Special pleural effusions require closed drainage tubes and methods for clearing closed pleural effusions.

Abstract

This invention provides a special closed drainage tube for pleural effusion and a method for clearing closed pleural drainage. The special closed drainage tube for pleural effusion includes a drainage tube, an auxiliary connecting block, a magnetic cleaning strip, and an iron ring. The drainage tube can be connected to both internal and external drainage systems. The auxiliary connecting block has a compensation channel that communicates with the drainage tube, and the compensation channel and the drainage tube together form a drainage channel, providing a path for effusion drainage. The auxiliary connecting block also has a storage space that communicates with the compensation channel. The magnetic cleaning strip is placed in the storage space. The iron ring can be fitted onto the drainage tube and the auxiliary connecting block. When clearing the drainage channel, the iron ring can move the magnetic cleaning strip from the storage space into the drainage channel, and the magnetic cleaning strip can clean the inner wall of the drainage channel. The special closed drainage tube for pleural effusion provided by this invention achieves thorough scraping of effusion adhering to the inner wall of the drainage tube under closed conditions, effectively prolonging the patency period of the drainage tube and reducing the recurrence rate of blockage.

Description

Technical Field

[0001] This invention belongs to the technical field of thoracic drainage tools, specifically relating to a special closed drainage tube for pleural effusion and a method for closed thoracic drainage. Background Technology

[0002] Thoracic drainage is a key technique used in thoracic surgery, respiratory medicine, and emergency medicine to treat abnormal pleural effusions (purulent, chylous, or hemorrhagic effusions), pneumothorax, or postoperative residual pleural cavity. Its core principle is to establish a closed pathway between the pleural cavity and an external drainage system (such as a drainage bottle) through a drainage tube to drain the accumulated fluid. In other words, thoracic drainage uses a drainage tube and an external drainage system in conjunction; once positive pressure is created within the patient's pleural cavity, the effusion is drained through the drainage tube.

[0003] In existing technologies, after pleural effusion is drained through a drainage tube, due to the small diameter of the tube, some fluid remains in the tube after the drainage stops due to the lack of positive pressure (passive drainage). Because of the low external temperature, this fluid aggregates in the tube, increasing its viscosity and causing blockage, especially in cases where the fluid itself is highly viscous, such as chylothorax or empyema. To address this, a three-way valve is typically installed at the end of the drainage tube closest to the patient. Two ports of the valve form the main channel for fluid flow, while the other port is used to inject saline solution after drainage (when one end of the main channel is disconnected by a clamp). The positive pressure of the saline solution is used for flushing or backflushing, or a flexible drainage device can be inserted. Both of these methods disrupt the closed system of the drainage tube, making it susceptible to air ingress and infection, and also result in significant waste of saline solution. In addition, the two methods mentioned above cannot guarantee the removal of stubborn layers adhering to the pipe wall, resulting in poor unblocking effect in actual use; the stubborn layer serves as the substrate for subsequent fluid accumulation and will also shorten the blockage cycle. Summary of the Invention

[0004] This invention provides a special closed drainage tube for pleural effusion and a method for closed pleural drainage, which aims to solve the problem of poor practicality of existing pleural drainage methods due to their inability to achieve closed drainage and poor delivery effect.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a special closed drainage tube for pleural effusion, comprising:

[0006] Drainage tubes are used to connect to the patient's internal and external drainage systems, respectively.

[0007] An auxiliary connecting block is disposed at the end of the drainage tube near the patient; the auxiliary connecting block has a compensation channel communicating with the drainage tube, the compensation channel and the drainage tube together forming a drainage channel; and the auxiliary connecting block has a storage space that can communicate with the compensation channel;

[0008] A magnetic cleaning strip is provided in the storage space;

[0009] An iron ring can be fitted onto the drainage tube and the auxiliary connecting block;

[0010] The magnetic cleaning strip is pulled to the drainage channel by the attraction between itself and the iron ring, and moves in a spiral or reciprocating motion to clean the inner wall of the drainage channel.

[0011] In one possible implementation, the magnetic cleaning strip includes:

[0012] Cylindrical magnetic core, cylindrical external structure;

[0013] A rubber sleeve is fitted over the outside of the cylindrical magnetic core; multiple protruding strips are spaced around the outer wall of the rubber sleeve.

[0014] In one possible implementation, the auxiliary connectivity block includes:

[0015] The body has a first through hole and a second through hole, the first through hole and the second through hole are arranged parallel to each other and spaced apart, and a communicating space is provided between the first through hole and the second through hole; the first through hole is the compensation channel.

[0016] The first sealing element is detachably connected to one end of the second through hole;

[0017] The second sealing element is detachably connected to the other end of the second through hole; one end of the second sealing element extends into the second through hole, and the extended end of the second sealing element has an opening groove that can communicate with the communicating space; the opening groove is the storage space.

[0018] In one possible implementation, the first sealing member is provided with an injection hole for the second through hole, and a one-way valve is provided in the injection hole; the extended end of the second sealing member is provided with a through hole, which connects the second through hole and the opening groove respectively.

[0019] The special closed drainage tube for pleural effusion also includes a reservoir for storing physiological saline, which is connected to the injection port via a tubing.

