Surgical drainage tube device with automatic metering and remote alarm functions

Abstract

The invention relates to the technical field of surgical drainage tubes, in particular to a surgical drainage tube device with automatic metering and remote alarming functions, which comprises a connecting shell main body, a guide cylinder is fixedly connected to the top of the connecting shell main body, a drainage tube is arranged above the guide cylinder, and sealing assemblies are arranged at the upper end and the lower end of the guide cylinder. Compared with an existing drainage tube device, the drainage tube device has the advantages that due to the dual-sealing design, static plugging and dynamic adaptation are both considered, drainage liquid leakage is completely eradicated, the drainage tube device is simple in structure, convenient to use and high in practicability, and the service life of the drainage tube device is prolonged. The problem that liquid leakage is easily caused by connector shaking and assembly errors in traditional single sealing is solved, no extra locking tool is needed, medical staff can quickly complete replacement of a drainage tube or a drainage bag, clinical high-frequency nursing requirements are met, and drainage liquid leakage is avoided through efficient sealing.

Description

Technical Field

[0001] This invention relates to the field of surgical drainage tube technology, and more specifically to a surgical drainage tube device with automatic metering and remote alarm functions. Background Technology

[0002] Surgical drainage is an indispensable and crucial step after clinical surgical procedures (such as hepatobiliary surgery, thoracic surgery, and neurosurgery). Its core purpose is to promptly drain accumulated fluid, blood, bile, pus, and other secretions from the patient's body, reducing the risk of postoperative complications such as infection, anastomotic leakage, and internal bleeding, and creating conditions for recovery. Currently, the traditional surgical drainage devices widely used in clinical practice mainly rely on a "passive drainage and manual intervention" model.

[0003] Traditional drainage tubes lack automatic metering functions, requiring medical staff to manually open the cap periodically to check the drainage bag's markings, empty the drainage fluid, and weigh and record the contents. Manual estimation is not only prone to error but also fails to capture real-time dynamic changes in drainage flow rate. Frequent opening of the cap can also compromise the drainage system's seal, increasing the risk of wound infection for patients, while simultaneously consuming significant time for medical staff and increasing their workload.

[0004] Traditional drainage tubes are often connected to drainage bags and guiding devices using a single rubber ring seal or plug-in fixation, lacking dynamic adaptability. When patients turn over or move, causing slight traction on the tubes or minor assembly errors at the interfaces, drainage fluid leakage is very likely to occur. This not only contaminates the ward environment and increases the probability of cross-infection, but also leads to distorted measurement data, affecting medical staff's judgment of the patient's condition.

[0005] Drainage bags are typically only suspended by hooks or simply tied in place, lacking specific restraint mechanisms. When the patient moves, the drainage bag is prone to shaking and shifting, causing fluctuations in weighing data and potentially pulling on the connection between the drainage tube and the wound, resulting in patient pain. It can even lead to tube dislodgement, loosening of the connection, and interruption of the drainage process. Therefore, improving existing drainage tube devices and designing a new type of surgical drainage tube device with automatic metering and remote alarm functions to address these technical deficiencies and improve the overall practicality of the drainage tube device is particularly important. Summary of the Invention

[0006] The purpose of this invention is to provide a surgical drainage tube device with automatic metering and remote alarm functions. This solves the problem that traditional drainage tubes, drainage bags, and guiding devices are mostly connected by a single rubber ring seal or plug-in fixation, which lacks dynamic adaptability. When the patient turns over or moves, causing slight traction on the tube or minor assembly errors at the interface, drainage fluid leakage is very likely to occur. This not only contaminates the ward environment and increases the probability of cross-infection, but also leads to distorted metering data, affecting medical staff's judgment of the patient's condition.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A surgical drainage tube device with automatic metering and remote alarm functions includes a connecting shell body, a guide cylinder fixedly connected to the top of the connecting shell body, a drainage tube provided above the guide cylinder, sealing components provided at both the upper and lower ends of the guide cylinder, a limiting component provided inside the connecting shell body and outside the guide cylinder, a guiding component provided inside the drainage tube, and a cleaning tube fixedly connected to the outside of the drainage tube. The sealing assembly is used to increase the sealing performance of the connection between the drainage bag or drainage tube and the guide cylinder. The sealing assembly includes a connecting sleeve fixedly connected to the top of the guide cylinder. A first sealing ring is fixedly connected to both the upper and lower ends inside the connecting sleeve. A second sealing ring is slidably connected to the middle of the connecting sleeve. A connecting ring is fixedly connected to both the upper and lower ends inside the second sealing ring. The limiting component is used to limit the drainage bag inside the connecting shell body. The limiting component includes two sets of connecting frames that are rotatably connected to the inside of the connecting shell body and located outside the guide tube. A rotating frame is fixedly connected to the inner side of the connecting frame, and a clamping ring is fixedly connected to the bottom of the rotating frame. The guiding component is used to guide the liquid inside the inlet tube.

[0008] As a preferred embodiment of the present invention, a deformation groove is provided on the inner side of the connecting ring, and multiple sets of damping springs are fixedly connected to the ends of the two sets of second sealing rings that are close to each other, and the damping springs are fixedly connected to the second sealing rings.

[0009] As a preferred embodiment of the present invention, a sealing ring is fixedly connected to the outer side of the first sealing ring, and the sealing ring is fixedly connected to the connecting sleeve.

[0010] As a preferred embodiment of the present invention, a fixing sleeve is fixedly connected to the top of the guide tube and the top of the connecting sleeve, and a threaded groove is opened inside the fixing sleeve. A connecting tube is fixedly connected to the bottom of the drainage tube, and the connecting tube is inserted into the inside of the connecting sleeve. The drainage tube is threadedly connected to the threaded groove.

[0011] As a preferred embodiment of the present invention, a weighing sensor is fixedly connected to the bottom of the interior of the connecting shell body, and a flow meter is fixedly connected to the top of the interior of the connecting shell body and located outside the guide cylinder.

[0012] As a preferred embodiment of the present invention, two sets of connecting frames are provided between the two sets of connecting frames, and a movable rod is slidably connected to the connecting frame. The two sets of connecting frames are rotatably connected to the connecting frame and the movable rod, respectively.

