Lumbar cistern drainage tube height automatic adjusting device and control method thereof

Abstract

The invention discloses an automatic lumbar cistern drainage tube height adjusting device and a control method thereof, belongs to the technical field of lumbar cistern drainage, and aims to solve the problems that the drainage speed frequently deviates from the range required by treatment and the sealing performance of the device is not easy to detect due to the fact that the hanging position of the drainage device is manually adjusted and the amplitude is inaccurate to control. A controller is arranged on one side of the supporting frame, a height adjusting assembly is arranged on the other side of the supporting frame, a drainage bottle is arranged on one side of the height adjusting assembly, a liquid inlet assembly is communicated with one side of the drainage bottle, a liquid pumping assembly is arranged on one side of the drainage bottle, the liquid pumping assembly is communicated with the liquid inlet assembly, and a drainage detection assembly is arranged on one side of the drainage bottle. According to the cerebrospinal fluid drainage device, double control over the drainage flow speed of cerebrospinal fluid is conveniently achieved, the drainage amount is automatically accumulated, the excessive drainage risk is effectively avoided, and the stability and safety of the drainage process are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of lumbar sac drainage technology, specifically to an automatic height adjustment device for lumbar sac drainage tubes and its control method. Background Technology

[0002] Lumbar cistern drainage is a common neurosurgical treatment. By placing a drainage tube to drain cerebrospinal fluid, it can reduce the stimulation of bloody cerebrospinal fluid on the brain and meninges, promote the circulation and absorption of cerebrospinal fluid, relieve cerebral vasospasm, improve cerebral ischemia, and reduce the occurrence of cerebral edema and cerebral infarction. Lumbar cistern drainage requires strict control of the drainage rate according to the patient's condition. Currently, intracranial pressure and drainage rate are mainly controlled by adjusting the height of the drainage bottle. The higher the drainage bottle, the more difficult it is for cerebrospinal fluid to enter the drainage bottle, and the slower the drainage rate; the lower the drainage bottle, the easier it is for cerebrospinal fluid to enter the drainage bottle, and the faster the drainage rate. Since factors such as intracranial pressure often change, the drainage rate of lumbar cistern may slow down. Therefore, it is often necessary to adjust the height of the drainage bottle frequently.

[0003] Currently, clinical practice uses manually suspended drainage bottles. Nursing staff need to frequently observe the fluid level and drip rate, and manually adjust the suspension position. It is not easy to perceive changes in drainage speed caused by fluctuations in the patient's intracranial pressure, resulting in inaccurate control of the height adjustment range. This causes the drainage speed to frequently deviate from the required treatment range, affecting the safety and effectiveness of the treatment. At the same time, the sealing of the drainage device is prone to failure during production and transportation. Before use, medical staff usually rely on visual inspection, which makes it difficult to identify potential sealing hazards, affecting subsequent drainage operations and creating safety risks. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic height adjustment device for the lumbar cistern drainage tube and its control method. By using this invention, the problems mentioned above, such as the inaccurate control of the amplitude when manually adjusting the suspension position of the drainage device, which leads to frequent deviations of the drainage speed from the required treatment range, and the difficulty in detecting the sealing of the device, are solved.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An automatic height adjustment device for the drainage tube of the lumbar sac includes a support frame. A controller is installed on one side of the support frame, and a height adjustment component is installed on the other side of the support frame. A drainage bottle is installed on one side of the height adjustment component. A liquid inlet component is connected to one side of the drainage bottle. A liquid pumping component is installed on one side of the drainage bottle and is connected to the liquid inlet component. A drainage detection component is installed on one side of the drainage bottle. A drain component is connected to the bottom of the drainage bottle. A drainage tube is connected to one end of the liquid inlet component. A clamping component is clamped on the outer wall of the drainage tube. A sealing detection component is installed on the top of the drainage bottle. A lifting component is installed on one side of the sealing detection component. A disinfection component is installed inside the sealing detection component and is connected to the clamping component.

[0006] Furthermore, the height adjustment assembly includes a frame fixedly connected to one side of the support frame, a servo motor mounted on one side of the frame, a threaded rod fixedly connected to the output end of the servo motor, the threaded rod being rotatably connected to the frame, a threaded block being threadedly connected to the outer wall of the threaded rod, a mounting plate being fixedly connected to one side of the threaded block, and the mounting plate being slidably connected to the frame.

[0007] Furthermore, the liquid inlet assembly includes a connector connected to one end of the drainage tube, one end of the connector being connected to a liquid inlet pipe, and a first three-way valve being installed on the liquid inlet pipe.

[0008] Furthermore, the clamping assembly includes a fixed frame clamping the outer wall of the drainage tube. The inner wall of the fixed frame has an arc-shaped groove that matches the shape of the drainage tube. Two sliding rods are slidably connected inside the fixed frame. An arc-shaped plate is fixedly connected to one end of each sliding rod, and the arc-shaped plate matches the shape of the drainage tube. A first spring is fixedly connected to one end of each sliding rod, and the other end of the first spring is fixedly connected to the inner wall of the fixed frame. A limit frame is provided on one side of the arc-shaped plate. An arc-shaped pressure block is slidably connected inside the limit frame. One side of the arc-shaped pressure block matches the shape of the arc-shaped groove. A pull rod is slidably connected inside the limit frame. One end of the pull rod is rotatably connected to the arc-shaped pressure block, and one end of the pull rod is fixedly connected to a screw, which is threadedly connected to the fixed frame.

