Lumbar puncture drainage device and method for continuously measuring cerebrospinal fluid pressure

Abstract

The invention relates to the technical field of medical measurement, in particular to a lumbar puncture drainage device and method for continuously measuring cerebrospinal fluid pressure, and the lumbar puncture drainage device for continuously measuring cerebrospinal fluid comprises a puncture needle, a drainage cerebrospinal fluid container, an electronic pressure sensor, a drainage catheter, a shifting piece, an electronic element packaging tube and a signal transmission coil; the puncture needle and the cerebrospinal fluid drainage container are connected through the puncture needle and cerebrospinal fluid drainage container connector; the puncture needle and the cerebrospinal fluid drainage container joint are detachable; the cerebrospinal fluid drainage container is provided with a cerebrospinal fluid drainage channel, and the drainage catheter is connected with the cerebrospinal fluid drainage channel; the shifting piece is horizontally arranged in the cerebrospinal fluid drainage channel; the cerebrospinal fluid drainage channel is provided with a circular groove; the orifice of the drainage catheter is embedded in the circular groove; and the circular groove is tightly connected with the drainage catheter. The safety, reliability and maintenance convenience of the cerebrospinal fluid drainage device are improved.

Description

Technical Field

[0001] This invention relates to the field of medical measurement technology, and in particular to a lumbar puncture drainage device and method for continuously measuring cerebrospinal fluid pressure. Background Technology

[0002] In neurosurgery (including traumatic brain injury), neurology (including hemorrhagic stroke, central nervous system infections such as tuberculosis, bacterial and viral infections), and critical care medicine, lumbar puncture and drainage (LD) is a crucial clinical procedure. It involves inserting a catheter through a lumbar puncture to drain cerebrospinal fluid (CSF). This technique is widely used in various clinical settings, including diagnosis, treatment, intraoperative support, neurosurgery, intracranial pressure monitoring, and CSF drainage. Lumbar puncture and drainage not only helps physicians monitor changes in a patient's condition in real time but also provides vital support during neurosurgery, ensuring patient safety throughout the procedure. Especially in CSF drainage and intracranial pressure regulation, lumbar puncture and drainage plays an irreplaceable role in clinical practice, demonstrating significant social benefits and a broad market prospect.

[0003] In addition, lumbar puncture is often used to measure cerebrospinal fluid (CSF) pressure, collect CSF samples, or reduce intracranial pressure and alleviate patient symptoms by draining CSF. Real-time monitoring and regulation of CSF pressure are crucial in the diagnosis and treatment of acute traumatic brain injury, cerebral hemorrhage, brain tumors, and intracranial infections, helping to prevent further brain damage caused by excessively high intracranial pressure. Therefore, the application value of lumbar puncture in the medical field cannot be ignored; it provides reliable technical support for clinical treatment and patient rehabilitation.

[0004] However, traditional lumbar puncture drainage techniques still have certain limitations in clinical practice. Traditional manometry can usually only be performed before cerebrospinal fluid (CSF) drainage or intermittently during drainage, failing to provide dynamic real-time monitoring of CSF pressure. This means that doctors cannot assess changes in CSF pressure in real time based on the drainage rate and volume, thereby assessing intracranial pressure changes and deciding whether to continue or terminate CSF drainage, increasing the risk of over-drainage or under-drainage. Furthermore, repeated changes to the manometry tube can easily lead to contamination, increasing the risk of intracranial infection. Over-drainage may result in a significant reduction in CSF volume, leading to hypotension syndrome, causing symptoms such as severe headaches, and in severe cases, affecting brain function. Under-drainage, on the other hand, may fail to effectively reduce intracranial pressure, affecting treatment outcomes. Contamination during repeated CSF pressure measurements leading to intracranial infection not only increases the risk of worsening the condition but also increases the patient's financial burden and may even pose a fatal threat.