[0013] As a preferred embodiment of the present invention, a limiting rod is fixedly connected to the top of the moving rod, a fixing groove is provided on the outer side of the connecting frame, a compression spring is fixedly connected to the outer side of the moving rod, and the compression spring is fixedly connected to the connecting frame.

[0014] As a preferred embodiment of the present invention, the guiding component includes a connecting cylinder fixedly connected to the outside of the drainage tube, a fixing ring fixedly connected inside the connecting cylinder, an elastic sheet fixedly connected to the outside of the fixing ring, a closing block fixedly connected to the end of the elastic sheet away from the fixing ring, and a movable cylinder slidably connected to the end of the connecting cylinder away from the fixing ring.

[0015] As a preferred embodiment of the present invention, the multiple sets of elastic sheets are in contact with each other in a conical structure design, the multiple sets of closed blocks are in contact with each other in a circular structure design, and multiple sets of elastic limiting blocks are fixedly connected to the outside of the moving cylinder. The multiple sets of elastic limiting blocks are distributed at equal intervals on the outside of the moving cylinder. A limiting groove is formed inside the elastic sheet, and the internal structure size of the limiting groove is designed to correspond to the external structure size of the elastic limiting block. The elastic sheet is limited and connected to the elastic limiting block through the limiting groove.

[0016] As a preferred embodiment of the present invention, a corrugated pipe is fixedly connected to the bottom of the drainage tube, and a displacement sensor is fixedly connected to the outside of the corrugated pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the design of the sealing component, with its dual sealing design, takes into account both static sealing and dynamic adaptation, completely eliminating drainage fluid leakage. This solves the problem of leakage caused by interface shaking and assembly errors in traditional single seals. The deformation groove on the inner side of the connecting ring can adapt to drainage tubes or drainage bags with different outer diameters. It can adapt to various specifications of consumables without replacing the sealing component, reducing the requirements for interface size accuracy. The elastic adaptation of the deformation groove and the buffering effect of the damping spring make the interface insertion and removal smooth without the need for additional locking tools. Medical staff can quickly complete the replacement of drainage tubes or drainage bags, meeting the needs of high-frequency clinical nursing. The efficient sealing prevents drainage fluid leakage, ensures the measurement accuracy of the weighing sensor and flow meter, and prevents drainage fluid from polluting the environment or contacting the patient's wound, reducing the risk of infection.

[0018] 2. In this invention, through the design of the limiting component, the two sets of connecting frames are linked by the connecting rod, and the clamping rings symmetrically clamp the drainage bag from both sides. With the mechanical locking of the limiting rod and the fixing groove, the drainage bag is completely prevented from shaking or shifting due to the patient turning over, moving or the tube being pulled. After the drainage bag is stabilized, it makes uniform contact with the weighing sensor and will not cause fluctuations in the weighing data due to displacement. At the same time, it prevents the drainage bag interface from detaching from the guide tube and sealing component, ensuring stable monitoring of the drainage fluid by the flow meter.

[0019] 3. In this invention, through the design of the guiding component, the closing block tightly fits in the initial state to form a sealing surface, blocking the backflow of drainage fluid. This solves the problems of traditional drainage tubes that rely on gravity to prevent backflow and are prone to infection due to changes in body position, significantly reducing the risk of wound infection. The conical structure of the elastic sheet provides an inclined guiding surface for the drainage fluid, guiding the fluid to flow at a uniform speed, avoiding turbulence and vortex generation, reducing interference with flow meter monitoring, and indirectly ensuring the accuracy of both flow rate and weight measurement. The elastic limiting block, in conjunction with multiple sets of limiting grooves, can automatically adjust the channel diameter according to the drainage fluid pressure, adapting to the needs of various scenarios from micro-drainage in neurosurgery to large-volume drainage in thoracic surgery. No manual adjustment is required; simply push the moving cylinder to unlock the elastic sheet. With the cleaning tube, the interior of the component can be thoroughly rinsed to completely remove residual fluid, blood clots, and other impurities, preventing tube blockage and extending the service life of the component. The elastic sheet and closing block are made of medical-grade elastic material, which is resistant to body fluid corrosion and has strong deformation recovery. The locking structure of the elastic limiting block can resist vibration caused by patient movement and tube traction, ensuring the stability of the drainage channel. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the connecting shell of the present invention; Figure 3 This is a schematic diagram of the fixing sleeve structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the connecting shell body of the present invention; Figure 5 This is a schematic diagram of the sealing assembly structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the connecting sleeve of the present invention; Figure 7 This is a schematic diagram of the second sealing ring structure of the present invention; Figure 8 This is a schematic diagram of the first sealing ring structure of the present invention; Figure 9 This is a schematic diagram of the limiting component structure of the present invention; Figure 10 This is a schematic diagram of the movable rod structure of the present invention; Figure 11 This is a schematic diagram of the guiding component structure of the present invention; Figure 12 This is a schematic diagram of the elastic sheet structure of the present invention.

[0021] In the diagram: 1. Connecting shell body; 2. Guide cylinder; 3. Drainage pipe; 4. Sealing assembly; 5. Limiting assembly; 6. Guide assembly; 7. Cleaning pipe; 8. Connecting sleeve; 9. First sealing ring; 10. Second sealing ring; 11. Connecting ring; 12. Connecting frame; 13. Rotating frame; 14. Clamping ring; 15. Deformation groove; 16. Damping spring; 17. Sealing ring; 18. Fixing sleeve; 19. Threaded groove; 20. Weighing sensor; 21. Flow meter; 22. Connecting frame; 23. Moving rod; 24. Limiting rod; 25. Fixing groove; 26. Compression spring; 27. Connecting cylinder; 28. Fixing ring; 29. ​​Elastic sheet; 30. Closing block; 31. Moving cylinder; 32. Elastic limiting block; 33. Limiting groove; 34. Bellows; 35. Displacement sensor. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Example

