CN208228980U

CN208228980U - A kind of novel seal lumbar puncture needle assembly

Info

Publication number: CN208228980U
Application number: CN201720468609.0U
Authority: CN
Inventors: 戴毅; 汪云
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-03
Filing date: 2017-05-03
Publication date: 2018-12-14
Anticipated expiration: 2027-05-03

Abstract

The utility model discloses a kind of lumbar puncture needle assemblies, including needle guard 1, needle core 2 and sealed sampling needle tubing 3, and wherein needle guard 1 is hollow tubular external member, and needle core 2 is solid needle, and tail end is provided with needle core handle, and sealed sampling needle tubing 3 can be put in needle guard 1；Wherein needle tubing 3 includes inner needle tube 7 and collecting pipe 5, and close membrane 4 is arranged in 7 front end needle mouth of inner needle tube.It can be avoided using the pure grade cerebrospinal fluid quantitative collection system of the utility model in clinical manipulation, impurity, microorganism, dissociative DNA aerosol in environment etc. enter collection system, guarantee that the cerebrospinal fluid for detection is authentic and valid.

Description

A kind of novel seal lumbar puncture needle assembly

Technical field

The utility model belongs to the field of medical instrument technology, and in particular to a kind of lumbar puncture needle assembly.

Background technique

Lumbar puncture art (hereinafter referred to as waist is worn) is a kind of from interspace of lumbar vertebrae (gap L4-L5 or the gap L3-L4) inserting needle, by Layer breaks through skin, subcutaneous tissue, ligament, endorchis, into the puncture technique of cavum subarachnoidale.Lumbar puncture art is in nerve One of clinically used inspection method of the departments such as section, neurosurgery, Infectious Disease has weight to the diagnosing and treating of the nervous system disease It is worth.It is easy to operation, it is also safer.Intracranial pressure and cerebrospinal fluid circulation system are measured by lumbar puncture art in clinic Degree of mobility, and samples of CSF is left and taken, carry out detection chemical examination.Lumbar puncture art be operation (operation of opening cranium or skull aperture) with Outside, central nervous system substance is obtained, the unique method of central nervous system pathological change situation is understood, there is important clinical application Value.

The main clinical application of lumbar puncture art includes:

1. the Diagnosis and differential diaggnosis of Infectious Diseases in Central Nervous: including purulent meningitis, Tuberculous meninx Inflammation, viral meningitis, fungal meningitis, viral encephalitis, tuberculous encephalitis etc..

2. the Diagnosis and differential diaggnosis of central nervous system autoimmune inflammatory disease: including autoimmune encephalitis, Multiple sclerosis, neuromyelitis optica, behcet disease, central nervous system vasculitis etc.

3. the Clinics and Practices of tumor disease: for diagnosing central nervous system lymphoma, meningeal leukemia, and passing through Lumbar puncture intrathecal injection chemotherapeutic drug therapy meningeal leukemia.

4. cranium pressure changes and cerebrospinal fluid circulation systemic disease: whether measurement intracranial pressure and understanding cavum subarachnoidale block, And it can suitably be depressurized according to the state of an illness.

5. the diagnosing and treating of special cerebrovascular disease: such as subarachnoid hemorrhage, can be changed by Lumbar puncture CSF and be obtained Diagnostic message, some patients can pierce into row cerebrospinal fluid displacement by waist.

6. the auxiliary diagnosis of nervous system degenerative disease, Inherited Metabolic Disorders: such as Alzheimer disease, sporadic CJD, brain Leukodystrophy etc., special detection helps to diagnose in cerebrospinal fluid.

Utensil used in lumbar puncture is lumbar puncture needle, at present common lumbar puncture needle include hollow syringe needle, needle stand and Needle core, syringe needle tail connect needle stand.Before puncture, first by needle core insertion needle cavity, after syringe needle enters human body together with needle core, need by Needle core is extracted out of syringe needle cavity, and cerebrospinal fluid is flowed out out of syringe needle cavity, after estimating cerebrospinal fluid and stablizing outflow, medical worker's benefit It is collected with vessel, further chemical examination detection.

In the above method for collecting cerebrospinal fluid, samples of CSF sampling process is directly exposed to ambient enviroment, sample reception In the process inevitable that substance (particle, microorganism, cell, free nucleic acid aerosol etc.) mixes in environment, thus shadow Ring the accuracy of subsequent detection result.It can not especially judge detected substance (microorganism, cell, DNA, RNA etc.), very Just from central nervous system or in environment and/or human peripheral's tissue.Even if in the hand with laminar flow apparatus In art room, the quantity of microorganism can only be also controlled, around in free nucleic acid aerosol, human body cast-off cells, waist break-through road The cell of tissue not can be removed still.Thus cause testing result very uncertain, detection data has large error, into And influence medical diagnosis on disease and treatment.