[0020] In one possible implementation, the second sealing element includes:

[0021] Rotate the cap;

[0022] A rotating cylinder extends into the second through hole and is rotatably connected to the second through hole on the same axis; the opening groove is provided on the rotating cylinder, and the opening of the opening groove is located on the side wall of the rotating cylinder;

[0023] Two annular sealing rings are provided, and the two annular sealing rings are respectively located on both sides of the communicating space along the axis of the rotating cylinder, and are used to seal the gap between the rotating cylinder and the second through hole;

[0024] The rotating cylinder rotates under the influence of the rotating cap, so as to connect the opening slot with the communicating space, or disconnect the opening from the communicating space.

[0025] In one possible implementation, the drainage tube includes:

[0026] An upstream tube is connected at one end to the patient's body; the other end of the upstream tube is connected to the auxiliary connecting block and is also connected to the compensation channel.

[0027] The downstream tube is connected at one end to the external drainage system; the other end of the downstream tube is connected to the auxiliary connecting block and is connected to the compensation channel.

[0028] In one possible implementation, the iron ring includes:

[0029] There are two semi-rings; each semi-ring has two mating end faces;

[0030] A connecting shaft is rotatably connected to two of the two semi-rings at both ends, and the axis of the connecting shaft is perpendicular to the mating end face;

[0031] The two semi-rings rotate relative to each other and merge to form a ring structure that is fitted onto the drainage tube.

[0032] This invention provides a special closed drainage tube for pleural effusion. Compared with existing technologies, the drainage tube and the compensation channel of the auxiliary connecting block together form a complete drainage channel, ensuring unobstructed flow of effusion during routine drainage. Simultaneously, the storage space of the auxiliary connecting block provides an independent and sealed placement location for the magnetic cleaning strip, preventing it from affecting effusion flow when not in use and ensuring the airtightness of the drainage system. Driven by the magnetic field of the iron ring, the magnetic cleaning strip can precisely enter the drainage channel, allowing cleaning operations to begin without disassembling the drainage tube. The entire process maintains a closed state of the drainage system, effectively preventing the risk of infection from external air entering, and enabling unblocking in a closed environment. The spiral movement of the magnetic cleaning strip driven by the iron ring ensures uniform contact between the cleaning strip and every area of ​​the drainage tube's inner wall, eliminating cleaning dead zones. The reciprocating movement at stubborn layers enhances the cleaning effect through repeated scraping, effectively removing both adhering flowing effusion and stubborn deposits. This magnetic field-driven physical scraping method eliminates the need for high-pressure flushing with large amounts of saline solution, reducing saline waste and directly targeting the deposits on the tube wall. Compared to traditional methods, it cleans more thoroughly, preventing stubborn residues from becoming a base for subsequent fluid buildup. This significantly improves the cleaning effect, enabling thorough removal of fluid buildup on the inner wall of the drainage tube under closed conditions. It effectively extends the unobstructed lifespan of the drainage tube and reduces the recurrence rate of blockage.

[0033] This invention also provides a method for closed pleural drainage, using the aforementioned special closed drainage tube for pleural effusion. This method for closed pleural drainage includes the following steps:

[0034] Use a stop-flow clamp to hold the end of the drainage tube closest to the patient to create a blockage;

[0035] The iron ring is fitted onto the drainage tube;

[0036] Connect the storage space to the compensation channel;

[0037] Move the iron ring to the outside of the auxiliary connecting block, and through the contact between the partial inner wall of the iron ring and the auxiliary connecting block, bring the magnetic cleaning strip in the storage space into the compensation channel and into the drainage tube; make the iron ring move in a circular motion, and keep the partial inner wall of the iron ring in contact with the outer wall of the drainage tube; then move the iron ring in a spiral along the extension direction of the drainage tube, so as to drive the magnetic cleaning strip, which is closely attached to the inner wall of the drainage tube, to move in a spiral within the drainage tube to scrape off the accumulated liquid adhering to the inner wall of the drainage tube; or move the iron ring back and forth at the location of the stubborn layer, so that the magnetic cleaning strip scrapes off the stubborn layer back and forth;

[0038] After cleaning is completed, the magnetic cleaning strip is moved back to the storage space by the iron ring, and then the connection between the storage space and the compensation channel is disconnected.

[0039] In one possible implementation, during the cleaning process of the drainage tube by the magnetic cleaning strip, the liquid storage container is squeezed, allowing saline solution to enter the drainage channel through the injection hole on the auxiliary connecting block, thereby flushing the drainage channel.

[0040] The closed thoracic drainage method provided in this implementation offers advantages over existing technologies. The clamping operation of the stop clip is simple and efficient, enabling rapid temporary closure of the drainage tube. This ensures patient safety while providing a stable environment for cleaning, avoiding the risk of fluid backflow during cleaning and ensuring the entire cleaning process is conducted under closed conditions. The specially designed closed thoracic drainage tube eliminates the need for complex tools in its ring placement, allowing medical staff to complete the process quickly, reducing operational difficulty and improving clinical applicability. The spiral movement of the magnetic cleaning strip driven by the iron ring ensures uniform scraping against every part of the drainage tube's inner wall, eliminating cleaning dead zones and ensuring thorough removal of fluid adhering to the tube wall. The reciprocating movement at stubborn layers enhances the cleaning effect through repeated friction, effectively peeling off even stubborn layers with long-standing deposition and strong adhesion. The entire cleaning process does not require disassembly of the drainage tube, preserving the airtightness of the drainage system, and reduces the need for large amounts of saline, minimizing resource waste. Compared to traditional methods, this method cleans more thoroughly, avoiding the problem of stubborn residue becoming a base for subsequent fluid accumulation. It significantly improves the cleaning effect, achieving full scraping of fluid adhering to the inner wall of the drainage tube under closed conditions, effectively extending the unobstructed service life of the drainage tube, and reducing the recurrence rate of blockage. Attached Figure Description