[0009] Furthermore, the pump assembly includes a fixed plate fixedly connected to one side of the drainage bottle, a peristaltic pump is installed on one side of the fixed plate, the inlet of the peristaltic pump is connected to the inlet pipe, the outlet of the peristaltic pump is connected to the drip pipe, and the drip pipe is fixedly connected to the drainage bottle.

[0010] Furthermore, the drainage detection component includes a liquid flow meter installed on the drip tube, and a photoelectric drip rate sensor and an infrared ranging sensor are respectively installed on the top and bottom of the outer wall of the drainage bottle.

[0011] Furthermore, the drainage assembly includes a drainage pipe connected to the bottom of the drainage bottle, and a second three-way valve is installed on the drainage pipe.

[0012] Furthermore, the sealing detection assembly includes an air storage cylinder fixedly connected to the top of the drainage bottle. A first one-way valve and a second one-way valve are provided inside the air storage cylinder. Both the first one-way valve and the second one-way valve are connected to the drainage bottle. A detection cylinder is connected to the bottom of the air storage cylinder. A movable column is slidably connected inside the detection cylinder. A second spring is fixedly connected to one side of the movable column. A pressure sensor is installed at one end of the second spring. The pressure sensor is fixedly connected to the inner wall of the detection cylinder.

[0013] Furthermore, the lifting assembly includes an electric push rod installed on one side of the air storage cylinder, a lifting plate is fixedly connected to the movable end of the electric push rod, a piston is fixedly connected to one side of the lifting plate, and both the lifting plate and the piston are slidably connected to the inner wall of the air storage cylinder. The disinfection assembly includes a disinfection cylinder fixedly connected inside the gas storage cylinder. Several arc-shaped rubber rings are fixedly connected to the outer wall of the disinfection cylinder. A flexible tube is connected to the top of the disinfection cylinder. One end of the flexible tube is connected to a liquid outlet pipe. The liquid outlet pipe is fixedly connected to a fixed frame. One end of the liquid outlet pipe is connected to a branch pipe. Both ends of the branch pipe are equipped with conical nozzles. Several liquid outlet holes are opened through the conical nozzles.

[0014] The present invention also proposes another technical solution: a control method for an automatic height adjustment device for the lumbar sac drainage tube, comprising the following steps: S1: Connect one end of the drainage tube into the patient's body; S2: Connect the inlet assembly to the drainage tube; S3: The patient's cerebrospinal fluid is drained into the drainage bottle through the inlet assembly and pump assembly; S4: The flow rate, flow volume, and height of the drainage device are detected by the drainage detection component; S5: Based on the flow rate, the height of the drainage bottle is dynamically adjusted by the height adjustment component. When the height adjustment cannot meet the flow rate requirements, the peristaltic pump is activated by the controller to readjust the flow rate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By combining the height adjustment component and the pump fluid component, the limitations of the existing single height adjustment are overcome, and dual control of the cerebrospinal fluid drainage rate is achieved. The drainage volume is automatically accumulated, effectively avoiding the risk of over-drainage and significantly improving the stability and safety of the drainage process. By integrating the seal detection function into the drainage device, the device's seal can be quickly determined without external testing equipment by using the clean, sterile gas in the gas reservoir and a pressure sensor. This shortens clinical preparation time, allows for early detection of seal failures, and prevents cerebrospinal fluid contamination or abnormal drainage pressure caused by seal problems, thus providing a proactive guarantee for drainage safety. By using a lifting component to drive the disinfection component, the puncture point can be automatically sprayed with disinfectant, eliminating the need for medical staff to manually touch the puncture point, reducing the risk of drainage tube displacement or contamination, ensuring disinfection standardization, reducing the probability of local skin and intracranial infection, and not interfering with the normal drainage process. The clamping component can both fix the disinfection component in place at the puncture point and squeeze the drainage tube to achieve a seal, taking into account both disinfection positioning and seal detection requirements, simplifying operation steps, improving the functional integration of the device, and enhancing the convenience of clinical operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall side view structure of the present invention; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a schematic diagram showing the connection relationship between the height adjustment component, liquid inlet component, drainage tube, and sealing detection component of the present invention. Figure 5 for Figure 4 Enlarged view of point B; Figure 6 for Figure 4 Enlarged view of point C; Figure 7 This is a cross-sectional structural diagram showing the connection relationship between the drainage bottle, liquid inlet assembly, liquid pump assembly, drainage detection assembly, liquid discharge assembly, sealing detection assembly, and lifting assembly of the present invention. Figure 8 for Figure 7 Enlarged view of point D; Figure 9 for Figure 8 Enlarged view of point E; Figure 10 for Figure 7 Enlarged view at point F; Figure 11 for Figure 7 Enlarged view of point G; Figure 12 This is a cross-sectional structural diagram showing the connection relationship between the clamping component and the disinfection component of the present invention.

