Anti-blocking peritoneal drainage tube with built-in self-cleaning mechanism

Abstract

The invention discloses an anti-blocking peritoneal drainage tube with a built-in self-cleaning mechanism, and belongs to the technical field of medical care. Cleaning action is triggered by manually pressing an external pressing ring, when a second sliding ring moves downwards, a sliding column slides along a track of an inclined groove, a second supporting rail generates circumferential deflection, and the self-cleaning mechanism is arranged on the second sliding ring; the cleaning tentacles scrape impurities such as tissue debris and blood clots attached to the edges of the suction main hole and the suction branch holes and the outer wall of the abdominal cavity drainage inner tube, the multiple elastic frameworks are opened to prevent visceral organ tissues from being sucked into the suction main hole and the suction branch holes, the sliding columns slide to the lowest ends of the inclined grooves and are located at the bottoms of the vertical grooves, and after the pressing rings are loosened, the suction main hole and the suction branch holes can be sucked into the suction main hole and the suction branch holes. The elastic reset force of the elastic skeleton drives the cleaning assembly to reset, a single cleaning cycle is completed, the traditional mode of normal saline flushing, negative pressure suction or drainage tube replacement is abandoned, the purposes of efficient drainage and active blocking prevention are achieved, the blocking rate of a traditional drainage tube and the risk of postoperative complications are greatly reduced, and the whole-process operation is easy and convenient. And external complex power equipment is not needed.

Description

Technical Field

[0001] This invention relates to the field of medical care technology, specifically to an anti-clogging abdominal drainage tube with a built-in self-cleaning mechanism. Background Technology

[0002] Abdominal drainage is a key adjunctive treatment in abdominal surgery. Its core purpose is to drain effusion, hemoptysis, pus, and tissue exudate from the abdominal cavity in a timely manner, thereby reducing the incidence of postoperative complications such as abdominal infection and intestinal adhesions, and ensuring the patient's postoperative recovery. The abdominal drainage tube is the core instrument for achieving this treatment goal, and its drainage efficiency and patency directly determine the treatment effect. At present, the abdominal drainage tubes widely used in clinical practice are mostly single-lumen or double-lumen silicone tubes with several drainage holes on the side wall of the tube. Fluid drainage is achieved by relying on the gravity of the effusion in the abdominal cavity or the pressure difference formed by the external negative pressure device. However, in actual clinical application, traditional drainage tubes have significant blockage problems.

[0003] Necrotic tissue debris, fibrin clots, and blood clots in the abdominal cavity can easily enter the drainage hole with the drainage fluid and deposit inside the lumen, especially at the edge of the drainage hole, gradually blocking the drainage channel. Moreover, the inner wall of the tube will be quickly covered by proteins, bacteria and other substances in the body fluid, forming a biofilm. Long-term biofilm adhesion will reduce the effective flow cross-sectional area of ​​the lumen, increasing drainage resistance on the one hand, and further adsorbing solid particles on the other hand, accelerating the blockage process and causing a sharp drop in drainage efficiency.

[0004] When a drainage tube becomes blocked, clinical treatment usually involves flushing with normal saline, negative pressure aspiration, or replacing the drainage tube. Flushing with normal saline is difficult to completely remove stubborn blood clots and biofilms, and high-pressure flushing may cause backflow of fluid, leading to the spread of infection. Frequent replacement of drainage tubes will increase the patient's pain and medical costs, and multiple punctures can easily damage the organs and tissues in the abdominal cavity, posing a risk of secondary injury. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-clogging abdominal drainage tube with a built-in self-cleaning mechanism to solve the problems mentioned in the background art, which usually involve clearing the drainage tube by means of saline flushing, negative pressure aspiration, or changing the drainage tube. High-pressure flushing may cause backflow of accumulated fluid and lead to the spread of infection; frequent replacement of the drainage tube will increase the patient's pain and medical costs, and multiple puncture operations may easily damage the organs and tissues in the abdominal cavity.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An anti-clogging abdominal drainage tube with a built-in self-cleaning mechanism includes an outer abdominal drainage tube and an inner abdominal drainage tube fixedly fitted inside the outer tube. The inner abdominal drainage tube has several main suction ports and branch suction ports located on its lower sidewall. The main suction ports are positioned above the branch suction ports, which are horizontally strip-shaped and larger than the main suction ports. A drug placement assembly is threaded to the bottom of the inner abdominal drainage tube, and a support assembly is attached to the drug placement assembly. The support assembly is fixed to the bottom of the inner abdominal drainage tube. Several elastic skeletons are fixed to the edges of the support assembly, and a single cleaning assembly is fixed to the top of each elastic skeleton. The cleaning assembly is fitted outside the inner abdominal drainage tube and is currently positioned above the main suction ports and within the abdominal drainage system. Below the outflow tube, several connecting rods are fixed at the top edge of the cleaning assembly. A deflection assembly is fixed at the top of each connecting rod. The deflection assembly is sleeved on the outside of the abdominal drainage inner tube and slidably connected between the abdominal drainage outer tube and the abdominal drainage inner tube. A guide assembly is fixedly connected to the inner wall of the abdominal drainage outer tube. The deflection assembly and several connecting rods are located inside the guide assembly, which is positioned above the cleaning assembly. Several support rods are fixed at the top edge of the deflection assembly. The tops of these support rods penetrate the top of the abdominal drainage outer tube and are fixed with a pressure ring. The pressure ring is sleeved and slidably positioned above the outside of the abdominal drainage inner tube. A support pad is provided below the pressure ring and fixed to the top of the abdominal drainage outer tube. A debris removal assembly is installed inside the abdominal drainage inner tube.

