Adjustable closed type closure lumbar puncture piezometer tube

The utility model relates to the technical field of medical instruments, in particular to an adjustable closed type closure lumbar puncture piezometric tube, which is characterized in that a needle core is pulled out of a puncture needle, the left end of a liquid level control mechanism is inserted into the puncture needle, and then the needle core is fixed on a supporting mechanism, so that spinal fluid flows into the piezometric tube; when the liquid level of spinal fluid in the pressure measuring tube is too high, the bottom of the pressure measuring tube is sealed through the liquid level control mechanism, after detection is completed, the liquid level control mechanism is taken down from the puncture needle, and then the needle core is directly inserted into the puncture needle, so that the operation difficulty of the pressure measuring tube is reduced, and the time when the intracranial subarachnoid space is communicated with the outside is shortened; the practicability of the piezometric tube is impro