CN218979128U

CN218979128U - Lumbar puncture needle

Info

Publication number: CN218979128U
Application number: CN202222362339.9U
Authority: CN
Inventors: 王佳伟; 刘新语
Original assignee: Beijing Tongren Hospital
Current assignee: Beijing Tongren Hospital
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-05-09
Anticipated expiration: 2032-09-06

Abstract

The utility model discloses a lumbar puncture needle, which comprises: the needle comprises a needle head, a first needle core and a second needle core, wherein one end of the needle head is a puncture end, the other end of the needle head is an integrally formed T-shaped end, and a through hole communicated with the two ends is formed in the needle head; the first needle core is a first thin needle provided with a handheld end, and the first thin needle can penetrate through a through hole of the needle head; the second needle core is a second thin needle provided with a clamping end, a through needle core through hole is formed in the second needle core, the second thin needle is positioned at one side of the clamping end, a hose is arranged at the other side of the clamping end, and the through needle core through hole of the second thin needle is communicated; the second thin needle can penetrate through the through hole of the needle head, and the clamping end is positioned outside the T-shaped end. According to the utility model, by arranging two needle cores, the first needle core is used for puncturing, after 2-3ml of liquid to be detected flows out, the second needle core is replaced, the test tube is replaced, and the specimen for pathogen detection is reserved, so that the pollution of air and skin field planting bacteria is avoided to a certain extent, and the problem that the specimen is easy to pollute in the process of reserving and taking the specimen is solved.

Description

Lumbar puncture needle

Technical Field

The utility model belongs to the technical field of medical appliances, relates to the direction of lumbar puncture appliances, and in particular relates to a lumbar puncture needle.

Background

Lumbar puncture is one of the common examination means in neurology, and the examination of the etiology of cerebrospinal fluid has an irreplaceable role in the diagnosis of nervous system infections and immune diseases. Macrogenomic second generation sequencing allows non-targeted detection of nucleic acids from pathogens such as bacteria, fungi, viruses and parasites present in clinical specimens.

However, with the improvement of specimen detection technology, the demands on specimen collection and management are increasingly significant. In the process of reserving a sample, the current lumbar puncture device widely applied in clinic is easy to be influenced by skin field planting bacteria, cerebrospinal fluid is possibly polluted by the cerebrospinal fluid sample by directly contacting air, and whether the sample is a pathogenic pathogen or not is difficult to judge after the microorganism is detected, so that clinical diagnosis and treatment and even prognosis of a patient are influenced.

Disclosure of Invention

The utility model provides a lumbar puncture needle, which aims to solve the problem that specimens are easy to pollute in the process of reserving specimens.

A lumbar puncture needle comprising: a needle head, a first needle core and a second needle core,

one end of the needle head is a puncture end, the other end of the needle head is an integrally formed T-shaped end, and a through hole for communicating the two ends is formed in the needle head;

the first needle core is a first thin needle provided with a handheld end, the first thin needle can penetrate through a through hole of the needle head, and the radial diameter of the handheld end is larger than that of the through hole along the radial direction of the needle head;

the second needle core is a second thin needle provided with a clamping end, a needle core through hole penetrating through the clamping end and the second thin needle is formed in the second needle core, the second thin needle is positioned on one side of the clamping end, a hose is arranged on the other side of the clamping end, and the needle core through hole is communicated with the second thin needle;

the second fine needle can penetrate through the through hole of the needle head, the radial diameter of the clamping end is larger than that of the through hole along the radial direction of the needle head, and the clamping end is located outside the T-shaped end.

Further, one end of the hose is communicated with the needle core through hole of the second fine needle, and the other end of the hose is a metal tip part so as to be capable of penetrating through a rubber pipe orifice.

Further, a pressure sensor is arranged on the hose to detect intracranial pressure in the prone position.

Further, the puncture end of the needle head is a round head with a smooth outer surface, and a needle hole communicated with the through hole is formed in the puncture end; the tips of the first needle core and the second needle core are cones and penetrate through the round head puncture end of the needle head.

Further, an integrally formed needle protrusion is provided on the needle at a position near the T-shaped end.

Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a lumbar puncture needle, which is characterized in that two needle cores are arranged, a first needle core is used for puncturing, after 2-3ml of liquid to be detected flows out, a second needle core is replaced, a test tube is replaced, a specimen for pathogen detection is reserved, the pollution of air and skin field planting bacteria is avoided to a certain extent, and the second needle core is used for reserving the specimen and hardly contacting with the external air. The pressure measurement can be accurately performed in the use process, so that the lumbar puncture operation is more concise.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

FIG. 1 is a schematic view of a needle in an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a first core pin according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a second core according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a second core sample with a needle inside according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a structure in which a piercing end of a first core disposed in a needle is a round head according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a structure in which a piercing end of a second core disposed in a needle is a round head according to an embodiment of the present utility model;

reference numerals in the drawings:

1-a needle head, 2-a first needle core, 3-a second needle core, 4-a test tube, 5-a rubber tube orifice and 6-a pressure sensor;

11-T-shaped end, 12-through hole, 13-needle head protrusion, 14-needle hole, 21-hand-held end, 22-first thin needle, 31-clamping end, 32-second thin needle, 33-needle core through hole, 34-hose and 35-metal tip.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 4, a lumbar puncture needle comprising: the needle head 1, the first needle core 2 and the second needle core 3, one end of the needle head 1 is a puncture end, the other end is an integrally formed T-shaped end 11, and a through hole 12 communicated with two ends is formed in the needle head 1.

The first needle core 2 is a first thin needle 22 provided with a hand-held end 21, the first thin needle 22 can penetrate through the through hole 12 of the needle head 1, and the radial diameter of the hand-held end 21 is larger than that of the through hole 12 along the radial direction of the needle head 1, so that the hand-held end 21 is positioned outside the T-shaped end 11.

The second needle core 3 is a second fine needle 32 provided with a clamping end 31, a needle core through hole 33 penetrating through the clamping end 31 and the second fine needle 32 is formed in the second needle core 3, the second fine needle 32 is located on one side of the clamping end 31, a hose 34 is arranged on the other side of the clamping end 31 and is communicated with the needle core through hole 33 of the second fine needle 32, and cerebrospinal fluid can flow out of the closed cavity along the needle core through hole and the hose.

The second fine needle 32 may penetrate through the through hole 12 of the needle 1, and the radial diameter of the engaging end 31 is greater than the radial diameter of the through hole 12 along the radial direction of the needle 1, so that the engaging end 31 is located outside the T-shaped end 11.

The lumbar puncture needle disclosed by the utility model is provided with two needle cores, the first needle core 2 is used for puncture, after 2-3ml of liquid to be detected flows out, the second needle core 3 is replaced, the test tube 4 is replaced, and a specimen for pathogen detection is reserved, so that the pollution of skin field planting bacteria is avoided to a certain extent. The second needle core 2 is provided with a hollow needle core through hole 33, and cerebrospinal fluid flows out from the inside of the second needle core 2, so that the second needle core 3 can hardly contact with the external air in the process of reserving a specimen.

In an alternative embodiment, one end of the hose 34 is connected to the core through hole 33 of the second fine needle 3, and the other end is a metal tip 35 so as to be capable of penetrating a rubber nozzle. In the puncturing operation, the metal tip 35 can penetrate through the rubber pipe orifice into the closed cavity, and a test tube 4 with the rubber pipe orifice 5 is generally selected, so that after the hose 34 is inserted into the rubber pipe orifice 5 of the test tube 4, the hose 34 is tightly wrapped by the rubber shrinkage due to the shrinkage effect of the hose, the tightness is better, and the cerebrospinal fluid can hardly contact with the air in the outflow process, so that the pollution of microorganisms in the air is avoided. The hose 34 is therefore chosen to have a metal tip 35 for facilitating penetration of the rubber nozzle 5.

In this embodiment, a pressure sensor 6 is provided on the hose 34 to detect intracranial pressure in the prone position.

As shown in fig. 2 and 4, in general, the piercing end of the needle 1 is a bevel, and the tips of the first needle core 2 and the second needle core 3 are bevel with the same inclination angle, so as to facilitate piercing.

In an alternative embodiment, as shown in fig. 5 and 6, the piercing end of the needle 1 may also be a round head with a smooth outer surface, a pinhole 14 communicating with the through hole 12 is provided on the piercing end, and the tips of the first needle core 2 and the second needle core 3 are cone-shaped and penetrate through the round piercing end of the needle 1.

After the needle 1 is inserted in a puncturing manner, the round head can be used for pulling out the tail of a horse or free nerve roots, so that secondary damage to nerves caused by inserting a pointed needle tube is avoided, and liquid to be collected can flow into the through hole 12 of the needle 1 through the needle hole 14. The round head can also reduce dura mater leakage and reduce the occurrence of low cranium pressure head pain after lumbar puncture.