[0008] As a further embodiment of the present invention, the drug placement assembly includes a medicine box, which is hemispherical in shape and has several overflow holes inside. A threaded sleeve is fixedly connected to the top of the medicine box, and the threaded sleeve is threadedly connected to the bottom end of the abdominal drainage tube.

[0009] As a further embodiment of the present invention, the support assembly includes a first support rail, which is fixed to the bottom end of the abdominal drainage tube and has a first slip ring slidably connected inside it. The cross-sectional shape of the first slip ring and the first support rail is T-shaped. A support ring is fixedly connected to the first slip ring, and the support ring is fixedly connected to the bottom end of a plurality of elastic skeletons.

[0010] As a further embodiment of the present invention, the cleaning assembly includes a cleaning sleeve, the inner wall of which is provided with a plurality of cleaning tentacles and sleeved on the outside of the abdominal drainage tube, the plurality of cleaning tentacles contacting the outer wall of the abdominal drainage tube, and the top edge of the cleaning sleeve being fixedly connected to the bottom end of a plurality of connecting rods.

[0011] As a further embodiment of the present invention, the deflection assembly includes a second support rail, the bottom of which is fixedly connected to the top of a plurality of connecting rods, a second slip ring is slidably connected inside the second support rail, both the second support rail and the slip ring have a T-shaped cross-section, a support ring is fixedly fixed on the second slip ring, the top edge of the support ring is fixedly connected to the bottom of a plurality of support rods, and a sliding column is fixedly connected to the outside of the second support rail.

[0012] As a further embodiment of the present invention, the guide assembly includes a fixed cylinder, which is fixedly connected to the inner wall of the abdominal drainage tube. The fixed cylinder has two inclined grooves and two vertical grooves. The highest point and the lowest point of the two inclined grooves are respectively connected to the two ends of the vertical grooves. The sliding column slides through the highest point of one of the inclined grooves.

[0013] As a further embodiment of the present invention, the impurity removal component includes a negative pressure adapter, which is installed at the top of the abdominal drainage tube. A bearing is fixed at the bottom of the negative pressure adapter by a connecting rod. An impeller is rotated inside the bearing and is located at the top opening of the abdominal drainage tube.

[0014] As a further embodiment of the present invention, a flexible support rod is fixedly connected to the bottom end of the impeller. The bottom end of the flexible support rod is rotatably connected to the bottom of the abdominal drainage tube through a bushing. A spiral scraping blade is fixed to the outside of the flexible support rod. The spiral scraping blade is attached to the inner wall of the abdominal drainage tube. The flexible support rod adopts a segmented elastic structure and adaptively adjusts its shape according to the bending deformation of the abdominal drainage tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention triggers the cleaning action by manually pressing the external pressure ring, causing the support ring to push the second sliding ring, which in turn moves the second support rail downwards. As the second sliding ring moves downwards, the sliding column slides along the inclined groove trajectory, forcing the second support rail to deflect circumferentially. This deflection, via the connecting rod, causes the cleaning assembly below to rotate synchronously. The cleaning tentacles can precisely scrape away tissue debris, blood clots, and other impurities adhering to the edges of the main suction port, the auxiliary suction ports, and the outer wall of the abdominal drainage tube. At the same time, the elastic skeleton provides stable support for the cleaning assembly, and the opening of multiple elastic skeletons can prevent organ tissue from being sucked into the main suction port and the auxiliary suction ports. During this process, the sliding column slides to the lowest end of the inclined groove and is located at the bottom of the vertical groove. After the pressure ring is released, the elastic restoring force of the elastic skeleton drives the cleaning component, connecting rod, and deflection component to move upward, causing the sliding column to slide upward in the vertical groove and move to the top of the vertical groove, so that the pressure ring returns to the initial position, completing one cleaning cycle. This eliminates the need for traditional methods such as rinsing with saline, negative pressure aspiration, or replacing the drainage tube, achieving efficient drainage and active anti-blockage. It significantly reduces the blockage rate of traditional drainage tubes and the risk of postoperative complications, and the entire operation is simple and does not require complex external power equipment.

