Safety insulin syringe and using method thereof

Abstract

The invention discloses a safety insulin syringe which comprises a needle holder. A needle tube assembling base is arranged in the needle holder, an insulin pen puncture needle and an insulin injection needle are arranged on the upper portion and the lower portion of the needle tube assembling base respectively, a self-locking base is arranged at the other end of the needle holder, one end of the self-locking base is connected with the other end of the needle holder in a sleeved mode, a push tube is arranged in the self-locking base, one end of the push tube is located in a needle holder cavity and penetrates through the needle tube assembling base to be located in an assembling portion, the other end of the push tube abuts against a self-locking piece on the inner wall of an inner cavity of the self-locking base, an opening in the other end of the self-locking base is connected with one end of a needle protective sleeve, the other end of the needle protective sleeve is suspended in the air, and the needle protective sleeve is connected with the needle holder cavity through a spring. According to the safety insulin injection needle, a built-in safety injection needle structure is adopted, the outer portion of the insulin injection needle is sleeved with the protective sleeve which can be flexibly stretched and retracted, a self-locking mechanism is used for limiting the protective sleeve, the self-locking mechanism can be automatically opened after an insulin pen is screwed into the needle holder, the protective sleeve can produce vertical elastic displacement freely, and normal insulin injection is conducted.

Description

technical field [0001] The present invention relates to the technical field of medical devices, in particular to a safety insulin needle and its usage method, especially its mechanical connection structure. Background technique [0002] Comparative document 1, patent number: ZL200620038771.0, application date: 2006.01.06, announcement number: CN2882649, patentee: Wenzhou Beipu Technology Co., Ltd. This case discloses "a needle for insulin injection". The content of the sovereign item is: mainly including a needle holder, a needle tube is provided at the top of the needle holder, and the feature is that an internal thread is provided in the cavity of the needle holder. [0003] As can be seen from the above-mentioned existing insulin injectors, the needle points of the existing conventional insulin injectors and pen-type insulin injectors are exposed outside after use, and the safety problems are undoubtedly exposed. The structure of the existing insulin syringe is further i...

AI Technical Summary

Problems solved by technology

[0003] From the above-mentioned existing insulin syringes, it can be seen that the needle points of the existing conventional insulin syringes and pen-type insulin syringes are exposed outside after use, and the safety problems are undoubtedly exposed, and , the structure of the existing insulin syringe also has defects at the same time, so it is necessary to further improve the structure of the existing insulin syringe

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