CN215821106U

CN215821106U - Lumbar puncture needle applied to baby

Info

Publication number: CN215821106U
Application number: CN202122300746.2U
Authority: CN
Inventors: 谢丽娜; 陈倩; 陈金晓; 苗硕; 冯硕
Original assignee: Capital Institute of Pediatrics
Current assignee: Capital Institute of Pediatrics
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-15
Anticipated expiration: 2031-09-23

Abstract

The embodiment of the utility model discloses a lumbar puncture needle applied to infants, belonging to the technical field of medical instruments, and comprising a needle tube, a needle seat, a needle holding handle, a three-way tube, a needle core body, a needle core side hole, a needle core seat and a needle core needle head, wherein the needle seat is positioned at the tail end of the needle tube, the needle holding handle is positioned at the lower end of the tail part of the needle tube, the three-way tube is arranged at the upper end of the tail part of the needle tube, the tail end of the three-way tube is a blind end, the needle core body is inserted into the needle tube, the tail part of the needle core body is provided with the needle core side hole, the tail end of the needle core body is provided with the needle core seat, and the front end of the needle core body is provided with the needle core needle head. This application utilizes nook closing member side opening and three-way pipe, need not extract the nook closing member body and can follow the intraductal cerebrospinal fluid outflow of seeing out of transparent three-way, avoids drawing the nook closing member body repeatedly, reduces the damage to the infant. Meanwhile, the rear part of the needle core body is a blind end to control the flow rate of cerebrospinal fluid; this application still shortens the distance of needle tubing front end to needle file to 3cm, avoids longer lumbar vertebrae puncture to cause the injury to the infant.

Description

Lumbar puncture needle applied to baby

Technical Field

The embodiment of the utility model relates to the technical field of medical instruments, in particular to a lumbar puncture needle applied to infants.

Background

Lumbar puncture is a commonly used clinical operation. Can be used for diagnosing various inflammatory diseases of central nervous system, vascular diseases, spinal cord diseases, intracranial space occupying diseases, nervous system diseases with unknown diagnosis, pneumoencephalography, spinal canal angiography, etc.; it is also used for treating central nervous system diseases by discharging (reducing) and infusing medicine due to high cerebrospinal fluid pressure. The operation method is that the patient bends on the bed for lateral lying, and holds the knees with both hands, so that the lumbar vertebrae is convex backwards, and the lumbar vertebrae gap is widened. And (5) performing local conventional disinfection, and puncturing after infiltration anesthesia. Resistance exists when the needle is generally inserted into the needle for 4-5 cm, the resistance is suddenly reduced, then the needle core is pulled out, and cerebrospinal fluid can drip out when the needle tail is rotated. The cerebrospinal fluid is discharged and taken according to different purposes and specific conditions. Then the needle core is inserted, the puncture needle is pulled out, the puncture needle is fixed by a sterilized gauze piece, and the pillow is removed and the patient lies for 4 to 6 hours.

The lumbar puncture needle is a necessity for lumbar puncture, the lumbar puncture needles clinically applied at present are No. 7, 9 and 12, the length of the needle tube is 8-9cm, and the needle tube is longer for a baby with the weight less than 10kg, and the puncture injury is larger, so for the lumbar puncture of the baby, the lumbar puncture is generally completed by using an improved blood taking needle head clinically. However, blood sampling needle without needle core can not control the cerebrospinal fluid flow rate if the skull high pressure of the infant patient is obvious. And the blood taking needle head has no connected needle seat, so that the intrathecal injection requirement cannot be met.

Therefore, the technical problem to be solved by those skilled in the art is how to provide a novel lumbar puncture needle to meet the needs of lumbar puncture and intrathecal injection for small infants.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a lumbar puncture needle applied to infants, which aims to solve the problem that the flow rate of cerebrospinal fluid cannot be controlled due to the fact that a needle core is not arranged in a blood taking needle head in the prior art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the utility model provides a be applied to baby's lumbar puncture needle, includes needle tubing, needle file, holds needle handle, three-way pipe, nook closing member body, nook closing member side opening, nook closing member seat and nook closing member syringe needle, the needle file is located the tail end of needle tubing, it is located to hold the needle handle the lower extreme of needle tubing afterbody, the three-way pipe is seted up in the upper end of needle tubing afterbody, just the tail end of three-way pipe is the cecum, nook closing member body is inserted and is located in the needle tubing, the nook closing member side opening has been seted up to nook closing member body afterbody, the tail end of nook closing member body is equipped with the nook closing member seat, nook closing member body front end is equipped with the nook closing member syringe needle.

