Integrated bedside cerebrospinal fluid puncture and primary screening device

Abstract

An integrated bedside cerebrospinal fluid puncture and screening device includes a base with a lifting column mounted on it. The lifting column is a liftable structure, with a cantilever tube installed at the upper end of the lifting column. A guide sleeve is installed at the front of the cantilever tube, and a puncture needle is inserted inside the guide sleeve. In summary, this invention allows for bedside lumbar puncture, facilitating the collection of cerebrospinal fluid. Furthermore, it enables bedside testing of cerebrospinal fluid pressure, temperature, transparency, and blood glucose concentration, providing rapid indicators to facilitate early diagnosis and treatment of the patient.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an integrated bedside cerebrospinal fluid puncture and initial screening device. Background Technology

[0002] Cerebrospinal fluid (CSF) is a colorless, transparent fluid found in the ventricles and subarachnoid space of the brain, primarily produced by the choroid plexus of the lateral ventricles, third ventricle, and fourth ventricle. CSF has a specific gravity of 1.005, a total volume of approximately 130-150 ml, and a daily production of around 500 ml. It surrounds and supports the entire brain and spinal cord, effectively reducing intracranial pressure to about one-sixth and providing some protection against external injuries. Through its flow, CSF removes metabolic waste products, such as β-amyloid protein, maintaining the cleanliness of the central nervous system. It also buffers pressure in the brain and spinal cord, maintaining stable intracranial pressure and providing protection and support to the brain and spinal cord. CSF provides nutrients to brain cells, removes metabolic waste products from brain tissue, and regulates the acid-base balance of the central nervous system.

[0003] Cerebrospinal fluid (CSF) plays a crucial role in medical diagnosis. Medical personnel often use lumbar puncture to extract CSF for testing to assist in the diagnosis of brain tissue damage or lesions. Abnormalities in CSF may be associated with various diseases; for example, increased CSF may lead to hydrocephalus, while decreased CSF may cause symptoms of low intracranial pressure and headaches. During intracranial infection, a series of significant changes occur in CSF, which are important diagnostic criteria. CSF undergoes corresponding changes during intracranial infection, and the diagnosis of intracranial infection and the causative pathogen is mainly based on CSF testing. The main changes in CSF during intracranial infection include: 1. Color changes: CSF may exhibit different colors due to infection. For example, infections with meningococci and pneumococci may cause CSF to turn white; while infections with Pseudomonas aeruginosa and Diplococcus pneumoniae may turn it green. 2. Increased pressure: During intracranial infection, the pressure of CSF usually increases, which may be related to the increased intracranial pressure caused by the infection. 3. Increased protein levels: Under normal circumstances, qualitative protein in cerebrospinal fluid is negative or weakly positive, with a quantitative range of 0-0.4 g / L. However, in intracranial infections, increased permeability of the meninges and choroid plexus capillaries due to infection and inflammation leads to increased protein exudation, thus the qualitative protein test result becomes positive, and the quantitative level also increases accordingly. 4. Decreased glucose levels: Infection causes bacteria and damaged cells to release glucose-degrading enzymes. These enzymes enhance anaerobic glycolysis, resulting in a decrease in glucose levels in the cerebrospinal fluid. 5. Increased lactate dehydrogenase (LDH) and aminotransferase levels: Elevated LDH levels help differentiate between bacterial and viral infections, while elevated aminotransferase levels are related to bacterial infection disrupting the blood-brain barrier and increasing its permeability. 6. Increased white blood cell count: White blood cell counts typically increase during intracranial infections. Increased neutrophils are common in bacterial infections, while increased lymphocytes are more common in tuberculosis or viral infections. 7. Decreased chloride levels: In cases of intracranial infection, chloride levels may also decrease, which is usually accompanied by a decrease in glucose levels.

[0004] Lumbar puncture is a medical procedure used to diagnose central nervous system diseases by extracting cerebrospinal fluid. The puncture is usually performed at the L3-L4 or L4-L5 intervertebral space. The patient needs to lie on their side and curl up to facilitate the procedure. After local anesthesia, the doctor inserts a thin needle through the skin and tissue into the subarachnoid space to extract a certain amount of cerebrospinal fluid, usually about 5-15 ml. The cerebrospinal fluid is sent to a laboratory for analysis after extraction. However, the process from collection to delivery, testing, and report generation typically takes 12 hours or longer. In cases of intracranial infection leading to complications such as increased intracranial pressure, patients are at risk of brain herniation and death. Therefore, inventing a device that can detect certain indicators at the bedside can facilitate rapid assessment of the patient's condition, enabling early treatment and reducing the risk of death and other complications. Utility Model Content

[0005] The present invention aims to provide an integrated bedside cerebrospinal fluid puncture and screening device to solve the technical problems of existing methods of lumbar puncture by extracting cerebrospinal fluid being time-consuming and prone to causing intracranial infection.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An integrated bedside cerebrospinal fluid puncture and screening device includes a base, a lifting column installed on the base, the lifting column is a liftable structure, a cantilever tube is installed at the upper end of the lifting column, a guide sleeve is installed at the front of the cantilever tube, a puncture needle is inserted inside the guide sleeve, the puncture needle can slide back and forth on the guide sleeve, the puncture needle is a hollow structure, and a needle core is inserted inside the puncture needle.

