MEDICAL FLUID INJECTOR DEVICE

• US 20130030290A1
• Filed: 04/04/2011
• Published: 01/31/2013
• Est. Priority Date: 04/06/2010
• Status: Active Grant

• Current Assignee: Nemoto Kyorindo Company Limited
• Original Assignee: Nemoto Kyorindo Company Limited
• Inventors: Nemoto, Shigeru
• Granted Patent: US 9,675,749 B2
• Time in Patent Office: Days
• US Class Current: 600/432
• 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 provided by a plurality of medical fluids and capable of simply setting injection conditions for the mixed medical fluid. A medical fluid injector (100) includes an injector head (110) injecting a diluted contrast medium into a patient and a controller unit (50). The controller unit (50) performs a process of receiving an input relating to an injection rate of the diluted medical fluid, a process of receiving an input relating to a mixture ratio by an operator, a process of calculating an injection rate of a contrast medium based on the mixture ratio, and a process of calculating an injection rate of physiological saline based on the mixture ratio. The injector head (110) 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 for injecting a patient with a mixed medical fluid provided by mixing a first medical fluid and a second medical fluid;

a controller unit having a monitor and screens for programming an injection condition for the mixed medical fluid displayed on the monitor, wherein the controller unit performs;

a process of receiving an input relating to an injection rate of the mixed medical fluid;

a process of receiving an input relating to a mixture ratio or a mixture factor between the first medical fluid and the second medical fluid performed by an operator;

a process of calculating the injection rate of the first medical fluid based on said input mixture ratio or mixture factor;

a process of calculating the injection rate of the second medical fluid based on said input mixture ratio or mixture factor, wherein

the injector head injects the first medical fluid at the calculated injection rate of the first medical fluid and the second medical fluid at the calculated injection rate of the second medical fluid.

2. The medical fluid injector device according to claim 1, wherein the monitor is of a touch panel type, and

in the process of receiving an input relating to a mixture ratio or mixture factor, an image button for changing the mixture ratio or mixture factor is displayed on the monitor, and the mixture ratio or mixture factor is changed by the operator moving his fingertip or an input pen while he touches the image button with his fingertip or the input pen.

3. The medical fluid injector device according to claim 1, wherein the controller unit further performs:

a process of receiving an input relating the volume of mixed medical fluid;

a process of calculating the volume of the first medical fluid based on the input mixture ratio or mixture factor; and

a process of calculating the volume of the second medical fluid based on the input mixture ratio or mixture factor.

4. The medical fluid injector device according to claim 1, wherein the controller further performs:

a process of receiving a change, made by the operator, relating to the mixture ratio or mixture factor during injection of the mixed medical fluid;

a process of calculating an injection rate of the first medical fluid based on the new mixture ratio or mixture factor; and

a process of calculating an injection rate of the second medical fluid based on the new mixture ratio or mixture factor, and

the injector head injects the first medical fluid and the second medical fluid at the calculated new injection rate of the first medical fluid and the calculated new injection rate of the second medical fluid, respectively.

5. The medical fluid injector device according to claim 3, wherein the controller unit further performs a process of displaying the injection rate of the mixed medical fluid and the injection volume of the mixed medical fluid on the monitor.

6. The medical fluid injector device according to claim 5, wherein, when a predetermined image button displayed on the monitor is pressed, the controller unit performs a process of displaying, on the monitor:

the calculated injection rate and the calculated volume of the first medical fluid; and

the calculated injection rate and the calculated volume of the second medical fluid.

7. The medical fluid injector device according to claim 1, wherein the controller unit includes a voice input function, to allow the operator to input a mixture ratio or mixture factor by voice.