CN202409074U - Coreless lumbar puncture needle - Google Patents

Abstract

The utility model discloses a coreless lumbar puncture needle which comprises a puncture needle body provided with a needle seat, wherein the needle body adopts a hollow structure; a drainage port is arranged on a sidewall on the rear end of the needle body; the needle seat is a plugging nut screwed on the rear end of the needle body; a sealing component extending deeply into a cavity of the needle body is fixedly connected to the centre of the plugging nut; and a scale is arranged on the surface of the needle body. The coreless lumbar puncture needle has the advantages that the structure is simple, the manufacturing and the operation are convenient, the cost is low, and the pain on a patient is relieved. Due to the regulation of the plugging nut on the rear part of the needle body, the outflow situation of cerebrospinal fluid at the drainage port can be observed at any time in a puncture process , the flow rate is controlled and the cerebral hernia caused by over-fast release of the cerebrospinal fluid can be prevented; the scale on the surface of the needle body makes the puncture depth be precise, the coreless lumbar puncture needle is particularly applicable to the patient needing repeated punctures, and the puncture time is shortened greatly; a needle core does not exist in the needle body, so that the diameter of the needle body is thinned, the partial tissue injuries caused by the puncture can be decreased, the exosmosis of the cerebrospinal fluid after the needle is withdrawn is reduced, and the occurrence probability of intracranial hypotension headache is reduced.

Description

The centreless lumbar puncture needle

Technical field

This utility model relates to lumbar puncture needle, especially relates to a kind of centreless lumbar puncture needle.

Background technology

Lumbar puncture is clinical a kind of conventional diagnosis and treatment technology.As the easiest a kind of carrying out and the minimum operation of wound, especially has important value in diagnosis and treatment central nervous system disease.The patient taked to rest the head on clinostatism when waist was worn, and bent neck, bends hip, went down on one's knees, and nursed one's knees, and made lumbar vertebra be arc processus aboralis as far as possible, was intended to make intervertebral space broadening.After pressing routine disinfection, the doctor get lumbar puncture needle vertically thrust in point of puncture subcutaneous, slow inserting needle; When getting into subarachnoid space, extract nook closing member and promptly have cerebrospinal fluid and flow out, at this moment by clinical required leave and take certain cerebrospinal fluid after; Plug nook closing member, extract puncture needle, the local gauze that covers gets final product.Many clinically needs of patients are repeatedly done the lumbar puncture art; Because the puncture needle pin of existing band inner core footpath is thicker, has strengthened patient's local tissue damage during puncture, can cause that the patient is uncomfortable; And can cause a small amount of cerebrospinal fluid to exosmose, strengthen the occurrence probability of low intracranial pressure headache; The degree of depth is difficult for grasping during puncture, and needle body need be extracted repeatedly with understanding and have or not cerebrospinal fluid to flow out, and has prolonged the operating time; In case nook closing member is extracted, drainage speed can not be controlled, if patient's cerebral is high, cerebrospinal fluid flows out excessive velocities, is prone to bring out the patient and cerebral hernia occurs, jeopardizes patient's life.

Summary of the invention

The purpose of this utility model is to provide a kind of safe in utilization, art of centreless lumbar puncture easily.

For realizing above-mentioned purpose, this utility model can be taked following technical proposals:

The described centreless lumbar puncture needle of this utility model comprises the puncture needle body that has needle stand, and said needle body is a hollow-core construction, on the sidewall of said needle rear end portion, offers draining hole; Said needle stand is the shutoff nut that is screwed in said needle rear end, is fixed with the sealing member that gos deep in the inserting needle intracoelomic cavity at the center of shutoff nut.

Said needle body surface is provided with scale.

That the advantage of this utility model is is simple in structure, be convenient to make and with low cost; Easy to operate, can reduce the patient suffering.The shutoff nut of regulating the needle body rear portion can be observed the csf flow artificial situation of draining hole at any time in piercing process, the control flow velocity prevents that cerebrospinal fluid from discharging the too fast cerebral hernia of bringing out; The scale on needle body surface makes paracentesis depth accurate, especially for shortening the puncture time greatly because of the patient who treats or diagnosis and treatment need be punctured repeatedly, alleviates patient's misery; The inner no nook closing member of needle body can alleviate needle body weight, makes the needle body variation in diameter, reduces the local tissue damage that puncture causes, and can reduce and pull out pin exosmosing of cerebrospinal fluid later on, has reduced low intracranial pressure headache odds.

Description of drawings

Fig. 1 is the structural representation of this utility model.

The specific embodiment

As shown in Figure 1, the described centreless lumbar puncture needle of this utility model comprises the puncture needle body 1 that has needle stand, and needle body 1 is the hollow-core construction of no inner core, on the sidewall of needle body 1 rearward end, offers draining hole 2; Needle stand is the shutoff nut 3 that is screwed in needle body 1 rear end, is fixed with the elastic packing piece 5 that gos deep in inserting needle body 1 inner chamber in the center of shutoff nut 3; Be provided with scale 4 on needle body 1 surface.The degree of depth of normal adult lumbar puncture is 4-5cm, can note paracentesis depth for the patient that need puncture repeatedly, patient's misery when alleviating repeated puncture; Row is during paracentesis, and the doctor is vertically thrust it subcutaneous at point of puncture, to paracentesis depth, gently revolve shutoff nut 3, slowly draining hole 2 is exposed, and observes the outflow situation of cerebrospinal fluid, detects when requiring when effusive cerebrospinal fluid amount reaches, and can puncture needle be extracted.Because needle body 1 is the hollow-core construction of no inner core, can make needle body 1 variation in diameter, reduce the local tissue damage that puncture causes, and can reduce and pull out pin exosmosing of cerebrospinal fluid later on, reduced low intracranial pressure headache odds, also be convenient to healing.

Claims (2)

1. a centreless lumbar puncture needle comprises the puncture needle body (1) that has needle stand, it is characterized in that: said needle body (1) is a hollow-core construction, on the sidewall of said needle body (1) rearward end, offers draining hole (2); Said needle stand is fixed with the sealing member that gos deep in inserting needle body (1) inner chamber for being screwed in the shutoff nut (3) of said needle body (1) rear end at the center of shutoff nut (3).

2. centreless lumbar puncture needle according to claim 1 is characterized in that: said needle body (1) surface is provided with scale (4).

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