Bone marrow aspiration needle

The utility model discloses a puncture needle for bone marrow aspiration, comprising a cylindrical needle 1, a needle core 3, a syringe barrel 4, a piston 5 and a piston rod 6, and is characterized in that the needle core 3 is a hollow cavity 7, and the front end surface is The inclined plane 8 is provided with an elliptical suction hole 9 on the back side of the inclined plane 8. The cylindrical needle 1 is installed on the front end seat of the micro needle cylinder 10, and the hollow cavity 7 of the needle core 3 is communicated with the inner cavity of the micro needle cylinder 10. , on the outer wall of the micro-syringe 10, the syringe barrel 4 is juxtaposedly fixed. The bone marrow aspiration puncture needle can improve the operation speed because it integrates puncture and suction; due to the combination of large and small syringes, the reading of the suction volume is amplified, so it is easy to control the suction volume and control the suction. strength. In addition, bacterial infection can also be avoided.

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