Further, when the needle head of the needle core is superposed with the front end of the needle tube, the side hole of the needle core is positioned below the three-way tube.

Further, the distance from the front end of the needle tube to the needle seat is 3-4 cm.

Furthermore, the front end of the stylet body is hollow between the side hole of the stylet, and the side hole of the stylet is solid between the side hole of the stylet and the stylet holder.

Furthermore, the needle tube is hollow, and the needle core body is inserted into the needle tube.

Furthermore, the three-way pipe is made of transparent materials.

Furthermore, a needle head side hole is formed in the side wall of the needle core needle head.

Further, the outer diameter of the needle core needle is slightly smaller than the inner diameter of the needle tube.

The embodiment of the utility model has the following advantages:

this application utilizes nook closing member side opening and three-way pipe, and the needle tubing aligns with nook closing member body front end, when puncturing to infant's lumbar vertebrae portion, aims at the three-way pipe of needle tubing afterbody upper end with nook closing member side opening, makes nook closing member side opening and three-way pipe switch on. And the front end of the stylet body is hollow, when the stylet body breaks through the dura mater, cerebrospinal fluid flows in from the front end of the stylet body, and flows out from the side hole of the stylet, so that the cerebrospinal fluid can flow out from the transparent three-way tube without pulling out the stylet body, and the phenomenon that whether the cerebrospinal fluid flows out or not is avoided when the stylet body is repeatedly extracted, and the damage to a child patient is reduced. Meanwhile, the rear part of the needle core body is a blind end, and the flow rate requirement of cerebrospinal fluid can be controlled; the distance from the front end of the needle tube to the needle seat is shortened to 3cm, and the injury to the infant caused by the puncture of the long lumbar puncture needle is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a top view of the body of the hub;

in the figure:

100 needle tubes; 200 needle seats; 300 holding the needle handle; 400 three-way pipes; 500 a stylet body; 600 stylet side holes; 700 a needle core seat; 800 stylet needles; 900 needle side hole.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. 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.

In order to solve the related technical problems existing in the prior art, the embodiment of the application provides a lumbar puncture needle applied to a baby, aims to solve the problems that the flow rate of cerebrospinal fluid cannot be controlled at present, and achieves the effect of meeting the needs of lumbar puncture and intrathecal injection of a small baby. As shown in fig. 1-2, the three-way tube specifically comprises a needle tube 100, a needle base 200, a needle holding handle 300, a three-way tube 400, a needle core body 500, a needle core side hole 600, a needle core seat 700 and a needle core needle 800, wherein the needle base 200 is positioned at the tail end of the needle tube 100, the needle holding handle 300 is positioned at the lower end of the tail part of the needle tube 100, the three-way tube 400 is arranged at the upper end of the tail part of the needle tube 100, the tail end of the three-way tube 400 is a blind end, the needle tube 100 is hollow, the needle core body 500 is inserted into the needle tube 100, the needle core side hole 600 is arranged at the tail part of the needle core body 500, and the needle core seat 700 is arranged at the tail end of the needle core body 500.

The existing lumbar puncture needle comprises a needle tube 100, a needle seat 200, a needle core body 500 and a needle core seat 700, and when in use, the lumbar puncture needle is punctured into the lumbar of a child patient. Generally, when the needle core is penetrated by 4-5 cm, resistance is generated, the resistance is suddenly reduced, the needle core body 500 is pulled out, and cerebrospinal fluid can be dripped out by rotating the needle core seat 700. When extracting cerebrospinal fluid, whether the lumbar puncture needle is successfully punctured is mostly judged according to the magnitude of the sensory resistance, but the magnitude of the sensory resistance is likely to have deviation. When medical personnel have deviation, no cerebrospinal fluid exists in the extracted needle core body 500, and the lumbar of the child patient needs to be punctured again. The puncture process is painful, and the pain of the infant patient can be increased by puncturing for many times. And medical care personnel need to put and take cerebrospinal fluid according to different purposes and specific conditions, and need to puncture for many times. The structure of the utility model does not need to puncture the infant for many times, thus reducing the pain of the infant caused by puncture.

