Flushing drainage tube

Abstract

The invention relates to a flushing drainage tube which comprises a tube body mechanism, the tube body mechanism comprises a first tube body, a second tube body, a plurality of first guide tubes and a plurality of second guide tubes, the second tube body is sleeved with the first tube body, and a spacing space is defined by the first tube body and the second tube body; one end of each of the first catheter and the second catheter is communicated with the second catheter body, and the other end of each of the first catheter and the second catheter penetrates through the first catheter body and is communicated with the outside; the adjusting mechanism comprises a first sliding part and a connecting pipe, the first sliding part is movably arranged in the length direction of the spacing space, and one end of the connecting pipe is connected to the first sliding part; the end socket is detachably arranged at the first end of the first pipe body. Through the arrangement, a positive pressure medium and negative pressure waste liquid are physically isolated to prevent series flow, the flushing and drainage efficiency is improved, and the secondary infection risk caused by waste liquid backflow is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of drainage tube technology, and in particular to a flushing drainage tube. Background Technology

[0002] Flushing and drainage tubes are widely used in postoperative care and treatment of infected sites. Their function is to flush away clumps of substances such as blood clots, tissue fragments, fibrin, or purulent secretions in the target area, such as the abdominal cavity, while using negative pressure drainage to promptly remove waste fluid, thereby maintaining area cleanliness and promoting tissue healing.

[0003] Existing flushing and drainage tubes often employ a single primary tube structure, lacking effective physical isolation design. This leads to easy cross-flow of media between the positive pressure flushing channel and the negative pressure drainage channel, which not only reduces flushing and drainage efficiency but may also cause secondary infection risks due to waste liquid backflow. For irregular or large areas, incomplete drainage and local accumulation of fluid and pus often occur. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the drainage tubes in the prior art mostly adopt a single first tube structure and lack effective physical isolation design, which leads to the problem that the positive pressure flushing channel and the negative pressure drainage channel are prone to cross-flow of media, thereby providing a flushing drainage tube.

[0005] To solve the above-mentioned technical problems, the present invention provides a flushing drainage tube, comprising:

[0006] The tube structure includes: a first tube, a second tube, a plurality of first conduits and a plurality of second conduits. The first tube is sleeved on the second tube. The first tube and the second tube form a space between them. The first and second conduits are configured such that one end is connected to the second tube and the other end passes through the first tube and is connected to the outside. The first tube has a plurality of negative pressure holes and the second tube is connected to a positive pressure source.

[0007] The adjustment mechanism includes: a first sliding member and a connecting tube. The first sliding member is movably arranged along the length direction of the spacing space. One end of the connecting tube is connected to the first sliding member, and the other end of the connecting tube extends to one end outside the spacing space and is connected to a negative pressure source. The first sliding member has a plurality of first clearance grooves that are respectively adapted to the first conduit along its axial direction. The first sliding member has a plurality of negative pressure channels. The input side of the plurality of negative pressure channels can be connected to a plurality of negative pressure holes. The negative pressure holes and the first conduit are staggered along the circumference of the first tube body.

[0008] A cap is detachably mounted at the first end of the first tube body. The cap and the first tube body enclose a drug storage space that communicates with the second tube body. The cap is provided with multiple filter holes.

[0009] In one embodiment of the present invention, a first partition is provided inside the second tube, and the first partition and the second tube respectively enclose a first subspace and a second subspace. Two sets of second partitions are provided between the second tube and the first tube. A third subspace and a fourth subspace are enclosed between the second tube, the first tube and the second partitions. The first sliding member is movably disposed in the third subspace, and a second sliding member is movably connected in the fourth subspace.

[0010] In one embodiment of the present invention, the first conduit and the second conduit are located in the first subspace and the second subspace, respectively. The first tube and the second tube are respectively provided with a first positive pressure hole and a second positive pressure hole that are radially corresponding. The second sliding member is provided with a positive pressure channel with both ends connected to the first positive pressure hole and the second positive pressure hole to form a second positive pressure flow channel. The second sliding member is provided with a second clearance groove that is adapted to move axially relative to the second conduit.

[0011] In one embodiment of the present invention, the second sliding member and the connecting pipe are circumferentially movable along the first pipe body. The second end of the first pipe body and the second pipe body are provided with a second sealing plate. The second sealing plate has an oblong hole adapted to the moving path of the connecting pipe. The second sliding member has a third clearance groove adapted to the circumferential movement relative to the second guide tube. The third clearance groove is connected to the second clearance groove.

