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Cartridge holder assembly for a drug delivery device

A technology of cartridges and components, applied in the field of drug delivery devices, which can solve problems such as increased fluid pressure and achieve the effect of size reduction

Inactive Publication Date: 2015-01-07
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, again such a return movement may in turn lead to the build-up of a non-negligible increase in fluid pressure, as a result, a certain amount of drug fluid may additionally be expelled from the cartridge 12, which may typically be observed as a droplet on the distal tip of the needle 20 form

Method used

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  • Cartridge holder assembly for a drug delivery device
  • Cartridge holder assembly for a drug delivery device
  • Cartridge holder assembly for a drug delivery device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0105] exist Figures 2 to 5 , a first embodiment of the compression member 26 is shown. The compression member 26 includes three retaining elements 28, 30, 32 in the shape of circular sections. The retaining elements 28 , 30 , 32 are separated by radially extending cuts or gaps 29 , 31 , 33 . Furthermore, the holding elements 28 , 30 , 32 are pivotally mounted on their outer ring edge 27 . In this way, the entire compression member 26 may comprise a shape having a variable height in the axial direction. As the orientation of each retaining element 28, 30, 32 changes, so does the size of its concentric through-holes 34 formed by the retaining elements 28, 30, 32.

[0106] exist figure 2 and 4 , the compression member 26 shows an initial configuration in which the holder 16 of the needle 20 has not yet been disposed in its final assembly position on the cartridge holder 14 . The retaining elements 28, 30, 32 point radially inwardly on the distal end, thus pointing in a do...

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PUM

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Abstract

The present invention relates to a cartridge holder assembly for a drug delivery device as well as to such drig delivery device and to a corresponding method of assembly, wherein the cartridge holder assembly comprises: - a cartridge holder (14; 40) adapted to receive a cartridge (12) to be filled with a medicinal product to be dispensed by the drug delivery device, wherein the cartridge holder (14; 40) comprises at least one through opening at a distal end section to receive a piercing element (20) being adapted to penetrate a sealing septum (22) of the cartridge (12), - a constriction member (26; 42) being adapted to axially abut against the septum (22) and comprising a through opening (34; 52) to receive the piercing element (20), wherein said through opening (34; 52) is adjustable in diameter.

Description

technical field [0001] The present invention relates to drug delivery devices, particularly pen-type injectors, ie, an injector that provides drug delivery by injecting the drug from a multi-dose cartridge. In particular, the present invention relates to a syringe that a user can set and dispense a medicament. Background technique [0002] User-operated drug delivery devices are known in the art. They are typically applicable in settings where persons without formal medical training, ie patients, need to administer precise and predetermined doses of drugs, eg, heparin or insulin. In particular, such devices have applications in the administration of drugs on a regular or irregular basis over short or long term periods. [0003] In order to meet these requirements, such devices must meet a large number of requirements. First, the device must be robust in construction, yet easy to handle and understand to be used by those who handle and deliver the desired dose or medicamen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/32
CPCA61M5/3134A61M2005/2407A61M5/2466A61M5/31573A61M5/24Y10T29/49826
Inventor M.朱格尔G.森达茨基A.托彻
Owner SANOFI AVENTIS DEUT GMBH