Disposable safety vein puncture needle

Abstract

The present invention provides a disposable safe intravenous puncture needle which is composed of puncture neilsbed, limiting cable, protective spring, protective sleeve and pincture needle. The protective sleeve forms a device with the puncture neilsbed (by lock catch consisted of the protective sleeve heave structure and the puncture neilsbed flute, locating surface consisted of the protective sleeve upper conical surface and the puncture neilsbed down conical surface), but the protective spring and limiting cable are shrinked hidden in the device (the protective spring has same length with the limiting cable, and both ends cement together). The puncture needle inserts into the puncture neilsbed and fixed cements with the puncture neilsbed by the protective sleeve and protective spring, the form is in accord with traditional puncture needle. When transfusion is finished and the puncture needle is pulled out, the protective sleeve can be released by turning the stripe shape heave of the protective sleeve, and the puncture needle is protected in the protective sleeve and can not be pulled out. So the intravenous puncture needle can be reliable protected after clinic using, and can avoid accidentally injery by needle puncturing.

Description

technical field [0001] The present invention relates to a disposable safe venipuncture needle widely used for medical purposes. Background technique [0002] Disposable venipuncture needle is an indispensable medical device in the process of intravenous infusion, blood collection and treatment. Most of the venipuncture needles currently used clinically are provided with a plastic sleeve on the surface of the needle body of the venipuncture needle to prevent the needle body from being polluted; when in use, the plastic sleeve must be removed before performing the venipuncture operation. There is no special storage device. When the infusion is completed, the plastic sleeve often disappears and cannot protect the used needle tip. Injury may occur. [0003] There are also units or individuals in China who have conducted research on this issue, such as: ZL: 02112068.4, which describes "a single-wing infusion needle with a safety device" and ZL: 02112106.0, which describes "an i...

AI Technical Summary

Problems solved by technology

However, its structure has certain shortcomings in clinical operation: its infusion needle sheath is located at one end of the infusion needle hose (near the infusion filter side) when it leaves the factory, and the body surface of the infusion needle still needs a protective cover for the production unit. It causes waste. In addition, the safety device is a circular tube without a hand-held structure. When in use, the infusion needle ...

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