A safety venipuncture needle

Abstract

The invention relates to a safety vein puncture needle, which consists of a sheath, a needle tube, a needle base, a hose, a spring, a shielding sleeve and a disconnection cut-off clamp, wherein the needle tube is inserted and bonded at the front end of the needle base; the needle base is inserted into a longitudinal groove in an inner cavity of the front section of the shielding sleeve by a side wall ridge and is positioned, so that the direction of a cutting edge of a puncture needle tip is consistent with that of a handle; the shielding sleeve is sleeved outside the needle tube, the needle base and the hose; the spring can be compressed in space of the shielding sleeve and the front end of the needle base; the tail end of the shielding sleeve is bonded with the hose by high-frequency heat seal; the disconnection cut-off clamp is sleeved on the tail section of the shielding sleeve, and is inserted into an opening window of the shielding sleeve; and the wall of the lower section of the shielding sleeve is thickened to form a constricted pipe cavity, so that the side wall ridge at the front end of the needle base can be limited. When the puncture needle is used, a thin bridle of the shielding sleeve can be disconnected only by pinching the disconnection cut-off clamp, so that the shielding sleeve moves forwards under the acting force of the spring to cover the puncture needle completely, and the hose is closed by the cut-off clamp to the risk of needling harm, prevent bloodstain, liquid medicine and body fluid in the hose from overflowing and reduce the propagation of hematogenic diseases.

Description

(1) Technical field [0001] The present invention relates to a medical device, in particular to a safety device used for the collection of specimens in venous blood vessels (which can also be chambers used for tissue), the infusion of medicinal liquids into the venous blood vessels, venous blood collection and venous blood transfusion. type puncture needle. (2) Background technology [0002] In the prevention and treatment of diseases, people usually need to puncture the venous blood vessels, collect, analyze and test the substances in the venous blood vessels to obtain the physiological or pathological state of the human body; also often by puncturing the venous blood vessels, infusion of medicinal liquids such as venous blood vessels to achieve The whole body plays, compensates, replaces and treats; in the above inspection and treatment process, a venipuncture needle is needed to achieve the intervention of the human veins and blood vessels, so as to establish a temporary c...

AI Technical Summary

Problems solved by technology

[0004] At present, various venipuncture needles (infusion needles, blood transfusion needles, blood collection needles, biopsy needles, indwelling needles, etc.) After the venipuncture needle is used in the above environment, the needle tip of the venipuncture needle is exposed outside, and ...

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