[0005] Furthermore, traditional devices typically require frequent manual adjustments and operations, which not only increases the workload of medical staff but may also affect the accuracy, timeliness, and safety of the procedure. Therefore, to address these issues, improve the precision of drainage procedures, and reduce potential risks associated with manual operation, modern medicine urgently needs a device capable of real-time pressure data acquisition, precise adjustment of drainage speed, reduced infection risks, and ease of operation for medical staff.

[0006] The device of this invention can not only monitor and collect cerebrospinal fluid pressure data in real time, but also manually adjust the drainage rate based on the real-time data, thereby ensuring the accuracy and safety of the drainage process. This control design effectively avoids over- or under-drainage situations common in traditional techniques, improving the safety of the entire treatment process. Therefore, this lumbar puncture drainage device has enormous clinical application potential and market demand, and will undoubtedly have a profound impact on the development of related medical fields. Summary of the Invention

[0007] This invention provides a lumbar puncture drainage device and method for continuously measuring cerebrospinal fluid pressure, addressing the problems of existing methods that cannot monitor cerebrospinal fluid pressure in real time or accurately control drainage rate, as well as the increased risk of infection and operational burden during repeated pressure measurement using pressure measuring tubes. Simultaneously, real-time cerebrospinal fluid pressure monitoring can also prevent intracranial hypotension syndrome caused by excessive cerebrospinal fluid drainage leading to a rapid or excessively low intracranial pressure drop.

[0008] The objective of this invention can be achieved through the following technical solutions: The first aspect of the present invention is to provide a lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure, comprising a puncture needle, a cerebrospinal fluid drainage container, an electronic pressure sensor, a drainage catheter, a lever, an electronic component encapsulation tube, and a signal transmission coil. The puncture needle is connected to the cerebrospinal fluid drainage container; the cerebrospinal fluid drainage container is connected to the drainage catheter; the electronic pressure sensor extends through the electronic component encapsulation tube to the cerebrospinal fluid drainage container; the lever is connected to the cerebrospinal fluid drainage container.

[0009] Furthermore, the puncture needle and the cerebrospinal fluid drainage container are connected using a cerebrospinal fluid drainage container connector.

[0010] Furthermore, the cerebrospinal fluid drainage container connector is a detachable structure, which allows the puncture needle and the cerebrospinal fluid drainage container to be separated.

[0011] Furthermore, the cerebrospinal fluid drainage container is provided with a cerebrospinal fluid drainage channel, and the drainage catheter is connected to the cerebrospinal fluid drainage channel.

[0012] Furthermore, the paddle is horizontally positioned inside the cerebrospinal fluid drainage channel.

[0013] Furthermore, the cerebrospinal fluid drainage channel is provided with a circular groove.

[0014] Furthermore, the circular groove is fitted into the opening of the drainage conduit; the circular groove is tightly connected to the drainage conduit.

[0015] Furthermore, the diameter of the circular groove is equal to the diameter of the drainage catheter opening.

[0016] Furthermore, the electronic pressure sensor is connected to an electronic manometer via the signal transmission coil, and the electronic manometer is equipped with a display screen.

[0017] A second aspect of the present invention is to provide a method for lumbar puncture drainage that continuously measures cerebrospinal fluid pressure, comprising: Needle insertion procedure: Keep the needle tip pointing towards the midline of the spine, with the needle body perpendicular to the skin surface of the back or the needle tip tilted about 15 degrees towards the head, and slowly insert the needle; when the needle tip encounters firm resistance, it indicates that the ligamentum flavum has been reached. Continue to slowly insert the needle until a feeling of emptiness is felt, indicating that the epidural space has been entered. At this time, remove the needle core and check for cerebrospinal fluid outflow; remove the needle core again to check for cerebrospinal fluid outflow. If there is no outflow, continue to slowly insert the needle 1-2 mm, indicating that the subarachnoid space has been entered; remove the needle core again to check for cerebrospinal fluid outflow. If there is outflow, the puncture is successful; if there is no outflow, gently rotate the needle body 90-180 degrees, or instruct the patient to take deep breaths / cough to increase abdominal pressure, or adjust the needle depth to about 1 mm; if there is still no outflow, repeat the puncture. Pressure measurement and drainage steps: The electronic pressure sensor detects the cerebrospinal fluid pressure in real time and transmits the pressure signal to the display screen of the electronic manometer through the signal transmission coil; by analyzing the pressure data on the display screen, the lever is adjusted to control the cerebrospinal fluid drainage speed so that the cerebrospinal fluid pressure is maintained within the set range; Collection steps: Cerebrospinal fluid flows into a cerebrospinal fluid drainage container through a drainage catheter, completing the continuous measurement of cerebrospinal fluid pressure and the collection of cerebrospinal fluid.

