Novel safe needle used with insulin pen

Abstract

The invention discloses a novel safe needle used with an insulin pen. The needle comprises a needle base and a needle body. The needle body is fixedly arranged inside the needle base. The needle alsocomprises a hiding mechanism for hiding the needle body. The hiding mechanism comprises a first sliding sleeve and a second sliding sleeve. The needle body is sleeved with the first sliding sleeve andthe second sliding sleeve. A spring is abutted between the first sliding sleeve and the needle base. An end cap for axially limiting the second sliding sleeve is disposed at the upper end of the needle base, and the second sliding sleeve and the end cap are matched in a rotation stopping mode. A slider is arranged on the outer wall of the first sliding sleeve in a protruding mode. The second sliding sleeve is provided with a linkage groove matched with the slider. The inner wall of the end cap is provided with a boss matched with the slider. A third inclined face is arranged at the lower endof the boss. The needle base is provided with a limiting face matched with the lower end of the slider in a stopping mode. The limiting face is located below the third inclined face. The slider is dislocated from the limiting face when located in the linkage groove. The novel safe needle is reasonable in structure and convenient to operate.

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 also 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 subcutaneous tissue layer instead of the muscle layer. Because the muscle layer absorbs quickly, it is easy to cause blood sugar fluctuations, so in many cases, the needle needs to be inserted at a 45° angle during injection, and some existing safety insulin injection needles, due to the structure of the needle sheath, make the needle When the injection needle is used, it can only be inserted at an angle of 90°, so when the needle is long or the subcutaneous tissue layer of the patient is thin, it not only increases the difficulty of operation, but also makes the injection more risky or even impossible to complete the injection; Needle sheath and other structures have a relatively large needle insertion resistance during injection, which makes the patient experience poor and increases the difficulty of operation; 4. Many similar safe insulin needles on the market have complex structures and high manufacturing and use costs. financial burden on people with diabetes

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