Split type protective needle cylinder device

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a split type protective syringe device. By arranging the fixed shaft unit, the rotary outer tube unit and the inner tube unit on the needle mounting tube, the needle cylinder device is more efficient, sanitary, stable and convenient to use. Compared with the prior art, the syringe has the following advantages that firstly, the syringe has a sealing protection effect and a structural protection function, and it is guaranteed that the syringe is not prone to being bent or polluted; secondly, the needle head can be opened only by rotating the outer circular tube, the inner sealing tube is automatically bounced off and taken down, the requirement that the needle head is scrapped after being covered can be met even if the outer circular tube is rotated and reset after use, and the whole needle cylinder device is quick and safe to use; and thirdly, the rotary outer tube unit has a positioning function before and after rotary opening, so that the rotary outer tube unit is not easy to fall off accidentally during injection and is not easy to open accidentally during resetting and scrapping.

Description

technical field [0001] The invention belongs to the technical field of medical appliances, in particular to a split-type protective syringe device. Background technique [0002] The syringe parts of the syringe mainly include a cylinder body, a needle mounting tube, a needle head and a needle cap. Among them, there are two main requirements for the protection of needles: 1. Structural protection to prevent it from being easily bent; 2. Sealing protection to prevent it from being polluted by bacteria and viruses. [0003] Therefore, for the existing common rubber tube type needle cap, its structural protection function is completely absent, and its sealing protection effect is not enough. Has a relatively high risk of falling. [0004] Therefore, now there is a combined needle cap structure with hard tube protection and soft ring seal. For example, the Chinese utility model patent with the patent announcement number CN209237057U and the announcement date is 2019.08.13. [...

AI Technical Summary

Problems solved by technology

[0008]However, the turning device for the syringe in this invention patent lacks the positioning function in the open state after it is opened, so when the syringe is performing an injection operation, the turning The device is easy to hang down or swing freely, which will increase the pain of the injection operation and is very unsafe

[0009] Moreover, the sealing effect on the needle also has the problem of insufficient strength, the entire sealing structure is too large, and the degree of sealing protection on the needle is not enough

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