[0008] A guide tube is inserted inside the cantilever tube. A comparison plate is installed at the rear of the cantilever tube. The comparison plate is provided with a collection chamber and a pure water chamber. The pure water chamber is filled with water. The rear end of the guide tube is connected to the collection chamber. The front end of the guide tube extends out of the cantilever tube. A leather sleeve is connected to the front end of the guide tube. The leather sleeve is used to connect the front end of the guide tube to the rear end of the puncture needle.

[0009] The guide tube is also equipped with a first three-way valve and a second three-way valve. Connecting pipes are installed at the outlets of the first three-way valve and the second three-way valve. The connecting pipe of the first three-way valve is connected to a test tube, and the connecting pipe of the second three-way valve is connected to a blood glucose test strip, which is connected to the blood glucose monitor.

[0010] Furthermore, the outer wall of the puncture needle is provided with depth markings.

[0011] Furthermore, a laser light is installed at the front end of the cantilever tube.

[0012] Furthermore, a pressure sensor and a temperature sensor are provided at the front of the guide tube, and a display screen is provided at the rear of the cantilever tube. The display screen is used to display the pressure and temperature monitored by the pressure sensor and the temperature sensor.

[0013] Furthermore, light strips are installed on the comparison board.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: By integrating multiple functions, this invention achieves the goal of efficiently and accurately performing lumbar puncture to extract cerebrospinal fluid (CSF) and conduct preliminary screening at the bedside. First, the use of a laser lamp for positioning improves the accuracy and safety of the puncture. Second, the connection between the puncture needle and the collection system via a drainage tube allows the CSF to be smoothly guided to different detection pathways, facilitating both laboratory sample collection and immediate testing, such as blood glucose concentration measurement. Furthermore, pressure and temperature sensors on the drainage tube monitor the pressure and temperature of the CSF in real time and display them intuitively on a screen, aiding in rapid assessment of the patient's condition. The light strips on the comparison plate are used to observe the transparency of the CSF, further providing diagnostic evidence.

[0015] Overall, this device simplifies the operating procedure, shortens the diagnostic time, and enables medical staff to quickly obtain key indicators at the bedside, which is of great significance for timely adjustment of treatment plans and improvement of treatment outcomes. At the same time, its design takes into account ease of use and accuracy, providing great convenience for clinical application. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the integrated bedside cerebrospinal fluid puncture and primary screening device of this utility model;

[0018] Figure 2 This is a schematic diagram showing the positions of the first three-way valve, the second three-way valve, and the comparison plate on the guide pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The present invention will be further described in detail below with reference to the embodiments.

[0021] like Figure 1-2 As shown, a specific embodiment of the integrated bedside cerebrospinal fluid puncture and initial screening device provided by this utility model is as follows:

[0022] An integrated bedside cerebrospinal fluid puncture and screening device includes a base 1, a lifting column 2 mounted on the base 1, the lifting column 2 being a liftable structure, a cantilever tube 3 mounted on the upper end of the lifting column 2, a guide sleeve 4 mounted on the front of the cantilever tube 3, a puncture needle 5 inserted inside the guide sleeve 4, the puncture needle 5 being able to slide back and forth on the guide sleeve 4, the puncture needle 5 being a hollow structure, a needle core 6 inserted inside the puncture needle 5; depth scale lines are provided on the outer wall of the puncture needle 5; a laser lamp 7 is mounted on the front end of the cantilever tube 3;

[0023] A guide tube 8 is inserted inside the cantilever tube 3. A comparison plate 9 is installed at the rear of the cantilever tube 3. A light strip 10 is provided on the comparison plate 9. A collection chamber 11 and a pure water chamber 12 are provided on the comparison plate 9. The pure water chamber 12 is filled with water. The rear end of the guide tube 8 is connected to the collection chamber 11. The front end of the guide tube 8 extends out of the cantilever tube 3. A leather sleeve 13 is connected to the front end of the guide tube 8. The leather sleeve 13 is used to connect the front end of the guide tube 8 to the rear end of the puncture needle 5.