[0017] In the diagram: 1. Support frame; 2. Controller; 3. Height adjustment assembly; 31. Frame; 32. Servo motor; 33. Threaded rod; 34. Threaded block; 35. Mounting plate; 4. Drainage bottle; 5. Liquid inlet assembly; 51. Connector; 52. Liquid inlet pipe; 53. First three-way valve; 6. Clamping assembly; 61. Fixing frame; 62. Arc groove; 63. Slide rod; 64. Arc plate; 65. First spring; 66. Limiting frame; 67. Arc pressure block; 68. Pull rod; 69. Screw; 7. Pump assembly; 71. Fixing plate; 72. Peristaltic pump; 73. Drip tube; 8. Drainage detection assembly; 81. Liquid flow meter; 82. Photoelectric drip. Speed ​​sensor; 83. Infrared ranging sensor; 9. Drainage assembly; 91. Drainage pipe; 92. Second three-way valve; 10. Drainage pipe; 20. Sealing detection assembly; 201. Gas storage tank; 202. First one-way valve; 203. Second one-way valve; 204. Detection cylinder; 205. Moving column; 206. Second spring; 207. Pressure sensor; 30. Lifting assembly; 301. Electric push rod; 302. Lifting plate; 303. Piston; 40. Disinfection assembly; 401. Disinfection cylinder; 402. Arc-shaped rubber ring; 403. Hose; 404. Discharge pipe; 405. Branch pipe; 406. Conical nozzle; 407. Discharge hole. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0019] To address the technical problem of inaccurate control over the amplitude of manually adjusting the suspension position of the drainage device, leading to frequent deviations in drainage speed from the required treatment range, such as... Figures 1-10 and Figure 12 As shown, the following preferred technical solutions are provided: An automatic height adjustment device for the lumbar cistern drainage tube includes a support frame 1, which supports and secures all components. Self-locking casters are installed at the four corners of the bottom of the support frame 1 for easy movement and support of the device. These self-locking casters are existing technology and will not be elaborated upon here. A controller 2 is installed on one side of the support frame 1, controlling all electrical components. A height adjustment component 3 is installed on the other side of the support frame 1. A drainage bottle 4 is installed on one side of the height adjustment component 3, facilitating the collection of drained cerebrospinal fluid. A scale is provided on one side of the drainage bottle 4 for easy observation of the drainage volume. The height adjustment component 3 allows for adjustment of the height of the drainage bottle 4, enabling quick and easy adjustment of the drainage speed. An inlet is connected to one side of the drainage bottle 4. Component 5, the inlet component 5, can drain the patient's cerebrospinal fluid into the drainage bottle 4. A pump component 7 is provided on one side of the drainage bottle 4. The pump component 7 is connected to the inlet component 5. The pump component 7 can assist in adjusting the flow rate when the height adjustment cannot meet the flow rate requirements. A drainage detection component 8 is provided on one side of the drainage bottle 4. The drainage detection component 8 can detect the drainage flow rate, flow rate and the height of the drainage device. A drain component 9 is connected to the bottom of the drainage bottle 4. The drain component 9 facilitates the drainage of the cerebrospinal fluid collected after drainage. A drainage tube 10 is connected to one end of the inlet component 5. A clamping component 6 is clamped on the outer wall of the drainage tube 10. One end of the drainage tube 10 is connected to the patient's body and is fixed to the patient's body by external medical tape.

[0020] In use, the inlet assembly 5 is connected to the drainage tube 10. Then, based on the patient's position and intracranial pressure monitoring data, the controller 2 causes the height adjustment assembly 3 to move the drainage bottle 4, adjusting it to a suitable drainage height. This allows cerebrospinal fluid to flow through the drainage tube 10, the inlet assembly 5, and the pump assembly 7 into the drainage bottle 4. During the drainage process, the drainage detection assembly 8 detects the drainage rate, flow rate, and height of the drainage device. Based on the flow rate, the height adjustment assembly 3 dynamically adjusts the height of the drainage bottle 4. When the height adjustment cannot meet the flow rate requirements, the controller 2 causes the pump assembly 7 to readjust the flow rate, facilitating dual protection of stable flow rate. It automatically calculates the cumulative drainage volume, avoiding the risk of over-drainage. Compared to existing technologies that rely on a single height adjustment to change the flow rate, resulting in insufficient flexibility and accuracy, this technology enables dual control of the cerebrospinal fluid drainage flow rate, ensuring that the drainage speed always meets the usage requirements, thereby improving the stability and safety of the drainage process and reducing the risks caused by improper flow rate.

[0021] The top of the drainage bottle 4 is equipped with a sealing detection component 20, which stores clean and sterile gas to test the sealing performance of the drainage device before use. A lifting component 30 is provided on one side of the sealing detection component 20, and a disinfection component 40 is provided inside the sealing detection component 20. The disinfection component 40 is connected to the clamping component 6. The clamping component 6 can fix the disinfection component 40 at different positions of the drainage tube 10 according to the usage requirements, so that the spray position of the disinfection component 40 is aligned with the drainage tube 10 and the patient's puncture site, which is convenient for subsequent disinfection. At the same time, the clamping component 6 can easily squeeze the drainage tube 10 to make its inner wall fit tightly and seal it, which is convenient for subsequent testing.