[0041] Figure 1 A schematic diagram of the structure of a special closed drainage tube for pleural effusion provided in an embodiment of the present invention (F represents the direction in which the fluid storage container can be squeezed);

[0042] Figure 2 A schematic diagram of the auxiliary connecting block of a special closed drainage tube for pleural effusion provided in an embodiment of the present invention;

[0043] Figure 3 for Figure 2 A schematic cross-sectional view of the auxiliary connecting block of the special closed drainage tube for pleural effusion provided in the embodiment. Figure 1 ;

[0044] Figure 4 for Figure 2 A schematic cross-sectional view of the auxiliary connecting block of the special closed drainage tube for pleural effusion provided in the embodiment. Figure 2 ;

[0045] Figure 5 A schematic diagram of the structure of the second sealing element of the special closed drainage tube for pleural effusion provided in an embodiment of the present invention;

[0046] Figure 6 A schematic diagram of the magnetic cleaning strip of a special closed drainage tube for pleural effusion provided in an embodiment of the present invention;

[0047] Figure 7 A schematic diagram of the iron ring structure of a special closed drainage tube for pleural effusion provided in an embodiment of the present invention;

[0048] Figure 8 This is a cross-sectional view of the iron ring and magnetic cleaning strip working together during the use of the special closed drainage tube for pleural effusion provided in this embodiment of the invention (the central circumference X is the trajectory of the iron ring, and the central circumference Y is the trajectory of the magnetic cleaning strip).

[0049] Figure 9 A flowchart of a closed thoracic drainage and unblocking method provided in an embodiment of the present invention.

[0050] Explanation of reference numerals in the attached figures:

[0051] 10. Drainage tube; 11. Upstream tube; 12. Downstream tube;

[0052] 20. Auxiliary connecting block; 21. Body; 211. First through hole; 212. Second through hole; 213. Connecting space; 22. First sealing element; 221. Injection hole; 222. One-way valve disc; 23. Second sealing element; 231. Rotating cap; 232. Rotating cylinder; 233. Annular sealing ring; 234. Opening groove; 235. Through hole;

[0053] 30. Magnetic cleaning strip; 31. Columnar magnetic core; 32. Rubber sleeve; 33. Protruding strip;

[0054] 40. Iron ring; 41. Half ring; 42. Connecting shaft;

[0055] 50. Liquid storage container;

[0056] 60. Drainage system. Detailed Implementation

[0057] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0058] Please refer to the following: Figures 1 to 4The present invention will now describe a special closed drainage tube for pleural effusion. This special closed drainage tube for pleural effusion includes a drainage tube 10, an auxiliary connecting block 20, a magnetic cleaning strip 30, and an iron ring 40. The drainage tube 10 can be connected to both an internal and external drainage system 60. The auxiliary connecting block 20 is located at the end of the drainage tube 10 near the patient. The auxiliary connecting block 20 has a compensation channel communicating with the drainage tube 10, which together with the drainage tube 10 forms a drainage channel, providing a path for the drainage of effusion. The auxiliary connecting block 20 also has a storage space communicating with the compensation channel. The magnetic cleaning strip 30 is located in the storage space. The iron ring 40 can be fitted onto the drainage tube 10 and the auxiliary connecting block 20. When clearing the drainage channel, the iron ring 40 can move the magnetic cleaning strip 30 from the storage space to the drainage channel and move the magnetic cleaning strip 30 in a spiral motion in the drainage channel; or move the magnetic cleaning strip 30 back and forth at the location of the stubborn layer to clean the inner wall of the drainage channel.

[0059] In normal drainage mode, the magnetic cleaning strip 30 is placed in the storage space of the auxiliary connecting block 20. At this time, the storage space can be disconnected from the compensation channel. The accumulated fluid is discharged through the drainage channel formed by the drainage tube 10 and the compensation channel, and the magnetic cleaning strip 30 does not affect the normal drainage function. When drainage stops, or when the drainage tube 10 becomes blocked or has accumulated fluid on its inner wall, the unblocking operation begins. An iron ring 40 is fitted onto the drainage tube 10 and the auxiliary connecting block 20. The magnetic field generated by the iron ring 40 attracts the magnetic cleaning strip 30 in the storage space, moving the magnetic cleaning strip 30 from the storage space to the compensation channel, and then into the entire drainage channel.

[0060] By manipulating the iron ring 40 to move spirally along the extension direction of the drainage tube 10, or to move back and forth at the location of the stubborn layer, the magnetic force of the iron ring 40 continuously acts on the magnetic cleaning strip 30, causing the magnetic cleaning strip 30 to move synchronously. During the movement, the magnetic cleaning strip 30 comes into close contact with the inner wall of the drainage channel, and through the scraping action generated by the physical contact, it peels off the accumulated liquid and stubborn layer adhering to the tube wall.

