CN215306528U - Lumbar cisterna puncture needle - Google Patents

Abstract

The utility model belongs to the technical field of medical appliances, and particularly discloses a lumbar cisterna puncture needle. The lumbar cisterna magna puncture needle comprises a first sleeve, a second sleeve, a third sleeve and a needle core, wherein the first sleeve comprises a first needle tube and a first needle seat integrally connected with the rear end of the first needle tube, the second sleeve comprises a second needle tube and a second needle seat integrally connected with the rear end of the second needle tube, the third sleeve comprises a third needle tube and a third needle seat integrally connected with the rear end of the third needle tube, and the needle core comprises a core body and a core seat integrally connected with the rear end of the core body; the second needle tube is sleeved in the first sleeve, and the head end of the second needle tube exceeds the head end of the first needle tube; the third needle tube is sleeved in the second sleeve, and the head end of the third needle tube exceeds the head end of the second needle tube; the needle core is sleeved in the third sleeve. This big pond of waist puncture needle can promote the degree of accuracy of pjncture needle puncture to promote the success rate that the drainage tube was placed, effectively shorten and put the tub time, the practicality is strong.

Description

Lumbar cisterna puncture needle

[ technical field ] A method for producing a semiconductor device

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

[ background of the utility model ]

The lumbar cisterna magna continuous drainage is a method for applying lumbar puncture to place a disposable special drainage tube into a spinal cord subarachnoid space to achieve the purpose of draining cerebrospinal fluid, is mainly suitable for intracranial infection, subarachnoid space hemorrhage, cerebral hemorrhage breaking into ventricles, ventricular hemorrhage, intracranial high pressure and other diseases, has the advantages of small wound, controllable drainage speed, sufficient drainage, pain avoidance of repeated lumbar puncture and the like, and is widely applied to neurology and surgery.

At present, when the lumbar cisterna magna puncture is clinically carried out, the operation method comprises the following steps: after the puncture is successfully carried out by using a common lumbar puncture needle, the intracranial pressure is measured, the depth and the angle of the lumbar puncture needle which is arranged in the subarachnoid space of the spinal cord are measured, then the lumbar puncture needle is pulled out, a puncture needle (in a blunt steel needle) is arranged in the subarachnoid space of the spinal cord along the entering angle and the depth of the lumbar puncture needle, then a needle core is pulled out, a drainage tube is arranged in the lumbar cisterna, and finally the puncture needle is withdrawn. That is, the existing puncture needle only comprises a blunt-end thick steel needle and a needle core sleeved in the steel needle, and when in use, a lumbar puncture needle is needed to puncture, and then the puncture needle is inserted into the subarachnoid space of spinal cord of a patient along a punctured route. The operating method presents the following difficulties:

1. the tip of the needle always hits the bone and may be related to the following factors: the lumbar vertebra gap is narrow, the lumbar puncture needle is thin, and the puncture needle is thick; the puncture angle of the puncture needle is different from the entering angle of the lumbar puncture needle, the lumbar puncture needle is thin and sharp, the puncture angle is easy to master, the puncture needle is thick and blunt at the head end, and the puncture angle is difficult to master and easy to deviate;

2. although the puncture needle is inserted according to the puncture angle and the puncture depth of the lumbar puncture needle, the cerebrospinal fluid flows out smoothly, and the reason may be that: the puncture needle is not positioned in the middle of the subarachnoid space of the spinal cord and deviates from the wall, and the like, so that the puncture needle is not accurately placed in a word;

3. the puncture needle is put into with the puncture deep according to the puncture angle of waist puncture needle, and cerebrospinal fluid also flows unobstructed, but places the drainage tube difficulty, and the reason probably is: the head end of the puncture needle adheres to the wall, so that the drainage tube cannot be smoothly placed, the drainage tube is normally properly adjusted under the condition, but the puncture is needed to be performed again sometimes, the operation is troublesome, and the pain of a patient is increased.

Because of the above difficulties, clinicians have a smooth sentence: the puncture of the waist for 5 minutes and the catheterization for 2 hours indicates that the puncture catheterization is not easy. Moreover, if the puncture needle passes in and out of the same lumbar vertebra gap for multiple times, the local part of the lumbar vertebra can become a hornet nest tissue, so that the puncture needle can be punctured again after the local tissue is recovered, the confidence of a doctor is seriously attacked, the burden of a patient is increased (the disposable suit for puncture is up to thousands of yuan), and the illness state of some patients cannot be waited, so that the waste of manpower, material resources and financial resources can be said. Based on the above situation, the operation usually needs a neurology senior physician with abundant clinical experience to operate, and the general physician is daunting.