[0022] Before drainage, when the drainage device is not connected to the patient, the sealing of the drainage device may fail during production and transportation. Therefore, it is necessary to test the sealing of the drainage device. At this time, the user pulls the clamping component 6 to insert the drainage tube 10 into the clamping component 6. Then, the user releases the clamping component 6 to clamp and fix it. Then, the draining component 9 is closed. After that, the user gently presses the clamping component 6 and rotates it. With continuous rotation, the clamping component 6 squeezes the drainage tube 10 to achieve a seal. Then, the controller 2 causes the lifting component 30 to descend, squeezing out the clean sterile gas in the seal detection component 20. This fills the drainage bottle 4, draining component 9, pumping component 7, inlet component 5, and drainage tube 10 with clean sterile gas. During the continuous movement of the lifting component 30, the clean sterile gas is compressed. The pressure will compress the detection structure of the sealing detection component 20. If the value of the detection structure decreases, it indicates that there is a leak in the drainage device. If the value of the detection structure remains unchanged, it indicates that there is no leak in the drainage device. This allows medical staff to quickly and intuitively judge the sealing of the device before drainage, avoiding cerebrospinal fluid contamination or abnormal drainage pressure caused by sealing failure. Compared with the existing technology that relies on external detection equipment and has cumbersome operation, the sealing detection function can be integrated into the device without additional tools, shortening the clinical preparation time. At the same time, by checking for sealing problems in advance, it provides a preliminary guarantee for the stability and safety of subsequent cerebrospinal fluid drainage. After the test is completed, the controller 2 causes the lifting component 30 to rise, so that the clean and sterile gas in the drainage bottle 4, drainage component 9, pump component 7, inlet component 5 and drainage tube 10 are re-drawn into the sealing detection component 20.

[0023] During drainage, the puncture site is an invasive interface between the drainage tube 10 and the body, where the skin is broken. Furthermore, the drainage tube 10 needs to be left in place for an extended period, making it susceptible to external contaminants and bacterial growth. Failure to disinfect promptly may lead to local skin infection. Therefore, regular disinfection of this area is necessary to maintain the cleanliness of the puncture site and ensure drainage safety. When disinfection is required, the controller 2 raises the lifting component 30, squeezing the disinfection component 40 to spray the disinfectant solution onto the puncture site. This allows medical staff to complete the disinfection operation without manually touching the puncture site, reducing operational steps and saving nursing time. By ensuring the disinfection coverage is aligned with the puncture site, manual operation can avoid touching the drainage tube 10, which could lead to displacement or contamination. Compared to existing technologies that rely on manual wiping for disinfection, which is cumbersome and prone to affecting drainage or increasing the risk of infection due to improper force and angle, this device integrates the disinfection function with the device. The lifting component 30 enables automated spray disinfection without the need for additional disinfection tools. This ensures the standardization and safety of the disinfection operation, maintains long-term cleanliness of the puncture site, effectively reduces the risk of local skin infection and intracranial infection, and avoids interference with the drainage process during disinfection, further improving the stability of the overall drainage treatment.

[0024] like Figures 3-4 and Figure 6 As shown, the height adjustment component 3 includes a frame 31 fixedly connected to one side of the support frame 1. A servo motor 32 is installed on one side of the frame 31. The servo motor 32 has a self-locking function. A threaded rod 33 is fixedly connected to the output end of the servo motor 32. The threaded rod 33 is rotatably connected to the frame 31. A threaded block 34 is threadedly connected to the outer wall of the threaded rod 33. A mounting plate 35 is fixedly connected to one side of the threaded block 34. The mounting plate 35 is slidably connected to the frame 31. The drainage bottle 4 is fixedly connected to the mounting plate 35. A mounting block is fixedly connected to one side of the drainage bottle 4, which facilitates the fixing of the drainage bottle 4 to the mounting plate 35.

[0025] like Figures 4-5 and Figures 7-8 As shown, the inlet assembly 5 includes a connector 51 connected to one end of the drainage tube 10. One end of the connector 51 is connected to an inlet tube 52. A first three-way valve 53 is installed on the inlet tube 52. The first three-way valve 53 facilitates switching the inlet path, performing cerebrospinal fluid sampling, or connecting to flushing equipment and other inlet-related operations to meet different functional requirements during the drainage process.

