Novel sealed lumbar puncture needle assembly and pure cerebrospinal fluid quantitative collection system

Abstract

The invention discloses a lumbar puncture needle assembly and a cerebrospinal fluid quantitative collection system. The lumbar puncture needle assembly comprises a needle sleeve 1, a needle core 2 anda sealed sampling needle tube 3, wherein the needle sleeve 1 is a hollow tubular sleeve, the needle core 2 is a solid needle with the tail end provided with a needle core handle, and the sealed sampling needle tube 3 can be placed in the needle sleeve 1; the needle tube 3 comprises an inner needle tube 7 and a collection tube 5, and a sealing membrane 4 is arranged at the front-end needle openingof the inner needle tube 7. When the lumbar puncture needle assembly is in use, an assembly of the needle sleeve 1 and the needle core 2 is inserted into the lumbar vertebra, then the needle core 2 is pulled out, the needle tube 3 is placed in the needle sleeve 1, and after the sealing membrane 4 is melted, a solution is collected by the collection tube 5. By adopting the cerebrospinal fluid quantitative collection system, microorganisms, free DNA aerosols and the like in the environment can be prevented from entering the collection system during clinical operation, and it is guranateed thata detection source is real and effective.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a lumbar puncture needle and a pure-grade quantitative cerebrospinal fluid collection system. Background technique [0002] Lumbar puncture (hereinafter referred to as lumbar puncture) is a puncture in which a needle is inserted from the lumbar intervertebral space (L4-L5 space or L3-L4 space), breaking through the skin, subcutaneous tissue, ligament, and dura mater layer by layer, and entering the subarachnoid space. technology. Lumbar puncture is one of the commonly used clinical examination methods in neurology, and it is of great value in the diagnosis and treatment of neurological diseases. The operation is simple and easy, and it is also relatively safe. In clinical practice, lumbar puncture is used to measure the intracranial pressure and the patency of the cerebrospinal fluid circulation system, and cerebrospinal fluid samples are collected for testing and testi...

AI Technical Summary

Problems solved by technology

[0013] In order to solve the problem of insufficient design of existing lumbar puncture needles, which leads to pollution in the process of collecting cerebrospinal fluid, the present invention proposes an improved new lumbar puncture needle assembly, and the specific technical solution is as follows:

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