Pharmaceutical injection device, method for controlling pharmaceutical injection device, and recording medium

Patent metadata

Field	Value
Publication number	US-9943647-B2
Application number	US-201214349913-A
Country	US
Kind code	B2
Filing date	Oct 5, 2012
Priority date	Oct 7, 2011
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A pharmaceutical injection device comprises a main body case ( 2 ); a pharmaceutical syringe mounting component ( 3 ) that is provided inside the main body case ( 2 ) and onto which a pharmaceutical syringe ( 4 ) is mounted; a piston ( 5 ) provided movably with respect to the pharmaceutical syringe ( 4 ) mounted onto the pharmaceutical syringe mounting component ( 3 ); a drive mechanism ( 6 ) for driving the piston ( 5 ); a memory ( 46 ) that stores a preset pharmaceutical injection schedule; and a controller ( 7 ) that resets a current pharmaceutical dose by comparing a planned cumulative pharmaceutical dose, which is a planned cumulative amount of pharmaceutical injected up to the last time on the basis of the pharmaceutical injection schedule stored in the memory, and an actual cumulative pharmaceutical dose, which is a cumulative amount of pharmaceutical actually injected up to the last time.

First claim

The invention claimed is:

1. A pharmaceutical injection device, comprising:
a main body case that has an opening through which an injection needle is inserted and retracted;
a pharmaceutical syringe mounting component that is provided inside the main body case and onto which a pharmaceutical syringe is mounted;
a piston that is provided movably with respect to the pharmaceutical syringe mounted onto the pharmaceutical syringe mounting component;
a drive mechanism that drives the piston;
a display component that displays information related to the injection of a pharmaceutical;
a memory that is provided inside the main body case and stores a preset pharmaceutical injection schedule to use up all of the pharmaceutical, the preset pharmaceutical injection schedule being set beforehand to divide a pharmaceutical into a plurality of injections; and
a controller that is electrically connected to the drive mechanism, the display component, and the memory,
wherein the controller resets a current or future pharmaceutical dose automatically to allocate a differential dose to a current or future pharmaceutical dose so as not to exceed a maximum correction amount
when, in an injection of the pharmaceutical, the controller determines there is a difference by comparing a planned cumulative pharmaceutical dose, which is a planned cumulative amount of pharmaceutical injected up to a last time on the basis of the preset pharmaceutical injection schedule stored in the memory, with an actual cumulative pharmaceutical dose, which is a cumulative amount of pharmaceutical actually injected up to the last time, and when the absolute value of the differential dose is at or under an allowable divergence.

2. The pharmaceutical injection device according to claim 1 ,
wherein when the controller determines that the actual cumulative pharmaceutical dose is short of the planned cumulative amount of pharmaceutical dose, the controller resets a current or future pharmaceutical dose to a dose greater than a planned amount of the pharmaceutical to be injected on the basis of the preset pharmaceutical injection schedule so as to compensate the shortage until the differential dose is at or under the maximum correction amount, or
wherein when the controller determines the actual cumulative pharmaceutical dose is in excess of the planned cumulative amount of pharmaceutical dose, the controller resets a current or future pharmaceutical dose to a dose less than a planned amount of pharmaceutical to be injected on the basis of the preset pharmaceutical injection schedule so as to reduce the excess amount until the differential dose is at or under the maximum correction amount.

3. The pharmaceutical injection device according to claim 2 , wherein the controller stores the reset future pharmaceutical injection schedule in the memory, and holds the preset pharmaceutical injection schedule.

4. The pharmaceutical injection device according to claim 3 , wherein, when the reset future pharmaceutical injection schedule has been further reset, the controller updates the reset pharmaceutical injection schedule stored in the memory to the further reset pharmaceutical injection schedule.

5. The pharmaceutical injection device according to claim 2 , wherein the controller causes the display component to display the current planned pharmaceutical dose that is planned on the basis of the reset future pharmaceutical injection schedule.

6. The pharmaceutical injection device according to claim 5 , wherein the controller causes the display component to display whether the actual pharmaceutical dose produced by comparing the cumulative planned pharmaceutical dose up to the last time with the actual pharmaceutical dose up to the last time is too high or too low.

7. The pharmaceutical injection device according to claim 6 , wherein the controller causes the display component to display the excess amount or the deficient amount of the actual cumulative pharmaceutical dose produced by comparing the cumulative planned pharmaceutical dose up to the last time with the actual cumulative pharmaceutical dose up to the last time.

8. The pharmaceutical injection device according to claim 7 , wherein the controller causes the display component to display a reason why the actual cumulative pharmaceutical dose produced by comparing the cumulative planned pharmaceutical dose up to the last time with the actual cumulative pharmaceutical dose up to the last time is too high or too low.

9. The pharmaceutical injection device according to claim 6 , wherein the controller causes the display component to display a message prompting the user to consult a physician when the excess amount or the deficient amount of the actual cumulative pharmaceutical dose produced by comparing the cumulative planned pharmaceutical dose up to the last time with the actual cumulative pharmaceutical dose up to the last time has exceeded the allowable divergence.

10. The pharmaceutical injection device according to claim 1 , wherein the pharmaceutical is a growth hormone.

11. A method for controlling a pharmaceutical injection device comprising a main body case that has an opening through which an injection needle is inserted and retracted; a pharmaceutical syringe mounting component that is provided inside the main body case and onto which a pharmaceutical syringe is mounted; a piston that is provided movably with respect to the pharmaceutical syringe mounted onto the pharmaceutical syringe mounting component; a drive mechanism that drives the piston; a display component that displays information related to the injection of a pharmaceutical; and a memory that is provided inside the main body case and stores a preset pharmaceutical injection schedule being set beforehand to divide a pharmaceutical into a plurality of injections to use up all of the pharmaceutical;
wherein said method includes a resetting step of resetting a current or future pharmaceutical injection schedule automatically to allocate a differential dose to a current or future pharmaceutical dose so as not to exceed a maximum correction amount when there is a difference by comparing a cumulative planned pharmaceutical dose, which is a planned cumulative amount of pharmaceutical injected up to a last time on the basis of the preset pharmaceutical injection schedule stored in the memory, and an actual cumulative pharmaceutical dose, which is a cumulative amount of pharmaceutical actually injected up to the last time, and when the absolute value of the differential dose is at or under an allowable divergence.

Assignees

• Panasonic Healthcare Co Ltd
• Panasonic Healthcare Holdings Co Ltd

Inventors

• Mukai Yasutaka
• Kikuchi Seiji
• Kondoh Tsuguhiro

Classifications

• A61M5/31568

  Means keeping track of the total dose administered, e.g. since the cartridge was inserted · CPC title

• A61M2205/502

  User interfaces, e.g. screens or keyboards · CPC title

• A61M2205/50

  with microprocessors or computers · CPC title

• A61M2205/3379

  Masses, volumes, levels of fluids in reservoirs, flow rates · CPC title

• A61M5/31546

  Electrically operated dose setting, e.g. input via touch screen or plus/minus buttons · CPC title