[0017] 2. In this invention, during negative pressure drainage, the kinetic energy of the fluid flow inside the abdominal drainage tube drives the impurity removal component to rotate at high speed. The impeller is fixed to the connecting rod inside the negative pressure adapter via bearing components, enabling smooth rotation. The flexible support rod connected to its bottom end rotates synchronously with the impeller. The flexible support rod adopts a segmented elastic structure, which can adapt to the bending shape of the abdominal drainage tube, ensuring that the tube body is not damaged during rotation. Its external spiral scraping blades adhere to the inner wall of the abdominal drainage tube. During rotation, it can scrape off the biofilm and fine deposits attached to the inner wall. At the same time, the spiral structure generates axial thrust, pushing the scraped impurities upward. Finally, they are discharged with the drainage fluid through the negative pressure adapter to the external drainage equipment, avoiding secondary deposition of impurities in the lumen and realizing real-time dynamic cleaning of the inner wall of the abdominal drainage tube. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the abdominal drainage tube of the present invention;

[0021] Figure 3 This is a partial cross-sectional structural diagram of the present invention viewed from the front;

[0022] Figure 4 This is a schematic diagram of the unfolded structure of the drug delivery component and the support component of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection between the cleaning component and the elastic frame of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the guiding component of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection between the deflection component and the support rod of the present invention;

[0026] Figure 8 This is a schematic diagram of the unfolded deflection component of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the impurity removal component of the present invention;

[0028] Figure 10 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. External abdominal drainage tube; 2. Internal abdominal drainage tube; 3. Main suction port; 4. Suction branch port; 5. Medication placement assembly; 501. Medication box; 502. Overflow port; 503. Threaded sleeve; 6. Support assembly; 601. First support rail; 602. First slip ring; 603. Support ring; 7. Elastic skeleton; 8. Cleaning assembly; 801. Cleaning sliding sleeve; 802. Cleaning tentacles; 9. Connecting rod; 10. Deflection assembly ; 101, Second support rail; 102, Second slip ring; 103, Support ring; 104, Sliding column; 11, Guide assembly; 111, Fixed cylinder; 112, Inclined groove; 113, Vertical groove; 12, Support rod; 13, Pressure ring; 14, Support pad; 15, Impurity removal assembly; 151, Negative pressure adapter; 152, Bearing component; 153, Impeller; 154, Flexible support rod; 155, Spiral scraper blade. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-10 The present invention provides a technical solution:

[0033] A clog-resistant abdominal drainage tube with a built-in self-cleaning mechanism includes an outer abdominal drainage tube 1 and an inner abdominal drainage tube 2 fixedly connected inside the outer abdominal drainage tube 1. Several main suction holes 3 and auxiliary suction holes 4 are provided on the lower side wall of the inner abdominal drainage tube 2. The main suction holes 3 are located above the auxiliary suction holes 4. The auxiliary suction holes 4 have a transverse strip structure and are larger than the main suction holes 3. They are mainly used to aspirate medium to large amounts of accumulated fluid containing a small amount of tissue debris. The transverse strip design increases the suction contact area and reduces the probability of large particles directly clogging the channels. The main suction holes 3, located above the auxiliary suction holes 4, are used for fine aspiration of the upper clear fluid and the small amount of fluid not completely aspirated by the auxiliary suction holes 4, forming a graded drainage pattern of coarse aspiration followed by fine aspiration, improving the thoroughness of drainage. Efficient aspiration of accumulated fluid is achieved through the graded design of the main suction holes 3 and auxiliary suction holes 4.

