Novel lumbar puncture needle capable of realizing semi-automatic needle insertion

Abstract

The invention relates to a novel lumbar puncture needle capable of realizing semi-automatic needle insertion, belongs to the technical field of medical instruments, solves the problems of needle head displacement and too deep needle insertion caused by manual needle pushing in the existing lumbar puncture, and enables the needle insertion process to be more accurate and stable. The novel lumbar puncture needle structurally comprises a needle head, an electromagnetic three-way valve, an optical fiber sensor, a pressure sensor, a sensor shell, a stepping motor, a needle inserting track and a puncture needle shell, wherein the needle head is connected with the electromagnetic three-way valve. After cerebrospinal fluid flows in, three functional states are realized along with reversing of a valve core; the optical fiber sensor can be used for directly measuring the pressure of the cerebrospinal fluid; the stepping motor drives the needle head to slowly advance along a needle inserting track at a constant speed, so that needle inserting errors caused by manual needle pushing are avoided; and the pressure sensor measures the needle insertion resistance and provides a judgment basis for the needle insertion depth. Through semi-automatic reversing of the electromagnetic three-way valve, measurement of the pressure of the cerebrospinal fluid by the optical fiber sensor, constant-speed slow needle insertion driven by the stepping motor, and real-time reflection of needle insertion resistance by the pressure sensor, accurate and efficient lumbar puncture operation is realized.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a novel lumbar puncture needle capable of semi-automatic needle insertion. Background technique [0002] Lumbar puncture is an important means of diagnosis for many infectious and non-infectious neurological diseases, and it is also an important treatment modality. Clinically, lumbar puncture is often performed in the following three situations: assessment of intracranial pressure and cerebrospinal fluid components, therapeutic reduction of intracranial pressure, and administration of intrathecal drugs or myelography. [0003] The procedure for a lumbar puncture is as follows: [0004] 1. The patient is lying on the left side, curled up like a fetus to fully expose the intervertebral space; [0005] 2. Local disinfection and multi-point layer-by-layer infiltration anesthesia; [0006] 3. The puncture needle enters the subarachnoid space through the L3-4 or L4-5 interve...

AI Technical Summary

Problems solved by technology

[0010] In view of the above analysis, the present invention aims to provide a new type of lumbar puncture needle that can insert the needle semi-automatically, so as to solve the problems of needle displacement and excessive needle insertion caused by manual needle insertion in the existing lumbar puncture operation

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