[0012] In one embodiment of the present invention, the first sliding member includes: a first base and a plurality of first supports connected to the first base, and the second sliding member includes: a second base and a plurality of second supports connected to the second base, wherein the negative pressure flow channel extends into the first base and the first supports respectively.

[0013] In one embodiment of the present invention, a first sub-channel is provided in the first base along the axial direction. One side of the first sub-channel is connected to the connecting pipe through a second sub-channel. The other side of the first sub-channel extends into the support body along the axial direction of the first sliding member through a plurality of third sub-channels. The third sub-channel is connected to the negative pressure hole through a plurality of fourth sub-channels.

[0014] In one embodiment of the present invention, the ends of the first sliding member and the second sliding member are respectively provided with a first positioning part, and the first end of the second tube is provided with a second positioning part, the shapes of the first positioning part and the second positioning part correspond to each other.

[0015] In one embodiment of the present invention, the outer wall of the second positioning part is provided with a stepped surface, the stepped surface is provided with an external thread, the end cap is provided with an internal thread adapted to the external thread, and the first end of the first tube and the second tube is provided with a first sealing plate.

[0016] In one embodiment of the present invention, a first narrowing portion and a second narrowing portion are respectively provided on both sides of the negative pressure hole, a cutting portion is provided in a ring between the first narrowing portion and the second narrowing portion, and the first sliding member is provided with a cutting ring adapted to the first narrowing portion and capable of extending to the cutting portion, the cutting ring being provided on the periphery of the negative pressure hole.

[0017] In one embodiment of the present invention, the first subspace and the second subspace are respectively connected to a first positive pressure source and a second positive pressure source.

[0018] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial effects: By arranging the negative pressure holes and catheters alternately along the circumference of the first tube body, the negative pressure drainage area and the catheter delivery area complement each other without functional interference, ensuring that flushing, drug administration and drainage operations do not affect each other, and further improving the stability of coordinated operation. The first sliding member in the adjustment mechanism can move freely along the length of the spacing space, and the negative pressure flow channel opened inside it can selectively connect with the negative pressure holes at different positions as the sliding member moves. The operator can accurately adjust the axial and circumferential coverage of the negative pressure effect according to the actual range of the target area and the distribution of the accumulated fluid, so as to achieve targeted drainage. At the same time, through the nested arrangement of the first tube body and the second tube body, an independent spacing space is formed between the two as a negative pressure drainage channel, and the interior of the second tube body serves as the main channel for positive pressure flushing. By physically isolating the positive pressure medium and the negative pressure waste liquid to prevent crossflow, the efficiency of flushing and drainage is improved, and the risk of secondary infection caused by waste liquid backflow is effectively avoided, ensuring the safety of clinical use. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the drainage tube of the present invention;

[0021] Figure 2 This is the present invention. Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a cross-sectional view of the first sliding member of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the first sliding member of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the first side of the first tube body of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the second side of the first tube body of the present invention;

[0026] Figure 7 This is a schematic diagram of the connecting pipe and the first base of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the second tube body of the present invention;

[0028] Figure 9 This is a cross-sectional view of the second slider of the present invention.

[0029] Explanation of reference numerals in the accompanying drawings: 1. First tube body; 101. Negative pressure hole; 102. First positive pressure hole; 2. Second tube body; 201. Second positive pressure hole; 3. First sliding member; 31. First base; 32. First support body; 33. First clearance groove; 34. Negative pressure flow channel; 341. Second sub-flow channel; 342. First sub-flow channel; 343. Third sub-flow channel; 344. Fourth sub-flow channel; 4. Second sliding member; 41. Second base; 42. Second clearance groove; 43. Third clearance groove; 44. Positive pressure channel; 45. Second support body; 5. End cap; 6. First guide tube; 7. Second guide tube; 9. Stepped surface; 10. Second positioning part; 11. Connecting pipe; 12. Connecting rod; 13. First partition plate; 14. Second partition plate; 15. Waist-shaped hole; 16. Second sealing plate. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0031] Example

[0032] Reference Figures 1-9 As shown, a flushing drainage tube of the present invention includes:

[0033] The tube structure includes: a first tube 1, a second tube 2, a plurality of first conduits 6 and a plurality of second conduits 7. The first tube 1 is sleeved on the second tube 2. The first tube 1 and the second tube 2 enclose a space. The first conduits 6 and the second conduits 7 are both configured such that one end is connected to the inside of the second tube 2 and the other end passes through the first tube 1 and is connected to the outside. The first tube 1 has a plurality of negative pressure holes 101. The second tube 2 is connected to a positive pressure source.

