Retracting needle head device and blood taking needle and infusion needle prepared therefrom
A technology of blood collection needles and needles, which is applied in the direction of needles, blood sampling devices, and instruments introduced into the body, etc. It can solve the problems of medical personnel infection, high production costs, stab wounds, etc., and achieve the effect of protecting medical personnel and preventing accidental stab wounds
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[0029] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples.
[0030] In this manual, the direction of the needle is front, and the opposite direction is back.
[0031] Such as Figure 2-Figure 7 , the needle of the safety blood collection needle includes: a retractable blood collection needle, including: needle seat 3, needle tube 2, needle cover 1, protective body 4, the body of the needle seat 3 is in the shape of a double trident connection, and the needle cover 1 is set on the needle seat 3 Outside the front end, the inside of the front end of the needle hub 3 is bonded to the needle tube 2 by adhesive, and an inner interface is provided at the rear end of the needle hub 3 , and the needle hub 3 is buckled in the cavity of the protective body 4 .
[0032] One end of four elastic strips 39 is fixed in the middle of the body of the needle base 3, and the other end of the elastic strip...
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