Powerhead of a power injection system

• US 8,251,071 B2
• Filed: 04/14/2010
• Issued: 08/28/2012
• Est. Priority Date: 10/13/2004
• Status: Expired due to Fees

• Current Assignee: Liebel-Flarsheim Company (Mallinckrodt plc)
• Original Assignee: Mallinckrodt LLC (Mallinckrodt plc)
• Inventors: Neer, Charles S., Ziemba, Robert J., Brooks, David M., Small, James R.
• Primary Examiner(s): Lucchesi, Nicholas D
• Assistant Examiner(s): Flick, Jason
• Application Number:
  US12/759,805
• Publication Number:
  US 20110060217A1
• Time in Patent Office: 867 Days
• Field of Search: 604/96.01
• US Class Current: 128/898
• CPC Class Codes: A61B 6/548 Remote control of the apparatus or devices
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/3389 Continuous level detection A61M2205/3393 takes precedence
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/587 Lighting arrangements
• CPC Class Codes: A61M 2205/6054 Magnetic identification systems
• CPC Class Codes: A61M 2205/6063 Optical identification systems
• CPC Class Codes: A61M 5/007 for contrast media
• 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: 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 5/1785 comprising radioactive shield means syringe shields or holders for storage of radioactive sources G21F5/018

Abstract

A contrast media injection system includes detects the absolute position of the syringe ram using a non-contact sensor. A series of magnets and Hall-Effect sensors may be used or an opto-reflective system. Illuminated knobs that are connected to the drive mechanism for the syringe ram rotate with the drive and provide visual feedback on operation through the illumination. Analog Hall-Effect sensors are used to determine the presence or absence of magnets that identify the type of faceplate being used. The faceplates include control electronics, connected to the powerhead through connectors, which may be interchangeably used by the two faceplates. The faceplate electronics include detectors for automatically detecting the capacity of pre-filled syringes. Additional features include using historical data to provide optimum pressure limit values during an injection protocol, a removable memory device for storing and transferring information such as injection protocols and injector statistics, and password protection of such protocols.

Claims

1. A method of maintaining a contrast media injector system comprising a first remote console and a powerhead, said method comprising the steps of:

transferring data from said first remote console to said powerhead;

replacing said first remote console with a second remote console after said transferring step; and

transferring said data from said powerhead to said second remote console after said replacing step.

2. The method of claim 1, wherein said data comprises programs for automatic injection.

3. The method of claim 1, wherein said transferring step in relation to said first remote console comprises transferring said data from first remote console memory to powerhead memory.

4. The method of claim 3, wherein said transferring step in relation to said second remote console comprises transferring said data from said powerhead memory to second remote console memory.

5. The method of claim 1, wherein said transferring step in relation to said second remote console comprises transferring said data from powerhead memory to second remote console memory.

6. A method of maintaining a contrast media injector system comprising a remote console and a powerhead, said method comprising the steps of:

executing a first transferring step comprising transferring data from said powerhead to said remote console;

repairing said powerhead after said first transferring step; and

executing a second transferring step after said repairing step and comprising transferring said data from said remote console back to said powerhead.

7. The method of claim 6, wherein said data comprises calibration parameters.

8. The method of claim 6, wherein said first transferring step comprises transferring said data from powerhead memory to remote console memory.

9. The method of claim 8, wherein said second transferring step comprises transferring said calibration parameters from said remote console memory back to said powerhead memory.

10. The method of claim 9, wherein said repairing step comprises replacing a main circuit board of said powerhead.

11. The method of claim 8, wherein said repairing step comprises replacing a main circuit board of said powerhead.

12. The method of claim 6, wherein said repairing step comprises replacing a main circuit board of said powerhead.