[0034] The adjustment mechanism includes a first sliding member 3 and a connecting pipe 11. The first sliding member 3 is movably arranged along the length direction of the spacing space. One end of the connecting pipe 11 is connected to the first sliding member 3, and the other end of the connecting pipe 11 extends outside the spacing space and is connected to a negative pressure source. The first sliding member 3 has a plurality of first clearance grooves 33 respectively adapted to the first conduit 6 along its axial direction. The first sliding member 3 has a plurality of negative pressure channels 34. The input side of the plurality of negative pressure channels 34 can be connected to a plurality of negative pressure holes 101. The negative pressure holes 101 and the first conduit 6 are staggered along the circumference of the first pipe body 1.

[0035] The end cap 5 is detachably disposed at the first end of the first tube 1. The end cap 5 and the first tube 1 enclose a drug storage space that communicates with the second tube 2. The end cap 5 has multiple filter holes.

[0036] The flushing and drainage tube of this invention employs a coaxial nested assembly method. A first tube 1 and a second tube 2 are coaxially arranged, with a uniform gap reserved between the inner wall of the first tube 1 and the outer wall of the second tube 2, forming a space surrounding the second tube 2. This space provides a channel for negative pressure drainage while preventing cross-flow with the positive pressure flushing medium inside the second tube 2. A first conduit 6 is evenly distributed circumferentially along the second tube 2. One end of the first conduit 6 is fixedly connected to the internal space of the second tube 2, ensuring that the flushing medium or other auxiliary media inside the second tube 2 can be discharged through the first conduit 6. The other end radially penetrates the wall of the first tube 1 and extends to the outside, achieving directional delivery of the medium. Negative pressure holes 101 are formed on the wall of the first tube 1, evenly distributed axially and circumferentially along the first tube 1, and staggered circumferentially with the first conduit 6. That is, a first conduit 6 is correspondingly positioned between two adjacent negative pressure holes 101 to avoid interference, while ensuring that the negative pressure range and the range of the first conduit 6 complement each other, covering the entire target area. The end of the second pipe 2 is fixedly connected to the positive pressure source to provide stable positive pressure power for the flushing medium.

[0037] Reference Figure 4As shown, the first sliding member 3 is an annular fan-shaped structure. Its inner side is adapted to the outer side of the second tube 2, and its outer side is adapted to the inner side of the first tube 1, allowing it to slide along the length of the spacing space. The connecting pipe 11 is a rigid tubular structure. One end of it is fixedly connected to the side wall of the first sliding member 3 and communicates with the negative pressure flow channel 34 inside the first sliding member 3. The other end extends through the spacing space to the outside and is fixedly connected to the negative pressure source, providing a power transmission channel for negative pressure drainage. The first sliding member 3 has multiple first clearance grooves 33 axially. The first conduit 6 is in multiple sets, distributed circumferentially. The number of first clearance grooves 33 is consistent with the number of sets of first conduits 6, and their positions correspond to the distribution positions of the first conduits 6. The groove width is adapted to the outer diameter of the first conduit 6, ensuring that the first conduit 6 can be embedded in the first clearance groove 33 when the first sliding member 3 moves axially, avoiding collision or jamming between the two and ensuring the smoothness of the adjustment process. The negative pressure flow channel 34 is opened inside the first sliding member 3 and extends along the axial and radial directions of the first sliding member 3. Its input side is connected to the connecting pipe 11, and its output side is evenly distributed along the circumference of the first sliding member 3. The position of the output side corresponds to the position of the negative pressure hole 101 on the first pipe body 1. When the first sliding member 3 moves to the target position, the output side of the negative pressure flow channel 34 can be precisely aligned with the corresponding negative pressure hole 101 to form a complete negative pressure drainage channel.

[0038] The end cap 5 is a hemispherical cap structure, detachably mounted at the first end of the first tube 1. Its inner wall forms a sealed fit with the outer wall of the first tube 1 and the end of the second tube 2, enclosing a drug storage space. This drug storage space is connected to the internal space of the second tube 2 and can be used to store therapeutic agents, allowing the agents to be delivered to the target area along with the flushing medium in the second tube 2, realizing the functions of flushing and drug administration. Filter holes are formed on the end face of the end cap 5, evenly distributed along the circumference of the end cap 5. The pore size is precisely designed to allow the flushing medium and agents to pass smoothly while preventing external drug impurities from entering the target location.