[0023] Please see Figures 1-12 The present invention provides a technical solution: A surgical drainage tube device with automatic metering and remote alarm functions includes a connecting shell body 1, a guide cylinder 2 fixedly connected to the top of the connecting shell body 1, a drainage tube 3 provided above the guide cylinder 2, sealing components 4 provided at both the upper and lower ends of the guide cylinder 2, a limiting component 5 provided inside the connecting shell body 1 and outside the guide cylinder 2, a guiding component 6 provided inside the drainage tube 3, and a cleaning tube 7 fixedly connected to the outside of the drainage tube 3. The sealing assembly 4 is used to increase the sealing of the connection between the drainage bag or drainage tube 3 and the guide tube 2. The sealing assembly 4 includes a connecting sleeve 8 fixedly connected to the top of the guide tube 2. The upper and lower ends of the connecting sleeve 8 are fixedly connected to a first sealing ring 9. The middle of the connecting sleeve 8 is slidably connected to a second sealing ring 10. The upper and lower ends of the second sealing ring 10 are fixedly connected to a connecting ring 11. The limiting component 5 is used to limit the drainage bag inside the connecting shell body 1. The limiting component 5 includes two sets of connecting frames 12 that are rotatably connected to the inside of the connecting shell body 1 and located outside the guide tube 2. A rotating frame 13 is fixedly connected to the inner side of the connecting frame 12, and a clamping ring 14 is fixedly connected to the bottom of the rotating frame 13. The guide component 6 is used to guide the liquid inside the inlet tube 3.

[0024] Furthermore, a deformation groove 15 is provided on the inner side of the connecting ring 11. Multiple damping springs 16 are fixedly connected to the ends of the two sets of second sealing rings 10 that are close to each other. The damping springs 16 are fixedly connected to the second sealing rings 10. A sealing ring 17 is fixedly connected to the outer side of the first sealing ring 9. The sealing ring 17 is fixedly connected to the connecting sleeve 8. When the drainage bag or drainage tube 3 is inserted into the inside of the connecting sleeve 8, it first contacts the connecting rings 11 at both ends of the two sets of second sealing rings 10. The deformation groove 15 provided on the inner side of the connecting ring 11 has an elastic deformation allowance that will expand or contract adaptively with the outer diameter of the interface, making the inner wall of the connecting ring 11 tight. The interface is fitted to the outer wall, initially eliminating gaps in the contact surface. As the interface continues to be inserted, it pushes the two sets of second sealing rings 10 closer together, thereby compressing the multiple sets of damping springs 16 between the two sets of second sealing rings 10. The compressed damping springs 16 generate a reverse elastic thrust, pushing the two sets of second sealing rings 10 to both sides, creating a dual contact between the connecting ring 11 and the outer wall of the interface—both passively fitting and actively pressing—strengthening the sealing pressure. This dual-seal design, with the fixed seal of the first sealing ring 9 and sealing ring 17, and the elastic seal of the second sealing ring 10 and damping springs 16, prevents leakage from both static sealing and dynamic adaptation aspects. The leakage problem is solved by addressing the issue of leakage caused by interface movement and assembly errors in traditional single-seal structures. The continuous clamping force of the damping spring 16 ensures that the sealing surface maintains effective contact pressure at all times, maintaining the sealing effect even after long-term use or slight wear of the interface. The deformation groove 15 of the connecting ring 11 provides it with a certain elastic deformation range, which can be adapted to drainage tubes 3 or drainage bags with different outer diameter specifications, reducing the requirements for interface dimensional accuracy and improving the versatility of the device. The elastic adaptation of the deformation groove 15 and the buffering effect of the damping spring 16 make it possible to insert the interface without excessive force, and the insertion and removal process is smooth. The sealing structure eliminates the need for additional locking components, allowing medical staff to quickly replace the drainage tube 3 or drainage bag, improving nursing efficiency. The sealing ring 17 is fixedly connected to the connecting sleeve 8 and the first sealing ring 9, avoiding the risk of sealing components falling off. The damping spring 16 has stable elastic recovery performance and can withstand repeated insertion and removal compression for a long time, extending the service life of the sealing component 4. The efficient sealing prevents drainage fluid leakage, ensuring the accuracy of data collected by the weighing sensor 20, flow meter 21, and other measuring components, avoiding measurement errors caused by leakage, and preventing drainage fluid from contaminating the ward environment or coming into contact with the patient's wound, reducing the risk of infection.

[0025] The fixed sleeve 18 has a threaded groove 19 inside. A connecting tube is fixedly connected to the bottom of the drainage tube 3. The connecting tube is inserted into the inside of the connecting sleeve 8, and the drainage tube 3 is threadedly connected to the threaded groove 19. The connecting tube at the bottom of the drainage tube 3 serves as an adapter interface. First, it is inserted into the inside of the connecting sleeve 8 along the central axis of the fixed sleeve 18. The connecting sleeve 8 provides precise radial positioning for the connecting tube, avoiding misalignment of the sealing surface caused by offset during insertion, and ensuring precise alignment of the contact surface between the connecting tube and the sealing component 4. After the connecting tube is inserted into place, the body of the drainage tube 3 is rotated. Utilizing the threaded engagement between the drainage tube 3 and the threaded groove 19 inside the fixed sleeve 18, the drainage tube 3 is slowly tightened axially downwards. The axial preload generated by the threaded connection continuously presses the connecting tube into the connecting sleeve 8. The outer wall of the connecting tube fits tightly against the sealing ring of the sealing assembly 4. The axial pressure of the threaded locking is transmitted to the second sealing ring 10 inside the connecting sleeve 8, further compressing the first damping spring 16 between the two sets of second sealing rings 10. This increases the clamping force of the second sealing ring 10 on the connecting tube. At the same time, the fit between the connecting tube and the first sealing ring 9 is also improved due to the axial pressure. Together with the sealing ring 17 on the outside of the first sealing ring 9, a synergistic effect of mechanical clamping and elastic sealing is formed, completely sealing the leakage path. The threaded connection itself has a self-locking characteristic, which can prevent the drainage tube 3 from loosening due to external forces such as patient movement and tube pulling. At the same time, the structure of the connecting tube being inserted into the connecting sleeve 8 further restricts the radial sway of the drainage tube 3, ensuring connection stability.

