Safety vein puncture needle

Abstract

A secure vein puncture needle comprises a jacket (0), a needle pipe (1), a needle base (2), a flexible pipe (3), a spring (4), a shielding casing pipe (5), and a dividing cut-off clamp (6). The needle pipe (1) is adhered into a front end hole (2b) of the needle base (2). A convex ridge (2a) at a side wall of the needle base (2) is inserted into a longitude trench (5c) of a front segment of an inner cavity of the shielding casing pipe (5), so as to keep directions of a puncture needle tip (1a) and a handle (5b) consistent. The shielding casing pipe (5) sleeves the needle pipe (1), the needle base (2) and the flexible pipe (3). The spring (4) is compressed into a space between the shielding casing pipe (5) and a front end of the needle base (2). An end of the shielding casing pipe (5) is adhered to the flexible pipe (3) in a high-frequency heat sealing manner. The dividing cut-off clamp (6) sleeves the end of the shielding casing pipe (5). The cut-off clamp (6) is inserted into an open window (5d) of the shielding casing pipe (5). A lower segment of a pipe wall of the shielding casing pipe (5) is thickened to form a narrowed pipe cavity (5f), thereby limiting the convex ridge at the side wall. In use, the dividing cut-off clamp (6) is pressed to divide a thin side tape (5e) of the shielding casing pipe (5), so that the casing pipe (5) moves forwards under the action of the spring (4) to completely cover the puncture needle, and meanwhile, the flexible pipe (3) is closed by the cut-off clamp (6), thereby eliminating the risk of needle-stick injury and avoiding the overflow of blood, drug liquids, and body fluids in the flexible pipe (3).

Description

(1) Technical field [0001] The present invention relates to a medical device, in particular to a safety device used for sample collection in venous blood vessels (or chambers for tissues), infusion of medicinal liquid into venous blood vessels, venous blood collection and venous blood transfusion. type puncture needle. (2) Background technology [0002] When people prevent and treat diseases, they usually need to puncture the veins to collect, analyze and test the substances in the veins to obtain the physiological or pathological state of the human body; The whole body plays, compensates, replaces and treats; in the above inspection and treatment process, a venipuncture needle is needed to realize the intervention of human veins with damage, so as to establish a temporary channel from the outside to the inside of the blood vessel. [0003] During this process, the venipuncture needle has the dual functions of fixed-point intervention (into the venous blood vessel or tissue...

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; the needle tip that touches the patient's blood often causes acupuncture injuries to medical staff and waste disposal personnel, causing infection and transmission of blood-borne diseases

At present, there is no simple, economical, practical and safe technical solution disclosed at home and abroad.

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