The utility model belongs to the technical field of
lumbar puncture needles, and particularly relates to a graduated
lumbar puncture needle convenient to fix, which comprises a trocar, a graduated groove is arranged at the lower end of the trocar, a needle cap is movably mounted at the top of the trocar, and a fixing device is arranged on the outer side of the trocar. The fixing device comprises a first plastic sliding block, a second plastic sliding block, a protruding block, a mounting block, a clamping rod, a latex pad, a side plate and a
skin application. According to the
lumbar puncture needle with the scales and convenient to fix, the needle inserting depth during
lumbar puncture can be simply and conveniently determined, the puncture depth can be preset according to the positions of the first plastic sliding block and the second plastic sliding block, unnecessary
tissue damage caused by too deep puncture is prevented, meanwhile, the puncture needle can be simply and conveniently fixed to the
skin surface, and the puncture needle is convenient to use. Shaking and minimally invasive injury are reduced, and the problems that in the background technology, the exact depth of needle inserting cannot be determined, the
lumbar puncture needle can swing due to the movement of a patient, and larger
tissue damage and even
cerebrospinal fluid leakage can be caused are solved.