[ Utility model ] content

In order to overcome the defects of the prior art, the utility model aims to provide the lumbar cisterna magna puncture needle which is simple in structure and easy to operate, and can improve the puncture accuracy of the puncture needle, so that the success rate of placing a drainage tube is improved, the tube placing time is effectively shortened, and the practicability is high.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a lumbar cisterna puncture needle comprises a first sleeve, a second sleeve, a third sleeve and a needle core, wherein the first sleeve comprises a first needle tube and a first needle seat integrally connected with the rear end of the first needle tube, the second sleeve comprises a second needle tube and a second needle seat integrally connected with the rear end of the second needle tube, the third sleeve comprises a third needle tube and a third needle seat integrally connected with the rear end of the third needle tube, and the needle core comprises a core body and a core seat integrally connected with the rear end of the core body; the second needle tube is sleeved in the first needle tube, and when the head end of the second needle seat is inserted in the tail end of the first needle seat, the head end of the second needle tube exceeds the head end of the first needle tube; the third needle tube is sleeved in the second sleeve, and when the head end of the third needle seat is inserted in the tail end of the second needle seat, the head end of the third needle tube exceeds the head end of the second needle tube; the needle core is sleeved in the third sleeve, and the head end of the core seat can be inserted in the tail end of the third needle seat.

Further, the length of the first needle tube is 7.5-8 cm.

Furthermore, when the second needle tube is sleeved in the first needle tube and the head end of the second needle seat is inserted in the tail end of the first needle seat, the length of the second needle tube exceeding the head end of the first needle tube is 0.5-1 cm.

Furthermore, when the third needle tube is sleeved in the second sleeve and the head end of the third needle seat is inserted in the tail end of the second needle seat, the length of the third needle tube exceeding the head end of the second needle tube is 6-8 cm.

Further, the diameters of the first needle tube, the second needle tube and the third needle tube are 20mm, 16mm and 12mm respectively.

Furthermore, two opposite sides of the outer side surface of the second needle seat are connected with a needle wing.

Further, the first sleeve, the second sleeve, the third sleeve and the stylet are all made of stainless steel.

Furthermore, the head ends of the first needle tube, the second needle tube and the third needle tube are all bevel openings, and length scales are arranged on the first needle tube, the second needle tube and the third needle tube.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

the lumbar cisterna puncture needle has the advantages that the three needle tubes are sequentially sleeved, so that the diameters of the puncture needle are sequentially in a thin state, a medium state and a thick state from the front end to the rear end, the whole structure is simple, the puncture needle is used as a whole for puncture, on one hand, the puncture angles of the three needle tubes are kept consistent, the purpose of improving the puncture accuracy is achieved, on the other hand, the puncture channel is continuously widened, so that a pipeline can be conveniently placed, the drainage is smoothly performed, and the operation is convenient. In conclusion, the lumbar cisterna puncture needle can improve the puncture accuracy of the puncture needle, thereby improving the success rate of placing the drainage tube, effectively shortening the tube placing time, solving the difficulties of '5 minutes lumbar puncture and 2 hours tube placing' clinically at present, and most doctors have the ability to successfully place tubes, and the practicability is strong.

[ description of the drawings ]

FIG. 1 is a schematic view of the structure of the lumbar cisterna puncture needle of the present invention.

Fig. 2 is a schematic view of a portion of the needle withdrawal device of fig. 1.

The main reference symbols in the drawings are as follows:

in the figure, 1-first sleeve, 11-first needle tube, 12-first needle seat, 2-second sleeve, 21-second needle tube, 22-second needle seat, 221-needle wing, 3-third sleeve, 31-third needle tube, 32-third needle seat, 4-needle core, 41-core body and 42-core seat.

The following detailed description will further illustrate the utility model in conjunction with the above-described figures.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, in a preferred embodiment of the present invention, a cisterna punctatus puncture needle comprises a first cannula 1, a second cannula 2, a third cannula 3 and a stylet 4, wherein the first cannula 1, the second cannula 2, the third cannula 3 and the stylet 4 are all made of stainless steel.

The first sleeve 1 comprises a first needle tube 11 and a first needle seat 12 integrally connected with the rear end of the first needle tube 11, wherein the length of the first needle tube 11 is 7.5-8cm, and the diameter of the first needle tube 11 is 20 mm; the second sleeve 2 comprises a second needle tube 21 and a second needle seat 22 integrally connected with the rear end of the second needle tube 21, the diameter of the second needle tube 21 is 16mm, and two opposite sides of the outer side surface of the second needle seat 22 are respectively connected with a needle wing 221, so that a doctor can hold the second needle seat 22 to apply force to push a needle; the third sleeve 3 comprises a third needle tube 31 and a third needle seat 32 integrally connected with the rear end of the third needle tube 31, and the diameter of the third needle tube 32 is 12 mm; the stylet 4 includes a core 41 and a core holder 42 integrally connected to a rear end of the core 41. Meanwhile, the head ends of the first needle tube 11, the second needle tube 21 and the third needle tube 31 are bevel openings, and length scales (not shown in the figure) are arranged on the first needle tube 11, the second needle tube 21 and the third needle tube 31, so that a doctor can conveniently master the puncture depth.