[0026] like Figure 5 , Figure 10 and Figure 12 As shown, the clamping assembly 6 includes a fixing frame 61 clamping the outer wall of the drainage tube 10. An arc-shaped groove 62 is formed on the inner wall of the fixing frame 61, which matches the shape of the drainage tube 10. Two sliding rods 63 are slidably connected inside the fixing frame 61. An arc-shaped plate 64 is fixedly connected to one end of each sliding rod 63, and the arc-shaped plate 64 matches the shape of the drainage tube 10. Both the arc-shaped plate 64 and one side of the arc-shaped groove 62 are made of anti-slip material to prevent slippage during clamping. A first spring 65 is fixedly connected to one end of each sliding rod 63, and the other end of the first spring 65 is fixedly connected to the inner wall of the fixing frame 61. A limit frame 66 is provided on one side of the arc-shaped plate 64, and a sliding mechanism is slidably connected inside the limit frame 66. The arc-shaped pressure block 67 has one side that matches the shape of the arc-shaped groove 62. A silicone pad that matches the shape of the arc-shaped groove 62 is provided on one side of the arc-shaped pressure block 67, which can better seal and prevent air leakage during testing, while reducing damage to the drainage tube 10. The silicone pad is existing technology and is not shown in the figure. A pull rod 68 is slidably connected inside the limiting frame 66. One end of the pull rod 68 is rotatably connected to the arc-shaped pressure block 67, and the other end of the pull rod 68 is fixedly connected to a screw 69. The screw 69 is threadedly connected to the fixed frame 61. During drainage, the elastic force of the first spring 65 causes the arc-shaped plate 64 to clamp the drainage tube 10 in conjunction with the arc-shaped groove 62, without affecting normal drainage. At this time, the screw 69 is not threadedly connected to the fixed frame 61.

[0027] like Figure 5 and Figures 7-9 As shown, the pump assembly 7 includes a fixing plate 71 fixedly connected to one side of the drainage bottle 4. A peristaltic pump 72 is installed on one side of the fixing plate 71. The inlet of the peristaltic pump 72 is connected to the inlet pipe 52, and the outlet of the peristaltic pump 72 is connected to the drip pipe 73. The drip pipe 73 is fixedly connected to the drainage bottle 4.

[0028] like Figures 7-8 As shown, the drainage detection component 8 includes a liquid flow meter 81 installed on the drip tube 73. The liquid flow meter 81 can detect the flow rate of cerebrospinal fluid in the drip tube 73 and accumulate the total drainage flow, providing data for the controller 2 to adjust the drainage speed. During initial calibration, a standard liquid with a known volume and flow rate is introduced into the drip tube 73. The detection reading of the liquid flow meter 81 is compared with the actual flow rate and flow of the standard liquid, and the sensor parameters are adjusted to make the detection value consistent with the standard value, ensuring the accuracy of subsequent drainage detection. A photoelectric drip rate sensor 82 and an infrared ranging sensor 83 are respectively installed on the top and bottom of the outer wall of the drainage bottle 4. The photoelectric drip rate sensor 82 can identify the drip rate of cerebrospinal fluid in the drip tube 73. The frequency of cerebrospinal fluid (CSF) dripping is measured, and the drip rate per unit time is calculated to help monitor the stability of the drainage rate. During initial calibration, a standard dripping device of known specifications is used to simulate CSF dripping. The sensor detects the standard dripping frequency, and the drip rate data output by the sensor is matched with the actual drip rate of the standard device. The infrared ranging sensor 83 can measure the height of the drainage bottle 4 relative to the preset reference plane of the device in real time, providing height data support for the height adjustment component 3 to dynamically adjust the height of the drainage bottle 4. During initial calibration, a specific reference height is first determined, the infrared ranging sensor 83 is aligned with the reference point and the reference reading is set, and then the drainage bottle 4 is moved to multiple known heights. The sensor detection value is compared with the actual height to calibrate the ranging accuracy of the sensor.

[0029] like Figure 3 and Figures 6-7 As shown, the drainage assembly 9 includes a drainage pipe 91 connected to the bottom of the drainage bottle 4. A second three-way valve 92 is installed on the drainage pipe 91. The second three-way valve 92 can control the opening and closing of the drainage pipe 91 to realize the drainage of the cerebrospinal fluid collected after drainage. At the same time, it can close the drainage channel in scenarios such as sealing detection to facilitate drainage and sealing detection of the device.

[0030] In use, the user pulls the screw 69 to move the pull rod 68 and the arc-shaped pressure block 67, causing the limiting frame 66 and the arc-shaped plate 64 to move synchronously. This causes the two sliding rods 63 to slide within the fixed frame 61 and compress the first spring 65. At this time, the drainage tube 10 is inserted into the fixed frame 61. Then, the user releases the screw 69, and the first spring 65 causes the arc-shaped plate 64 to clamp the drainage tube 10 in conjunction with the arc-shaped groove 62, thus fixing the drainage tube 10. Subsequently, based on the patient's position and intracranial pressure monitoring data, the controller 2 causes the servo motor 32 to rotate the threaded rod 33, causing the threaded block 34 to move the mounting plate 35 and the drainage bottle 4, adjusting them to a suitable drainage height. This allows cerebrospinal fluid to drain through the drainage tube 10, the inlet tube 52, and the drip tube 73 to the drainage point. Inside the drainage bottle 4, during the drainage process, the flow rate, volume, and height of the drainage device are detected by the liquid flow meter 81, photoelectric drip rate sensor 82, and infrared ranging sensor 83. Based on the flow rate, the height of the drainage bottle 4 is dynamically adjusted by the height adjustment component 3. When the height adjustment cannot meet the flow rate requirements, the peristaltic pump 72 is activated by the controller 2 to readjust the flow rate, thus providing dual protection for stable flow rate and automatically calculating the cumulative drainage volume to avoid the risk of over-drainage. Compared with existing technologies that rely on a single height adjustment to change the flow rate, resulting in insufficient flexibility and accuracy, this technology can achieve dual control of the cerebrospinal fluid drainage flow rate, ensuring that the drainage speed always matches the usage requirements, thereby improving the stability and safety of the drainage process and reducing the risks caused by improper flow rate.

