Pharmaceutical injection device

• US 10,159,799 B2
• Filed: 07/25/2017
• Issued: 12/25/2018
• Est. Priority Date: 09/12/2011
• Status: Active Grant

• Current Assignee: PHC Corporation (PHC Holdings Corporation)
• Original Assignee: JCR Pharmaceuticals Co., Ltd., PHC Corporation (PHC Holdings Corporation)
• Inventors: Kondoh, Tsuguhiro, Kikuchi, Seiji, Hanada, Takashi
• Primary Examiner(s): Stiles, Amber
• Application Number:
  US15/658,932
• Publication Number:
  US 20170333638A1
• Time in Patent Office: 518 Days
• CPC Class Codes: A61M 2005/14573 with a replaceable reservoir for quick connection/disconnection with a driving system
• CPC Class Codes: A61M 2005/206 With automatic needle insertion
• 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 2205/215 Tilt detection, e.g. for warning or shut-off
• CPC Class Codes: A61M 2205/3606 cooled
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/1684 by detecting the amount of infusate remaining, e.g. signalling end of infusion
• 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 5/31546 Electrically operated dose setting, e.g. input via touch screen or plus/minus buttons
• CPC Class Codes: A61M 5/31568 Means keeping track of the total dose administered, e.g. since the cartridge was inserted
• CPC Class Codes: A61M 5/31576 Constructional features or modes of drive mechanisms for piston rods
• CPC Class Codes: A61M 5/31593 Multi-dose, i.e. individually set dose repeatedly administered from the same medicament reservoir
• CPC Class Codes: A61M 5/326 Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user

Abstract

The pharmaceutical injection device includes a pharmaceutical syringe mounting portion (3) provided within a main body case (2) and to which a pharmaceutical syringe (4) is removably mounted, a piston (5) provided movably with respect to the pharmaceutical syringe (4) mounted to the pharmaceutical syringe mounting portion (3), a drive mechanism (6) for driving the piston (5), a controller (7) that is electrically connected to the drive mechanism (6), a display section (35) that is connected to the controller (7), and an encoder (26) that is connected to the controller (7) and detects the amount of the pharmaceutical remaining inside the pharmaceutical syringe (4). The controller (7) displays a warning on the display section (35) recommending removal of the pharmaceutical syringe (4) from the pharmaceutical syringe mounting portion (3) when the presence of a pharmaceutical is detected by the encoder (26).

Claims

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 portion that is provided inside the main body case and to which a pharmaceutical syringe is removably mounted;

a piston that is provided movably with respect to the pharmaceutical syringe mounted to the pharmaceutical syringe mounting portion;

a drive mechanism configured to drive the piston, the drive mechanism including a piston drive motor configured to drive the piston;

a controller that is electrically connected to the drive mechanism;

a display section that is connected to the controller;

a power button that is provided to a periphery of the main body case; and

a remaining pharmaceutical sensor that is connected to the controller and configured to sense the amount of pharmaceutical remaining in the pharmaceutical syringe from the amount of movement of the piston,

wherein, when the presence of a pharmaceutical is detected by the remaining pharmaceutical sensor;

the controller causes the display section to display a warning recommending removal of the pharmaceutical syringe from the pharmaceutical syringe mounting portion for storing the pharmaceutical syringe, and

the power for the device will not turn off even if the power button is pressed when the device is in a state in which the pharmaceutical syringe has not been removed from the pharmaceutical syringe mounting portion.

2. The pharmaceutical injection device according to claim 1, wherein the controller turns off power of the device after the pharmaceutical syringe has been removed from the pharmaceutical syringe mounting portion following the display of a warning on the display section.

3. The pharmaceutical injection device according to claim 1, wherein, when the presence of a pharmaceutical is not detected by the remaining pharmaceutical sensor;

the controller causes the display section to display a warning recommending attaching a new pharmaceutical syringe on the pharmaceutical syringe mounting portion, and

the power for the device will turn off when the power button is pressed even if the pharmaceutical syringe has not been removed from the pharmaceutical syringe mounting portion.