[0061] The special closed drainage tube for pleural effusion provided in this embodiment, compared with the prior art, forms a complete drainage channel together with the drainage tube 10 and the compensation channel of the auxiliary connecting block 20, ensuring unobstructed flow of effusion during routine drainage. Simultaneously, the storage space of the auxiliary connecting block 20 provides an independent and sealed placement position for the magnetic cleaning strip 30, preventing the cleaning strip from affecting effusion flow when not in operation and ensuring the airtightness of the drainage system 60. Driven by the magnetic field of the iron ring 40, the magnetic cleaning strip 30 can accurately enter the drainage channel, allowing cleaning operations to be initiated without disassembling the drainage tube 10. The drainage system 60 remains closed throughout the process, effectively preventing the risk of infection caused by external air entering, and enabling drainage in a closed environment. The spiral movement of the magnetic cleaning strip 30 driven by the iron ring 40 ensures uniform contact between the cleaning strip and every area of ​​the inner wall of the drainage tube 10, eliminating any blind spots. The reciprocating movement at stubborn layers enhances the cleaning effect through repeated scraping, effectively removing both adhering fluid and stubborn deposits. This magnetically driven physical scraping method eliminates the need for high-pressure flushing with large amounts of saline solution, reducing saline waste and directly targeting the deposits on the tube wall. Compared to traditional methods, it provides a more thorough cleaning, preventing stubborn residue from becoming a base for subsequent fluid buildup. This significantly improves the cleaning effect, achieving complete removal of fluid adhering to the inner wall of the drainage tube 10 under closed conditions, effectively extending the unobstructed service life of the drainage tube 10 and reducing the recurrence rate of blockages.

[0062] In some embodiments, the magnetic cleaning strip 30 may be employed as follows: Figure 6 The structure shown. See also Figure 6 The magnetic cleaning strip 30 includes a cylindrical magnetic core 31 and a rubber sleeve 32. The cylindrical magnetic core 31 has a cylindrical shape. The rubber sleeve 32 is fitted onto the outside of the cylindrical magnetic core 31. Multiple protruding strips 33 are spaced around the outer wall of the rubber sleeve 32.

[0063] The cylindrical magnetic core 31 ensures a responsive drive to the iron ring 40, guaranteeing the stability of magnetic force transmission and enabling the iron ring 40 to stably move the cleaning strip, ensuring smooth cleaning operations. The cylindrical structure, with its inherent length, increases the scraping area during cleaning. The flexible material of the rubber sleeve 32 provides excellent elasticity and flexibility, preventing the magnetic cleaning strip 30 from scratching the inner wall of the drainage tube 10 and extending its service life. Furthermore, the rubber sleeve 32 acts as a buffer, reducing hard contact between the cleaning strip and the tube wall, protecting the tube wall from damage. Additionally, the multiple protruding strips 33 on the outer wall of the rubber sleeve 32 increase the contact pressure between the cleaning strip and the inner wall of the drainage tube 10, resulting in a more effective scraping.

[0064] In this embodiment, the diameter of the entire magnetic cleaning strip 30 can be set to half the diameter of the drainage channel to ensure that it can move flexibly in the drainage channel.

[0065] Once activated, the magnetic cleaning strip 30 moves in a spiral motion, achieving comprehensive scraping and coverage of the pipe wall. Its reciprocating motion further enhances the cleaning effect on stubborn layers through repeated friction. The entire magnetic cleaning strip 30 moves within the closed drainage channel without compromising its airtightness. The protruding strip 33 can penetrate deep into tiny depressions in the pipe wall, removing hidden liquid residue and preventing the reformation of stubborn layers. This solves the problem of difficult-to-remove accumulated liquid from the inner wall of the drainage channel, achieving highly efficient cleaning under closed conditions.

[0066] Additionally, regarding columnar magnetism, it could be a rubidium magnet.

[0067] In some embodiments, the auxiliary connecting block 20 described above can be as follows: Figure 3 and Figure 4 The structure shown. See also Figure 3 and Figure 4 The auxiliary connecting block 20 includes a body 21, a first sealing member 22, and a second sealing member 23. The body 21 has a first through hole 211 and a second through hole 212, which are parallel and spaced apart. A connecting space 213 is provided between the first through hole 211 and the second through hole 212. The first through hole 211 serves as a compensation channel. One end of the first sealing member 22 is detachably connected to the second through hole 212. The other end of the second sealing member 23 is detachably connected to the second through hole 212. One end of the second sealing member 23 extends into the second through hole 212, and the extended end of the second sealing member 23 has an opening groove 234 that communicates with the connecting space 213. The opening groove 234 serves as a storage space.

[0068] In normal drainage mode, the first through hole 211 and the second through hole 212 are arranged side by side, with the two ends of the second through hole 212 blocked by the first sealing member 22 and the second sealing member 23, respectively. The magnetic cleaning strip 30 is placed in the opening groove 234 at the end of the second sealing member 23, detached from the first through hole 211, i.e., detached from the drainage channel, thus avoiding blockage of normal drainage of accumulated fluid. When cleaning is required, the opening groove 234 on the second sealing member 23 is connected to the first through hole 211 through the communicating space 213 of the body 21. At this time, the iron ring 40 sleeved on the outside attracts the magnetic cleaning strip 30 in the opening groove 234, driving it through the communicating space 213 into the first through hole 211, and then into the drainage channel formed by the drainage tube 10 to begin the cleaning operation. After cleaning is completed, the magnetic cleaning strip 30 can be brought back to the opening groove 234 by the iron ring 40.

[0069] In the non-drainage state, the connection between the opening slot 234 and the first through hole 211 can be disconnected.

[0070] The first through hole 211 of the main body 21 serves as a compensation channel, connecting with the drainage tube 10 to ensure the unobstructed flow of the drainage channel. The parallel and spaced first through holes 211 and second through holes 212 prevent mutual interference between them. The connecting space 213 provides a transition path for the movement of the magnetic cleaning strip 30, ensuring the connection between the storage space and the drainage channel. The detachable connection design of the first sealing member 22 and the second sealing member 23 facilitates direct disassembly for maintenance when necessary, and prevents liquid leakage or air ingress, ensuring the sealing of the entire drainage system 60. The opening groove 234 at the end of the second sealing member 23 serves as a storage space, and the opening groove 234 can optionally connect with the first through hole 211, which can stably fix the magnetic cleaning strip 30 and prevent it from shifting when not in operation. The corresponding arrangement of the opening groove 234 and the connecting space 213 allows the magnetic cleaning strip 30 to smoothly enter the drainage channel.

