Safe blood taking needle

Abstract

The invention provides a safe blood taking needle. The safe blood taking needle comprises a syringe body, an emitting spring, an emitting sleeve and a connecting ring; the emitting sleeve is arranged in the syringe body and can move from a first position to a second position in the direction from front to back; and at the first position, the front end of the emitting sleeve extends out of the front end of the syringe body, the rear end of a protruding strip is jointed in a tooth groove, and the connecting ring stops a core needle from moving forwards, when the emitting sleeve is moved from the first position to the second position, a pushing part drives the connecting ring to move backwards through the pushing teeth, the protruding strip is separated from the tooth groove, the teeth slide relative to the pushing part under pressing of the emitting spring so that the connecting ring can rotate, and therefore the connecting ring releases the core needle, and the core needle is emitted forwards under pushing of the emitting spring. According to the safe blood taking needle, the core needle in the syringe body is ingeniously emitted through the syringe body, the emitting spring, the emitting sleeve and the connecting ring which interact with one another, and the safe blood taking needle is easy to operate, reasonable in structure and reliable in performance.

Description

technical field [0001] The invention relates to the field of medical blood collection instruments, in particular to a safety blood collection needle. Background technique [0002] Blood collection needle is a kind of medical blood collection device. In related technologies, blood collection needles include disposable blood collection needles, which can only be fired once. The development of blood collection needles has a history of many years, and the improvement of blood collection needles has also gone through different stages. , but the lancet in the related art still has the problems of convenience in operation and safety in use. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the embodiment of the present invention proposes a safety blood collection needle with simple operation, reasonable structure and reliable performance. [0004] The safety blood coll...

AI Technical Summary

Problems solved by technology

[0002] Blood collection needle is a kind of medical blood collection device. In related technology, blood collection needle includes disposable blood collection needle, which can only be fired once. The development of blood collection needle has been There are many years of history, and the improvement of blood collection needles has also gone through different stages, but the blood collection needles in the related technology still have problems of operation convenience and use safety

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