Power injector with flow rate assessment

• US 8,500,677 B2
• Filed: 11/19/2008
• Issued: 08/06/2013
• Est. Priority Date: 11/20/2007
• Status: Expired due to Fees

• Current Assignee: Liebel-Flarsheim Company (Mallinckrodt plc)
• Original Assignee: Mallinckrodt LLC (Mallinckrodt plc)
• Inventors: Lafferty, Sean B., Wagner, Gary S.
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): CHANDER, DIVA KAKAR
• Application Number:
  US12/742,943
• Publication Number:
  US 20100274182A1
• Time in Patent Office: 1,721 Days
• Field of Search: 604 65- 71, 604/118, 604/121, 604/151
• US Class Current: 604/67
• CPC Class Codes: A61M 2005/14208 with a programmable infusion control system, characterised by the infusion program
• CPC Class Codes: A61M 2005/14553 comprising a pressure jacket
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/16804 Flow controllers
• CPC Class Codes: A61M 5/16886 for measuring fluid flow rate, i.e. flowmeters
• CPC Class Codes: A61M 5/20 Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically A61M5/142 , A61M5/46 take precedence; hypodermic projectiles F42B12/54

Abstract

A flow rate assessment protocol (140) that may be utilized by a power injector (10) is disclosed. This flow rate assessment protocol (140) monitors a flow rate (156) during execution of a medical fluid delivery protocol (154). This monitored flow rate is compared with a target flow rate (158). A comparative output of this monitored flow rate and target flow rate is displayed (160), for instance on a graphical user interface (11).

Claims

1. A method of operation for a medical fluid delivery system, the method comprising the steps of:

discharging medical fluid from said medical fluid delivery system in accordance with a phase of a fluid delivery protocol, wherein said phase is configured to deliver a programmed volume of said medical fluid at a programmed target flow rate; and

displaying a first output, wherein said first output comprises a numerical comparison between a current flow rate of said discharging step and said target flow rate, wherein said numerical comparison comprises a single number, and wherein said discharging step is executed in an attempt to provide said target flow rate.

2. The method of claim 1, wherein said discharging step comprises discharging said medical fluid from a power injector.

3. The method of claim 1, wherein said discharging step comprises injecting said medical fluid into a fluid target.

4. The method of claim 3, wherein said fluid target comprises a patient.

5. The method of claim 1, wherein said displaying step comprises displaying said first output on at least one graphical user interface.

6. The method of claim 1, wherein said displaying step is executed only when said current flow rate differs from said target flow rate by more than a predetermined amount.

7. The method of claim 1, wherein said displaying step is continuously executed throughout said discharging step.

8. The method of claim 1, wherein said displaying step comprises expressing said current flow rate as a percentage of said target flow rate.

9. The method of claim 1, wherein said displaying step comprises displaying a differential between said current flow rate and said target flow rate.

10. The method of claim 1, wherein said displaying step comprises conveying information as to how said current flow rate differs from said target flow rate.

11. The method of claim 1, further comprising the step of:

issuing a message that conveys that said discharging step is failing to comply with said target flow rate.

12. The method of claim 1, further comprising the step of:

changing said discharging step if said current flow rate differs from said target flow rate in a predetermined manner.

13. The method of claim 12, further comprising the step of:

inputting said predetermined manner.

14. The method of claim 12, wherein said discharging step uses a power injector, and wherein said method further comprises the step of:

allowing operator input of said predetermined manner.

15. The method of claim 12, further comprising the step of:

executing a first prompting step comprising prompting an entry of said predetermined manner on at least one graphical user interface.

16. The method of claim 15, further comprising the step of:

executing a second prompting step comprising prompting an entry of said target flow rate on at least one graphical user interface.

17. The method of claim 1, further comprising the step of:

terminating said discharging step if said current flow rate is less than a predetermined percentage of said target flow rate.

18. The method of claim 1, further comprising the step of:

terminating said discharging step if said current flow rate is less than said target flow rate by a predetermined value.

19. A method of operation for a medical fluid delivery system, the method comprising the steps of:

discharging medical fluid from said medical fluid delivery system in accordance with a phase of a fluid delivery protocol, wherein said phase is configured to deliver a programmed volume of said medical fluid at a programmed target flow rate; and

displaying a first output, wherein said first output comprises a numerical comparison between a current flow rate of said discharging step and said target flow rate, wherein said discharging step is executed in an attempt to provide said target flow rate, and wherein said displaying step is executed only when said current flow rate differs from said target flow rate by more than a predetermined amount.

20. A method of operation for a medical fluid delivery system, the method comprising the steps of:

discharging medical fluid from said medical fluid delivery system in accordance with a phase of a fluid delivery protocol, wherein said phase is configured to deliver a programmed volume of said medical fluid at a programmed target flow rate; and

displaying a first output, wherein said first output comprises a numerical comparison between a current flow rate of said discharging step and said target flow rate, wherein said discharging step is executed in an attempt to provide said target flow rate, and wherein said displaying step comprises expressing said current flow rate as a percentage of said target flow rate.

21. A method of operation for a medical fluid delivery system, the method comprising the steps of:

discharging medical fluid from said medical fluid delivery system in accordance with a phase of a fluid delivery protocol, wherein said phase is configured to deliver a programmed volume of said medical fluid at a programmed target flow rate;

displaying a first output, wherein said first output comprises a numerical comparison between a current flow rate of said discharging step and said target flow rate, and wherein said discharging step is executed in an attempt to provide said target flow rate; and

terminating said discharging step if said current flow rate is less than a predetermined percentage of said target flow rate.