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injection device

A technology of injection device and housing, applied in the directions of syringes, ampoule syringes, hypodermic injection instruments, etc., can solve the problems of unwillingness to attach additional modules, unwillingness, etc.

Active Publication Date: 2021-12-21
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the end user may be rather reluctant or may not be willing to permanently attach the add-on module to the injection device, especially when carrying the injection device

Method used

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Embodiment Construction

[0132] Such as Figure 1-3 The exemplary injection device 10 shown in includes a housing 12 of elongate shape. The direction of elongation of the housing 12 defines an axial direction. Housing 12 may be generally cylindrical or oval. Housing 12 includes a distal or dispensing end 20 at one longitudinal end. At the opposite longitudinal end, ie at the proximal end 24 , the injection device 10 comprises a dose selector 13 and a dose button 14 . The dose selector 13 has a ring shape and is configured to be dialed clockwise or counterclockwise to set a dose of the variable sized medicament. The size of the actually set dose is displayed in the metering window 17 . The presently shown dose indicating mechanism 26 includes a number sleeve 90, such as Figure 5 shown in more detail.

[0133] Since the number sleeve 90 is tubular, it comprises a first axial portion 91 and a second axial portion 92 . In the first axial portion 91 a pattern 97 of consecutive numbers 96 indicating...

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PUM

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Abstract

In one aspect, the invention relates to an injection device for delivering a dose of a liquid medicament, said injection device comprising: - an elongated housing (12) having a dispensing end (20) and configured to accommodate a filling a cartridge (1) with said liquid medicament, a drive mechanism (5) configured to be operatively engaged with said cartridge (1) for dispensing from said dispensing end (20) A dose of medicament is expelled from the cartridge (1), - a protective cap (30), which is releasably attached to said housing (12) to cover said dispensing end (20), - a first electronic circuit (40) attached to said protective cap (30) and electrically connected to at least a first cap electrode (32, 33, 34) arranged on said protective cap (30), - arranged in said housing (12) An internal second electronic circuit (60) coupled to said drive mechanism (5) and electrically connected to at least a first housing electrode (62, 63, 64) located on said housing (12) , - wherein said first and second electronic circuits (40, 60) are electrically connected to each other via said at least first cap electrode (32, 33, 34) and said at least first housing electrode (62, 63, 64) connection, when the protective cap (30) is attached to the housing (12), the at least first cap electrode (32, 33, 34) and the at least first housing electrode (62, 63 , 64) mutual contact.

Description

technical field [0001] The present invention relates to the field of injection devices, and in particular to manually operated injection devices, such as clip-on pen injectors. In one aspect, the invention provides electronic measurement of the dose of medicament actually set or dispensed by the injection device. Background technique [0002] Drug delivery devices for setting and dispensing single or multi-dose liquid medicaments are known per se in the art. In general, such devices generally serve a similar purpose to that of a typical syringe. [0003] Drug delivery devices such as pen injectors must meet a number of user-specific requirements. For example, in the case of a patient suffering from a chronic disease such as diabetes, the patient may be debilitated and may also have impaired vision. Therefore, a suitable drug delivery device, especially intended for home pharmacy, must be structurally robust and should be easy to use. Furthermore, the handling and general...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/32A61M5/315A61M5/24A61M5/31
CPCA61M5/3202A61M5/31553A61M5/24A61M2205/50
Inventor T·克莱姆S·米勒-帕思勒
Owner SANOFI AVENTIS DEUT GMBH