[0031] To solve the technical problem that the sealing performance of the device is not easy to test, such as Figures 1-5 and Figures 7-12 As shown, the following preferred technical solutions are provided: like Figures 3-5 , Figures 7-9 and Figure 11 As shown, the sealing detection assembly 20 includes a gas storage cylinder 201 fixedly connected to the top of the drainage bottle 4. A first one-way valve 202 and a second one-way valve 203 are provided inside the gas storage cylinder 201. Both the first one-way valve 202 and the second one-way valve 203 are connected to the drainage bottle 4. A detection cylinder 204 is connected to the bottom of the gas storage cylinder 201. A moving column 205 is slidably connected inside the detection cylinder 204. A second spring 206 is fixedly connected to one side of the moving column 205. A pressure sensor 207 is installed at one end of the second spring 206. The pressure sensor 207 can detect changes in gas pressure inside the drainage device, thereby determining whether there is a leak. During initial calibration, a standard gas with a known pressure can be introduced, and its detection value can be compared with the standard pressure. The sensor parameters can be adjusted to make the two consistent to ensure detection accuracy. The pressure sensor 207 is fixedly connected to the inner wall of the detection cylinder 204.

[0032] like Figure 3 , Figure 7and Figure 11 As shown, the lifting assembly 30 includes an electric push rod 301 installed on one side of the gas storage cylinder 201. The movable end of the electric push rod 301 is fixedly connected to a lifting plate 302. A piston 303 is fixedly connected to one side of the lifting plate 302. The piston 303 and the gas storage cylinder 201 form a gas storage chamber, which can conveniently store clean and sterile gas and facilitate detection. Both the lifting plate 302 and the piston 303 are slidably connected to the inner wall of the gas storage cylinder 201.

[0033] like Figure 5 , Figure 8 and Figures 10-12 As shown, the disinfection assembly 40 includes a disinfection cylinder 401 fixedly connected to the air storage cylinder 201. The top of the disinfection cylinder 401 is provided with a sealing cap, which allows for easy addition of disinfectant after the sealing cap is removed. The sealing cap is existing technology and is not shown in the figure. Several through slots are opened through the top of the air storage cylinder 201 to prevent the internal air pressure from squeezing and stretching the disinfection cylinder 401 when the electric push rod 301 moves, driving the lifting plate 302 and piston 303. Several arc-shaped rubber rings 402 are fixedly connected to the outer wall of the disinfection cylinder 401. Through the elastic deformation of the arc-shaped rubber rings 402, the disinfectant can be easily squeezed out when the disinfection cylinder 401 is under pressure. A hose 403 is connected to the top of the disinfection cylinder 401. One end of the hose 403 is connected to a liquid outlet pipe 404, which is fixedly connected to the fixed frame 61.

[0034] One end of the outlet tube 404 is connected to a branch tube 405, and both ends of the branch tube 405 are equipped with conical nozzles 406. The conical nozzles 406 allow the disinfectant to flow out of the branch tube 405 in a conical shape, covering the drainage tube 10, the patient's puncture site, and a certain area of ​​skin around it. This not only avoids wasting disinfectant or contaminating surrounding clothing and sheets due to an excessively large spray area, but also prevents blind spots near the puncture point from being missed due to an insufficient spray area, ensuring comprehensive disinfection coverage. The conical nozzle 406 has several outlet holes 407. The outlet holes 407 allow the disinfectant in the conical nozzle 406 to be easily dispersed into a mist, increasing the contact area between the disinfectant and the skin at the puncture site, allowing the disinfectant to adhere more evenly to the puncture point and surrounding area. At the same time, it avoids local accumulation of disinfectant when it flows out in a single coarse stream, or irritation of broken skin due to excessive liquid flow force, thus improving the gentleness and effectiveness of disinfection.

[0035] Before drainage, when the drainage device is not connected to the patient, the sealing of the drainage device may fail during production and transportation. Therefore, it is necessary to test the sealing of the drainage device. At this time, the user pulls the clamping assembly 6 to insert the drainage tube 10 into the clamping assembly 6. Then, the user releases the clamping assembly 6 to clamp and fix it. Then, the second three-way valve 92 is closed, and then the screw 69 is slightly pressed and rotated to make the screw 69 threadedly connected to the fixing frame 61. 9. With continuous rotation, the arc-shaped pressure block 67 moves, causing the arc-shaped pressure block 67 to squeeze the drainage tube 10, thereby sealing the drainage tube 10 and sealing both ends of the drainage device. Then, the controller 2 causes the electric push rod 301 to extend, driving the lifting plate 302 and piston 303 to descend, causing the piston 303 to squeeze the clean and sterile gas in the gas storage cylinder 201 through the first one-way valve 202, filling the drainage bottle 4, drain pipe 91, drip pipe 73, inlet pipe 52 and drainage tube 10 with clean and sterile gas.

