Axial drive mechanism, automatic injection device and method of using the same

Abstract

The invention discloses an axial drive mechanism with visual feedback, comprising a return spring, a release sleeve, a push rod and a bottom cover, the return spring is sleeved outside the release sleeve, and an injection spring is arranged between the push rod and the bottom cover, The axial drive mechanism also includes a limit sound ring and a guide sleeve. The release sleeve, the guide sleeve and the push rod are coaxially slid and nested. Push and rotate, the guide sleeve can interact with the push rod to generate a start prompt sound during the push rod advancing process, and the limit sound ring can interact with the guide sleeve to generate a termination prompt sound. Indicators are displayed separately when terminated. The invention also discloses an automatic injection device with double visual feedback applying the axial drive mechanism and a working method of the automatic injection device with double visual feedback.

Description

technical field [0001] The invention relates to a novel drug delivery device for self-management of diseases by patients and its working method, more particularly, it relates to an axial driving mechanism with visual feedback and automatic injection using the axial driving mechanism with visual feedback device and method of operation. Background technique [0002] With the explosive growth of the population, the urban siphon effect, 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, and people hope that the operation of the injection device is as simple as possible and does not require special training. Traditional injection devices usually need to be proficient in the angle of needle insertion, the depth of needle insertion, and manual injection, resulting in a cer...

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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