Medical fluid injector device

• US 9,675,749 B2
• Filed: 04/04/2011
• Issued: 06/13/2017
• Est. Priority Date: 04/06/2010
• Status: Active Grant

• Current Assignee: Nemoto Kyorindo Company Limited
• Original Assignee: Nemoto Kyorindo Company Limited
• Inventors: Nemoto, Shigeru
• Primary Examiner(s): Mehta, Bhisma
• Assistant Examiner(s): Darb, Hamza
• Application Number:
  US13/639,657
• Publication Number:
  US 20130030290A1
• Time in Patent Office: 2,262 Days
• Field of Search: 700 28, 604890, 604246, 604 401, 6048901, 604 30, 604 31, 604 65, 604 66, 604131, 600431
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2205/60 with identification means
• 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

Abstract

A medical fluid injector device injecting a patient with a mixed medical fluid and capable of simply setting injection conditions for the mixed medical fluid. A medical fluid injector includes an injector head injecting a diluted contrast medium into a patient and a controller unit. The controller unit receives an input relating to an injection rate of the diluted medical fluid receives an input relating to a mixture ratio by an operator, calculates an injection rate of a contrast medium based on the mixture ratio, and calculates an injection rate of physiological saline based on the mixture ratio. The injector head injects the contrast medium and the physiological saline at the calculated injection rate of the contrast medium and the calculated injection rate of the physiological saline, respectively.

Claims

1. A medical fluid injector device, comprising:

an injector head which injects a mixed medical fluid comprising a first medical fluid and a second medical fluid into a patient; and

a controller unit operably connected to the injector head, wherein the controller unit comprises a monitor on which a graphical user interface for changing an injection condition is displayed, wherein the monitor consists of components for displaying images and responding to touch input,

wherein the controller unit is configured to;

display a current mixture factor of the mixed medical fluid;

display the graphical user interface, comprising a window that includes (i) a mixture factor display portion extending vertically and consisting of a plurality of segment images, (ii) a plurality of mixture factor numerals displayed on a side of the mixture factor display portion, (iii) a slider icon for changing the mixture factor, and a numeric key pad for changing the mixture factor, wherein each mixture factor numeral is displayed at a position that divides the mixture factor display portion into 1;

N−

1, wherein N is the mixture factor, and wherein the graphical user interface further includes an image which shows the current mixture factor;

receive an input for changing the current mixture ratio or mixture factor by an operator via the graphical user interface; and

recalculate an injection rate of the first medical fluid and the second medical fluid based on a new mixture factor.

2. The medical fluid injector device of claim 1, wherein the plurality of segment images are colored and aligned.

3. The medical fluid injector device of claim 2, wherein each segment image serves as an icon for changing the mixture factor by selecting one of the segment images.

4. The medical fluid injector device of claim 1, wherein the controller unit displays the window when an icon on the monitor is selected.

5. The medical fluid injector device of claim 1, further comprising a first syringe for a first contrast medium.

6. The medical fluid injector device of claim 5, further comprising a second syringe for saline or a second contrast medium.