[0026] Secondly, a weighing sensor 20 is fixedly connected to the bottom of the connecting shell body 1, and a flow meter 21 is fixedly connected to the top of the connecting shell body 1 and outside the guide cylinder 2. The flow meter 21 is fixed to the top of the connecting shell body 1 and outside the guide cylinder 2, and its detection end is precisely connected to the drainage pipe 3, covering the flow path of the drainage fluid. When the drainage fluid flows from the drainage pipe 3 into the guide cylinder 2, it will pass through the detection area of ​​the flow meter 21 at a uniform speed. The flow meter 21 senses the flow velocity of the drainage fluid through built-in sensing elements, such as ultrasonic sensing, electromagnetic sensing, or impeller sensing. For example, ultrasonic sensing calculates the flow velocity by detecting the time difference of sound wave propagation in the fluid, and impeller sensing calculates the flow velocity by converting the rotation speed of the impeller driven by the fluid. 21. The flow rate signal is converted into an electrical signal and transmitted to the control main board of the device. The flow rate data is output in real time, and the staged drainage volume is initially calculated through integral calculation. The weighing sensor 20 is fixed to the bottom of the connecting shell body 1, directly supporting the drainage bag placed inside the shell. It is fixed with the limiting component 5 to prevent the drainage bag from shaking. After the drainage fluid flows into the drainage bag through the guide tube 2, the total weight of the drainage bag increases synchronously with the increase of the drainage volume. The pressure on the weighing sensor 20 gradually increases. The sensor senses the pressure deformation through the built-in strain gauge, converts the mechanical signal into an electrical signal, and transmits it to the control main board. The control main board presets the weight of the empty drainage bag as a reference value. By subtracting the reference value from the total weight collected in real time, the flow rate is accurately calculated. The system accumulates the total drainage volume and updates the data in real time. The mainboard compares and calibrates the phased integral flow rate of flowmeter 21 with the cumulative total volume of weighing sensor 20 in real time. When the deviation between the two data exceeds a preset threshold, the system automatically prioritizes the data from weighing sensor 20, resulting in more direct weight measurement and smaller errors. The system also marks flowmeter 21 as abnormal and can remotely alert medical staff for verification, ensuring the reliability of the measurement data. The dual sensors complement each other: flowmeter 21 monitors the flow rate in real time, while weighing sensor 20 accurately measures the total volume, avoiding the limitations of a single measurement method. For example, flowmeter 21 is easily affected by air bubbles in the drainage fluid, while weighing sensor 20 is not affected by fluid conditions. This dual verification keeps the measurement error within ±3%. Far superior to manual estimation, automatic data collection replaces manual labor, eliminating the need for medical staff to periodically open the cap to check, empty, and weigh the drainage fluid. This completely eliminates subjective errors and cumbersome operations associated with manual measurement, improving nursing efficiency. When the flow meter 21 detects an abnormal drainage rate, the system immediately triggers a local audible and visual alarm and remote notification, enabling faster identification of emergencies than simply monitoring the total volume. When the weighing sensor 20 detects that the cumulative drainage volume has reached a preset threshold, the system automatically alarms, preventing leakage and contamination or measurement interruption caused by overflowing drainage bags. It provides three-dimensional data on flow rate, total volume, and trend, allowing medical staff to view the real-time flow rate, cumulative total volume, and flow rate change curve of the drainage fluid via a remote terminal, providing objective data support for assessing postoperative recovery.

[0027] Furthermore, two sets of connecting frames 22 are provided between the two sets of connecting frames 12. A movable rod 23 is slidably connected to the connecting frame 22. The two sets of connecting frames 12 are rotatably connected to the connecting frame 22 and the movable rod 23 respectively. A limit rod 24 is fixedly connected to the top of the movable rod 23. A fixing groove 25 is provided on the outer side of the connecting frame 22. A compression spring 26 is fixedly connected to the outer side of the movable rod 23. The compression spring 26 is fixedly connected to the connecting frame 22. When no drainage bag is placed, the compression spring 26 is in a naturally extended state, pushing the movable rod 23 outward along the sliding path of the connecting frame 22. At this time, the two sets of connecting frames 12, rotatably connected to the movable rod 23 and the connecting frame 22 respectively, are in an outward opening posture under the action of the linkage transmission. The bottom clamping ring 14 is in an open state, leaving space for... Sufficient space allows for easy insertion of the drainage bag. After placing the drainage bag inside the connecting shell body 1 and above the weighing sensor 20, the weight of the drainage bag or the light pressure from medical staff on the top of the moving rod 23 causes the moving rod 23 to slide inward along the connecting frame 22, simultaneously compressing the outer compression spring 26. Since the two sets of connecting frames 12 are connected to the connecting frame 22 and the moving rod 23 respectively via rotating shafts, the axial sliding of the moving rod 23 is converted into the radial rotation of the connecting frame 12. The two sets of connecting frames 12 retract inward around their own rotation points, causing the clamping ring 14 at the bottom of the inner rotating frame 13 to move towards the center simultaneously, ultimately fitting against the outer wall of the drainage bag to form a clamping fixation. When the moving rod 23 slides to the preset clamping position and the clamping ring 14 is fully fitted against the drainage bag, the limiting rod 2 at the top of the moving rod 23... 4. Aligns precisely with the fixing groove 25 on the outer side of the connecting frame 22. The limiting rod 24 is embedded in the fixing groove 25 under the spring force or its own structural locking action, forming a mechanical lock to prevent the moving rod 23 from accidentally sliding and causing the connecting frame 12 to loosen, ensuring that the drainage bag is always in a stable state. When the drainage bag needs to be replaced, medical staff manually move the limiting rod 24 to disengage it from the fixing groove 25. At this time, the compression spring 26 releases its elastic potential energy, pushing the moving rod 23 to slide outward along the connecting frame 22. Through the linkage transmission, the two sets of connecting frames 12 open outward, and the clamping ring 14 releases the clamp on the drainage bag, allowing the drainage bag to be easily removed. The two sets of connecting frames 12 achieve synchronous clamping through linkage, and the clamping ring 14 forms a symmetrical clamping force on the drainage bag from both sides, completely preventing the drainage bag from slipping out. Even with patient turning, movement, or tubing traction causing shaking or displacement, once the drainage bag is securely fixed, the bottom maintains uniform contact with the weighing sensor 20, preventing fluctuations in weighing data due to displacement. This also prevents the drainage bag interface from detaching from the guide tube 2 and sealing assembly 4, ensuring stable monitoring of the drainage fluid by the flow meter 21 and indirectly improving the accuracy of automatic measurement. The clamping process requires no additional tools; simply inserting the drainage bag and gently pressing it in two steps completes the limiting operation. Unlocking is achieved by simply moving the limiting rod 24, allowing medical staff to quickly replace the drainage bag, significantly improving nursing efficiency. This is especially suitable for scenarios requiring frequent drainage bag changes post-operatively. The mechanical linkage and spring transmission structure are durable and can withstand repeated insertion, removal, and clamping wear, minimizing the risk of malfunction.The locking design of the limiting rod 24 and the fixing groove 25 effectively prevents accidental unlocking caused by external forces such as patient movement and collisions, ensuring that the drainage bag remains stable throughout its postoperative period and adapting to various scenarios such as wards and patient transport.