[0039] Reference Figure 5 As shown, the second tube 2 is provided with a first partition 13. The first partition 13 and the second tube 2 respectively enclose a first subspace and a second subspace. Two sets of second partitions 14 are provided between the second tube 2 and the first tube 1. The second tube 2, the first tube 1 and the second partitions 14 enclose a third subspace and a fourth subspace. The first sliding member 3 is movably disposed in the third subspace. The fourth subspace is also movably connected to a second sliding member 4.

[0040] The edge of the first partition 13 is tightly fitted to the inner wall of the second tube 2 and extends axially to form a sealed connection, dividing the internal space of the second tube 2 axially into two independent first subspaces and second subspaces. The two subspaces are isolated from each other, enabling independent control of flushing. The positive pressure source is the positive pressure flushing medium source, which is generally flushing liquid, and the negative pressure source is the negative pressure air source. Both sets of second partitions 14 are long strip-shaped plate structures that extend axially along the second tube 2 and are symmetrically arranged in the space between the first tube 1 and the second tube 2. One end of the second partition 14 is fixedly connected to the first sealing plate, and the other end is fixedly connected to the second sealing plate 16. The inner side of the second partition 14 is tightly fitted to the outer wall of the second tube 2, and the outer side is tightly fitted to the inner wall of the first tube 1, forming a sealed connection, thereby dividing the space circumferentially into two independent third subspaces and fourth subspaces. The third subspace and the fourth subspace are isolated from each other.

[0041] Reference Figure 1 As shown, the first sliding member 3 is movably disposed within the third subspace. The dimensions of the third subspace are adapted to the shape of the first sliding member 3, providing a channel for its movement and ensuring that it is not interfered with by other components when moving axially and circumferentially. Simultaneously, the sealing design of the third subspace ensures the stability of negative pressure during the negative pressure drainage process and reduces negative pressure leakage. The dimensions of the fourth subspace are adapted to the shape of the second sliding member 4. The second sliding member 4 has an annular structure, with its inner diameter matching the outer diameter of the second tube 2 and its outer diameter matching the inner diameter of the first tube 1. It can move smoothly along the axial and circumferential directions of the fourth subspace. A clearance fit is used between the second sliding member 4 and the inner wall of the fourth subspace, ensuring smooth movement while achieving a certain sealing effect through the gap to prevent media cross-flow. All connections between the partitions and the tubes are integrally formed or welded to ensure connection strength and sealing. The material of the partitions is consistent with that of the tubes, possessing good biocompatibility and corrosion resistance, suitable for clinical application environments.

[0042] The first and second subspaces can be used to deliver different types of flushing media or different pressure flows of the same media, respectively. Because they are isolated from each other, they can be flexibly configured according to clinical needs. For example, ordinary flushing solution can be delivered in the first subspace, and medicated flushing solution in the second subspace, achieving differentiated flushing. The third subspace serves as a channel for negative pressure drainage. When the first sliding member 3 moves within it, the connection between the negative pressure flow channel 34 and the negative pressure hole 101 can be adjusted to control the range and intensity of negative pressure drainage. Because the third subspace is isolated from other subspaces, the efficiency of negative pressure utilization is improved. The second sliding member 4 in the fourth subspace can serve as a carrier for the positive pressure adjustment mechanism. Its movement allows for flexible adjustment of the positive pressure flushing path, working in conjunction with the negative pressure adjustment function in the third subspace to form a bidirectional adjustment system for both positive and negative pressure. During operation, each subspace operates independently, and the media flow does not interfere with each other. The first partition 13 and the second partition 14 not only serve to divide the space but also enhance the overall structural strength of the tube, preventing deformation of the tube under pressure.

[0043] Reference Figures 5-6 As shown, the first conduit 6 and the second conduit 7 are located in the first subspace and the second subspace, respectively. The first tube body 1 and the second tube body 2 are respectively provided with a first positive pressure hole 102 and a second positive pressure hole 201 that are radially corresponding. The second sliding member 4 is provided with a positive pressure channel 44 with both ends connected to the first positive pressure hole 102 and the second positive pressure hole 201 to form a second positive pressure flow channel. The second sliding member 4 is provided with a second clearance groove 42 adapted to move axially relative to the second conduit 7. A first positive pressure flow channel is formed in the second conduit 7. The first positive pressure flow channel and the second positive pressure flow channel are located on the same side of the drainage tube. The first conduit 6 forms a third positive pressure flow channel. The outlets of the third positive pressure flow channel and the negative pressure flow channel 34 are staggered.

