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Improvements in and relating to medicament injection apparatus

An injection device, a technology of medicine, applied in the direction of medicine equipment, syringes, automatic injectors, etc.

Inactive Publication Date: 2005-04-20
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In known drug injection devices there is the problem that the injection interval, i.e. the time elapsed since the previous injection, is measured after the completion of a delivery stroke and not after the diffusion of the injected drug

Method used

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  • Improvements in and relating to medicament injection apparatus
  • Improvements in and relating to medicament injection apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Referring to the accompanying drawings, there is disclosed a schematic arrangement of a drug injection device according to the present invention. The drug injection device 2 comprises a housing 4 , a control unit or microprocessor 6 , a drive 8 , a piston 10 and a needle 12 . A preferably replaceable drug cartridge 14 is located between the plunger 10 and the needle 12 . The drug cartridge 14 comprises a closure at a first end adapted to be pierced by a needle, and a movable column located at a second end towards the drug cartridge and adapted to be driven by the piston 10 towards the first end of the drug cartridge 14. stuffed.

[0019] The control unit or microprocessor 6 includes a timer (timer). In use, set the dose of drug to be injected. The drive device 8 is then actuated to drive the piston 10 . The drive means 8 can be actuated mechanically or under the control of a control unit or microprocessor 6 . The drug in the drug cartridge 14 is then pushed out fro...

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PUM

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Abstract

The present invention relates to a drug injection device, which is particularly suitable for use by diabetics. During use, once the required drug dose is selected and pushed from the drug cartridge into the patient's body, the injected drug is injected before the needle is withdrawn from the patient's body. Can spread locally within the patient's body from the injection site. A problem with known drug injection devices is that the injection interval, ie the time elapsed since the previous injection, is measured after the completion of a delivery stroke and not from the diffusion of the injected drug. The invention discloses a drug injection device, in which the time elapsed after an injection operation is calculated from the end of a predetermined period of time, within which the drug can be diffused after an injection stroke is completed.

Description

technical field [0001] The invention relates to a drug injection device. The invention finds particular, but not exclusive use in electronically controlled injection devices, thereby enabling self-administration of drug doses. Background technique [0002] Such devices typically utilize a drug cartridge that stores the drug and include a microprocessor that controls a drive mechanism to deliver controlled doses of the drug through a needle device. The device is small enough to be easily carried around by the user. As such, the device is particularly suitable for use by persons suffering from diabetes. [0003] The invention is also suitable for other kinds of medicament injection devices, for example, an injection device in which, although dose setting and dose delivery are purely mechanical in nature, a timer is activated (started) after a dose delivery has been completed, to show the time elapsed since the dose was delivered. [0004] In each case, the needle of the dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/20A61M5/00A61M5/145A61M5/168A61M5/24A61M5/315
CPCA61M5/14566A61M5/16831A61M5/24A61M5/31525A61M5/31546A61M5/3157A61M5/31591A61M2005/31588A61M2205/52A61M2205/581A61M5/145A61M5/168
Inventor C·N·兰利R·F·维齐R·伍尔斯顿S·A·戴
Owner SANOFI AVENTIS DEUT GMBH