Injection training device with sound prompting function

Abstract

The invention relates to an injection training device with a sound prompting function. The injection training device comprises an inner hollow shell, wherein an inner sleeve is arranged in the shell,and a boss extends in the radial direction ofan inner side wall of the shell; a piston pipe can be axially slidably inserted into the inner sleeve, a first end of the piston pipe impacts on the boss to generate a sound indicating the start of the injection; a first end part of a piston rod impacts on the boss to generate a sound indicating the completion of the injection, and a second end of the piston rod is detachably connected with the inner side wall of the inner sleeve through a locking structure; a linkage member is arranged on the piston rod, the linkage member is in interference fit with a small diameter section of the piston pipe, and the linkage member is in clearance fit with a large diameter section; a protective sleeve can be at least partially exposed to the port of the firstend of the shell, and an unlocking member capable of unlocking the locking structure is arranged on an inner wall of the protective sleeve; a first elastic member enablesthe piston rod to always maintain a trend of moving toward the first end of the shell; and a second elastic member enablesthe protective sleeve to always maintain a trend of partially exposing from the shell. The injection training device involves fewer components.

Description

technical field [0001] The invention belongs to the technical field of medical appliances, and in particular relates to an injection training device with a sound prompt function. Background technique [0002] The most common way of administering the drug is by injection, eg intravenously, subcutaneously or intramuscularly, a syringe containing the drug is used for the injection, which is usually administered by trained healthcare personnel. In some cases, where regular injections of medication are required, it may be desirable for a patient or other individual to use a syringe to self-inject or give injections to other individuals, and devices for automatic injections have been developed to allow patients to self-inject. [0003] However, since patients are usually neither nurses nor educated in medical devices, such devices for automatic injection must prove to be simple and safe to use. In particular, it is important to ensure that with such devices a controlled dose of p...

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the piston rod and the tube body (i.e. the piston tube) of this patent only have the effect of simulating the injection process. Regarding the sound prompt of the injection training device, the first sounding part and the second sounding part need to be set at first, and it is also necessary to A lot of parts are configured to cooperate with the first sounding part and the second sounding part, resulting in many parts involved in the injection training device as a whole, the structure is complicated, and the many parts will also lead to a high failure rate of the equipment

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