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Suction-type lumbar puncture needle

A lumbar puncture and needle core technology, applied in the field of medical devices, can solve problems such as inconvenient use and unstable test results, so as to improve stability, improve accuracy and sensitivity, and avoid the entry of external air and bacteria Effect

Inactive Publication Date: 2020-06-02
上海裴黛模具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual TMB chromogenic reagent is composed of multiple components, which must be prepared before use, and is prone to precipitation, which is relatively inconvenient to use, and it is easy to cause unstable test results

Method used

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  • Suction-type lumbar puncture needle
  • Suction-type lumbar puncture needle
  • Suction-type lumbar puncture needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0047] Substrate chromogenic solution A: sodium molybdate 1.2g / L, citric acid 3g / L, sodium dodecylbenzenesulfonate 25ml / L; substrate chromogenic solution B: sodium sulfide 0.3g / L, ethylenediamine Tetraacetate 1.5g / L, quaternary ammonium compound 10ml / L; Chromogenic solution C: 3ml / L each of dimethyl sulfoxide and 3,3',5,5'-tetramethylbenzidine.

Embodiment approach 2

[0049] Substrate chromogenic solution A: sodium molybdate 1.35g / L, citric acid 3.25g / L, sodium dodecylbenzenesulfonate 30ml / L; substrate chromogenic solution B: sodium sulfide 0.4g / L, ethylene disulfide Amine tetraacetate 2g / L, quaternary ammonium compound 15ml / L; Chromogenic solution C: 3.5ml / L each of dimethyl sulfoxide and 3,3',5,5'-tetramethylbenzidine.

Embodiment approach 3

[0051] Substrate chromogenic solution A: sodium molybdate 1.5g / L, citric acid 3.5g / L, sodium dodecylbenzenesulfonate 35ml / L; substrate chromogenic solution B: sodium sulfide 0.5g / L, ethylene disulfide Amine tetraacetate 2.5g / L, quaternary ammonium compound 20ml / L; Chromogenic solution C: 4ml / L each of dimethyl sulfoxide and 3,3',5,5'-tetramethylbenzidine.

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Abstract

The invention provides a suction-type lumbar puncture needle. The suction-type lumbar puncture needle comprises a needle core, a positioning body, a needle main body, a lining core seat and a lengthened wing. The suction-type lumbar puncture needle is characterized in that the needle main body is provided with a three-way valve which is externally connected with a color developing liquid container; and a substrate color developing liquid A, a substrate color developing liquid B and a color developing liquid C are arranged in the color developing liquid container, wherein the substrate color developing liquid A comprises an analyzer, an anticoagulant and a surfactant A, the substrate color developing liquid B comprises a buffering agent, a complexing agent and a surfactant B, and the colordeveloping liquid C comprises 3,3',5,5'-tetramethyl benzidine and dimethyl sulfoxide. The needle main body, the three-way valve and a rubber piston are combined to form a closed space, so that external air and bacteria are prevented from entering into the closed space, and stability of detection is improved. Three main components are separated, and the corresponding anticoagulant, complexing agent, surfactant and the like are added, so that the prepared reagents have stable components and can be placed for a long time. When the suction-type lumbar puncture needle is used, the three color developing liquids are sequentially added through the three-way valve, so that accuracy and sensitivity of detection are improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a suction type lumbar puncture needle with a color indicating function. Background technique [0002] As a basic skill that clinicians must master, lumbar puncture is also a commonly used clinical examination method and diagnosis and treatment operation, which can be used to diagnose various inflammatory diseases of the central nervous system, vascular diseases, spinal cord lesions, suspected Internal space-occupying lesions, undiagnosed nervous system diseases and myelography, etc.; also used for draining (decompression) and injecting drugs to treat central nervous system diseases due to excessive cerebrospinal fluid pressure. At the same time, lumbar puncture injects local anesthetics into the subarachnoid space in the field of anesthesia to block the conduction function of some spinal nerves and cause anesthesia in the corresponding innervated area. It is widely used i...

Claims

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Application Information

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IPC IPC(8): A61B17/34
CPCA61B17/34A61B17/3401A61B17/3494
Inventor 黄福义王雪平
Owner 上海裴黛模具有限公司
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