The utility model reserves the structure of the existing lumbar puncture needle, the stylet body 500 is transformed into the structure with the stylet side hole 600, the space between the front end of the stylet body 500 and the stylet side hole 600 is hollow, and the space between the stylet side hole 600 and the stylet holder 700 is solid. The upper end of the tail part of the needle tube 100 is provided with a three-way tube 400, the three-way tube 400 is communicated with the inside of the needle tube 100, and the tail end of the three-way tube 400 is closed.

The front end of the needle core body 500 is provided with a needle core needle head 800, when the lumbar puncture needle punctures, the needle core needle head 800 and the needle tube 100 simultaneously penetrate into the body of the patient. A needle side hole 900 is formed in the sidewall of the stylet needle 800, and cerebrospinal fluid flows into the stylet body 500 through the needle side hole 900. When the lumbar puncture is used for puncturing the lumbar of a patient, the stylet needle 800 coincides with the front end of the needle tube 100, at the moment, the stylet side hole 600 is positioned below the three-way tube 400, and cerebrospinal fluid flows into the three-way tube 400 through the stylet side hole 600. And the outer diameter of the needle core 800 is slightly smaller than the inner diameter of the needle tube 100, so that the cerebrospinal fluid in the body of the patient is prevented from flowing out of the needle tube 100 when the needle core body 500 extracts the cerebrospinal fluid.

When the needle tube 100 and the stylet needle 800 pierce ligament and dura mater, cerebrospinal fluid flows into the inside of the stylet body 500 from the needle side hole 900 of the stylet needle 800, and when the cerebrospinal fluid reaches the stylet side hole 600, flows out of the stylet side hole 600 into the three-way tube 400. The three-way pipe 400 is made of transparent materials, so that whether puncture is successful or not and whether cerebrospinal fluid flows out or not can be observed from the transparent three-way pipe 400 without drawing back the needle core body 500, and pain caused by repeated puncture is avoided. The solid part between the needle core side hole 600 and the needle core seat 700 can properly slow down the flow rate of cerebrospinal fluid, thereby controlling the flow rate requirement of the cerebrospinal fluid. The lower end of the tail part of the needle tube 100 is provided with the needle holding handle 300, so that medical staff can hold the needle holding handle 300 by hand to puncture the lumbar vertebra of the child patient, and the medical staff can conveniently clamp the lumbar puncture needle.

In the prior art, the lumbar puncture needle for clinical application is No. 7, No. 9 and No. 12, the length of the needle tube 100 is 8-9cm, the needle tube is longer for a small baby with the weight less than 10kg, and the puncture injury is larger.

In actual operation, the infant patient bends on the lateral bed, holds the knees with both hands, and makes the lumbar vertebrae convex backward and the lumbar vertebrae gap widened. After local conventional disinfection and infiltration anesthesia, a medical worker holds the needle handle 300 by hand and punctures the needle tube 100 and the needle core 800 into the lumbar of the infant patient. When the needle tube 100 and the hub needle 800 pass through the ligament and dura, cerebrospinal fluid flows into the hollow portion of the front end of the hub body 500 through the needle side hole 900 and flows out of the hub side hole 600 into the three-way tube 400. Medical personnel can judge whether the puncture is successful or not by directly observing whether cerebrospinal fluid exists in the three-way pipe 400, so that the pain of the infant caused by multiple punctures is avoided. When the cerebrospinal fluid flows into the needle core body 500, the needle core body 500 is slowly withdrawn from the needle tube 100, thereby collecting the cerebrospinal fluid. The position of the needle tube 100 is kept unchanged, the medicine injection needle replaces the position of the needle core body 500, and medicine is injected to the lumbar vertebra of the child patient, so that the pain of secondary puncture during medicine administration is avoided.

The utility model can realize two functions, one is to extract the cerebrospinal fluid at the lumbar vertebra of the child patient for diagnosis and treatment, and the other is to replace the needle core body 500 with a drug injection needle to complete intrathecal injection.

When extracting cerebrospinal fluid from the lumbar vertebrae of the infant patient for diagnosis. In the first step, cerebrospinal fluid is collected for examination. First, measure the brain pressure, understand the intracranial pressure height. And thirdly, performing cerebrospinal fluid dynamics examination. Fourthly, spinal cord or pneumoencephalography is carried out.

When the cerebrospinal fluid at the lumbar vertebra of the infant patient is extracted for treatment. First, draining the bloody cerebrospinal fluid. And step two, releasing cerebrospinal fluid and reducing intracranial pressure. And thirdly, injecting the medicine intrathecally to treat inflammation or tumor.