[0028] Furthermore, the guide assembly 6 includes a connecting cylinder 27 fixedly connected to the outside of the drainage tube 3. A fixing ring 28 is fixedly connected inside the connecting cylinder 27, and an elastic sheet 29 is fixedly connected to the outside of the fixing ring 28. A closing block 30 is fixedly connected to the end of the elastic sheet 29 away from the fixing ring 28. A movable cylinder 31 is slidably connected to the inside of the connecting cylinder 27 and to the end away from the fixing ring 28. Multiple sets of elastic sheets 29 are in contact with each other in a conical structure, and multiple sets of closing blocks 30 are in contact with each other in a circular structure. Multiple sets of elastic limiting blocks 32 are fixedly connected to the outside of the movable cylinder 31, and the multiple sets of elastic limiting blocks 32 are evenly distributed on the outside of the movable cylinder 31. A limiting groove 33 is formed inside the elastic sheet 29, and the internal structure size of the limiting groove 33 is the same as that of the elastic limiting block 32. The external structure is designed with corresponding dimensions. The elastic sheet 29 is connected to the elastic limiting block 32 through the limiting groove 33. When no drainage fluid is introduced, multiple sets of elastic sheets 29 adhere to each other due to their own elasticity, forming a conical structure. The closing block 30 at the end is in close contact to form a complete circular sealing surface, completely blocking the internal channel of the drainage tube 3. In this state, it can effectively prevent the liquid in the drainage bag from flowing back to the patient's wound, structurally eliminating the risk of infection caused by backflow. At this time, the moving cylinder 31 is in the initial position inside the connecting cylinder 27 away from the fixing ring 28. The elastic limiting block 32 is not engaged with the limiting groove 33 of the elastic sheet 29, and the elastic sheet 29 can deform freely. When the drainage fluid in the patient's body flows along the drainage tube 3 to the connecting cylinder 27, the liquid pressure acts on the closing block 30 and the elastic sheet. Inside the elastic plate 29, as the hydraulic pressure gradually increases, the elastic plate 29 overcomes its own elasticity and opens outward, the conical structure gradually unfolds, and an annular flow channel is formed between the closing blocks 30. The drainage liquid flows uniformly along the conical inner wall of the elastic plate 29, avoiding flow velocity fluctuations caused by liquid turbulence. During the opening process of the elastic plate 29, it pushes the moving cylinder 31 to slide away from the fixed ring 28 along the inner wall of the connecting cylinder 27. When the elastic plate 29 opens to the preset angle, the elastic limiting block 32 on the outside of the moving cylinder 31 is exactly aligned with the limiting groove 33 inside the elastic plate 29. Under its own elastic action, the elastic limiting block 32 embeds into the limiting groove 33, forming a mechanical lock, fixing the opening angle of the elastic plate 29, ensuring the stability of the drainage channel, and avoiding repeated opening of the elastic plate 29 due to hydraulic pressure fluctuations. If the drainage fluid flow rate increases significantly, such as with a large amount of drainage in a short period after surgery, the fluid pressure will exceed the locking force of the elastic limiting block 32, pushing the elastic sheet 29 to open further. At the same time, the elastic limiting block 32 will disengage from the current limiting groove 33 and continue to slide with the moving cylinder 31 until it is embedded in the next set of limiting grooves 33 and relocked. This design can adaptively adjust the channel diameter according to the drainage fluid pressure. The higher the flow rate, the larger the channel, reducing the fluid flow resistance. When the flow rate decreases, the elastic sheet 29 resets under its own elasticity, and the elastic limiting block 32 re-embeds into the corresponding limiting groove 33, maintaining the matching between the channel and the flow rate. When the drainage tube 3 needs to be cleaned, the moving cylinder 31 is pushed into the connecting cylinder 27, forcing the elastic limiting block 32 to disengage from the limiting groove 33 and releasing the locking of the elastic sheet 29.At this time, the elastic sheet 29 can be fully opened or deformed in the reverse direction, facilitating the injection of cleaning fluid through the outer cleaning tube 7 to thoroughly flush away residual fluid or impurities on the inner walls of the elastic sheet 29, the closing block 30, and the connecting tube 27, preventing bacterial growth. In the initial closed state, the sealing surface formed by the closing block 30 can block the backflow of drainage fluid, solving the problem that traditional drainage tubes 3 rely solely on gravity to prevent backflow and are prone to backflow due to changes in body position. This significantly reduces the probability of wound infection and improves postoperative safety for patients. The conical structure of the elastic sheet 29 provides a natural inclined guiding surface for the drainage fluid, guiding the liquid to flow uniformly along a fixed path, avoiding turbulence and vortex generation, reducing interference with the flow meter 21, and indirectly ensuring the accuracy of both flow rate and weight measurement. At the same time, it avoids pipe vibration caused by liquid impact and protects the fit stability of the sealing component 4. The cooperation between the elastic limiting block 32 and multiple sets of limiting grooves 33 allows the elastic sheet 29 to achieve multiple opening angle locks, adapting to the drainage needs of different surgical scenarios, and meeting the needs of different patients without replacing components. The device adapts to different postoperative flow rates, enhancing its versatility. After the movable tube 31 is unlocked, the elastic plate 29 can fully open, working in conjunction with the cleaning tube 7 on the outside of the drainage tube 3 to thoroughly flush the inside of the component, removing residual drainage fluid, blood clots, and other impurities. This prevents tube blockage and bacterial growth, ensuring smooth drainage and extending the reusability of the component or reducing the clogging failure rate of disposable components. The elastic plate 29 and the closing block 30 are made of medical-grade elastic material, resistant to body fluid corrosion and with strong deformation recovery, capable of withstanding long-term repeated opening and closing without failure. The locking structure of the elastic limiting block 32 provides stable locking, resisting vibrations caused by patient movement and slight traction of the tube, ensuring stable channel status during drainage and preventing accidental closure or excessive opening. The entire guiding process requires no manual adjustment by medical staff, relying entirely on hydraulic pressure to automatically achieve closure, opening, and locking, without increasing the complexity of nursing operations. During cleaning, simply pushing the movable tube 31 unlocks the device, making operation simple and efficient, meeting the actual needs of high-frequency clinical nursing.