[0071] The entire structure of the auxiliary connecting block 20 allows the storage, retrieval, and recycling of the magnetic cleaning strip 30 to be completed within a closed space, effectively avoiding the risk of infection. Through this structure, the magnetic cleaning strip 30 can precisely enter the drainage channel to perform cleaning operations. Combined with the driving action of the iron ring 40, it achieves thorough scraping of the accumulated liquid adhering to the pipe wall, resulting in excellent cleaning performance.

[0072] In some embodiments, the first sealing element 22 described above can be adopted as follows: Figure 1 , Figure 3 and Figure 4 The structure shown. See also Figure 1 , Figure 3 and Figure 4 The first sealing member 22 is provided with an injection hole 221 of the second through hole 212, and a one-way valve disc 222 is provided in the injection hole 221. The extended end of the second sealing member 23 is provided with a through hole 235, which connects the second through hole 212 and the opening groove 234 respectively.

[0073] The special closed drainage tube for pleural effusion also includes a reservoir 50 for storing physiological saline, which is connected to the injection port 221 via a tubing.

[0074] In this embodiment, the liquid storage container 50 can be a syringe or a polyethylene plastic bottle, which can ensure that positive pressure can be formed by squeezing during the rinsing process to force the saline solution into the drainage channel.

[0075] During cleaning, the magnetic cleaning strip 30, driven by the iron ring 40, scrapes the inner wall of the drainage channel. This squeezes the reservoir 50, pressurizing the saline solution within and opening the one-way valve 222 in the injection port 221. The saline solution then enters the second through-hole 212, passes through the second sealing member 23 into the opening slot 234 (storage space), and finally flows into the drainage channel formed by the compensation channel and the drainage tube 10. The saline solution, working in conjunction with the scraping action of the magnetic cleaning strip 30 within the drainage channel, flushes away the scraped-off fluid and stubborn layers, carrying them towards the external drainage system 60. Simultaneously, it moistens the inner wall of the drainage channel, reducing friction between the magnetic cleaning strip 30 and the tube wall, and dissolves some of the viscous fluid, further enhancing the scraping effect. After cleaning, stop squeezing the storage container 50. The one-way valve 222 will reset and close under its own elasticity to prevent the liquid in the second through hole 212 from flowing back into the storage container 50, thus ensuring the cleanliness of the saline solution.

[0076] The injection hole 221 on the first sealing member 22 provides a dedicated channel for the injection of physiological saline. The one-way valve 222 allows for smooth injection of physiological saline while effectively preventing the outflow of accumulated fluid in the drainage channel. The through hole 235 at the extended end of the second sealing member 23 enables fluid communication between the second through hole 212 and the opening groove 234, allowing the injected physiological saline to pass through the opening groove 234 before entering the drainage channel, increasing the flushing range and ensuring the flushing effect. Based on the physical scraping of the magnetic cleaning strip 30, the flushing of physiological saline plays a synergistic role. It not only removes the scraped-off deposits in time, preventing them from re-adhering to the tube wall, but also dissolves some of the viscous fluid, reducing the adhesion of the stubborn layer, making the scraping of the magnetic cleaning strip 30 more thorough. Moreover, the injection of physiological saline does not require breaking the closed system, effectively ensuring safety and practicality.

[0077] In some embodiments, the second sealing element 23 described above can be as follows: Figures 3 to 5 The structure shown. See also Figures 3 to 5 The second sealing element 23 includes a rotating cap 231, a rotating cylinder 232, and an annular sealing ring 233. The rotating cylinder 232 extends into the second through hole 212 and is coaxially rotatably connected to the second through hole 212. An opening groove 234 is provided on the rotating cylinder 232, and the opening of the opening groove 234 is located on the side wall of the rotating cylinder 232. Two annular sealing rings 233 are provided, and the two annular sealing rings 233 are located on both sides of the communicating space 213 along the axis of the rotating cylinder 232, which can seal the gap between the rotating cylinder 232 and the second through hole 212.

[0078] Driven by the rotating cap 231, the rotating cylinder 232 rotates to make the opening slot 234 connect with the connecting space 213, or disconnect the connection between the opening and the connecting space 213.

[0079] In normal drainage mode, rotating the cylinder 232 by rotating the cap 231 causes the opening of the slot 234 on the rotating cylinder 232 to be misaligned with the communicating space 213 of the body 21. At this time, the slot 234 and the communicating space 213 are disconnected, and the magnetic cleaning strip 30 is sealed in the slot 234, isolated from the drainage channel to prevent it from falling out accidentally. Moreover, the accumulated liquid can be discharged normally through the drainage tube 10 and the compensation channel. When cleaning operation is required, the operator holds the cap 231 and rotates the cylinder 232, causing the slot 234 to rotate synchronously until the opening of the slot 234 is aligned with the communicating space 213. At this time, the slot 234 and the communicating space 213 are connected, and the magnetic cleaning strip 30 stored therein can be driven by the magnetic field of the iron ring 40 to enter the drainage channel composed of the compensation channel and the drainage tube 10 through the communicating space 213. After the cleaning operation is completed, the magnetic cleaning strip 30 is brought back to the opening slot 234, and the rotating cap 231 is rotated again to disconnect the opening slot 234 from the communicating space 213, restoring the normal drainage state. During the rotation of the rotating cylinder 232, the two annular sealing rings 233 always maintain a tight fit with the inner wall of the rotating cylinder 232 and the second through hole 212, blocking the gap between the rotating cylinder 232 and the second through hole 212, preventing liquid leakage or air entry.

