Safeguard protection setting for expendable needle in use for medical treatment

Abstract

A disposable safety protection device for medical devices suitable for various medical needles with needle holders, consisting of needle holders and buckle covers. Its characteristics are: the free catheter tube in the middle of the needle seat has a thin wall, and there is no needle seat wall covering, so that it is easy to be pierced by the sharp object in the push handle after the cover is closed on the needle seat, making the needle seat and even the entire medical needle invalid. , to achieve the effect of one-time use only; the difference in the complementary shape between the fixed seat of the needle seat wall and the rotating wheel of the buckle cover and the fitting surface of the rotating wheel shaft, and the side surface of the rotating wheel in contact with the rotation of the needle seat wall is irregularly circular , can control the ratchet rotation of the whole buckle cover, so that the buckle cover can stay in the desired position; The fixed cavity wraps the needle tip so that it can be safely and securely protected after the needle holder is closed by the button cover.

Description

Technical field: [0001] The invention relates to medical needles with needle holders in medical devices, such as injection needles, infusion needles, blood-drawing needles, venous indwelling needles, puncture needles, etc., especially safety protection devices for single-use medical needles with needle holders . Background technique: [0002] With the gradual understanding of infectious pathogens, the majority of medical workers have realized the necessity of using medical needles with safety protection devices to avoid accidental stab wounds during treatment and lead to blood-borne pathogen infection, and only once The importance of sexual use devices in preventing cross-sexual infection. In the past two years, many syringes, infusions or blood drawers with self-destructive use devices or safety protection devices with different designs have been born in the domestic and foreign markets. Because these design devices focus on the safety effect of the overall self-destruct ...

AI Technical Summary

Problems solved by technology

In foreign countries, many scholars have studied the safety device of injection needles. The most successful inventor is Hollister, William H. His "Safety Needle Container", US Patent No. 4,982,842, mainly solves the problem of one-handed operation and one-time locking. Rear needle body, and reducing the dead space of the liquid medicine, etc., but it is only a safety accessory assembled on the needle seat of the injection needle. Its locking of the needle body after use does not mean destruction. Opening its locking device maliciously, The injection needle can still be used again, and it does not have a positioning function for the rotation of the needle sheath, and cannot be applied to the current requirements for the sheath positioning of various advanced medical needles during operation, so it needs to be improved

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