[0036] As the electric push rod 301 extends, it compresses clean, sterile gas. This gas pressure then squeezes the moving column 205, causing it to push the second spring 206 to compress the pressure sensor 207. The extension of the electric push rod 301 then stops. If the value of the detection structure decreases, it indicates that the drainage device is leaking. If the value remains unchanged, it indicates that the drainage device is not leaking. This allows medical staff to quickly and intuitively assess the device's sealing before drainage, preventing cerebrospinal fluid contamination or abnormal drainage pressure due to seal failure. Compared to existing technologies that rely on external detection equipment and involve cumbersome operations, this device integrates the seal detection function, eliminating the need for additional tools and shortening clinical preparation time. Furthermore, by identifying seal problems in advance, it provides a proactive guarantee for the stability and safety of subsequent cerebrospinal fluid drainage.

[0037] After the test is completed, the controller 2 causes the electric push rod 301 to retract, which drives the lifting plate 302 and piston 303 to rise. At this time, the lifting plate 302 does not contact the disinfection cylinder 401, so that the clean and sterile gas in the drainage bottle 4, drain pipe 91, drip pipe 73, inlet pipe 52 and drainage pipe 10 is drawn back into the gas storage cylinder 201, so that there is no residual gas in the drainage bottle 4, drain pipe 91, drip pipe 73, inlet pipe 52 and drainage pipe 10.

[0038] During drainage, the puncture site is an invasive interface between the drainage tube 10 and the human body, where the skin is broken. Furthermore, the drainage tube 10 needs to be left in place for an extended period, making it susceptible to contact with external contaminants or bacterial growth. Failure to disinfect promptly may lead to local skin infection. Therefore, regular disinfection of this area is necessary to maintain the cleanliness of the puncture site and ensure drainage safety. When disinfection is required, the controller 2 retracts the electric push rod 301, causing the lifting plate 302 and piston 303 to rise the disinfection cylinder 401. This deforms the arc-shaped rubber ring 402, allowing the disinfectant solution inside the disinfection cylinder 401 to be sprayed onto the puncture site through the hose 403, outlet pipe 404, branch pipe 405, conical nozzle 406, and outlet hole 407. This facilitates the process without requiring manual intervention by medical personnel. Disinfection can be completed simply by touching the puncture site, which not only reduces the number of steps and saves nursing time, but also ensures that the disinfection coverage is accurate and avoids displacement or contamination of the drainage tube 10 caused by manual operation. Compared with the existing technology that relies on manual wiping disinfection, which is cumbersome and prone to affecting drainage or increasing the risk of infection due to improper force and angle, this device integrates the disinfection function with the device and realizes automated spray disinfection with the lifting component 30. No additional disinfection tools are required, which can ensure the standardization and safety of disinfection operation, maintain the long-term cleanliness of the puncture site, effectively reduce the risk of local skin infection and intracranial infection, and avoid interference with the drainage process during disinfection, further improving the stability of the overall drainage treatment.

[0039] To better explain the above embodiments, the present invention also proposes another implementation method: a control method for the automatic height adjustment device of the lumbar sac drainage tube 10, comprising the following steps: Step 1: Connect one end of the drainage tube 10 into the patient's body; Step 2: Connect the liquid inlet assembly 5 to the drainage tube 10; Step 3: The patient's cerebrospinal fluid is drained into the drainage bottle 4 through the inlet assembly 5 and the pump assembly 7; Step 4: Use the drainage detection component 8 to detect the drainage rate, flow rate, and height of the drainage device; Step 5: Based on the flow rate, the height of the drainage bottle 4 is dynamically adjusted by the height adjustment component 3. When the height adjustment cannot meet the flow rate requirements, the peristaltic pump 72 is activated by the controller 2 to adjust the flow rate again.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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.

[0041] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The automatic height adjustment device for lumbar cistern drainage tube, comprising a support frame (1), characterized in that: The support frame (1) is provided with a controller (2) on one side, and a height adjusting assembly (3) on the other side, the height adjusting assembly (3) is provided with a drainage bottle (4) on one side, the drainage bottle (4) is communicated with a liquid inlet assembly (5) on one side, the drainage bottle (4) is provided with a pump liquid assembly (7) on one side, the pump liquid assembly (7) is communicated with the liquid inlet assembly (5), the drainage bottle (4) is provided with a drainage detection assembly (8) on one side, the drainage bottle (4) is communicated with a liquid outlet assembly (9) at the bottom, the liquid inlet assembly (5) is communicated with a drainage tube (10) on one end, the drainage tube (10) is clamped with a clamping assembly (6) on the outer wall, the drainage bottle (4) is provided with a sealing detection assembly (20) on the top, the sealing detection assembly (20) is provided with a lifting assembly (30) on one side, the sealing detection assembly (20) is provided with a disinfection assembly (40) in the inside, and the disinfection assembly (40) is connected with the clamping assembly (6).