The second needle tube 21 is sleeved in the first needle tube 1, and when the head end of the second needle seat 22 is stably inserted into the tail end of the first needle seat 12, the length of the second needle tube 21 exceeding the head end of the first needle tube 11 is 0.5-1cm, and the exceeding length enables the second needle tube 21 to be slightly positioned in front of the first needle tube 11 during puncture, so that a puncture channel is continuously widened; the third needle tube 31 is sleeved in the second sleeve 2, and when the head end of the third needle seat 32 is stably inserted into the tail end of the second needle seat 22, the length of the third needle tube 31 exceeding the head end of the second needle tube 21 is 6-8cm, and the exceeding length is set so that when the third needle tube 31 is punctured in place, neither the second needle tube 21 nor the first needle tube 11 starts puncturing, thereby maintaining the smoothness of puncturing; the core body 41 is sleeved in the third sleeve 3, and the head end of the core seat 42 can be inserted into the tail end of the third needle seat 32.

The application method of the lumbar cisterna puncture needle comprises the following steps:

1. after inserting the head end of the third needle tube 31 into the subcutaneous space of the patient, one hand holds the first mounting seat 12, the other hand holds the core seat 42 and applies force to push the third needle tube 31 together with the core 41 forward into the patient for puncture;

2. when the third needle tube 31 and the needle core 41 enter the subcutaneous depth of 4-6cm of the patient, the pushing is stopped, the specific puncture depth is analyzed and adjusted according to the specific patient during operation, generally 4-6cm can enter the drainage position, then the needle core 42 is completely withdrawn, and at the moment, drainage liquid begins to flow out from the tail end of the third needle seat 32;

3. keeping the third cannula 3 still, applying force to push the first cannula 11 and the second cannula 21 into the patient for puncture, and stopping pushing when the insertion depth of the first cannula 11 is the same as the insertion depth of the third cannula 21;

4. keeping the first casing 1 still and completely withdrawing the second casing 2 and the third casing 3;

5. the drainage tube is passed from the end of the first needle hub 12 along the first needle cannula 11 into the patient and then out of the first cannula 1.

In conclusion, the lumbar cisterna puncture needle is simple in structure and easy to operate, and can improve the puncture accuracy of the puncture needle, so that the success rate of placing a drainage tube is improved, the tube placing time is effectively shortened, and the practicability is high.

Claims (8)

1. The utility model provides a big pool puncture needle of waist which characterized in that: the needle core comprises a core body and a core seat integrally connected with the rear end of the core body; the second needle tube is sleeved in the first needle tube, and when the head end of the second needle seat is inserted in the tail end of the first needle seat, the head end of the second needle tube exceeds the head end of the first needle tube; the third needle tube is sleeved in the second sleeve, and when the head end of the third needle seat is inserted in the tail end of the second needle seat, the head end of the third needle tube exceeds the head end of the second needle tube; the needle core is sleeved in the third sleeve, and the head end of the core seat can be inserted in the tail end of the third needle seat.

2. The cisterna magna puncture needle as claimed in claim 1, wherein: the length of the first needle tube is 7.5-8 cm.

3. The lumbar cisterna puncture needle as claimed in claim 2, wherein: when the second needle tube is sleeved in the first needle tube and the head end of the second needle seat is inserted in the tail end of the first needle seat, the length of the second needle tube exceeding the head end of the first needle tube is 0.5-1 cm.

4. The lumbar cisterna puncture needle as claimed in claim 2, wherein: when the third needle tube is sleeved in the second sleeve and the head end of the third needle seat is inserted in the tail end of the second needle seat, the length of the third needle tube exceeding the head end of the second needle tube is 6-8 cm.

5. The cisterna magna puncture needle as claimed in claim 1, wherein: the diameters of the first needle tube, the second needle tube and the third needle tube are 20mm, 16mm and 12mm respectively.

6. The cisterna magna puncture needle as claimed in claim 1, wherein: and two opposite sides of the outer side surface of the second needle seat are respectively connected with a needle wing.

7. The cisterna magna puncture needle as claimed in claim 1, wherein: the first cannula, the second cannula, the third cannula and the stylet are all made of stainless steel.

8. The lumbar cisterna puncture needle as claimed in claim 1, wherein: the head ends of the first needle tube, the second needle tube and the third needle tube are all bevel mouths, and length scales are arranged on the first needle tube, the second needle tube and the third needle tube.

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