Needle head safety double sleeve

Abstract

The invention relates to a needle head safety double sleeve, which is used for sleeving and covering a needle head of a syringe. The needle head safety double sleeve comprises an internal sleeve and an external sleeve which are sleeved with each other, wherein the internal sleeve comprises a sleeve seat and a sleeve body which are connected with each other on one side wall; the external sleeve covers at the periphery of the internal sleeve; slots, which are aligned with or interlaced with each other, are formed on the internal sleeve and the external sleeve respectively along with the length directions; when the two slots are aligned with each other, a pipe is provided for the needle head of the syringe to horizontally cross up and down, so that the needle head is prevented from being pierced into a handle of a user; and when the two slots are interlaced with each other, the needle head is covered into the double sleeve consists of the internal sleeve and the external sleeve, so that residual medicinal liquid in the needle head is prevented from flowing out of the slots.

Description

technical field [0001] The invention relates to a structure of a sleeve, in particular to a structure of a safety double sleeve of a needle. Background technique [0002] A syringe is a device used to inject liquid substances such as medicinal liquid, blood or nutrient solution into the patient's body. It inserts the needle into the patient's body, and then utilizes the thrust of the piston in the syringe to inject the liquid stored in the syringe into the patient's body through the needle. [0003] Since the needle of the syringe is inserted into the patient's body during use, the needle of the syringe is stained with the patient's blood after use. In order to prevent us from being accidentally infected by patients, used needles must be disposed of safely so that no one can touch them. [0004] Accordingly, there is a so-called safety syringe structure, which mainly collects or breaks the used needles in a container to prevent anyone from touching them, so as to avoid inf...

AI Technical Summary

Problems solved by technology

That is, when the medical staff intends to place the needle 500 in the needle sleeve 600 after the syringe injection is completed, the needle 500 is inserted straight from the open end 611 of the needle sleeve 600 along the length direction of the needle body 510 However, this insertion action along the length direction of the needle body 510 may cause the tip of the needle body 510 to penetrate along its length direction due to factors such as inadvertent or accidental pushes. In the hands of medical staff, causing accidental infection of medical staff and other users

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