[0024] A first three-way valve 14 and a second three-way valve 15 are also provided on the guide tube 8. A connecting pipe 16 is installed at the outlet of the first three-way valve 14 and the second three-way valve 15. The connecting pipe 16 of the first three-way valve 14 is connected to a test tube 17, and the connecting pipe 16 of the second three-way valve 15 is connected to a blood glucose test strip 18, which is connected to the blood glucose monitor 19.

[0025] When using the integrated bedside cerebrospinal fluid puncture and screening device of this embodiment to perform lumbar puncture and extract cerebrospinal fluid, the patient is first positioned according to the routine lumbar puncture procedure. After the nurse performs disinfection and anesthesia according to the normal procedure, the needle core 6 is inserted into the puncture needle 5, the laser light 7 is turned on, and the laser light 7 emits a cross beam. The height of the lifting column 2 is adjusted so that the laser beam is pointed at the point to be punctured, which is convenient for marking and measurement. Then, the puncture needle 5 is pushed forward, and the puncture needle 5 enters the spinal canal through the intervertebral space. When a breakthrough sensation is felt, it means that the ligamentum flavum has been punctured and the spinal canal has been entered. At this time, the needle core 6 is pulled out and cerebrospinal fluid is seen to flow out, and the needle insertion is stopped. Then, the drainage tube 8 is quickly connected to the tail end of the puncture needle 5 through the sheath 13, and the cerebrospinal fluid flows into the drainage tube 8.

[0026] Next, operate the first three-way valve 14 to open the connecting tube 16, allowing cerebrospinal fluid to flow along the guide tube 8 into the test tube 17. Once a certain amount of cerebrospinal fluid has been collected in the test tube 17, close the first three-way valve 14, remove the test tube 17, and send it to the laboratory for testing. Then, open the second three-way valve 15, allowing the cerebrospinal fluid to flow onto the blood glucose test strip 18 via the guide tube 8, the second three-way valve 15, and the connecting tube 16. The blood glucose test strip 18 is connected to the blood glucose monitor 19, through which the blood glucose content in the cerebrospinal fluid can be read. Finally, close the second three-way valve 15, allowing the cerebrospinal fluid to flow into the collection chamber 11 via the guide tube 8. Turn on the light strip 10 on the comparison plate 9 and compare the cerebrospinal fluid in the collection chamber 11 with the water in the pure water chamber 12 to observe the degree of turbidity of the cerebrospinal fluid.

[0027] Preferably, a pressure sensor 20 and a temperature sensor 21 can also be provided at the front of the diversion tube 8. The pressure sensor 20 and the temperature sensor 21 are used to monitor the pressure and temperature of the cerebrospinal fluid in the diversion tube 8, respectively. A display screen 22 is provided at the rear end of the cantilever tube 3. The display screen 22 is used to display the pressure and temperature monitored by the pressure sensor 20 and the temperature sensor 21.

[0028] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated bedside cerebrospinal fluid puncture and screening device, characterized by: The base is provided with a lifting column, the upper end of the lifting column is provided with a cantilever pipe, the front of the cantilever pipe is provided with a guide sleeve, a puncture needle is arranged in the guide sleeve and can slide forward and backward on the guide sleeve, the puncture needle is a hollow structure, and a needle core is arranged in the puncture needle; A flow guide pipe is arranged in the cantilever pipe, the rear of the cantilever pipe is provided with a comparison plate, the comparison plate is provided with a collection cavity and a pure water cavity, water is contained in the pure water cavity, the rear end of the flow guide pipe is connected to the collection cavity, the front end of the flow guide pipe is arranged outside the cantilever pipe, a sheath is connected to the front end of the flow guide pipe, and the sheath is used for connecting the front end of the flow guide pipe to the rear end of the puncture needle. A first three-way valve and a second three-way valve are arranged on the flow guide pipe, a connecting pipe is arranged at the outlet of the first three-way valve and the second three-way valve, a test tube is connected to the connecting pipe of the first three-way valve, and a blood glucose test paper is connected to the connecting pipe of the second three-way valve.

2. The integrated bedside cerebrospinal fluid tap and initial screening device of claim 1, wherein: Depth scale lines are arranged on the outer wall of the puncture needle.

3. The integrated bedside cerebrospinal fluid tap and initial screening device of claim 1, wherein: A laser lamp is arranged at the front end of the cantilever pipe.

4. The integrated bedside cerebrospinal fluid tap and initial screening device of claim 1, wherein: A pressure sensor and a temperature sensor are arranged on the front of the flow guide pipe, and a display screen is arranged at the rear end of the cantilever pipe, the display screen is used for displaying the pressure and temperature monitored by the pressure sensor and the temperature sensor.

5. The integrated bedside cerebrospinal fluid tap and initial screening device of claim 1, wherein: A light bar is arranged on the comparison plate.

Images