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drug delivery device

A delivery device and drug technology, applied in the direction of hypodermic injection equipment, etc., can solve problems such as misreading and poor dose accuracy

Inactive Publication Date: 2020-09-04
SANOFI SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the tens disc moves accidentally, misreadings may occur, resulting in poor dose accuracy

Method used

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Embodiment Construction

[0117] Such institutions include figure 1 Key components shown in: housing 10, frame 20, dose button 30, dose selector in the form of dial handle 40, dose counter mechanism 50 with ones 51 and tens 52 wheels, clutch 60, Last dose reel 70 , last dose nut 80 , dose ring gear 90 , release gear 100 , cable 110 with piston 111 or bearing disc, piston spring 120 , clutch lever 130 , cartridge 140 .

[0118] The medicament cartridge 140 is contained within the cartridge holder part 11 of the housing 10 . During assembly, the cartridge holder 11 is rigidly connected to the housing 10 of the pen injector. The piston 111 is a bearing part on the main axis I of the pen-type injector, its proximal side is rigidly connected to the cable 110 and the piston spring 120 , and its distal side bears against the bung 141 of the medicament cartridge 140 . The proximal end of the piston spring 120 reacts against the frame 20 .

[0119] The proximal end of the cable 110 terminates on and is wound...

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Abstract

A drug delivery device for selecting and dispensing a number of user variable doses of a medicament includes a housing having an opening, a dose selector operable to set a dose by rotation relative to the housing, a release member controlling movement of a piston in a dispensing direction, and a display comprising a units number wheel and a tens number wheel which are coupled to each other such that a continuous rotation of the units number wheel is translated into an intermittent rotary motion of the tens number wheel. The release member rotates, during dose dispensing, an angle corresponding to the dose set by the dose selector, thereby allowing a piston to move in a dispensing direction.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/315
CPCA61M5/31533A61M5/31536A61M5/31561
Inventor J·巴特勒A·P·莫里斯W·G·A·马什M·M·琼斯
Owner SANOFI SA
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