[0034] As a further embodiment of the present invention, the bottom end of the abdominal drainage tube 2 is threadedly connected to a drug placement component 5. The drug placement component 5 includes a drug box 501, which is hemispherical in design and has several overflow holes 502 inside. The top of the drug box 501 is fixedly connected to a threaded sleeve 503, which is threadedly connected to the bottom end of the abdominal drainage tube 2.

[0035] During operation, the medicine box 501 is connected to the bottom end of the abdominal drainage tube 2 via a threaded sleeve 503, making disassembly and assembly convenient. Anti-infective and fluid absorption-promoting drugs can be pre-filled into the hemispherical medicine box 501. Several overflow holes 502 on the surface of the medicine box 501 allow the drugs to be slowly released into the local area of ​​the abdominal cavity, realizing integrated treatment of drainage and drug administration. This reduces the side effects of systemic medication and can specifically inhibit the growth of bacteria in the abdominal cavity, reducing the risk of infection.

[0036] As a further embodiment of the present invention, a support component 6 is attached to the drug placement component 5. The support component 6 is fixed at the bottom of the abdominal drainage tube 2. Several elastic skeletons 7 are fixed at the edges of the support component 6. The top of the several elastic skeletons 7 is fixed with the same cleaning component 8. The cleaning component 8 is sleeved on the outside of the abdominal drainage tube 2. The cleaning component 8 is currently positioned above the suction main port 3 and below the abdominal drainage tube 1.

[0037] During operation, the elastic skeleton 7 provides stable support for the cleaning component 8. The elastic skeleton 7 can adaptively adjust the opening angle according to the shape of the abdominal cavity space, so that the cleaning component 8 always fits the outer wall of the abdominal drainage tube 2, ensuring consistent cleaning effect under different surgical sites and different abdominal cavity shapes. Moreover, the opening of multiple elastic skeletons 7 can prevent organs and tissues from being sucked into the main suction port 3 and the suction branch port 4.

[0038] The support component 6 includes a first support rail 601, which is fixed to the bottom end of the abdominal drainage tube 2 and has a first slip ring 602 slidably connected inside. The cross-sectional shape of the first slip ring 602 and the first support rail 601 is T-shaped. A support ring 603 is fixedly connected to the first slip ring 602, and the support ring 603 is fixedly connected to the bottom end of several elastic skeletons 7.

[0039] During operation, one end of the elastic frame 7 is fixed to the support ring 603 of the support component 6. The support ring 603 is slidably connected to the first support rail 601 at the bottom of the abdominal drainage tube 2 via the first slip ring 602. It can adaptively adjust its angle as the cleaning component 8 rotates, ensuring stable and efficient cleaning action. Moreover, the first support rail 601 is fixed to the bottom of the abdominal drainage tube 2, and the T-shaped first slip ring 602 is slidably connected to the support ring 603. This provides a stable support point for the elastic frame 7 without restricting the rotation of the support ring 603 with the cleaning component 8, thus preventing uneven stress on the elastic frame 7 and potential breakage.

[0040] The cleaning assembly 8 includes a cleaning sleeve 801. The inner wall of the cleaning sleeve 801 is provided with a number of cleaning tentacles 802 and is sleeved on the outside of the abdominal drainage tube 2. The number of cleaning tentacles 802 are in contact with the outer wall of the abdominal drainage tube 2. The top edge of the cleaning sleeve 801 is fixedly connected to the bottom end of a number of connecting rods 9.

[0041] During operation, the cleaning tentacles 802 on the inner wall of the cleaning sleeve 801 fit tightly against the outer wall of the abdominal drainage tube 2. When rotating, the cleaning tentacles 802 can accurately scrape away tissue debris, blood clots and other impurities attached to the edges of the main suction port 3, the suction branch port 4 and the outer wall of the abdominal drainage tube 2.

[0042] As a further embodiment of the present invention, a plurality of connecting rods 9 are fixed at the top edge of the cleaning component 8, and a deflection component 10 is fixed at the top of the plurality of connecting rods 9. The deflection component 10 is sleeved on the outside of the abdominal drainage inner tube 2 and is slidably connected between the abdominal drainage outer tube 1 and the abdominal drainage inner tube 2.

