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Dose setting mechanism and injection device

A technology of dose setting and drug delivery device, which is applied in the direction of syringes, ampoule syringes, hypodermic injection devices, etc., can solve the problem of not describing the clicking sound generator, etc., and achieve good digital alignment effect

Active Publication Date: 2014-02-05
SANOFI AVENTIS DEUTSCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, WO2006 / 037434A1 does not teach that at any time during operation the first clutch couples the dose setting member to the drive member and / or the second clutch couples the drive member to the clicker part
Furthermore, there is no description in this document of a clicker generating tactile and / or audible feedback
Furthermore, in the mechanism of WO2006 / 037434A1 there is no clutch member located between the dose setting member and the drive member which is movable in axial direction relative to these parts

Method used

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  • Dose setting mechanism and injection device
  • Dose setting mechanism and injection device
  • Dose setting mechanism and injection device

Examples

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Embodiment Construction

[0055] figure 1 A typical dose setting mechanism 1 of an injection device with a clicker mechanism is shown. The dose setting mechanism comprises: (inner) housing member 2; dose setting member 3 including a number sleeve (dose dial sleeve) for displaying the set dose to the user; drive member 4; clutch member 5; and clicker 6. The clutch member 5 is located between the dose setting member 3 and the drive member 4 . The clutch member 5 is axially movable relative to the dose setting member 3 and the drive member 4 for rotationally coupling and decoupling the dose setting member 3 and the drive member 4 . Such as figure 1 As shown, the first clutch 5 utilizes two sets of matching face teeth 5a, 5b provided on the inner end face of the dose setting member 3 and on the corresponding end face of the tubular clutch member 5 .

[0056] In a similar manner, the clicker mechanism utilizes two sets of matching face teeth 6a, 6b, together with a coil spring 7, to provide both detent ...

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PUM

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Abstract

A dose setting mechanism for a drug delivery device is provided comprising a dose setting member, a drive member, a clutch, a first clicker and second clicker. The first clutch and a second clutch are designed and adapted to each other such that at any time during operation either the first clutch rotationally couples the dose setting member and the drive member and / or the second clutch rotationally couples the drive member and the first clicker component. Further, the invention refers to an injection device with such a dose setting mechanism.

Description

technical field [0001] The present invention relates to a dose setting mechanism for a drug delivery device, such as a pen-type injector, which enables administration by injection of a medicinal product from a multi-dose cartridge. The dose setting mechanism may comprise a housing, a dose setting member (number sleeve), a drive member (drive sleeve), a clutch and a clicker. Furthermore, the invention also relates to an injection device having such a dose setting mechanism. Background technique [0002] When the drive sleeve is coupled to the digital sleeve via a clutch during dialing (dose setting) and to the housing via a clicker during dispensing, and the coupling and decoupling are through the clutch member during dialing (dose setting) and In injection devices that are achieved by movement between dispensing positions, it is important to ensure that, under both normal and misuse conditions, at the limits of tolerance, the user cannot Separate the drive sleeve from the ...

Claims

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Application Information

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IPC IPC(8): A61M5/24A61M5/315
CPCA61M5/24A61M5/31535A61M5/31525A61M5/168A61M5/315A61M5/31533A61M5/31548A61M5/31555A61M5/31528A61M5/3155A61M5/31551A61M5/31585
Inventor D.A.普伦普特里
Owner SANOFI AVENTIS DEUTSCHLAND GMBH
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