[0018] Compared with existing technologies, the beneficial effects of this invention are as follows: First, after the electronic pressure sensor acquires the drainage pressure data, the drainage speed is manually adjusted by controlling the lever through pressure data analysis, thereby ensuring precise control of the cerebrospinal fluid drainage process, avoiding over- or under-drainage, and improving the safety and stability of the system. The device also optimizes sealing and reliability, particularly through a tight connection between the circular groove and the drainage catheter opening, preventing cerebrospinal fluid leakage. The precise design of the drainage channel ensures smooth fluid flow and reduces the possibility of malfunctions. Furthermore, detachable connection structures, such as the cerebrospinal fluid drainage container connector, facilitate equipment maintenance and replacement, extending its service life. Finally, the device can also collect pressure data in real time and transmit it to a background monitoring device, enabling remote monitoring and management. In summary, this invention improves the safety, reliability, and ease of maintenance of cerebrospinal fluid drainage devices, solving the problems of existing technologies that cannot monitor cerebrospinal fluid pressure in real time, precisely control the drainage speed, and increase the risk of infection and operational burden, thus possessing significant application value. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This invention provides a schematic diagram of a lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure. Figure 2 This invention provides a schematic flowchart of a method for continuously measuring cerebrospinal fluid pressure during lumbar puncture drainage. Figure 1 The labels for the attached figures are as follows: 1. Puncture needle; 2. Cerebrospinal fluid drainage container; 3. Electronic pressure sensor; 4. Drainage catheter; 5. Paddle; 6. Electronic component encapsulation tube; 7. Signal transmission coil; 12. Cerebrospinal fluid drainage container connector; 24. Cerebrospinal fluid drainage channel; 241. Circular groove; 31. Electronic manometer; 311. Display screen. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] To address the problems existing in the background technology, a lumbar puncture drainage device and method for continuously measuring cerebrospinal fluid pressure has been developed, which has important practical significance.

[0024] like Figure 1 As shown, the first aspect of the present invention is to provide a lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure, including a puncture needle 1, a cerebrospinal fluid drainage container 2, an electronic pressure sensor 3, a drainage catheter 4, a pry bar 5, an electronic component encapsulation tube 6, and a signal transmission coil 7. The puncture needle 1 is connected to the cerebrospinal fluid drainage container 2; the cerebrospinal fluid drainage container 2 is connected to the drainage catheter 4; the electronic pressure sensor 3 extends through the electronic component encapsulation tube 6 to the cerebrospinal fluid drainage container 2; and the paddle 5 is connected to the cerebrospinal fluid drainage container 2.

[0025] The procedure includes a puncture needle 1, which is used to enter the spinal cavity via lumbar puncture and insert a drainage catheter to drain cerebrospinal fluid; a cerebrospinal fluid drainage container 2, which is used to collect the cerebrospinal fluid drained from the spinal cavity and ensure its safe storage; an electronic pressure sensor 3, which monitors the pressure changes of the cerebrospinal fluid in real time and transmits the pressure data to the display screen 311 of the electronic manometer 31 via a signal transmission coil 7; the pressure data on the display screen 311 is used to analyze whether to operate the lever 5; the drainage catheter 4 ensures smooth drainage of fluid; and the drainage rate is adjusted by the lever 5 based on the pressure data received from the display screen 311 of the electronic manometer 31 and the pressure changes of the cerebrospinal fluid, ensuring the accuracy of the drainage process; and precisely controlling the drainage volume of cerebrospinal fluid to avoid over- or under-drainage.