[0043] The deflection assembly 10 includes a second support rail 101. The bottom of the second support rail 101 is fixedly connected to the top of several connecting rods 9. A second slip ring 102 is slidably connected inside the second support rail 101. The cross-sectional shape of the second support rail 101 and the second slip ring 102 is T-shaped. A support ring 103 is fixed on the second slip ring 102. The top edge of the support ring 103 is fixedly connected to the bottom of several support rods 12. A sliding column 104 is fixedly connected to the outside of the second support rail 101.

[0044] During operation, the support ring 103 pushes the second slip ring 102 to move the second support rail 101 downward, allowing the second support rail 101 to rotate within the second slip ring 102. This prevents the support rod 12 on the support ring 103 from deflecting and affecting the pressing operation of the pressure ring 13. Furthermore, the T-shaped cross-section of the second support rail 101 and the second slip ring 102 ensures the stability of the connection between the second support rail 101 and the second slip ring 102 and prevents them from disengaging.

[0045] As a further embodiment of the present invention, a guide assembly 11 is fixedly connected to the inner wall of the abdominal drainage tube 1. A deflection assembly 10 and several connecting rods 9 are located inside the guide assembly 11. The guide assembly 11 is located above the cleaning assembly 8. Several support rods 12 are fixed at the top edge of the deflection assembly 10. The top ends of the several support rods 12 penetrate the top of the abdominal drainage tube 1 and are fixed with a pressure ring 13. The pressure ring 13 is sleeved and slids above the outside of the abdominal drainage tube 2. A support pad 14 is provided below the pressure ring 13 and is fixed to the top of the abdominal drainage tube 1.

[0046] The guide assembly 11 includes a fixed cylinder 111, which is fixedly connected to the inner wall of the abdominal drainage tube 1. The fixed cylinder 111 has two inclined grooves 112 and two vertical grooves 113. The highest point and the lowest point of the two inclined grooves 112 are respectively connected to the two ends of the vertical grooves 113. The sliding column 104 slides through the highest point of one of the inclined grooves 112.

[0047] During operation, the sliding column 104 penetrates into the inclined groove 112 of the fixed cylinder 111 of the guide assembly 11, and the inclined groove 112 is connected to the vertical groove 113. When the second sliding ring 102 moves down, the sliding column 104 slides along the trajectory of the inclined groove 112, forcing the second support rail 101 to deflect circumferentially, and drives the cleaning assembly 8 below to rotate synchronously through the connecting rod 9 to scrape off impurities, thereby improving the cleaning effect of the cleaning assembly 8 on the bottom of the abdominal drainage tube 2.

[0048] During this process, the sliding column 104 slides to the lowest end of the inclined groove 112 and is located at the bottom of the vertical groove 113. After the pressure ring 13 is released, the elastic restoring force of the elastic frame 7 drives the cleaning component 8, the connecting rod 9, and the deflection component 10 to move upward, so that the sliding column 104 slides upward in the vertical groove 113 and moves to the top of the vertical groove 113, so that the pressure ring 13 returns to the initial position, completing one cleaning cycle.

[0049] As a further embodiment of the present invention, a cleaning component 15 is installed in the abdominal drainage tube 2. The cleaning component 15 includes a negative pressure adapter 151, which is installed at the top of the abdominal drainage tube 2. A bearing component 152 is fixed to the bottom of the negative pressure adapter 151 by a connecting rod. An impeller 153 is rotated inside the bearing component 152. The impeller 153 is located at the top opening of the abdominal drainage tube 2. A flexible support rod 154 is fixedly connected to the bottom end of the impeller 153.

[0050] During operation, the kinetic energy of the fluid flow inside the abdominal drainage tube 2 drives the impeller 153 of the impurity removal component 15 to rotate at high speed. The impeller 153 is fixed to the connecting rod inside the negative pressure adapter 151 through the bearing component 152, which can achieve smooth rotation and provide rotational power to the flexible support rod 154.

[0051] As a further embodiment of the present invention, the bottom end of the flexible support rod 154 is rotatably connected to the bottom of the abdominal drainage tube 2 through a bushing. A spiral scraping blade 155 is fixed to the outside of the flexible support rod 154. The spiral scraping blade 155 is attached to the inner wall of the abdominal drainage tube 2. The flexible support rod 154 adopts a segmented elastic structure and adaptively adjusts its shape according to the bending deformation of the abdominal drainage tube 2.