Intrathecal administration is to inject the drug directly into the subarachnoid space through lumbar puncture, so that the drug is dispersed in cerebrospinal fluid and reaches effective blood concentration quickly. If the isotope labeled albumin is injected into the sheath, most of the isotope labeled albumin can reach the subarachnoid space of the undersurface of the brain within 4-6 h. Intrathecal administration can make the medicine naturally reach every cerebral cistern of subarachnoid cavity along with the circulation of cerebrospinal fluid and disperse in the whole ventricular system. Repeated administration in short term can maintain certain effective concentration of the medicine, and is a good administration way and a method for treating intracranial infection.

The intrathecal administration is matched with the lumbar puncture for simultaneous implementation, and the medicament directly enters the subarachnoid cavity without passing through the blood brain barrier, so that the concentration of the medicament in the cerebrospinal fluid is high, the effect is good, the intrathecal administration is particularly suitable for the cases of the ventricular inflammation, and the adverse reaction caused by the large-dose intravenous administration is avoided. The subarachnoid space is washed for many times, so that viscous cerebrospinal fluid can be diluted to facilitate drainage, the concentration of bacteria in the cerebrospinal fluid is reduced, necrotic brain tissues, bacteria, toxins of the bacteria and the like can be taken away, and infection is relieved. The intrathecal injection can make the medicine quickly disperse in the subarachnoid cavity and ventricle, can kill bacteria locally, reduce arachnoid adhesion, dynamically observe the color change of cerebrospinal fluid and perform routine examination, and can perform simple intracranial pressure monitoring.

The application process of the embodiment of the utility model is as follows:

the infant is bent on the side to lie on the bed, and the two hands hold the knees to make the lumbar spine convex backward and widen the lumbar space. After local conventional disinfection and infiltration anesthesia, a medical worker holds the needle handle 300 by hand and punctures the needle tube 100 and the needle core 800 into the lumbar of the infant patient. When the needle tube 100 and the hub needle 800 pass through the ligament and dura, cerebrospinal fluid flows into the hollow portion of the front end of the hub body 500 through the needle side hole 900 and flows out of the hub side hole 600 into the three-way tube 400. Medical personnel can judge whether the puncture is successful or not by directly observing whether cerebrospinal fluid exists in the three-way pipe 400, so that the pain of the infant caused by multiple punctures is avoided. When the cerebrospinal fluid flows into the needle core body 500, the needle core body 500 is slowly withdrawn from the needle tube 100, thereby collecting the cerebrospinal fluid. The position of the needle tube 100 is kept unchanged, the medicine injection needle replaces the position of the needle core body 500, and medicine is injected to the lumbar vertebra of the child patient, so that the pain of secondary puncture during medicine administration is avoided.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims

1. The utility model provides a be applied to baby's lumbar puncture needle, its characterized in that, includes needle tubing, needle file, holds the needle handle, three-way pipe, nook closing member body, nook closing member side opening, nook closing member seat and nook closing member syringe needle, the needle file is located the tail end of needle tubing, it is located to hold the needle handle the lower extreme of needle tubing afterbody, the three-way pipe is seted up in the upper end of needle tubing afterbody, just the tail end of three-way pipe is the cecum, the nook closing member body insert locate in the needle tubing, the nook closing member side opening has been seted up to nook closing member body afterbody, the tail end of nook closing member body is equipped with the nook closing member seat, nook closing member body front end is equipped with the nook closing member syringe needle.

2. A lumbar puncture needle for infants according to claim 1, wherein said side hole of the hub is located below the tee when the hub needle coincides with the forward end of the tube.

3. A lumbar puncture needle for infants according to claim 2, wherein the distance from the front end of the needle tube to the needle holder is 3-4 cm.

4. A lumbar puncture needle for infants according to claim 3, wherein said plunger body is hollow from the front end thereof to the plunger side hole, and solid from the plunger side hole to the plunger seat.

5. The lumbar puncture needle for infants according to claim 4, wherein the needle tube is hollow inside, and the needle core body is inserted inside the needle tube.

6. The lumbar puncture needle for infants according to claim 5, wherein the three-way tube is made of transparent material.

7. The lumbar puncture needle for infants according to claim 6, wherein the side wall of the needle core needle is provided with a needle side hole.

8. A lumbar puncture needle for infants according to claim 7, wherein the outside diameter of said core needle is slightly smaller than the inside diameter of said needle cannula.