[0029] Furthermore, a corrugated tube 34 is fixedly connected to the bottom of the drainage tube 3, and a displacement sensor 35 is fixedly connected to the outside of the corrugated tube 34. The corrugated tube 34 is fixed to the bottom of the drainage tube 3, connecting the drainage tube 3 and the guide tube 2. It has a retractable corrugated structure and good axial elastic deformation capability. When the patient turns over, gets out of bed, or accidentally pulls on the drainage tube 3, the pulling force will be directly applied to the corrugated tube 34. The corrugated tube 34 absorbs the external force through its own stretching or compression, forming a buffer stroke, avoiding the direct transmission of the pulling force to the connection interface between the drainage tube 3 and the guide tube 2, such as the threaded connection and the connection of the sealing component 4, reducing the risk of loosening or falling off the interface. At the same time, the radial flexibility of the corrugated tube 34 can adapt to the slight bending of the drainage tube 3, avoiding the tube from being pulled out of place. In case of blockage, the displacement sensor 35 is fixed to the outside of the bellows 34, closely fitting the corrugated wall of the bellows 34. Its detection end moves synchronously with the expansion and contraction of the bellows 34. When the bellows 34 undergoes tensile or compressive deformation, the displacement sensor 35 senses the amount of deformation displacement through its built-in sensing element. For example, a resistive sensor calculates the displacement by measuring the change in resistance caused by deformation, while a capacitive sensor converts the change in the distance between the plates into an electrical signal. The sensor transmits the displacement signal to the control board of the device in real time. The control board presets a safe displacement threshold. When the detected displacement exceeds the threshold, a local audible and visual alarm and a remote terminal push are immediately triggered, indicating excessive tension in the pipeline. If the displacement increases suddenly, it is determined to be an emergency tension risk, triggering a high-level alarm. The bellows 34 buffers the external force. During this process, the drainage channel is kept unobstructed to prevent narrowing or turbulence caused by the buffer structure. The displacement sensor 35 only monitors deformation and does not come into contact with the drainage fluid, thus not interfering with the drainage process and avoiding malfunctions caused by bodily fluid corrosion. When the displacement sensor 35 detects continuous deformation, the system will determine through an algorithm that the pipeline is under abnormal stress. In addition to alarming, it can also link with the previous limiting component 5 to further clamp the drainage bag, preventing the drainage bag from shifting and aggravating the pipeline traction, forming a closed loop of buffering-monitoring-linkage protection. The elastic buffer of the corrugated pipe 34 completely solves the problem of easy detachment due to the rigid connection of the traditional drainage pipe 3. It can absorb unexpected pulling forces, protecting the threaded connection and sealing component 4 of the connection interface between the drainage pipe 3 and the guide cylinder 2 from direct impact, greatly reducing the risk of pipeline detachment. To mitigate the risk of interface leakage, and specifically for scenarios with extremely high requirements for tubing stability, such as neurosurgery and thoracic surgery, the elastic coefficient and length of the corrugated tube 34 can be adjusted to adapt to the traction protection needs of different departments. The displacement sensor 35 enables visual monitoring of tubing deformation, replacing traditional visual inspections by medical staff. This allows for the immediate detection of potential risks such as unconscious patient traction or tubing entanglement, preventing seal failure or drainage interruption due to traction. In case of tubing bends or blockages, alarm signals are linked to remote terminals, allowing medical staff to monitor tubing status without frequent ward rounds. This is particularly suitable for scenarios requiring centralized management, such as intensive care and postoperative rehabilitation, improving nursing efficiency. The corrugated tube 34 maintains unobstructed drainage channels during buffering traction, and its smooth, expandable inner wall ensures proper drainage.The corrugated pipe 34 prevents turbulence and stagnation of the drainage fluid due to deformation, avoiding interference with the flow rate monitoring of the flow meter 21 and the total volume measurement of the weighing sensor 20, thus indirectly ensuring the accuracy of automatic measurement. Compared with traditional rigid connecting pipes, the flexibility of the corrugated pipe 34 can adapt to various patient positions such as sitting, lying down, and turning over, reducing pipe bending and blockage caused by changes in position, and ensuring continuous and stable drainage. The corrugated pipe 34 is made of medical-grade elastic material, which is resistant to body fluid corrosion, repeated deformation, and has a long service life. The displacement sensor 35 is fixed on the outside and does not come into direct contact with the drainage fluid, reducing the probability of contamination and failure, and is suitable for long postoperative periods. In its intended use, the compact design does not increase the volume or weight of the drainage tube 3, minimizing restrictions on patient movement and improving postoperative patient comfort and freedom of movement. Combined with the self-locking characteristics of the threaded connection and the elastic compression structure of the sealing component 4, it forms triple protection: the threaded connection prevents loosening, the sealing component 4 prevents leakage, and the bellows tube 34 and displacement sensor 35 prevent pulling, comprehensively enhancing the overall reliability of the device. The monitoring data from the displacement sensor 35 can be linked with a cloud system to generate a tube deformation trend curve. Medical staff can review historical data to analyze the impact of patient activity on the tube and optimize nursing plans.