[0052] During operation, the flexible support rod 154 connected to the bottom of the impeller 153 rotates synchronously with the impeller 153. The flexible support rod 154 adopts a segmented elastic structure, which can adapt to the bending shape of the abdominal drainage tube 2, ensuring that the tube body is not damaged during rotation. The spiral scraping blade 155 fits against the inner wall of the abdominal drainage tube 2. When rotating, it can scrape off the biofilm and fine deposits attached to the inner wall. At the same time, the spiral structure generates axial thrust, pushing the scraped impurities upward, and finally discharged with the drainage fluid, which facilitates the automatic cleaning of the inner wall of the abdominal drainage tube 2.

[0053] Working principle of this invention:

[0054] During operation, the abdominal drainage external tube 1 and abdominal drainage internal tube 2 assembly are inserted into the designated location in the patient's abdominal cavity, ensuring that the main suction port 3, suction branch port 4, and drug placement component 5 on the side wall of the abdominal drainage internal tube 2 are completely immersed in the peritoneal effusion area. Simultaneously, the support pad 14 at the top of the abdominal drainage external tube 1 is aligned with the patient's body surface for positioning and fixation. Then, the negative pressure adapter 151 at the top of the abdominal drainage internal tube 2 is connected to the clinical negative pressure drainage device. After the negative pressure device is turned on, a stable negative pressure field is formed inside the abdominal drainage internal tube 2, through... The graded design of the main suction port 3 and the secondary suction port 4 enables efficient suction of accumulated liquid. The secondary suction port 4 adopts a horizontal strip structure and is larger than the main suction port 3. It is mainly used to suction medium to large amounts of accumulated liquid containing a small amount of tissue debris. The horizontal strip design can increase the suction contact area and reduce the probability of large particles directly clogging the channel. The main suction port 3 is located above the secondary suction port 4 and is used for fine suction of the upper clear liquid and the small amount of accumulated liquid that was not completely suctioned by the secondary suction port 4, forming a graded drainage mode of first coarse suction and then fine suction.

[0055] When the main suction port 3 and the secondary suction port 4 at the bottom of the abdominal drainage tube 2 show signs of blockage, such as increased negative pressure or decreased drainage flow rate, a cleaning action is triggered by manually pressing the external pressure ring 13. The pressure ring 13 is sleeved on the outside of the abdominal drainage tube 2. After pressing, it slides downward along the axial direction of the abdominal drainage tube 2, causing several support rods 12 connected at the top to move downward synchronously. The bottom end of the support rod 12 is fixed to the support ring 103 of the deflection assembly 10. The support ring 103 pushes the second slip ring 102 to move the second support rail 101 downward. Since the sliding column 104 of the deflection assembly 10 is embedded through... The guide assembly 11 is fixed in the inclined groove 112 of the cylinder 111, and the inclined groove 112 is connected to the vertical groove 113. When the second slip ring 102 moves down, the sliding column 104 slides along the trajectory of the inclined groove 112, forcing the second support rail 101 to deflect circumferentially, and driving the cleaning assembly 8 below to rotate synchronously through the connecting rod 9. During this process, the support ring 103 and the second slip ring 102 can only move vertically downward, so that the second support rail 101 can rotate in the second slip ring 102, avoiding the deflection of the support rod 12 on the support ring 103, which affects the pressing operation of the pressure ring 13.

[0056] The cleaning sleeve 801 of the cleaning assembly 8 is fitted onto the outside of the abdominal drainage tube 2. The cleaning tentacles 802 on its inner wall are tightly fitted to the outer wall of the abdominal drainage tube 2. During rotation, the cleaning tentacles 802 can precisely scrape away tissue debris, blood clots, and other impurities adhering to the edges of the main suction port 3 and the auxiliary suction port 4, as well as the outer wall of the abdominal drainage tube 2. Simultaneously, the elastic skeleton 7 provides stable support for the cleaning assembly 8. The elastic skeleton 7 can adaptively adjust its opening angle according to the shape of the abdominal cavity, ensuring that the cleaning assembly 8 always fits against the outer wall of the abdominal drainage tube 2. This ensures consistent cleaning results for different surgical sites and different abdominal cavity shapes. Furthermore, the opening of multiple elastic skeletons 7 can prevent organ tissue from being sucked into the main suction port 3 and the auxiliary suction port 4. One of the elastic skeletons 7... The end is fixed on the support ring 603 of the support component 6. The support ring 603 is slidably connected to the first support rail 601 at the bottom of the abdominal drainage tube 2 through the first slip ring 602. It can adaptively adjust the angle as the cleaning component 8 rotates to avoid deformation and damage to the skeleton and ensure stable and efficient cleaning action. During this process, the sliding column 104 slides to the lowest end of the inclined groove 112 and is located at the bottom of the vertical groove 113. After the pressure ring 13 is released, the elastic restoring force of the elastic skeleton 7 drives the cleaning component 8, the connecting rod 9, and the deflection component 10 to move upward, so that the sliding column 104 slides upward in the vertical groove 113 and moves to the top of the vertical groove 113, so that the pressure ring 13 returns to the initial position and completes one cleaning cycle. It can be repeated according to the blockage situation.

