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drug delivery device

A technology for delivering devices and drugs, applied in infusion sets, ampoules, syringes, syringes, etc., to solve the problems of debris trapped between misplaced surfaces, unable to fit into pockets, and unsightly devices

Inactive Publication Date: 2019-10-22
SANOFI SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the dose selector is not aligned to the housing, the user may perceive the unit as unsightly or may even interpret the misalignment as a mechanical problem
Additionally, the unit may not fit in a pocket, bag or carrying case, or debris may become trapped between misaligned surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0122] figure 1 The drug delivery device 1 is shown in the form of an injection pen. The device has a remote ( figure 1 the upper end of the middle) and the proximal end ( figure 1 lower end of the middle). Parts of the drug delivery device 1 are shown in more detail in figure 2 with 3 middle. Drug delivery device 1 comprises housing 10, inner body or chassis 20, piston rod 30, driver 40, nut 50, display 60, button 70, storage barrel 80, torsion spring 90, drive nut 100, last dose nut 110, last dose Dose sleeve 120 , drive sleeve 130 , dose selector 140 and return spring 150 . A needle arrangement (not shown) with hub and cap can be provided as an additional component, which can be replaced as described above.

[0123] The housing 10 is a generally tubular component having a distal portion forming the cartridge support 11 housing the cartridge 80 and a proximal portion for housing the dosing mechanism. In a preferred embodiment, the housing 10 has a circular cross-sec...

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PUM

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Abstract

The present invention relates to a drug delivery device for selecting and dispensing a plurality of user-variable doses of a medicament comprising a dose limiter for preventing the set dose from exceeding the amount of liquid remaining in a cartridge of the drug delivery device. The device comprises: a housing (10, 20), a dose selector (140) for selecting a dose by rotation relative to the housing (10, 20), a dosing element (40, 130), and a releasable clutch (45 , 143), the releasable clutch (45, 143) is used to couple the dose selector (140) to the dosing element (40, 130) in rotation during dose selection and to make the dosing element (40, 130) are rotationally disengaged from the dose selector (140). The clutch includes a male spline (45), a corresponding female spline (143), and is oriented such that re-engaging the clutch will direct the male spline (45) to a predetermined rotation relative to the female spline (143) Orientation of curved or sloped surfaces (142).

Description

technical field [0001] The present invention generally relates to drug delivery devices for selecting and dispensing several user-variable doses of medicaments. In more detail, the present invention relates to a drug delivery device comprising a housing, a dose selector for selecting a dose by rotation relative to the housing, a dosing assembly and a releasable clutch for steering during dose selection An upper coupling of the dosing assembly to the dose selector and for rotationally uncoupling the dosing assembly from the dose selector during dose dispensing. Background technique [0002] The pen-type drug delivery device should be used to perform periodic injections by persons without formal medical training. This is increasingly common among patients with diabetes, where self-treatment enables these patients to effectively manage their disease. Indeed, such drug delivery devices allow the user to individually select and dispense several user-changeable doses of medicame...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/315
CPCA61M5/31548A61M5/31553A61M5/31528A61M5/31541A61M5/3155A61M5/31578A61M5/31593A61M2005/2403A61M2005/3126
Inventor T·奥克利K·休森S·米尔恩M·帕伍尔斯基
Owner SANOFI SA
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