A safe bone marrow aspiration needle

The utility model discloses a safe bone marrow aspiration needle, comprising a needle sleeve, a protective sleeve, a threaded barrel, a penetrating needle barrel, a needle-reducing knob, a threaded knob and a needle core. One end of the needle sleeve is fixed with a protective sleeve, and the protective sleeve is communicated with the inner wall of the needle sleeve, the inner wall of the needle sleeve is provided with a thread, the inner wall of the needle sleeve is threadedly connected with a threaded barrel, and the threaded barrel is close to one end of the protective sleeve A penetrating needle barrel is fixed, and the penetrating needle barrel is communicated with a threaded barrel, the threaded barrel is slidably connected with the inner wall of the protective sleeve, and one end of the threaded barrel away from the penetrating needle barrel is fixed with a narrowing knob through the needle sleeve, And a threaded hole is opened in the middle of the narrowing knob, the inner wall of the threaded hole is threadedly connected with a threaded knob, the end of the threaded knob close to the protective sleeve is fixed with a needle core, and the needle core is inserted into the penetrating needle cylinder, this safety type Bone marrow aspiration needles are safe to use to prevent piercing through the needle and hurting people.

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