[0026] Furthermore, the puncture needle 1 and the cerebrospinal fluid drainage container 2 are connected by a cerebrospinal fluid drainage container connector 12; the cerebrospinal fluid drainage container connector 12 is a detachable structure, which can separate the puncture needle 1 and the cerebrospinal fluid drainage container 2.

[0027] The inclusion of a cerebrospinal fluid drainage container connector 12 enhances operational flexibility and convenience. During puncture, the physician can complete the procedure and confirm its accuracy before connecting the drainage container, reducing unnecessary operational risks. This design also facilitates equipment maintenance and replacement; if the puncture needle or drainage container malfunctions or requires replacement, individual components can be quickly disassembled and replaced, saving time and costs. Furthermore, the disassembly design aids in cleaning and disinfecting different components, ensuring the hygiene and safety of the equipment.

[0028] Furthermore, the cerebrospinal fluid drainage container 2 is provided with a cerebrospinal fluid drainage channel 24, and the drainage tube 4 is connected to the cerebrospinal fluid drainage channel 24.

[0029] The cerebrospinal fluid (CSF) drainage container 2 is equipped with a CSF drainage channel 24, through which the drainage conduit 4 is connected to the CSF drainage container 24. This connection method allows CSF to flow smoothly through the drainage conduit 4 into the drainage channel 24 in the container 2, thereby achieving effective CSF drainage. This design ensures the smoothness of the drainage process, and the precise connection helps reduce the risk of leakage during CSF drainage, improving the system's airtightness and safety.

[0030] Furthermore, the paddle 5 is horizontally positioned inside the cerebrospinal fluid drainage channel 24; The core purpose of horizontally positioning the paddle 5 inside the cerebrospinal fluid drainage channel is to ensure the accuracy and stability of cerebrospinal fluid drainage control by leveraging the paddle's influence on control precision. Since cerebrospinal fluid drainage relies on minute pressure differences, the weight of a vertically installed paddle would interfere with its opening adjustment, introducing measurement errors. A horizontal placement allows the paddle to move in a horizontal plane, maintaining a pure and stable correspondence between its drive signal and flow opening, thus ensuring the control system can respond sensitively to minute pressure changes. Furthermore, integrating the paddle internally into the flow channel significantly improves the sealing, safety, and reliability of the entire drainage system.

[0031] Furthermore, the cerebrospinal fluid drainage channel 24 is provided with a circular groove 241, which is fitted with the opening of the drainage tube 4; the circular groove 241 is tightly connected to the drainage tube 4; this is used to improve the airtightness of the cerebrospinal fluid drainage container 2; wherein, the diameter of the circular groove 241 is equal to the diameter of the opening of the drainage tube 4.

[0032] In this design, the circular groove 241 on the cerebrospinal fluid drainage channel 24 is tightly connected to the opening of the drainage catheter 4. The diameter of the groove perfectly matches the diameter of the drainage catheter opening, allowing for a tight fit. This design effectively improves the airtightness of the cerebrospinal fluid drainage container 2, ensuring no leakage or external contamination during cerebrospinal fluid drainage. Simultaneously, the tight connection between the circular groove and the drainage catheter ensures unobstructed drainage, enhancing the stability and reliability of the drainage system.

[0033] Furthermore, the electronic pressure sensor 3 is connected to the electronic pressure gauge 31 via the signal transmission coil 8, and the electronic pressure gauge 31 is equipped with a display screen 311. The display screen can be powered externally.

