Medicine injection device

• US 10,052,442 B2
• Filed: 08/25/2015
• Issued: 08/21/2018
• Est. Priority Date: 12/22/2008
• Status: Active Grant

• Current Assignee: PHC Holdings Corporation
• Original Assignee: PHC Holdings Corporation
• Inventors: Watanabe, Atsushi, Kikuchi, Seiji, Kondo, Tsuguhiro
• Primary Examiner(s): Farrar, Lauren P
• Application Number:
  US14/835,040
• Publication Number:
  US 20150359977A1
• Time in Patent Office: 1,092 Days
• CPC Class Codes: A61J 7/0427 with direct interaction with a dispensing or delivery system
• CPC Class Codes: A61J 7/0472 of the count-down type, i.e. counting down a predetermined interval after each reset
• CPC Class Codes: A61M 2005/2407 from the rear
• CPC Class Codes: A61M 2005/2488 via rotation, e.g. threads or bayonet
• CPC Class Codes: A61M 2005/3125 specific display means, e.g. to indicate dose setting
• CPC Class Codes: A61M 2005/31588 electrically driven
• CPC Class Codes: A61M 2205/14 Detection of the presence or absence of a tube, a connector or a container in an apparatus
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/276 preventing unwanted use
• CPC Class Codes: A61M 2205/3561 local, e.g. within room or hospital
• CPC Class Codes: A61M 2205/3584 using modem, internet or bluetooth
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• 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 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2205/584 having a color code
• CPC Class Codes: A61M 2205/6018 providing set-up signals for the apparatus configuration
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• 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
• CPC Class Codes: A61M 5/2066 : comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/2448 : comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/3146 : Priming, e.g. purging, reducing backlash or clearance
• CPC Class Codes: A61M 5/31525 : Dosing burettes, pipettes B01L3/02
• CPC Class Codes: A61M 5/31546 : Electrically operated dose setting, e.g. input via touch screen or plus/minus buttons
• CPC Class Codes: A61M 5/347 : rotatable, e.g. bayonet or screw A61M5/344 takes precedence
• CPC Class Codes: A61M 5/5086 : for indicating if defective, used, tampered with or unsterile

Abstract

In a medicament dispensing device (1), when a medicament preparation-containing syringe (11) is replaced, a microprocessor (23) detects the time at which the replacement is performed as the time of the start of use of the preparation, and counts the elapsed time after the use of the preparation has started. Then, the microprocessor (23) notifies the result of the counting by a LCD (10), etc. to the user. Also, the microprocessor (23) detects that a syringe needle for dispensing the preparation has been mounted, and after detecting the mounting of the syringe needle, the microprocessor (23) counts the elapsed time after the start of use of the preparation. When an effective use period has expired, the microprocessor (23) issues a message in a step S17 that the effective period of a medicament has expired.

Claims

1. A medicine injection device equipped with a formulation syringe and used to inject the formulation into a living body, the medicine injection device comprising:

a formulation dissolving section which dissolves the formulation contained in the syringe;

a formulation dissolving detecting section which detects the dissolving timing of the formulation dissolved by the formulation dissolving section as a timing to start using the formulation;

a use time counting section which counts a time elapsed from the timing to start using the formulation;

a memory which stores the timing to start using the formulation detected by the formulation dissolving detecting section and an expiration date of the formulation started from the dissolving timing of the formulation;

a remaining time calculating section which calculates a remaining time until the expiration date based on the expiration date and the elapsed time counted by the use time counting section; and

a notification section which notifies the remaining time until the expiration date calculated by the remaining time calculating section.

2. The medicine injection device according to claim 1, wherein the formulation dissolving section which has a piston drive motor and a piston connected to the piston drive motor, and dissolves the formulation contained in the syringe by rotating the piston drive motor and moving the piston forward by a predetermined amount.

3. The medicine injection device according to claim 2, wherein the distance moving the piston forward is obtained by counting the number of pulses generated from an encoder connected to the piston drive motor, and the formulation dissolving detecting section which detects the timing when the formulation is dissolved by counting the predetermined number of the pulses generated from an encoder.

4. The medicine injection device according to claim 1, wherein the use time counting section which manages a term of expiration by starting a timer at the timing to start using the formulation.

5. The medicine injection device according to claim 2, wherein, when the formulation syringe is mounted on a medicine injection device body, the formulation dissolving section detects that the formulation syringe is mounted on the medicine injection device body and presses the piston outward using the piston drive motor to automatically dissolve the formulation.

6. The medicine injection device according to claim 2, wherein, when an operation button of the medicine injection device body is pressed, the formulation dissolving section semi-automatically dissolves the formulation by pressing the piston outward using the piston drive motor.

7. The medicine injection device according to claim 1, further comprising:

a syringe detecting section which detects an attachment of the formulation syringe for injecting the formulation,

wherein the memory stores the dissolving start timing of the formulation detected by the formulation dissolving detecting section after the syringe detecting section detected the attachment of the formulation syringe, as the timing to start using the formulation.

8. The medicine injection device according to claim 7, wherein the syringe detecting section comprises a syringe detecting switch having switch function that touch to one end of the formulation syringe when the formulation syringe is attached to the medicine injection device.

9. The medicine injection device according to claim 1, wherein the notification section notifies the remaining time until the expiration date by at least one of display sound or voice.

10. The medicine injection device according to claim 1, wherein the notification section notifies by means of an alarm when the elapsed time is more than a predetermined value or the remaining time until the expiration date is the predetermined value or less.

11. The medicine injection device according to claim 1, further comprising:

a formulation injecting section which injects the formulation; and

a formulation injection preventing section which stops an operation of the formulation injecting section when it is determined that the expiration date is overdue based on the elapsed time.

12. The medicine injection device according to claim 1, further comprising:

an input section which inputs an information related to a time limit including the expiration date, wherein the use time counting section counts the elapsed time based on the information related to the time limit inputted by the input section.