2. The device of claim 1, wherein: The height adjusting assembly (3) comprises a frame (31) fixedly connected to one side of the support frame (1), a servo motor (32) mounted on one side of the frame (31), an output end of the servo motor (32) fixedly connected with a threaded rod (33), the threaded rod (33) is rotatably connected with the frame (31), a threaded block (34) is threadedly connected on the outer wall of the threaded rod (33), a mounting plate (35) is fixedly connected on one side of the threaded block (34), and the mounting plate (35) is slidably connected with the frame (31).

3. The device of claim 2, wherein: The liquid inlet assembly (5) comprises a connector (51) connected to one end of the drainage tube (10), a liquid inlet pipe (52) communicated with one end of the connector (51), and a first three-way valve (53) mounted on the liquid inlet pipe (52).

4. The device of claim 3, wherein: The clamping assembly (6) comprises a fixed frame (61) clamped on the outer wall of the drainage tube (10), an arc-shaped groove (62) formed in the inner wall of the fixed frame (61), the arc-shaped groove (62) being matched with the shape of the drainage tube (10), two sliding rods (63) slidably connected in the fixed frame (61), an arc-shaped plate (64) fixedly connected to one end of the two sliding rods (63), the arc-shaped plate (64) being matched with the shape of the drainage tube (10), a first spring (65) fixedly connected to one end of each of the two sliding rods (63), the other end of the first spring (65) being fixedly connected to the inner wall of the fixed frame (61), a limiting frame (66) provided on one side of the arc-shaped plate (64), an arc-shaped pressing block (67) slidably connected in the limiting frame (66), one side of the arc-shaped pressing block (67) being matched with the shape of the arc-shaped groove (62), a pull rod (68) slidably connected in the limiting frame (66), one end of the pull rod (68) rotatably connected with the arc-shaped pressing block (67), a screw rod (69) fixedly connected to one end of the pull rod (68), and the screw rod (69) being threadedly connected with the fixed frame (61).

5. The device of claim 4, wherein: The pump liquid assembly (7) comprises a fixed plate (71) fixedly connected to one side of the drainage bottle (4), a peristaltic pump (72) mounted on one side of the fixed plate (71), a liquid inlet of the peristaltic pump (72) communicated with the liquid inlet pipe (52), a liquid outlet of the peristaltic pump (72) communicated with a drop pipe (73), and the drop pipe (73) fixedly connected with the drainage bottle (4).

6. The device of claim 5, wherein: The drainage detection assembly (8) comprises a liquid flow meter (81) mounted on the drip tube (73), and photoelectric drop speed sensors (82) and infrared distance sensors (83) are mounted on the top and bottom of the outer wall of the drainage bottle (4) respectively.

7. The device of claim 6, wherein: The drainage assembly (9) comprises a drainage tube (91) communicated with the bottom of the drainage bottle (4), and a second three-way valve (92) is mounted on the drainage tube (91).

8. The device of claim 7, wherein: The sealing detection assembly (20) comprises an air cylinder (201) fixedly connected to the top of the drainage bottle (4), and a first one-way valve (202) and a second one-way valve (203) are arranged in the air cylinder (201) and communicated with the drainage bottle (4); a detection cylinder (204) is communicated with the bottom of the air cylinder (201), a moving column (205) is slidably connected in the detection cylinder (204), a second spring (206) is fixedly connected to one side of the moving column (205), one end of the second spring (206) is provided with a pressure sensor (207), and the pressure sensor (207) is fixedly connected to the inner wall of the detection cylinder (204).

9. The device of claim 8, wherein: The lifting assembly (30) comprises an electric push rod (301) mounted on one side of the air cylinder (201), and the active end of the electric push rod (301) is fixedly connected with a lifting plate (302); a piston (303) is fixedly connected to one side of the lifting plate (302), and the lifting plate (302) and the piston (303) are slidably connected with the inner wall of the air cylinder (201); The disinfection assembly (40) comprises a disinfection cylinder (401) fixedly connected in the air cylinder (201), a plurality of arc-shaped rubber rings (402) are fixedly connected to the outer wall of the disinfection cylinder (401), a hose (403) is communicated with the top of the disinfection cylinder (401), one end of the hose (403) is communicated with a liquid outlet pipe (404), the liquid outlet pipe (404) is fixedly connected with the fixed frame (61), one end of the liquid outlet pipe (404) is communicated with a branch pipe (405), and tapered nozzles (406) are arranged at both ends of the branch pipe (405); and a plurality of liquid outlet holes (407) are formed in the tapered nozzles (406).

10. A method for controlling the automatic adjustment of the height of a lumbar cistern drainage tube, using the automatic adjustment of the height of a lumbar cistern drainage tube as claimed in any one of claims 1 to 9, characterized in that, The method comprises the following steps: S1: one end of the drainage tube (10) is connected into the patient's body; S2: the liquid inlet assembly (5) is connected with the drainage tube (10); S3: the patient's cerebrospinal fluid is drained into the drainage bottle (4) through the liquid inlet assembly (5) and the pump liquid assembly (7); S4: the flow rate, flow volume and height of the drainage device are detected by the drainage detection assembly (8); S5: according to the flow rate of the drainage, the height of the drainage bottle (4) is dynamically adjusted by the height adjusting assembly (3); when the height adjustment cannot meet the flow rate requirement, the peristaltic pump (72) is adjusted again by the controller (2).

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