[0080] It should be noted that half of the annular sidewall of the rotating cap 231 is covered with color, and the position of this color can be used to determine the orientation of the opening slot 234.

[0081] The rotating cap 231 provides a convenient operating component for the rotation of the rotating cylinder 232. Operators can control the opening and closing of the slot 234 and the connecting space 213 without the need for additional tools, making operation simple. The coaxial rotation of the rotating cylinder 232 and the second through hole 212 ensures precise positioning of the slot 234 during rotation, accurately aligning or offsetting it with the connecting space 213, ensuring smooth entry and exit of the magnetic cleaning strip 30 into the drainage channel. The slot 234 is located on the side wall of the rotating cylinder 232, and its opening direction can be flexibly adjusted by rotation, achieving controllable communication between the storage space and the drainage channel. In a non-cleaning state, it effectively isolates the magnetic cleaning strip 30, preventing it from affecting the flow of accumulated liquid. Two annular sealing rings 233 are located on both sides of the connecting space 213, forming a double sealing structure. No matter what rotation position the rotating cylinder 232 is in, it can effectively seal the gap between the rotating cylinder 232 and the second through hole 212, ensuring the sealing of the entire drainage system 60, preventing liquid leakage and external air from entering, and avoiding the risk of infection.

[0082] The structure of the second sealing component 23 facilitates the installation of the magnetic cleaning strip 30, and also ensures that the magnetic cleaning strip 30 can be replenished or replaced if it malfunctions or falls off accidentally during the cleaning process.

[0083] In another embodiment, the rotating cylinder 232 has an annular groove at its end near the rotating cap 231, and two parallel, spaced-apart insertion holes on the body 21. Both insertion holes pass through the second through hole 212 and are adapted to fit the annular groove. After the rotating cylinder 232 is installed, a limiting rod can be inserted into the insertion hole to limit the axial movement of the rotating cylinder 232.

[0084] In some embodiments, the drainage tube 10 may be adopted as follows: Figure 1 The structure shown. See also Figure 1 The drainage tube 10 includes an upstream tube 11 and a downstream tube 12. One end of the upstream tube 11 is connected to the patient's body. The other end of the upstream tube 11 is connected to the auxiliary connecting block 20 and communicates with the compensation channel. One end of the downstream tube 12 is connected to the external drainage system 60. The other end of the downstream tube 12 is connected to the auxiliary connecting block 20 and communicates with the compensation channel.

[0085] The upstream tube 11 and downstream tube 12 are respectively aligned and connected to the compensation channel of the auxiliary connecting block 20, ensuring the continuity of the drainage channel. Specifically, they can be integrally connected to the auxiliary connecting block 20 or detachably connected (such as by a sleeve insertion method), providing a stable guarantee for routine drainage. This segmented structure allows the auxiliary connecting block 20 to be stably fixed at the end of the drainage tube 10 near the patient, and any fluid accumulation on the inner wall of either the upstream tube 11 or the downstream tube 12 can be thoroughly scraped away by the magnetic cleaning strip 30.

[0086] It should be noted that when one end of the upstream tube 11 is inserted into the human body, the accumulated fluid will aggregate significantly within the drainage channel due to the decrease in temperature after it flows out of the body. This increases the probability of blockage in the downstream tube 12, and may also cause blockage in the upstream tube 11. Therefore, when cleaning the downstream tube 12, the portion of the upstream tube 11 protruding from the body must be cut off. This can be done by blocking the upstream tube 11 with a flow-stopping clamp. At this point, the magnetic cleaning strip 30 can be moved upwards to a position before the flow-stopping clamp to clean and unclog the inner wall of the drainage channel behind the clamp.

[0087] When the upstream tube 11 becomes blocked at the point where it enters the body, a flow stop clamp can be used to block the end of the downstream tube 12 near the auxiliary connecting block 20 (before blocking, the magnetic cleaning strip 30 can be moved into the downstream tube 12). Then, a certain amount of saline solution can be injected into the auxiliary connecting block 20 through the storage container 50. The saline solution flows back into the patient's body through the upstream tube 11 to clear the blockage of the upstream tube 11 in the patient's body.

[0088] Regarding the storage container 50, an intelligent pressurization module can be adapted to be installed. For example, a pressurization pump and related detection and control can be activated during the process of back flushing or forward flushing to inject a certain amount of physiological saline into the drainage channel, further ensuring the conservation of physiological saline and facilitating the control of the quantity.

[0089] In some embodiments, the iron ring 40 may be as follows: Figure 7 and Figure 8 The structure shown. See also Figure 7 and Figure 8 The iron ring 40 includes two half-rings 41 and a connecting shaft 42. Each half-ring 41 has two mating end faces. The two ends of the connecting shaft 42 are rotatably connected to the two half-rings 41 respectively, and the axis of the connecting shaft 42 is perpendicular to the mating end faces. The two half-rings 41 rotate relative to each other and mate to form an annular structure that is fitted onto the drainage tube 10.

