Anti-puncture remaining needle assembly

[0048] Example 1: Reference figure 1 —9. An anti-needle indwelling needle assembly, comprising a puncture assembly, a hose seat, and a tube 1, wherein the anti-needle indwelling needle assembly also includes an anti-needle assembly;

[0049] The puncture assembly includes a needle holder 2 and a steel needle 3 mounted on the needle holder, and the steel needle is provided with a protrusion 4 larger than the outer diameter of the steel needle;

[0050] The hose seat includes a hose seat body 5 and a side tube 6; the hose seat body is provided with a cavity penetrating the hose seat body, and an isolation plug 7 is installed in the cavity; the cavity above the isolation plug is In the injection cavity 8, the side tube is installed on the hose seat body where the injection cavity is located and communicates with the injection cavity; the side of the hose seat body under the isolation plug is provided with a gap 9;

[0051] The hose is installed in the injection cavity and extends upward to

[0062] Example 2: Reference figure 1 , figure 2 , Picture 9 In the acupuncture-resistant indwelling needle assembly described in embodiment 1, the acupuncture-resistant shrapnel includes a limit seat; the limit seat includes a bottom plate 111, a middle baffle 112 and a first connecting plate 113, the bottom plate and The middle baffle is arranged horizontally and the middle baffle is arranged above the bottom plate, the first connecting plate is fixedly connected with the bottom plate and the middle baffle respectively; the bottom plate and the middle baffle are respectively provided with a limit hole 114 and a passage 115, and the limit hole The outer diameter is larger than the outer diameter of the steel needle but smaller than the outer diameter of the protrusion, and the length and width of the passage are greater than the outer diameter of the protrusion;

[0063] An upwardly extending elastic arm 116 is fixed on the middle baffle plate, and the abutting piece is fixed on th

[0072] Example 3: Reference Picture 9 In the anti-needle indwelling needle assembly described in embodiment 2, the first connecting plates are respectively fixedly connected to the bottom plate and the end of the middle baffle on the same side away from the elastic arm.

[0073] The parts of the anti-needle shrapnel are connected end to end, and the structure is more integrated.