Axial driving mechanism, automatic injection device and use method of automatic injection device

Abstract

The invention discloses a visual-feedback axial driving mechanism. the visual-feedback axial driving mechanism comprises a reset spring, a release sleeve, a push rod and a bottom cover, wherein the reset spring sleeves the release sleeve, and an injection spring is arranged between the push rod and the bottom cover. The axial driving mechanism further comprises a limiting sound production ring and a guide sleeve, wherein the release sleeve, the guide sleeve and the push rod are coaxially nested in a sliding mode, the limiting sound production ring is rotationally connected to the end of the guide sleeve in a sleeving mode and is pushed to rotate by the push rod, the guide sleeve and the push rod can act to generate starting prompt sound in a pushing process of the push rod, the limiting sound production ring and the guide sleeve can act to generate stopping prompt sound, and the limiting sound production ring displays indication marks separately during the starting and stopping of pushing of the push rod. The invention further discloses an automatic injection device with double visual feedback employing the axial driving mechanism and a working method of the automatic injection device with the double visual feedback.

Description

technical field [0001] The present invention relates to a novel drug delivery device for self-management of diseases by patients and its working method, more specifically, it relates to an axial drive mechanism with visual feedback and an automatic injection device using the axial drive mechanism with visual feedback device and its working method. Background technique [0002] With the explosive growth of population, the siphon effect of cities, and the increasing shortage of medical resources, the management of chronic diseases will occupy a large amount of medical resources, resulting in huge economic costs. Society has put forward higher requirements for injection devices used by patients themselves. People hope that the operation of injection devices is as simple as possible and does not require special training. Traditional injection devices usually require proficiency in the angle and depth of needle insertion, and manual injection, resulting in a certain difference i...

AI Technical Summary

Problems solved by technology

However, in some specific cases, there will be phenomena such as loss of limiting parts and patients forgetting to operate, so that the product cannot ensure that it is self-locking after use.

And this design is contrary to human factors engineering and does not conform to the design characteristics of this type of product

[0007] 5. Existing products often can only judge whether the liquid medicine has been injected by viewing the position of the piston or push rod in the prefilled syringe through the observation window. However, due to various restrictions, it is impossible to accurately judge whether the liquid medicine has been completely injected like traditional manual injection. complete

However, in this invention, the stopping elements used for vocal feedback are continuously distributed, and they are always vocal from the beginning of the injection to the end of the injection, and there is no obvious distinction, which is likely to cause confusion for the patient and cannot accurately identify the injection state

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