluid, comprising the steps of:

manually operating an input device;

moving a power-actuated output device in sequence with the input device, movement of the power-actuated output device increasing fluid pressure within a conduit connected to an output of the power-actuated output device and injecting fluid contained therein.