[0090] When installing the iron ring 40, rotate the two semi-rings 41 to both sides around the connecting shaft 42 to open the iron ring 40. Then, place the drainage tube 10 and the auxiliary connecting block 20 into the semi-circular hole of one of the semi-rings 41. Subsequently, rotate the two semi-rings 41 in the opposite direction to make the mating end faces of the two semi-rings 41 fit tightly together, forming a complete annular structure that fits over the drainage tube 10 and the auxiliary connecting block 20. The inner diameter of the iron ring 40 must be larger than the outer diameter of the drainage tube 10 and the width of the auxiliary connecting block 20 to ensure that when the iron ring 40 contacts the two, only a portion of its inner wall abuts against a portion of the outer wall of the drainage tube 10 or the auxiliary connecting block 20, thereby facilitating the movement control of the magnetic cleaning strip 30.

[0091] Based on the same inventive concept, this application also provides a method for closed thoracic drainage, which can be found in [reference needed]. Figures 1 to 9 This closed pleural drainage method uses the aforementioned special closed drainage tube for pleural effusion, and includes the following steps:

[0092] S100: Use a stop clamp to clamp the end of the drainage tube 10 near the patient to form a blockage.

[0093] S200: Fit the iron ring 40 onto the drainage tube 10.

[0094] S300: Connects the storage space to the compensation channel.

[0095] S400: Move the iron ring 40 to the outside of the auxiliary connecting block 20. Through the contact between the partial inner wall of the iron ring 40 and the auxiliary connecting block 20, bring the magnetic cleaning strip 30 in the storage space into the compensation channel and into the drainage tube 10. Keep the partial inner wall of the iron ring 40 in contact with the outer wall of the drainage tube 10. Then, move the iron ring 40 in a spiral motion along the extension direction of the drainage tube 10, so that the magnetic cleaning strip 30, which is closely attached to the inner wall of the drainage tube 10, moves in a spiral motion within the drainage tube 10, thereby scraping away the accumulated liquid adhering to the inner wall of the drainage tube 10. Alternatively, the iron ring 40 can be moved back and forth at the location of the stubborn layer to allow the magnetic cleaning strip 30 to repeatedly scrape away the stubborn layer.

[0096] S500: After cleaning is completed, the magnetic cleaning strip 30 is moved back to the storage space by the iron ring 40, and then the connection between the storage space and the compensation channel is disconnected.

[0097] In this embodiment, the purpose of clamping the drain stop clip is to temporarily block the channel of the drainage tube 10 near the patient, preventing the backflow of accumulated fluid into the patient's chest cavity during cleaning and ensuring patient safety. The iron ring 40 is used to install a drive component for controlling the magnetic cleaning strip 30, preparing for its movement. Connecting the storage space to the compensation channel provides a channel for the magnetic cleaning strip 30 to enter the drainage channel, enabling the cleaning strip to switch from its storage state to its working state. After the magnetic cleaning strip 30 enters the drainage tube 10 via the movement of the iron ring 40, its spiral movement allows it to rotate and feed along the tube wall, fully covering all areas of the tube wall. The reciprocating movement repeatedly scrapes areas with concentrated stubborn deposits, physically removing the attached fluid and stubborn deposits. The scraped-off deposits are temporarily stored in the drainage channel. After cleaning, the magnetic cleaning strip 30 can be returned to the storage space via the iron ring 40, and then the drain stop clip can be opened.

[0098] The clamping operation of the flow-stopping clip is simple and efficient, enabling rapid temporary occlusion of the drainage tube 10. While ensuring patient safety, it provides a stable environment for cleaning operations, avoiding the risk of fluid backflow during cleaning and ensuring the entire cleaning process is conducted under closed conditions. The placement of the iron ring 40 requires no complex tools and can be quickly completed by medical staff, reducing operational difficulty and improving clinical applicability. The control of the connection between the storage space and the compensation channel allows for precise entry and exit of the magnetic cleaning strip 30, preventing the cleaning strip from entering the drainage channel when not in use and affecting drainage, while ensuring smooth initiation during cleaning. The spiral movement of the magnetic cleaning strip 30 driven by the iron ring 40 ensures uniform scraping against every part of the inner wall of the drainage tube 10, eliminating cleaning dead zones and ensuring thorough removal of fluid adhering to the tube wall. The reciprocating movement at stubborn layers enhances the cleaning effect through repeated friction, effectively peeling off even stubborn layers with long deposition times and strong adhesion. The entire cleaning process does not require disassembling the drainage tube 10, does not damage the airtightness of the drainage system 60, and does not require the use of large amounts of saline, thus reducing resource waste.

[0099] In some embodiments, see Figure 1 During the cleaning process of the magnetic cleaning strip 30, the liquid storage container 50 is squeezed, so that physiological saline enters the drainage channel through the injection hole 221 on the auxiliary connecting block 20 to flush the drainage channel.

[0100] The combination of saline flushing and the scraping action of the magnetic cleaning strip 30 forms a combined cleaning mode of physical scraping and dissolving solution flushing, significantly improving the cleaning effect compared to a single cleaning method. Simultaneous flushing during the cleaning process removes scraped-off deposits in real time, preventing them from remaining in the drainage channel and reducing the probability of re-adhesion. It also dissolves viscous fluid, reducing the adhesion of stubborn layers, allowing the magnetic cleaning strip 30 to scrape more thoroughly, removing stubborn layers without repeated scraping. A separate flush after cleaning provides a complete finishing cleaning of the drainage channel, removing residual micro-deposits, ensuring clean tube walls, and further extending the patency period of the drainage tube 10. The amount of saline injected can be precisely controlled by the force and time of squeezing the reservoir 50, avoiding waste. This method achieves thorough scraping and flushing of the fluid adhering to the inner wall of the drainage tube 10 under closed conditions, with good cleaning effect, simple operation, and seamless integration with the scraping action of the magnetic cleaning strip 30, without adding extra complex steps, making it suitable for clinical application.