[0044] Reference Figure 1 As shown, the conduits are divided into a first conduit 6 and a second conduit 7 with identical structures. The number of first conduits 6 is adapted to the functional requirements of the first subspace and is evenly distributed along the circumference of the first subspace. One end of the first conduit 6 is fixedly connected to the first subspace, and the other end extends through the wall of the first tube body 1 to the outside, ensuring that the medium in the first subspace can be accurately transported to the target area through the first conduit 6. The second conduit 7 is correspondingly set in the second subspace, and its arrangement is the same as that of the first conduit 6. One end is fixedly connected to the second subspace, and the other end extends through the wall of the first tube body 1 to the outside, realizing the directional transport of the medium in the second subspace.

[0045] The first positive pressure hole 102 is formed on the wall of the first pipe body 1, and the second positive pressure hole 201 is formed on the wall of the second pipe body 2. The first positive pressure hole 102 and the second positive pressure hole 201 correspond one-to-one radially, that is, the axis of each first positive pressure hole 102 coincides with the axis of the corresponding second positive pressure hole 201, ensuring that the medium can be smoothly output from the second pipe body 2 through the second positive pressure hole 201 and the first positive pressure hole 102 to the target area. The first positive pressure hole 102 and the second positive pressure hole 201 are evenly distributed along the axial and circumferential directions of the first pipe body 1 and the second pipe body 2, and are staggered with the negative pressure hole 101 and the conduit to avoid functional interference.

[0046] Reference Figure 9 As shown, the positive pressure channel 44 of the second sliding member 4 is a through-hole structure that penetrates the thickness of its body and is opened radially along the second sliding member 4. The diameter of the positive pressure channel 44 is adapted to the diameter of the first positive pressure hole 102 and the second positive pressure hole 201, and its two end openings correspond to the positions of the first positive pressure hole 102 and the second positive pressure hole 201, respectively. When the second sliding member 4 moves, the positive pressure channel 44 can align with the first positive pressure hole 102 and the second positive pressure hole 201 at different positions, forming different numbers of positive pressure output channels. The second clearance groove 42 is opened axially along the second sliding member 4, and its number is consistent with the number of the second guide tubes 7. Its position corresponds to the distribution position of the second guide tubes 7, and the groove width is adapted to the outer diameter of the second guide tubes 7, ensuring that the second guide tubes 7 can be embedded in the second clearance groove 42 when the second sliding member 4 moves axially, avoiding collision or jamming between the two and ensuring the smoothness of the adjustment process. The material of the second sliding member 4 is the same as that of the first sliding member 3, and it has good wear resistance and sealing performance.

[0047] The first positive pressure source delivers the medium to the first subspace. The medium can be directly delivered to a specific position in the target area through the first conduit 6, achieving precise rinsing along the corresponding path. The second positive pressure source delivers the medium to the second subspace. When it is necessary to adjust the rinsing position of the second subspace, the second sliding member 4 moves axially. The second conduit 7 is embedded in the second clearance groove 42 to avoid interference with the second sliding member 4, allowing the second sliding member 4 to move smoothly to the target position. At this time, the positive pressure channel 44 on the second sliding member 4 is precisely aligned with the second positive pressure hole 201 and the first positive pressure hole 102 at that position, forming a positive pressure output channel. The medium in the second subspace is output to the corresponding position in the target area through the positive pressure channel 44, the second positive pressure hole 201, and the first positive pressure hole 102, achieving flexible adjustment of the rinsing position.

[0048] By moving the second sliding member 4, the positive pressure channel 44 can be aligned with positive pressure holes at different axial positions, thereby adjusting the axial range of the positive pressure flushing. Simultaneously, the second sliding member 4 can rotate circumferentially to align the positive pressure channel 44 with positive pressure holes at different circumferential positions, adjusting the circumferential angle of the flushing and achieving multi-dimensional flushing position adjustment. The independent arrangement of the first conduit 6 and the second conduit 7 allows the flushing operations of the two subspaces to be performed simultaneously or separately, improving operational flexibility.