[0030] In this embodiment, the specific implementation scenario is as follows: In actual use, corresponding parameters are preset according to the needs of different departments such as hepatobiliary surgery, thoracic surgery, and neurosurgery. For neurosurgery patients, a low elastic coefficient corrugated tube 34 is selected to avoid excessive traction leading to intracranial hypotension. For thoracic surgery patients, the flow meter 21 is activated in bubble monitoring mode to assist in judging the recovery of pneumothorax. For hepatobiliary surgery patients, the guide component 6 is activated in high flow rate adaptation mode to cope with a large amount of bile drainage in the early postoperative period. According to the specifications of the drainage bag, the compression spring 26 of the limiting component 5 is elastically adjusted to ensure that the clamping ring 14 firmly clamps the drainage bags of different capacities. At the same time, the weight of the empty bag is recorded into the control motherboard to provide a benchmark calibration value for the weighing sensor 20. Medical staff check the sealing ring 17 and the first seal of the sealing component 4. Check if the sealing ring 9 is intact. Insert the connecting tube at the bottom of the drainage tube 3 into the connecting sleeve 8 and tighten it through the threaded groove 19 of the fixing sleeve 18 to ensure that the axial preload makes the second sealing ring 10 press against the outer wall of the connecting tube without loosening or leakage. Push the moving cylinder 31 of the guide assembly 6 to verify that the elastic plate 29 opens and closes smoothly, the closing block 30 seals tightly, and the interface of the cleaning tube 7 is unobstructed. After the operation, place the distal end of the drainage tube 3 at the patient's drainage site and fix the proximal end to the guide cylinder 2 through a threaded connection. The connecting ring 11 in the connecting sleeve 8 adapts to the outer diameter of the connecting tube through the deformation groove 15. The damping spring 16 provides continuous elastic clamping force, which, together with the sealing ring 17, forms a double seal to prevent leakage of drainage fluid during the operation and contamination of the surgical field. Place the drainage bag inside the connecting shell body 1 and place it in the... Above the weighing sensor 20, the gravity-triggered moving rod 23 of the drainage bag slides inward, which, through the linkage of the connecting frame 12, drives the clamping ring 14 to clamp the drainage bag from both sides. The limiting rod 24 is embedded in the fixing groove 25 and locked to ensure that the drainage bag does not shift when the patient's position is adjusted during the operation. The weighing sensor 20 is subjected to uniform force. The control main board is turned on, the flow meter 21 monitors the initial drainage flow rate in real time, the weighing sensor 20 records the cumulative drainage volume, the displacement sensor 35 initializes the zero displacement reference, and the system automatically links with the nurse station monitoring center to establish a personal drainage data file for the patient and set a warning threshold. When the patient turns over, sits up, or gets out of bed after surgery, the pulling force is applied to the drainage tube 3. The corrugated tube 34 absorbs the pulling force through its own expansion and contraction, avoiding the transmission of the pulling force to the threaded connection and sealing component 4. If the pulling force exceeds the preset threshold, the displacement sensor 35 immediately sends an electrical signal to control the mainboard to trigger a local audible and visual alarm. Simultaneously, a remote notification is sent to the medical staff's mobile terminal, indicating excessive tubing pulling. Medical staff can then adjust the patient's position or fix the tubing in a timely manner. During drainage fluid flow, the elastic plate 29 of the guide component 6 automatically opens due to hydraulic pressure. The conical structure guides the liquid to flow at a uniform speed, preventing turbulence from causing fluctuations in the flow meter 21 data. When the drainage fluid velocity increases, the elastic plate 29 further opens, and the elastic limiting block 32 embeds into the next set of limiting grooves 33 to lock, expanding the flow channel, reducing liquid resistance, and ensuring smooth drainage. The nurse station monitoring center displays the patient's drainage data in real time, the flow meter 21 outputs the real-time flow rate, and the weighing sensor 20 updates the cumulative total.The system automatically compares the data from both. If the flow meter 21 deviates due to bubble interference, it automatically prioritizes the data from the weighing sensor 20 and marks the flow meter 21 as abnormal, prompting further verification. When the drainage fluid color is abnormal, medical staff can view the flow rate change curve through a remote terminal and, combined with the total increase trend of the weighing sensor 20, quickly assess the patient's condition. The closing block 30 of the guide component 6 always maintains a reverse seal, preventing backflow of fluid from the drainage bag even when the patient is inverted, such as when turning over, thus reducing the risk of wound infection. When the weighing sensor 20 detects that the cumulative drainage fluid volume is close to 80% of the drainage bag's capacity, the system triggers a replacement warning. Medical staff bring a new drainage bag to the ward, manually move the limit rod 24 to disengage it from the fixing groove 25, and compress the spring 26 to push... The movable rod 23 slides outward, and the connecting frame 12 opens the clamping ring 14 in conjunction, removing the full drainage bag. After replacing it with a new drainage bag, the clamping and locking steps are repeated. The system automatically identifies the weight of the new empty bag and recalibrates. The entire process does not require interruption of drainage. The threaded connection and sealing component 4 remain sealed to prevent drainage fluid leakage or air from entering the tubing. 3-5 days post-surgery, if the drainage fluid becomes viscous or a small amount of sediment appears, medical staff inject saline through the cleaning tube 7 to push the movable cylinder 31 of the guide component 6, causing the elastic limiting block 32 to disengage from the limiting groove 33. The elastic plate 29 fully opens, and the cleaning fluid can thoroughly rinse the inner wall of the connecting cylinder 27, the elastic plate 29, and the closing block 30, removing residual fluid and impurities to prevent tubing blockage. After cleaning, the movable cylinder 31 is released. The elastic sheet 29 automatically resets, and the closing block 30 re-seals, without affecting subsequent drainage. If the patient experiences internal bleeding after surgery, the flow meter 21 detects a sudden increase in drainage flow rate exceeding a preset threshold, and the system immediately triggers a high-level alarm. The local buzzer sounds continuously, and a suspected internal bleeding warning is sent remotely to the attending physician and nurses. Simultaneously, the flow rate curve and the total increase data from the weighing sensor 20 are displayed. Medical staff can quickly observe the color of the drainage fluid through the drainage tube 3 and, combined with vital signs, determine whether emergency surgery for hemostasis is necessary. If the tube is blocked, the flow meter 21 detects a zero flow rate, and the weighing sensor 20 data remains unchanged for an extended period, triggering a tube blockage alarm. Medical staff can gently squeeze the corrugated tube 34, utilizing the negative pressure generated by its elastic deformation to clear the blockage. The drainage tube 3 can be drained through the cleaning tube 7, or thrombolytic drugs can be injected to avoid blockage and poor drainage. If the sealing component 4 leaks slightly due to wear of the connecting tube, the first sealing ring 9 and the sealing ring 17 can block most of the drainage fluid. At the same time, the system identifies the leakage by the data deviation between the weighing sensor 20 and the flow meter 21, triggering a sealing abnormality alarm. Medical staff can then tighten the threaded connection or replace the sealing component 4 to prevent the leakage from expanding. If the patient accidentally pulls the drainage tube 3 violently, and the corrugated tube 34 stretches to its maximum stroke but still cannot buffer, the displacement sensor 35 detects a sudden increase in displacement. The system then activates the limiting component 5 to further clamp the drainage bag and locks the self-locking structure of the threaded connection to prevent the drainage tube 3 from falling off, thus buying time for medical staff to handle the situation. Compared with existing drainage tube devices, this system provides a more efficient solution.This invention improves the overall practicality of drainage tube devices through its design.

