Novel safe needle used with insulin pen

Abstract

The invention discloses a novel safety needle used for an insulin pen, which comprises a needle seat and a needle body, and the needle body is fixedly arranged inside the needle seat. The device also includes a concealing mechanism for hiding the needle body. The concealing mechanism includes a first sliding sleeve and a second sliding sleeve. The first sliding sleeve and the second sliding sleeve are both sleeved on the outside of the needle body. The first sliding sleeve and the needle A spring is provided between the seats, and an end cover is provided on the upper end of the needle seat to limit the axial position of the second sliding sleeve, and the second sliding sleeve cooperates with the end cover to prevent rotation; the outer wall of the first sliding sleeve is protrudingly provided with Slider, the second sliding sleeve is provided with a linkage groove matching with the slider, the inner wall of the end cover is provided with a boss matching with the slider, the lower end of the boss is provided with a third slope, and the needle seat is arranged to cooperate with the lower end stopper of the slider The limit surface is located below the third slope, and the slider is misaligned with the limit surface when it is located in the linkage groove. The invention has reasonable structure and convenient operation.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a novel safety needle for matching an insulin pen. Background technique [0002] Insulin injection devices such as insulin pens and injection needles have been widely used as a tool for treating diabetes. Its main function is to accurately infuse insulin into the body of diabetic patients through the injection device to achieve the purpose of controlling blood sugar in patients, and the current demand getting bigger. [0003] A traditional common injection needle includes a needle base, a needle tube and an outer protective shell. Before use, the protective shell needs to be removed, and the insulin injection needle is directly exposed to the outside. After use, there is no safety protection structure, which makes it easy to accidentally touch the needle and cause cross-infection. At the same time, since there is no necessary protective structure, this kind of injection...

AI Technical Summary

Problems solved by technology

Before use, the protective shell needs to be removed, and the insulin injection needle is directly exposed to the outside. After use, there is no safety protection structure, which makes it easy to accidentally touch the needle and cause cross-infection.

At the same time, since there is no necessary protective structure, this kind of injection needle can be used again after use, so there is a risk of being reused

[0004] Immediately afterwards, some safe insulin needles that solve the above-mentioned common injection needle problems appeared on the market. Some existing safe insulin needles have the following disadvantages: 1. The safe insulin needle cannot protect the needle tip immediately after the injection is completed. , but after exiting the injection device such as an insulin pen, the protection mechanism can protect the needle tip, so there is still a risk of cross-infection due to accidental touch; 2. Insulin is generally injected into the subcutaneo

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