Angiographic injector system and method of use

• US 20030018252A1
• Filed: 06/14/2002
• Published: 01/23/2003
• Est. Priority Date: 04/20/1995
• Status: Active Grant

• Current Assignee: Douglas J. Duchon, James P. Smith, Jiyan Liu, Katherine H. Anderson, Robert F. Wilson
• Original Assignee: Douglas J. Duchon, James P. Smith, Jiyan Liu, Katherine H. Anderson, Robert F. Wilson
• Inventors: Smith, James P., Wilson, Robert F., Duchon, Douglas J., Anderson, Katherine H., Liu, Jiyan
• Granted Patent: US 7,128,729 B2
• Time in Patent Office: Days
• US Class Current: 600/432
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61B 6/548 Remote control of the apparatus or devices
• CPC Class Codes: A61M 2205/3561 local, e.g. within room or hospital
• CPC Class Codes: A61M 2209/01 Remote controllers for specific apparatus
• CPC Class Codes: A61M 2230/04 Heartbeat characteristics, e.g. ECG, blood pressure modulation
• CPC Class Codes: A61M 5/001 Apparatus specially adapted for cleaning or sterilising syringes or needles
• CPC Class Codes: A61M 5/14216 Reciprocating piston type
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: Y10S 128/01 Motorized syringe
• CPC Class Codes: Y10S 128/12 Pressure infusion

Abstract

An angiographic injector system and a method of controllably delivering medical fluid to a patient from an angiographic injector system are disclosed. A multiple processor control system is used to actively control the injection process and to monitor sensed functions of the system. The multiple processors provide dual redundancy safety circuits for critical control functions such as syringe motor drive speed and current. A motor/servo-amplifier nested control function is also disclosed. A unique method and apparatus are disclosed for establishing injection parameter default values just prior to an injection procedure that are based on physiological values of the patient to be treated. The injector system uses an interactive display panel that presents sequenced set-up screens to the user and which enables the user to select injection procedures, parameters and other modes of operation directly through the interactive panel.

Claims

1. A method for injection of medical fluid into a patient, comprising:

providing an angiographic injection machine;

selecting an injection procedure from a plurality of different injection procedures;

entering at least one patient value into the machine prior to an injection;

calculating within the machine at least one injection parameter in response to said entered patient value and said selected injection procedure; and

displaying said calculated injection parameter to a user of the machine prior to the injection.

2. The method of claim 1, further including entering said calculated injection parameter into the machine as a default value for said injection parameter, usable by the machine in performing an injection.

3. The method of claim 2, further including performing an injection with the machine, using said entered injection parameter.

4. The method of claim 2, wherein the step of entering said calculated injection parameter is performed automatically after the parameter has been calculated.

5. The method of claim 1, wherein said patient value is weight.

6. The method of claim 1, wherein said injection parameter is injection flow rate of said medical fluid.

7. The method of claim 1, wherein said injection parameter is volume of said medical fluid.

8. The method of claim 1, wherein said injection parameter is rise time of injection flow rate of said medical fluid.

9. The method of claim 1, wherein said injection parameter is a pressure limit of said medical fluid.

10. The method of claim 1 wherein said injection procedure is a left coronary procedure.

11. The method of claim 1 wherein said injection procedure is a right coronary procedure.

12. The method of claim 1 wherein said injection procedure is a left ventricle/aorta procedure.

14. The injector system of claim 13, further including:

a connecting device operatively connected with said calculating device and with said control device for delivering said patient related injection parameter to said control device, wherein said control device controls said injecting device at least partially in response to said patient related injection parameter.

15. The injection system of claim 13, wherein said input signal corresponds to patient weight.

16. The injection system of claim 13, wherein said patient related injection parameter is injection flow rate of said medical fluid.

17. The injection system of claim 13, wherein said patient related injection parameter is volume of said medical fluid.

18. The injection system of claim 13, wherein said patient related injection parameter is rise time of injection flow rate of said medical fluid.

19. The injection system of claim 13, wherein said patient related injection parameter is a pressure limit of said medical fluid.

20. The apparatus of claim 13 wherein said injection algorithms comprise left coronary injection algorithms.

21. The apparatus of claim 13 wherein said injection algorithms comprise right coronary injection algorithms.

22. The apparatus of claim 13 wherein said injection algorithms comprise left ventricle/aorta injection algorithms.

13. An angiographic injector system, comprising:

a device for injecting a medical fluid into a patient;

an input device suitable for receiving an input signal corresponding to a patient physiological value and for providing a patient value signal in response thereto;

a calculating device storing a plurality of injection algorithms corresponding to a plurality of injection procedures, said calculating device operatively connected to receive said patient value signal, said calculating device capable of calculating at least one patient related injection parameter for a selected injection procedure based on said injection algorithms and said patient value signal;

a control device operatively connected with said injecting device for controllably causing said injecting device to inject said medical fluid in response to said at least one patient related injection parameter; and

a display device operatively connected with said calculating device for displaying said patient related injection parameter external of said injection system.