An integrally formed needle protrusion 13 is provided on the needle 1 at a position close to the T-shaped end 11. The needle protrusion 13 can prevent the needle 1 from completely immersing into the skin and the cerebrospinal fluid from flowing down along the skin during the use of the patient suffering from obesity.

Taking cerebrospinal fluid as an example, the novel lumbar puncture provided by the utility model has the following using flow:

1. two test tubes are prepared firstly, wherein the test tube No. 1 is a common sterile tube, the left cerebrospinal fluid is sent to non-etiology examination such as the intrathecal synthesis rate for 24 hours, the test tube No. 2 is a sterile tube with the volume of 10ml, and the two test tubes are irradiated by ultraviolet lamps for at least half an hour.

Because the sample is reserved in the test tube No. 1 for non-etiology examination, the test tube No. 2 can be irradiated only without strict pollution, and the workload is reduced.

2. After the puncture point and the surrounding skin are fully disinfected and the towel is spread, the puncture point is anesthetized layer by layer, the puncture needle (the first needle core is arranged in the needle head) is slowly inserted into the needle until the sense of falling empty of the needle head is obtained, the first needle core is pulled out, and about 2-3ml of cerebrospinal fluid is reserved by a test tube with the size of 1 through a through hole at the T-shaped end of the needle head.

The bacteria planted on the surface of the skin can reduce the influence of the planted bacteria carried in during the needle puncture by flowing out part of cerebrospinal fluid, so that the second needle core can be conveniently sampled.

3. The needle head is connected with the second needle core, the second needle core is arranged in the needle head, the pressure of the puncture position is recorded, the end part of the hose is inserted into the rubber tube orifice of the No. 2 test tube, the No. 2 test tube is connected, the air valve is opened, cerebrospinal fluid flows into the No. 2 test tube through the second fine needle and the hose, the No. 2 test tube is pulled out after about 5ml is reserved, and the air valve is closed.

4. The second needle core is connected with a test tube No. 2, a specimen is reserved, cerebrospinal fluid is subjected to routine biochemical treatment and the like, the pressure at the puncture position is recorded again after the reserving is completed, the needle is pulled out, the treatment towel is sterilized, and the patient is instructed to lie horizontally for 6 hours.

The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements may be made to the present application by those skilled in the art, which modifications and equivalents are also considered to be within the scope of the present application.

Claims

1. A lumbar puncture needle, comprising: a needle head (1), a first needle core (2) and a second needle core (3),

one end of the needle head (1) is a puncture end, the other end of the needle head is an integrally formed T-shaped end (11), and a through hole (12) communicated with the two ends is formed in the needle head (1);

the first needle core (2) is a first thin needle (22) provided with a handheld end (21), the first thin needle (22) can penetrate through a through hole (12) of the needle head (1), and the radial diameter of the handheld end (21) is larger than the radial diameter of the through hole (12) along the radial direction of the needle head (1);

the second needle core (3) is a second thin needle (32) provided with a clamping end (31), a needle core through hole (33) penetrating through the clamping end and the second thin needle (32) is formed in the second needle core (3), the second thin needle (32) is located at one side of the clamping end (31), and a hose (34) is arranged at the other side of the clamping end (31) and communicated with the needle core through hole (33) of the second thin needle (32);

the second fine needle (32) can penetrate through the through hole (12) of the needle head (1), the radial diameter of the clamping end (31) is larger than that of the through hole (12) along the radial direction of the needle head (1), and the clamping end (31) is located outside the T-shaped end (11).

2. A lumbar puncture needle according to claim 1, characterized in that,

one end of the hose (34) is communicated with the needle core through hole (33) of the second fine needle (32), and the other end of the hose is a metal tip part so as to be capable of penetrating through a rubber pipe orifice.

3. A lumbar puncture needle according to claim 1, characterized in that,

the hose (34) is provided with a pressure sensor (6) for detecting intracranial pressure in the prone position.

4. A lumbar puncture needle according to claim 1, characterized in that,

the puncture end of the needle head (1) is a round head with a smooth outer surface, and a needle hole (14) communicated with the through hole (12) is arranged on the puncture end;

the tips of the first needle core (2) and the second needle core (3) are conical, and penetrate through the round head puncture end of the needle head (1).

5. A lumbar puncture needle according to claim 1, characterized in that,

an integrally formed needle protrusion (13) is arranged on the needle (1) at a position close to the T-shaped end.