Safety protection device for injector

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a safety protection device for an injector. The sliding inner tube unit is arranged in the fixed outer tube unit, and the needle cylinder clamping frame unit is arranged at the rear end of the sliding inner tube unit, so that the effect that injection operation is more accurate and safer is achieved. The protection device has the following advantages that firstly, after the needle cylinder is mounted on the protection device, the needle cylinder is always parallel to the fixed outer tube unit, and as long as the fixed outer tube unit does not deflect, the injection operation is vertical insertion, so that pain caused by deflection of a needle head is avoided; secondly, the sliding inner tube unit has a determined sliding distance on the fixed outer tube unit, the insertion depth can be ensured when the needle cylinders of the same specification are used, and the problem that the depth is not enough or too large is avoided; and thirdly, when the sliding inner tube unit and the needle cylinder are inserted together, the sliding inner tube unit is always and stably sleeved with the fixed outer tube unit, so that the stability of the needle cylinder is relatively high in the injection operation process.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a safety protection device for syringes. Background technique [0002] The structure of the syringe mainly includes the syringe and the push rod. During the use of the syringe, there are two relatively common accident risks. The first is that the insertion depth of the injection needle is too large or too small, resulting in drug injection. The accident of inaccurate position, the second is that during the injection process, the injection needle is deflected, which expands the shape of the needle hole and brings greater pain to the patient. [0003] Therefore, in order to deal with the above two problems, various syringe guards have appeared on the market now, but their use effects all have a certain degree of deficiency. [0004] For example, the Chinese utility model patent with the patent announcement number CN213191805U and the announcement date of 2021.05.14 disclos...

AI Technical Summary

Problems solved by technology

[0007] However, the syringe protective cover in this utility model patent, which is composed of the syringe as a whole, may still be tilted during the insertion of the injection needle

And more importantly, the protective cover and the injection needle will be forced to be perpendicular to the patient's skin surface in the end, which causes great pain when the injection needle is pulled in the muscle

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