[0057] During negative pressure drainage, the kinetic energy of the fluid flow inside the abdominal drainage tube 2 drives the impeller 153 of the impurity removal component 15 to rotate at high speed. The impeller 153 is fixed to the connecting rod inside the negative pressure adapter 151 through the bearing component 152, which can achieve smooth rotation. The flexible support rod 154 connected to its bottom end rotates synchronously with the impeller 153. The flexible support rod 154 adopts a segmented elastic structure, which can adapt to the bending shape of the abdominal drainage tube 2 and ensure that the tube body is not damaged during rotation. The spiral scraping blades 155 on its outside are attached to the inner wall of the abdominal drainage tube 2. When rotating, they can scrape off the biofilm and fine deposits attached to the inner wall. At the same time, the spiral structure generates axial thrust, pushing the scraped impurities upward. Finally, they are discharged to the external drainage equipment through the negative pressure adapter 151 along with the drainage fluid.

[0058] The drug placement component 5 is threadedly connected to the bottom end of the abdominal drainage tube 2 via a threaded sleeve 503, making it easy to assemble and disassemble. Anti-infective and fluid absorption-promoting drugs can be pre-filled into the hemispherical drug box 501. Several overflow holes 502 on the surface of the drug box 501 allow the drugs to be slowly released into the local area of ​​the abdominal cavity, realizing integrated drainage and drug administration. This reduces the side effects of systemic medication and can specifically inhibit the growth of bacteria in the abdominal cavity, reducing the risk of infection. At the same time, the drug release process can soften some stubborn blood clots, helping to improve the anti-clogging effect of the cleaning component 8.

Claims

1. A self-cleaning mechanism built-in anti-blocking type abdominal drainage tube, comprising an abdominal drainage outer tube (1), characterized in that: The abdominal cavity drainage outer tube (1) is internally sleeved with an abdominal cavity drainage inner tube (2), a plurality of suction main holes (3) and suction branch holes (4) are arranged in the lower position of the side wall of the abdominal cavity drainage inner tube (2), the suction main holes (3) are located above the suction branch holes (4), the suction branch holes (4) are designed in a transverse strip shape and have a larger specification than the suction main holes (3), a medicine placing assembly (5) is threadedly connected to the bottom end of the abdominal cavity drainage inner tube (2), a supporting assembly (6) is overlapped on the medicine placing assembly (5), the supporting assembly (6) is fixed to the bottom position of the abdominal cavity drainage inner tube (2), a plurality of elastic skeletons (7) are respectively fixed to the edges of the supporting assembly (6), a same cleaning assembly (8) is fixed to the top end of the elastic skeletons (7), the cleaning assembly (8) is sleeved outside the abdominal cavity drainage inner tube (2), the cleaning assembly (8) is currently located above the suction main holes (3) and below the abdominal cavity drainage outer tube (1), a plurality of connecting rods (9) are fixed to the edges of the top of the cleaning assembly (8), a deflection assembly (10) is fixed to the top end of the connecting rods (9), the deflection assembly (10) is sleeved outside the abdominal cavity drainage inner tube (2) and is slidingly connected between the abdominal cavity drainage outer tube (1) and the abdominal cavity drainage inner tube (2), a guide assembly (11) is fixedly connected to the inner wall of the abdominal cavity drainage outer tube (1), the deflection assembly (10) and the connecting rods (9) are located inside the guide assembly (11), the guide assembly (11) is located above the cleaning assembly (8), a plurality of supporting rods (12) are fixed to the edges of the top of the deflection assembly (10), the top end of the supporting rods (12) penetrates through the top of the abdominal cavity drainage outer tube (1) and is fixed with a pressing ring (13), the pressing ring (13) is sleeved and slidingly arranged above the outside of the abdominal cavity drainage inner tube (2), a supporting pad (14) is arranged below the pressing ring (13), the supporting pad (14) is fixed to the top of the abdominal cavity drainage outer tube (1), and a foreign matter removing assembly (15) is installed in the abdominal cavity drainage inner tube (2).

