Auto-injector

A technology for automatic injectors and injection sites, applied in the direction of automatic injectors, syringes, hypodermic injection devices, etc., can solve problems such as non-compliance, interference, unsafe and reliable

Active Publication Date: 2018-04-03
APTAR FRANCE SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is not safe, reliable or desirable as the system is user dependent and in some cases the user may be disturbed or overwhelmed by the injection he or she is performing

Method used

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Examples

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Embodiment Construction

[0051] In the following description, the terms "upper", "lower", "higher" and "lower" refer to Figures 1a to 7 , 17, 18 and 20a to 26 show the positions. The terms "axial" and "radial" refer to especially Figure 1a and 20a The central longitudinal axis X is shown, which corresponds to the longitudinal axis of the needle.

[0052] The autoinjector is described below with reference to its two advantageous embodiments. It should be noted, however, that autoinjectors are complex devices having several components to perform several functions. These various components can be used individually and independently of each other without being combined with other components, especially for auto-injectors that are shaped differently than shown in the drawings. Furthermore, it should be noted that the drawings are schematic and do not necessarily show the exact shape of the components of the autoinjector, nor are they necessarily shown to scale, especially for the sake of clarity. In ...

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Abstract

An auto-injector comprising: - a body (1) receiving a reservoir (S), said reservoir (S) containing fluid product and comprising a piston (P), in the same way as a pre-filled syringe, - a piston rod (5) suitable for cooperating with the piston (P) of said reservoir (S), said piston rod (5) being movable by an injection spring (8) between a loaded position and an injection position in which said piston rod (5) has moved the piston (P) of the reservoir (S) in order to inject the fluid product into an injection site, - a visual, audio and / or tactile indicator device, for indicating to the user that he can remove said auto-injector from said injection site, said auto-injector comprising a delay system for delaying the actuation of said visual, audio and / or tactile indicator device relative to the end of the injection, said delay system comprising a reservoir (16) containing a fluid, a piston (19) being disposed in said reservoir (16), one of said reservoir (16) and said piston (19) being movable in translation in said body (1) when said delay system is actuated, and the other of said reservoir (16) and said piston (19) being fixed relative to said body (1) when said delay system is actuated, the translational movement of one relative to the other moving said fluid out of said reservoir (16), through at least one flow passage (161; 195), such that said translational movement is braked, said delay system comprising said reservoir (16) containing said fluid, said piston (19), a delay spring (18) attached to said piston (19) and to said body (1), a locking key (20) and said piston rod (5). Figure to be published: figure 1b

Description

technical field [0001] The present invention relates to automatic injectors. Background technique [0002] Autoinjectors are well known in the art. These devices are primarily used to automatically inject the contents of a syringe into a patient. Various systems exist for automatically inserting needles into patients and infusing liquid formulations in syringes. Autoinjectors are relatively complex devices that must accommodate many constraints that increase safety and reliability. The robustness of the device, its ease of handling and its user-friendliness for its use are also important factors. In addition, most of these auto-injectors are single-use, and the production cost and assembly cost are also factors that should be considered. [0003] There are many auto-injectors on the market, however, which have a number of drawbacks. [0004] Therefore, especially when the amount of the liquid formulation is large, and / or when the injected liquid formulation is relativel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/20A61M5/32
CPCA61M5/20A61M5/32A61M5/2033A61M5/3157A61M2005/2013A61M2005/208A61M2005/2086A61M2205/581A61M2205/582A61M2205/583A61M5/31511A61M5/31538
Inventor D·法比恩T·戈麦兹O·伊斯A·索赛
Owner APTAR FRANCE SAS
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