In addition, with the fast development of clinical medicine, molecular biology, the detection method of cerebrospinal fluid and that can be detected micro- Amount ingredient deepens continuously, and has been focused on central nervous system DNA level and polypeptide, protein level detection.Original lumbar puncture needle The disadvantages mentioned above that method is worn with waist, it is huge and irreconcilable to new detection interference.Therefore, it is highly desirable to adopt using a kind of new Collection tool, to overcome many deficiencies present in original acquisition method.

Summary of the invention

In order to solve to design insufficient and thus presence during caused cerebrospinal fluid collection existing for existing lumbar puncture needle The problem of pollution, the present invention propose a kind of improved lumbar puncture needle sub-assembly, and specific technical solution is as follows:

A kind of lumbar puncture needle assembly, including needle guard 1, needle core 2 and sealed sampling needle tubing 3, wherein needle guard 1 is sky Central, tubular external member, needle core 2 are solid needle, and tail end is provided with needle core handle, and sealed sampling needle tubing 3 can be put in needle guard 1；Pillow 2 and sealed sampling 3 outer surface of needle tubing the engaging device that matches with 1 hollow sleeve of needle guard is set；Wherein sealed sampling needle tubing 3 Including inner needle tube 7 and collecting pipe 5, close membrane 4 is arranged in 7 front end needle mouth of inner needle tube, and close membrane 4 is the molten film of cold water, no The needle mouth of inner needle tube 7 can be only sealed, while rapidly dissolvable with cerebrospinal fluid.

The needle guard 1 is hollow tubular external member, is combined and is formed by hollow pipe needle and hollow sleeve, and the one side setting of hollow sleeve is stung Card slot is closed, scale is carved on needle guard 1,0. 8 ~ 1.2 millimeters of the outer diameter of hollow pipe needle, 0.5 ~ 0.9 millimeter of internal diameter is, it is preferable to use outer 1.0 millimeters of diameter, 0.7 millimeter aperture of internal diameter；Length is 3.5 ~ 9 centimetres, and preferably 4 centimetres or 8.5 centimetres, wherein 4cm is suitble to children It uses, 8.5cm is suitble to adult use.

The needle core 2 is solid needle, and tail end is provided with needle core handle, and needle core handle outer surface is provided with hollow with needle guard 1 The engaging device matched is covered, the effect of needle core 2 is prevented in puncture process, blood, tissue fluid and cerebrospinal fluid outflow.

In needle tubing 3, close membrane 4 and inner needle tube 7, collecting pipe 5 form confined space, and close membrane 4 is that cold water is molten Film and cerebrospinal fluid mixing can flash melt be liquid.

Needle tubing 3 is being closed intact using preceding, and inside setting range is -0.01Mpa to -0.1Mpa negative pressure, different to bear Pressure and volume control the sampling quantity of collecting pipe 5.Collecting pipe 5 is labeled with scale, can observe the cerebrospinal fluid of quantitative collection. The volume of collecting pipe 5 is 1000-2000uL(allowable error 20uL), surface is labeled with volume scale.

The lumbar puncture needle assembly is placed in needle guard 1 using preceding needle core 2, needle guard 1 and needle when use 2 sub-assembly of core, which first punctures, enters interspace of lumbar vertebrae, and wait reach in dura mater, after cavum subarachnoidale, needle core 2 is pulled out, routinely Method measures intracranial pressure, collects cerebrospinal fluid.Waist wears final step before end, and needle tubing 3 is put in needle guard 1, can be automatic Quantitatively leave and take spinal fluid samples.

The leakproofness lumbar puncture needle assembly that the utility model is proposed is improved existing by setting needle tubing 3 The structure of lumbar puncture needle, the beneficial effect realized have following aspects:

1. the water-soluble closed film of innovative design, to avoid in clinical manipulation, microorganism, dissociative DNA in environment Aerosol etc. enters collection system, guarantees that detection source is authentic and valid, guarantees that the CSF sample of acquisition really reflects nervous centralis System situation.

2. quantitative pure grade cerebrospinal fluid collection device is arranged, collecting pipe collects quantitative cerebrospinal fluid automatically, substantially increases certainly Dynamicization and precision collection technique.Realize first use, it is quantitative inaccurate to effectively prevent sampling for the quantitative effect of automatic and accurate Really, to the adverse effect of testing result.

