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Drug delivery device with load indicator

A delivery device and indicator technology, applied in the direction of medical equipment, instruments, syringes, etc., can solve the problems of no feedback mechanism, no dose, no knowledge, etc.

Active Publication Date: 2018-02-23
SANOFI SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for devices such as autoinjectors where there is no direct mechanical connection between the force input interface (such as a dose delivery button) and the proximal side of the bung in the medicament cartridge, this feedback mechanism does not exist, so the user may not Knowing that they have received a partial underdose or (for a dose comparable in size to the flexibility within the system) no dose

Method used

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  • Drug delivery device with load indicator
  • Drug delivery device with load indicator
  • Drug delivery device with load indicator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0113] refer to figure 1 and figure 2 , shows a drug delivery device according to an exemplary arrangement. The drug delivery device 1 comprises a housing with a cartridge holding portion 2 and a dosing mechanism 4 . The drug delivery device may be a resettable drug delivery device (ie a reusable device) or alternatively a non-resettable drug delivery device (ie a non-reusable device). The first end of the cartridge holding part 2 and the second end of the dose setting mechanism 4 are fastened together by a connecting structure. For non-resettable devices, these connections will be permanent or irreversible. For a reversible device, these linking structures would be releasable. The dispensing mechanism 4 is adapted to select a user-settable dose and to drive the piston rod 6 in the distal direction during dose dispensing (see image 3 ).

[0114] The removable cap 3 is releasably held on the distal end 19 of the cartridge holding part 2 . The dispensing mechanism 4 inc...

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PUM

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Abstract

The invention discloses a drug delivery device with load indicator. The invention refers to a drug delivery device (1) with a piston rod (6) which extends along a longitudinal axis of the drug delivery device (1), wherein the piston rod (6) is adapted to apply an axial load in the distal direction to a cartridge bung (27) in order to dispense a medicament contained in the cartridge (25). In orderto improve the convenience of the injection process and to mitigate the risk of underdosing due to a blocked needle a cartridge bung load indicator (40, 60, 70) is provided, located at the distal endof the piston rod (6) and adapted to abut against the cartridge bung (27), wherein the cartridge bung load indicator (40, 60, 70) comprises an indicator element (53, 62, 71) that audibly, tangibly and / or visually indicates a load state of the piston rod (6) to the user.

Description

technical field [0001] The present invention generally relates to a drug delivery device, ie a handheld injection device for selecting and dispensing a dose of a medicament. Background technique [0002] Drug delivery devices have application in the context of routine injections by personnel without formal medical training. This is increasingly common among diabetics, where self-treatment enables these patients to effectively manage their disease. Indeed, such drug delivery devices allow the user to individually select and dispense a dose of medicament, which may be a fixed dose or a user variable dose. The medicament is usually contained within a cartridge. There are basically two types of drug delivery devices: resettable devices (ie reusable devices) and non-resettable devices (ie disposable devices). For example, disposable drug delivery devices are supplied as self-contained devices. Such self-contained devices contain pre-filled cartridges that cannot be removed fr...

Claims

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Application Information

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IPC IPC(8): A61M5/315A61M5/48A61M5/50A61M5/168A61M5/31
CPCA61M5/31515A61M5/5086A61M2005/16863A61M2005/3125A61M2205/332A61M2205/52A61M2205/581A61M2205/582A61M2205/583A61M5/486A61M5/20A61M2205/587
Inventor O·C·盖泽利J·L·加雷斯D·T·德索马里兹林特尔M·M·琼斯R·F·维齐D·普伦特里A·P·莫里斯
Owner SANOFI SA
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