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injection device

A technology of injection device, housing, applied in the direction of syringes, automatic injectors, hypodermic injection devices, etc.

Inactive Publication Date: 2020-04-28
SANOFI SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the last dose protection mechanism of WO2004 / 078241A1 is reliable, a possible disadvantage is that user force is transmitted to the driver via the dose setting knob and the longer tubular driver, which may have a small degree of elasticity

Method used

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Embodiment Construction

[0123] Figure 1 to Figure 3 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). figure 2The components of the drug delivery device are shown. The drug delivery device comprises a main housing 10, a housing insert 20, a cartridge holder 30, a dial handle 40, a last dose nut 50, a piston rod 60 with a support (not shown), a drive tube 70, an upper drive Sleeve part 80 and lower drive sleeve part 90, motor spring 100, planet carrier 110, set of three planetary gears 120, ones gear 130, tens wheel 140, index wheel 150, storage reel 160, trigger Spring 170 , dose nut 180 and cartridge 190 . Furthermore, a cover (not shown in the figure) may be provided. Thus, not counting the liquid medicament cartridge 190, the mechanism consists of 19 unique components. The needle combination with hub and shield can be provided as an add-on part, which...

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PUM

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Abstract

The invention relates to a hand-held injection device comprising: a housing (10, 20, 30); a piston rod (60) defining a first longitudinal axis (I) and located within the housing (10); a driver ( 70,80,90), which is coupled to the piston rod (60); the dose setting device (40), which is rotatable during dose setting; the power accumulator (100), which is used to drive the drive (70,80,90 ); and a digital wheel (130) for displaying the dose set by the dose setting device (40).

Description

technical field [0001] The present invention generally relates to a handheld injection device, ie a drug delivery device for selecting and dispensing a plurality of user variable doses of medicament. Background technique [0002] Pen-type drug delivery devices have application in the context of routine injections by personnel without formal medical training. This application may be increasingly common in patients with diabetes, where self-treatment allows such patients to effectively manage their disease. Indeed, such drug delivery devices allow the user to individually select and dispense multiple user variable doses of drugs. The present invention does not relate to so-called fixed dose devices, which only allow a predetermined dose to be dispensed, without the possibility of increasing or decreasing the set dose. [0003] There are basically two types of drug delivery devices: resettable devices (ie reusable devices) and non-resettable devices (ie disposable devices). ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/315A61M5/20A61M5/00
CPCA61M5/31541A61M2205/581A61M2205/583A61M5/20A61M5/31553A61M5/3157A61M5/31583A61M2005/3126A61M2205/582A61M5/31528A61M5/31551
Inventor A·P·莫里斯
Owner SANOFI SA