2. The anti-blocking peritoneal drainage tube with a built-in self-cleaning mechanism according to claim 1, characterized in that: The medicine placing assembly (5) comprises a medicine box (501), the medicine box (501) is designed in a semispherical shape and is internally provided with a plurality of overflow holes (502), and the top of the medicine box (501) is fixedly connected with a threaded sleeve (503); the threaded sleeve (503) is threadedly connected to the bottom end of the abdominal cavity drainage inner tube (2).

3. The anti-blocking peritoneal drainage tube with a built-in self-cleaning mechanism according to claim 1, characterized in that: The supporting assembly (6) comprises a first supporting rail (601), the first supporting rail (601) is fixed to the bottom end of the abdominal cavity drainage inner tube (2) and is internally slidingly connected with a first sliding ring (602), the cross-sectional shape of the first sliding ring (602) and the first supporting rail (601) is T-shaped, a supporting ring (603) is fixedly connected to the first sliding ring (602), and the supporting ring (603) is fixedly connected with the bottom end of the elastic skeletons (7).

4. The anti-blocking peritoneal drainage tube with a built-in self-cleaning mechanism according to claim 1, characterized in that: The cleaning assembly (8) comprises a cleaning sliding sleeve (801), the inner wall of the cleaning sliding sleeve (801) is provided with a plurality of cleaning tentacles (802), and the cleaning sliding sleeve (801) is sleeved outside the abdominal cavity drainage inner tube (2); the plurality of cleaning tentacles (802) are in contact with the outer wall of the abdominal cavity drainage inner tube (2); and the edge of the top of the cleaning sliding sleeve (801) is fixedly connected with the bottom end of the plurality of connecting rods (9).

5. The anti-blocking peritoneal drainage tube with a built-in self-cleaning mechanism according to claim 1, characterized in that: The deflection assembly (10) comprises a second support rail (101), the bottom of the second support rail (101) is fixedly connected with the top end of the plurality of connecting rods (9), the second support rail (101) is slidably connected with a second sliding ring (102) inside, the cross-sectional shape of the second support rail (101) and the second sliding ring (102) is T-shaped, a support ring (103) is fixed on the second sliding ring (102), the edge of the top of the support ring (103) is fixedly connected with the bottom end of the plurality of support rods (12), and the second support rail (101) is fixedly connected with a sliding column (104) outside.

6. The anti-blocking peritoneal drainage tube with a built-in self-cleaning mechanism according to claim 5, characterized in that: The guide assembly (11) comprises a fixed cylinder (111), the fixed cylinder (111) is fixedly connected to the inner wall of the abdominal cavity drainage outer tube (1), two inclined grooves (112) and two vertical grooves (113) are formed in the fixed cylinder (111), the highest point and the lowest point of the two inclined grooves (112) are respectively communicated with both ends of the vertical grooves (113), and the sliding column (104) penetrates through the highest point of one of the inclined grooves (112).

7. The anti-blocking peritoneal drainage tube with a built-in self-cleaning mechanism according to claim 1, characterized in that: The impurity removal assembly (15) comprises a negative pressure adapter (151), the negative pressure adapter (151) is installed at the top end of the abdominal cavity drainage inner tube (2), a bearing piece (152) is fixedly connected to the bottom position in the negative pressure adapter (151), a impeller (153) is rotatably sleeved in the bearing piece (152), and the impeller (153) is located at the top opening of the abdominal cavity drainage inner tube (2).

8. The anti-blocking peritoneal drainage tube with a built-in self-cleaning mechanism according to claim 7, characterized in that: The bottom end of the impeller (153) is fixedly connected with a flexible support rod (154), the bottom end of the flexible support rod (154) is rotatably connected to the bottom in the abdominal cavity drainage inner tube (2) through a shaft sleeve, a spiral scraping blade (155) is fixedly connected to the outside of the flexible support rod (154), the spiral scraping blade (155) is attached to the inner wall of the abdominal cavity drainage inner tube (2), and the flexible support rod (154) adopts a segmented elastic structure and can be adaptively adjusted in shape along with the bending deformation of the abdominal cavity drainage inner tube (2).

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