[0101] The closed thoracic drainage and unblocking method provided in this embodiment of the invention works by using a flow-stopping clamp to hold the end of the drainage tube 10 near the patient to block the upstream tube 11. By rotating the two semi-rings 41, the aligned iron ring 40 is fitted onto the drainage tube 10. Then, the second sealing member 23 is rotated to connect the opening groove 234 with the communicating space 213. By moving the iron ring 40, to ensure increased suction, the inner wall of the iron ring 40 can be made to fit tightly against the auxiliary communicating block 20. As the iron ring 40 moves, the magnetic cleaning strip 30 is carried out of the opening groove 234 and into the first through hole 211. Then, by making the iron ring 40 rotate in a circular motion, such as... Figure 8 In the X-trajectory, the inner wall of the iron ring 40 will continuously abut against the outer wall of the drainage tube 10, and the contact point will also form a circular trajectory. The magnetic cleaning strip 30 will adhere tightly to the inner wall of the drainage channel, corresponding to the contact point between the iron ring 40 and the drainage tube 10, and thus the magnetic cleaning strip 30 will also move in a circular motion, such as... Figure 8 The Y-track is observed. The spiral movement of the iron ring 40 ensures that the magnetic cleaning strip 30 fully covers the inner wall of the drainage channel. Furthermore, for stubborn layers, the iron ring 40 drives the magnetic cleaning strip 30 to reciprocate, ensuring thorough cleaning of the stubborn layer. During this process, the saline solution is squeezed through the injection hole 221, the second through hole 212, the through hole 235, the opening groove 234, and the connecting space 213 into the drainage channel to promote dissolution and flushing. After cleaning and unblocking, the iron ring 40 drives the magnetic cleaning strip 30 back into the opening groove 234, and then the second sealing member 23 is rotated to disconnect the connection between the opening groove 234 and the connecting space 213.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A closed drainage tube for special pleural effusion, characterized by, include: Drainage tubes are used to connect to the patient's internal and external drainage systems, respectively. An auxiliary connecting block is provided at the end of the drainage tube near the patient; The auxiliary connecting block has a compensation channel that communicates with the drainage tube, and the compensation channel and the drainage tube together form a drainage channel; and the auxiliary connecting block has a storage space that can communicate with the compensation channel; A magnetic cleaning strip is provided in the storage space; An iron ring can be fitted onto the drainage tube and the auxiliary connecting block; The magnetic cleaning strip is driven to the drainage channel by the attraction between it and the iron ring, and moves in a spiral or reciprocating motion to clean the inner wall of the drainage channel. The auxiliary connecting block includes a body, a first sealing member, and a second sealing member. The body has a first through hole and a second through hole, which are parallel and spaced apart, with a connecting space between them. The first through hole serves as the compensation channel. One end of the first sealing member is detachably connected to the second through hole. The other end of the second sealing member is detachably connected to the second through hole. One end of the second sealing member extends into the second through hole, and the extended end of the second sealing member has an opening groove that communicates with the connecting space. The opening groove serves as the storage space. The second sealing component includes a rotating cap, a rotating cylinder, and an annular sealing ring. The rotating cylinder extends into the second through hole and is rotatably connected to the second through hole on the same axis. An opening groove is provided on the rotating cylinder, and the opening of the opening groove is located on the side wall of the rotating cylinder. Two annular sealing rings are provided, and the two annular sealing rings are located on both sides of the communicating space along the axis of the rotating cylinder, respectively, for sealing the gap between the rotating cylinder and the second through hole. Under the drive of the rotating cap, the rotating cylinder rotates to make the opening groove communicate with the communicating space, or to disconnect the opening from the communicating space.

2. The closed drainage tube for special pleural effusion according to claim 1, wherein The magnetic cleaning strip includes: Cylindrical magnetic core, cylindrical external structure; A rubber sleeve is fitted over the outside of the cylindrical magnetic core; multiple protruding strips are spaced around the outer wall of the rubber sleeve.

3. The closed drainage tube for special pleural effusion according to claim 1, wherein The first sealing member is provided with an injection hole for the second through hole, and a one-way valve is provided in the injection hole; the extended end of the second sealing member is provided with a through hole, which is connected to the second through hole and the opening groove respectively; The special closed drainage tube for pleural effusion also includes a reservoir for storing physiological saline, which is connected to the injection port via a tubing.

4. The closed drainage tube for special pleural effusion according to claim 1, wherein The drainage tube includes: An upstream tube is connected at one end to the patient's body; the other end of the upstream tube is connected to the auxiliary connecting block and is also connected to the compensation channel. The downstream tube is connected at one end to the external drainage system; the other end of the downstream tube is connected to the auxiliary connecting block and is connected to the compensation channel.

5. The closed drainage tube for special pleural effusion according to claim 1, wherein The iron ring includes: There are two semi-rings; each semi-ring has two mating end faces; Connecting shafts, two ends of which are respectively connected with the two half rings in rotation, and the axis of the connecting shaft is arranged perpendicularly to the closing end face; Wherein, the two half rings are closed by relative rotation and form a ring structure which is arranged on the drainage tube in a ring shape.

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