[0034] The electronic pressure sensor 3 is connected to the electronic manometer 31, which is equipped with a display screen 311. Through this connection, the electronic pressure sensor can monitor pressure changes in the drainage system in real time and transmit the data to the electronic manometer. The display screen 311 clearly shows the pressure values, allowing operators to check the system's operating status at any time, promptly detect potential pressure anomalies or malfunctions, and ensure the safety and stability of the drainage process. This design enhances the system's accurate monitoring capabilities and ease of operation.

[0035] The cerebrospinal fluid drainage container 2 is sealed, and the sealed environment maintains a constant pressure, reducing the impact on the pressure sensor's pressure data acquisition. The drainage speed is manually adjusted by the lever 5 based on the pressure data to avoid over-drainage or under-drainage.

[0036] like Figure 2As shown, a second aspect of the present invention is to provide a method for lumbar puncture drainage that continuously measures cerebrospinal fluid pressure, comprising the following steps: Needle insertion procedure S001: Keep the tip of puncture needle 1 pointing towards the midline of the spine, with the needle body perpendicular to the skin surface of the back or the needle tip tilted about 15 degrees towards the head, and slowly insert the needle; when the needle tip encounters firm resistance, it indicates that the ligamentum flavum has been reached. Continue to slowly insert the needle until a feeling of emptiness is felt, indicating that the epidural space has been entered. At this time, remove the needle core and there is no cerebrospinal fluid flowing out; remove the needle core again to check for cerebrospinal fluid flow. If there is no flow, continue to slowly insert the needle 1-2 mm, indicating that the subarachnoid space has been entered; remove the needle core again to check for cerebrospinal fluid flow. If there is flow, the puncture is successful; if there is no flow, gently rotate the needle body 90-180 degrees, or instruct the patient to take a deep breath / cough to increase abdominal pressure, or adjust the needle depth to about 1 mm; if there is still no flow, repeat the puncture. Pressure measurement and drainage step S002: The electronic pressure sensor 3 detects the cerebrospinal fluid pressure in real time and transmits the pressure signal to the display screen 311 of the electronic pressure gauge 31 through the signal transmission coil 7; by analyzing the pressure data on the display screen 311, the lever 5 is adjusted to control the cerebrospinal fluid drainage speed so that the cerebrospinal fluid pressure is maintained within the set range. Collection step S003: Cerebrospinal fluid flows into cerebrospinal fluid drainage container 2 through drainage catheter 4, completing the continuous measurement of cerebrospinal fluid pressure and the collection of cerebrospinal fluid.

[0037] It should be noted that the standardized needle insertion procedure (S001), guided by clear anatomical landmarks and tactile feedback, systematically regulates the entire process from breaking through the ligamentum flavum and epidural space to finally entering the subarachnoid space. This significantly reduces the risk of tissue damage or puncture failure due to improper operation, improving the accuracy and safety of the puncture. In the pressure measurement and drainage stage (S002), an electronic pressure sensor monitors the cerebrospinal fluid pressure in real time, and the data is transmitted instantly to the display screen via a signal transmission coil. This allows the operator to precisely adjust the paddle to control the drainage speed based on the visualized pressure dynamics. This not only achieves continuous acquisition and closed-loop control of pressure data but also effectively avoids the subjective errors and fluctuations present in traditional manual pressure measurement, greatly improving the accuracy of pressure monitoring and the precision of process control. In the collection step (S003), the cerebrospinal fluid flows into a dedicated container through a drainage catheter in a closed system, eliminating the possibility of external contamination. Combined with the aforementioned precise pressure control, this ensures the purity of the sample and its approximation to the physiological state, providing a reliable basis for subsequent testing. The overall process organically integrates puncture, pressure measurement, drainage and collection into a coherent, closed and monitorable sequence of operations, which improves operational efficiency and success rate while comprehensively optimizing the safety and accuracy of cerebrospinal fluid drainage.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. A lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure, characterized in that, The lumbar puncture drainage device for continuous measurement of cerebrospinal fluid includes a puncture needle (1), a cerebrospinal fluid drainage container (2), an electronic pressure sensor (3), a drainage catheter (4), a paddle (5), an electronic component encapsulation tube (6), and a signal transmission coil (7). The puncture needle (1) is connected to the cerebrospinal fluid drainage container (2); the cerebrospinal fluid drainage container (2) is connected to the drainage catheter (4); the electronic pressure sensor (3) extends through the electronic component encapsulation tube (6) to the cerebrospinal fluid drainage container (2); the paddle (5) is connected to the cerebrospinal fluid drainage container (2).