3. leakproofness lumbar puncture needle assembly of the invention can be completed at the same time routine lumbar and wear in once-through operation The intracranial pressure that thorn needs measures (puncture of needle guard 1), routine leaves and takes cerebrospinal fluid and quantitative pure grade cerebrospinal fluid is collected.Concrete operations In, after completing normal work to do, seamless connection using quantitatively pure grade cerebrospinal fluid collection system, is worn jointly with traditional waist at one System.Avoid the pain that patient repeatedly punctures.Entire design applicability is strong, securely and reliably.

Detailed description of the invention

Fig. 1 is the schematic diagram of lumbar puncture needle assembly needle guard, and 1 is needle guard

Fig. 2 is the sub-assembly of needle guard and needle core, and 1 is needle guard, and 2 be needle core

Fig. 3 is the sub-assembly of needle guard and needle tubing, and 1 is needle guard, and 3 be needle tubing, and 4 be close membrane, and 5 be collecting pipe, and 6 be spiral Bayonet, 7 be inner needle tube

Specific embodiment

A kind of lumbar puncture needle assembly, including needle guard 1, needle core 2 and sealed sampling needle tubing 3, wherein needle guard 1 is hollow Tubular sleeve, needle core 2 are solid needle, and tail end is provided with needle core handle, and needle tubing 3 can be put in needle guard 1；

Needle tubing 3 includes inner needle tube 7 and collecting pipe 5, and the water-soluble film of close membrane 4(cold water is arranged in 7 front end needle mouth of inner needle tube, is met Cerebrospinal fluid is rapidly dissolvable).3 inner cavity of needle tubing forms enclosure space, inside sets -0.04MP negative pressure, and 5 volume of collecting pipe is 1000 uL.

Needle guard 1 is combined by hollow pipe needle and hollow sleeve and is formed, and engaging device, hollow pipe wire surface is arranged in hollow sleeve side It is provided with length scale.The aperture of 1 hollow pipe needle of needle guard is 1.0 millimeters, and length is 8.5 centimetres；2 tail end of needle core is set It is equipped with needle core handle, needle core handle side is provided with the engaging device matched with 1 hollow sleeve of needle guard.Sealed sampling needle tubing 3 5 outer surface of collecting pipe setting spiral bayonet matched with hollow sleeve inner surface spiral bayonet.

Claims

1. a kind of lumbar puncture needle assembly, including needle guard (1), needle core (2) and sealed sampling needle tubing (3), wherein needle guard (1) For hollow tubular external member, needle core (2) is solid needle, and tail end is provided with needle core handle, and sealed sampling needle tubing (3) can be put in needle guard (1) in；

The sealed sampling needle tubing (3) includes inner needle tube (7) and collecting pipe (5), and close membrane (4) are arranged in inner needle tube (7) needle mouth, The close membrane (4) is the water-soluble film of cold water.

2. lumbar puncture needle assembly according to claim 1, it is characterised in that the needle guard (1) is by hollow pipe needle and sky Heart set combination is formed, and the one side setting occlusion card slot of hollow sleeve, hollow pipe wire surface is provided with scale.

3. lumbar puncture needle assembly according to claim 1, it is characterised in that needle core (2) tail end is provided with needle core Handle, needle core handle are provided with the tooth engaged matched with needle guard (1) hollow sleeve occlusion card slot on one side.

4. lumbar puncture needle assembly according to claim 1, it is characterised in that the close membrane (4) is that cold water is water-soluble thin Film, after being contacted with cerebrospinal fluid, can flash melt be liquid.

5. lumbar puncture needle assembly according to claim 1, it is characterised in that sealed sampling needle tubing (3) is before use Close intact, inside setting range is -0.01Mpa to -0.1Mpa negative pressure.

6. lumbar puncture needle assembly according to claim 1, it is characterised in that collecting pipe (5) volume is 1000- 2000uL, surface are labeled with volume scale.

7. lumbar puncture needle assembly according to claim 1, it is characterised in that collecting pipe and sampling needle are with screw occlusion Mouth connection, after collection, can screw off collecting pipe, ferrule rubber plug self-closed.

8. lumbar puncture needle assembly according to claim 1, it is characterised in that the aperture of needle guard (1) the hollow pipe needle It is 0. 8 ~ 1.2 millimeters of outer diameter, 0.5 ~ 0.9 millimeter of internal diameter.

9. lumbar puncture needle assembly according to claim 1, it is characterised in that needle guard (1) the hollow pipe needle uses outer 1.0 millimeters of diameter, 0.7 millimeter aperture of internal diameter；Length is 3.5 ~ 9 centimetres.

10. lumbar puncture needle assembly according to claim 1, it is characterised in that needle guard (1) the hollow pipe needle length It is 4 centimetres or 8.5 centimetres.