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drug delivery device

A technology for delivery devices and medicines, which is applied to medicine devices, infusion sets, and other medical devices, and can solve problems such as the inability of drug delivery devices

Active Publication Date: 2020-05-08
SANOFI SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this clutch mechanism could fail, for example due to overloading, then the entire drug delivery device cannot be used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0148] figure 1 A drug delivery device in the form of an injection pen is shown. The device has a remote ( figure 1 the left end of the center) and the proximal end ( figure 1 the right end of the middle). The components of a drug delivery device are figure 2 shown in . The drug delivery device comprises a body or housing 10, a cartridge holder 20, a lead screw (piston rod) 30, a drive sleeve 40, a nut 50, a dose indicator (number sleeve) 60, a button 70, a dial handle or dose Selector 80 , torsion spring 90 , cartridge 100 , metering element 110 , clutch plate 120 , clutch spring 130 and support 140 . A needle assembly (not shown) with needle hub and needle cover can be provided as an additional component, which needle assembly is replaceable as described above. All parts around image 3 The common main axis I of the shown mechanisms is located concentrically.

[0149] The housing 10 or body is a generally tubular element with an enlarged diameter at its proximal end...

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PUM

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Abstract

The present invention generally relates to a drug delivery device for selecting and dispensing a plurality of user variable doses of medicaments. The device comprises: a housing (10); a dose selector (80) operable to set the dose by rotation relative to the housing (10); a number sleeve (60) disposed on the housing (10) inside, so that at least a part of the number sleeve (60) is visible through the first aperture (11b) in the housing (10); the piston rod (30), which is coupled to said housing (10) and the drive sleeve ( 40), such that rotation of the drive sleeve (40) relative to the housing (10) causes translation of the piston rod (30) relative to the housing (10); and a clutch mechanism disposed between the number sleeve (60) and the drive sleeve between the cylinders (40). The clutch mechanism includes: a first coupling portion (42, 62), which is used to constrain the drive sleeve (40) and the number sleeve (60) together in rotation according to the axial position of the drive sleeve (60) ; the second coupling portion (43, 121), which is used to connect the drive sleeve (40) and the number sleeve according to the axial position of the drive sleeve (40) and / or according to the bias of the clutch spring (130). (60) are rotationally constrained together via clutch element (120).

Description

technical field [0001] The present invention generally relates to a drug delivery device adapted for selecting and dispensing a plurality of user variable doses of medicaments. Background technique [0002] Pen-type drug delivery devices may be used where routine injections are performed by persons without formal medical training. This may be increasingly common in patients with diabetes, where self-treatment enables such patients to effectively manage their disease. In practice, such drug delivery devices allow the user to individually select and dispense a plurality of user variable doses of medicament. The present invention does not relate to so-called fixed dose devices, which only allow to dispense a predetermined dose without the possibility to increase or decrease the set dose. [0003] There are basically two types of drug delivery devices: resettable (ie reusable) and non-resettable (ie disposable). For example, disposable pen delivery devices are available as st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/20A61M5/315
CPCA61M5/20A61M5/31541A61M5/31553A61M5/3157A61M5/31583A61M5/3146A61M5/31515A61M5/31511A61M2005/3126A61M2205/581A61M5/31535A61M5/31566A61M2005/2006A61M5/2033A61M5/31551A61M5/31585A61M2205/582A61M2205/585
Inventor W·马什A·P·莫里斯J·巴特勒M·琼斯S·斯蒂尔R·J·V·埃弗里
Owner SANOFI SA
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