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Injection device with a preselector

A technology for injection devices and preselectors, applied in the direction of syringes, automatic injectors, hypodermic injection devices, etc., which can solve the problem of discarding

Inactive Publication Date: 2020-06-16
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, disposable type injection devices are discarded when the medicament in the cartridge has been dispensed or used up

Method used

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  • Injection device with a preselector
  • Injection device with a preselector
  • Injection device with a preselector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0164] Such as figure 1 and figure 2 The illustrated injection device 1 is a prefilled disposable injection device comprising a housing 10 to which an injection needle 15 can be secured. The injection needle 15 is protected by an inner needle cap 16 and an outer needle cap 17 or a protective cap 18 configured to surround and protect the distal section of the housing 10 of the injection device 1 . Housing 10 may include and form a main housing member configured to accommodate, for example, figure 2 The drive mechanism 8 is shown. The injection device 1 may further comprise a distal housing part denoted cartridge holder 14 . The cartridge holder 14 may be permanently or releasably connected to the main housing 10 . The cartridge holder 14 is generally configured for receiving a cartridge 6 filled with a liquid medicament. The cartridge 6 comprises a cylindrical or tubular barrel 25 which is sealed in the proximal direction 3 by a bung 7 located inside the barrel 25 . The...

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PUM

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Abstract

The present disclosure relates to an injection device for setting and injecting a dose of a medicament, the injection device comprising: an elongated housing (10) extending along a longitudinal axis (z) and having a distal end (41) and a proximal end (42), a dose tracker (50; 150; 250; 350; 450; 550) being at least one of translationally or rotationally displaceable relative to the housing (10) and being displaceable between a zero dose positional state (52) and a maximum dose positional (54) state relative to the housing (10) for setting of the dose, wherein the positional state (52, 54) of the dose tracker (50; 150) relative to the housing (10) is indicative of a size of the dose, one of the elongated housing (10) and the dose tracker (50; 150; 250; 350; 450) comprises at least one tracking stop feature (51; 151; 251; 351; 451; 551 ), a preselector (70; 170; 270; 370; 470; 570) displaceable relative to the housing (10) between at least two preselection positional states (72, 74) thereby defining the maximum dose positional state (54) of the dose tracker (50; 150; 250; 350; 450; 550), and the preselector (17; 170; 270; 370; 470; 570) comprises at least one preselector stop feature(71; 171; 271; 371; 471 ) configured to mechanically engage with the at least one tracking stop feature (51; 151; 251; 351; 551 ) to block a displacement of the dose tracker (50; 150; 250; 350; 450;550) beyond the maximum dose positional state (54).

Description

[0001] One aspect of the present disclosure relates to an injection device, such as a pen injector, for setting and dispensing a dose of a medicament. In particular, the present disclosure relates to an injection device comprising a preselector configured to limit the maximum dose that can be set and dispensed by the injection device. Background technique [0002] Injection devices for setting and dispensing single or multiple doses of liquid medicaments are per se well known in the art. In general, such devices have a substantially similar purpose to ordinary syringes. [0003] Injection devices, in particular pen injectors, have to 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 be visually impaired. Therefore, a suitable injection device especially intended for home medication needs to be robust in construction and should be easy to use. Furth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/315
CPCA61M5/20A61M5/31536A61M5/31551A61M5/3156A61M5/31586A61M2005/3154
Inventor M·赫尔默M·贾格尔M·沙巴克M·劳J·克斯廷A·瑟恩斯
Owner SANOFI AVENTIS DEUT GMBH
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