2. The lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure according to claim 1, characterized in that, The puncture needle (1) and the cerebrospinal fluid drainage container (2) are connected by a cerebrospinal fluid drainage container connector (12).

3. A lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure according to claim 2, characterized in that, The cerebrospinal fluid drainage container connector (12) is a detachable structure, which separates the puncture needle (1) and the cerebrospinal fluid drainage container (2).

4. A lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure according to claim 1, characterized in that, The cerebrospinal fluid drainage container (2) is provided with a cerebrospinal fluid drainage channel (24), and the drainage catheter (4) is connected to the cerebrospinal fluid drainage channel (24).

5. A lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure according to claim 4, characterized in that, The paddle (5) is horizontally positioned inside the cerebrospinal fluid drainage channel (24).

6. A lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure according to claim 5, characterized in that, The cerebrospinal fluid drainage channel (24) is provided with a circular groove (241).

7. A lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure according to claim 6, characterized in that, The circular groove (241) is fitted into the opening of the drainage conduit (4); the circular groove (241) is tightly connected to the drainage conduit (4).

8. A lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure according to claim 7, characterized in that, The diameter of the circular groove (241) is equal to the diameter of the opening of the drainage conduit (4).

9. A lumbar puncture drainage device for continuously measuring cerebrospinal fluid pressure according to claim 1, characterized in that, The electronic pressure sensor (3) is connected to the electronic pressure gauge (31) through the signal transmission coil (7), and the electronic pressure gauge (31) is provided with a display screen (311).

10. A method for continuous measurement of cerebrospinal fluid pressure during lumbar puncture drainage, characterized in that, include: Needle insertion steps: Keep the tip of the puncture needle (1) pointing towards the midline of the spine, with the needle body perpendicular to the skin surface of the back or the needle tip tilted about 15 degrees towards the head, and slowly insert the needle; when the needle tip encounters a strong resistance, it indicates that the ligamentum flavum has been reached, continue to slowly insert the needle until a feeling of emptiness appears, indicating that the epidural space has been entered, at this time the needle core is pulled out and no cerebrospinal fluid flows out; pull out the needle core again to check whether there is cerebrospinal fluid flowing out, if not, continue to slowly insert the needle 1~2mm, indicating that the subarachnoid space has been entered; pull out the needle core again to check whether there is cerebrospinal fluid flowing out, if so, the puncture is successful; if there is no cerebrospinal fluid flowing out, gently rotate the needle body 90-180 degrees, or instruct the patient to take a deep breath / cough to increase abdominal pressure, or adjust the needle depth to about 1mm; if there is still no cerebrospinal fluid flowing out, puncture again; Pressure measurement and drainage steps: The electronic pressure sensor (3) detects the cerebrospinal fluid pressure in real time and transmits the pressure signal to the display screen (311) of the electronic pressure gauge (31) through the signal transmission coil (7); the pressure data on the display screen (311) is analyzed to adjust the lever (5) to control the cerebrospinal fluid drainage speed so that the cerebrospinal fluid pressure is maintained within the set range; Collection steps: Cerebrospinal fluid flows into the cerebrospinal fluid drainage container (2) through the drainage catheter (4) to complete the continuous measurement of cerebrospinal fluid pressure and the collection of cerebrospinal fluid.

Images