[0031] 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. A surgical drainage tube device with automatic metering and remote alarm functions, comprising a connecting case main body (1), characterized in that: The top of the connecting shell body (1) is fixedly connected with a guide cylinder (2), the upper side of the guide cylinder (2) is provided with a drainage tube (3), the upper and lower ends of the guide cylinder (2) are provided with sealing assemblies (4), the inside of the connecting shell body (1) and the outside of the guide cylinder (2) are provided with limiting assemblies (5), the inside of the drainage tube (3) is provided with a guide assembly (6), and the outside of the drainage tube (3) is fixedly connected with a cleaning tube (7). The sealing assembly (4) is used for increasing the sealing performance of the drainage bag or the drainage tube (3) and the guide cylinder (2), the sealing assembly (4) comprises a connecting sleeve (8) fixedly connected to the top of the guide cylinder (2), first sealing rings (9) are fixedly connected to the upper and lower ends in the connecting sleeve (8), a second sealing ring (10) is slidably connected to the middle of the connecting sleeve (8), and connecting rings (11) are fixedly connected to the upper and lower ends in the second sealing ring (10). The limiting assembly (5) is used for limiting the drainage bag in the inside of the connecting shell body (1), the limiting assembly (5) comprises two groups of connecting frames (12) rotatably connected to the inside of the connecting shell body (1) and located outside the guide cylinder (2), rotating frames (13) are fixedly connected to the inner sides of the connecting frames (12), and clamping rings (14) are fixedly connected to the bottoms of the rotating frames (13). The guide assembly (6) is used for guiding the liquid introduced into the inside of the drainage tube (3).

2. A surgical drainage tube device with automatic metering and remote alarm function according to claim 1, characterized in that: The inside of the connecting ring (11) is provided with a deformation groove (15), a plurality of damping springs (16) are fixedly connected to one end of each of the two groups of second sealing rings (10) and approach each other, and the damping springs (16) are fixedly connected with the second sealing rings (10).

3. A surgical drainage tube device with automatic metering and remote alarm functions as defined in claim 1, wherein: The outside of the first sealing ring (9) is fixedly connected with a sealing ring (17), and the sealing ring (17) is fixedly connected with the connecting sleeve (8).

4. The surgical drainage device with automatic metering and remote alarm functionality of claim 1, wherein: The top of the guide cylinder (2) and the top of the connecting sleeve (8) are fixedly connected with a fixing sleeve (18), the inside of the fixing sleeve (18) is provided with a threaded groove (19), the bottom of the drainage tube (3) is fixedly connected with a connecting pipe, the connecting pipe is inserted into the inside of the connecting sleeve (8), and the drainage tube (3) is screwed with the threaded groove (19).

5. The surgical drain device with automatic metering and remote alarm functionality of claim 1, wherein: The bottom end in the inside of the connecting shell body (1) is fixedly connected with a weighing sensor (20), and the top end in the inside of the connecting shell body (1) and located outside the guide cylinder (2) is fixedly connected with a flowmeter (21).

6. A surgical drainage tube device with automatic metering and remote alarm functions as defined in claim 1, wherein: Two groups of connecting frames (12) are provided with two groups of connecting frames (22), the connecting frames (22) are slidably connected with moving rods (23), and the two groups of connecting frames (12) are rotatably connected with the connecting frames (22) and the moving rods (23) respectively.

7. A surgical drainage tube device with automatic metering and remote alarm functionality according to claim 6, characterized in that: The top of the moving rod (23) is fixedly connected with a limiting rod (24), the outside of the connecting frame (22) is provided with a fixing groove (25), the outside of the moving rod (23) is fixedly connected with a compression spring (26), and the compression spring (26) is fixedly connected with the connecting frame (22).

8. The surgical drain device with automatic metering and remote alarm functionality of claim 1, wherein: The guide assembly (6) comprises a connecting cylinder (27) fixedly connected to the outside of the drainage tube (3), the inside of the connecting cylinder (27) is fixedly connected with a fixed ring (28), the outside of the fixed ring (28) is fixedly connected with an elastic sheet (29), the end, away from the fixed ring (28), of the elastic sheet (29) is fixedly connected with a closing block (30), and the inside of the connecting cylinder (27) and the end, away from the fixed ring (28), are slidably connected with a moving cylinder (31).

9. A surgical drainage tube device with automatic metering and remote alarm functionality according to claim 8, characterized in that: Multiple sets of the elastic sheets (29) are in contact with each other and designed as a conical structure, multiple sets of the closing blocks (30) are in contact with each other and designed as a circular structure, the outside of the moving cylinder (31) is fixedly connected with multiple sets of elastic limiting blocks (32), multiple sets of the elastic limiting blocks (32) are distributed at equal intervals on the outside of the moving cylinder (31), the inside of the elastic sheet (29) is provided with a limiting groove (33), the inside structure of the limiting groove (33) is designed in correspondence with the outside structure of the elastic limiting block (32), and the elastic sheet (29) is limitingly connected with the elastic limiting block (32) through the limiting groove (33).

10. The surgical drainage device with automatic metering and remote alarm functionality of claim 1, wherein: The bottom of the drainage tube (3) is fixedly connected with a bellows (34), and the outside of the bellows (34) is fixedly connected with a displacement sensor (35).

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