[0049] The second sliding member 4 and the connecting pipe 11 can move circumferentially along the first pipe body 1. The second end of the first pipe body 1 and the second pipe body 2 is provided with a second sealing plate 16. The second sealing plate 16 has an oblong hole 15 adapted to the moving path of the connecting pipe 11. The second sliding member 4 has a third clearance groove 43 adapted to move circumferentially relative to the second guide tube 7. The third clearance groove 43 is connected to the second clearance groove 42.

[0050] Reference Figure 9 As shown, moving the connecting pipe 11 axially causes the first sliding member 3 and the second sliding member 4 to move axially, adjusting the alignment of the negative pressure flow channel 34 and the positive pressure channel 44 with holes at different axial positions, thus achieving axial range adjustment. Moving the connecting rod 12 circumferentially along the waist-shaped hole 15 of the second sealing plate 16 causes the connecting rod 12 to rotate the second sliding member 4 around the central axis of the first pipe body 1, aligning the negative pressure flow channel 34 on the first sliding member 3 with the corresponding negative pressure hole 101, and aligning the positive pressure channel 44 on the second sliding member 4 with the corresponding first positive pressure hole 102 and second positive pressure hole 201, thus adjusting the circumferential position of the flushing drainage. During adjustment, the second guide tube 7 is located in the second clearance groove 42 when moving axially and rotates into the third clearance groove 43 when moving circumferentially. Both the axial movement and circumferential rotation of the second sliding member 4 avoid interference with the second guide tube 7.

[0051] The first sliding member 3 includes a first base 31 and a plurality of first supports 32 connected to the first base 31. The second sliding member 4 includes a second base 41 and a plurality of second supports 45 connected to the second base 41. The negative pressure flow channels 34 extend within the first base 31 and the first supports 32, respectively. The first supports 32 are evenly distributed on the first base 31. The negative pressure generated by the negative pressure source is transmitted to the annular main flow channel within the first base 31 through the connecting pipe 11. The main flow channel evenly distributes the negative pressure to the branch flow channels within each of the first supports 32. During the movement of the first sliding member 3, the first supports 32 are in contact with the inner wall of the first pipe 1.

[0052] Reference Figure 3As shown, a first sub-channel 342 is provided axially inside the first base 31. One side of the first sub-channel 342 is connected to the connecting pipe 11 through a second sub-channel 341. The other side of the first sub-channel extends axially into the support body along the first sliding member 3 through multiple third sub-channels 343. The third sub-channel 343 is connected to the negative pressure hole 101 through multiple fourth sub-channels 344.

[0053] After the negative pressure source is activated, the generated negative pressure is transported to the second sub-channel 341 through the connecting pipe 11. Due to the inclined design and smooth inner wall of the second sub-channel 341, the negative pressure can quickly and with low resistance enter the first sub-channel 342. The negative pressure entering the first sub-channel 342 diffuses in a ring shape, forming a uniform negative pressure field within the first sub-channel 342, avoiding situations where the local negative pressure is too high or too low. The negative pressure within the first sub-channel 342 is distributed through multiple vertically connected third sub-channels 343. Each third sub-channel 343 receives a portion of the negative pressure. Because the third sub-channels 343 are evenly distributed, the negative pressure can be evenly distributed to each of the first supports 32. The third sub-channel 343 axially directs the negative pressure to the end of the first support 32, and then transmits it through the fourth sub-channel 344 to the corresponding negative pressure hole 101. The precise alignment of the fourth sub-channel 344 and the negative pressure hole 101 ensures that the negative pressure can directly act on the target area, generating stable suction to draw in and discharge waste liquid and impurities. In some embodiments, the connecting pipe 11 is fan-shaped and / or has two sets, thereby improving connection stability and increasing structural strength.

[0054] Reference Figure 2 As shown, the first sliding member 3 and the second sliding member 4 are respectively provided with a first positioning part at their ends, and the first end of the second tube body 2 is provided with a second positioning part 10. The first positioning part and the second positioning part 10 are arranged in a ring to increase the contact surface. At the same time, the second sliding member 4 can move along the axial direction. The shapes of the first positioning part and the second positioning part correspond to each other.

[0055] When adjusting the sliding parts, the operator moves the first sliding part 3 or the second sliding part 4 axially. When the sliding part moves to the target position, the first positioning part at its end aligns with the second positioning part 10 on the second pipe body 2. Under the action of thrust, the first positioning part embeds into the recess of the second positioning part 10. Since the shapes of the two are complementary, a stable positioning fit is formed, and a clear positioning feedback can be felt by hand to confirm that the adjustment is in place. After the positioning fit is completed, the negative pressure flow channel 34 on the first sliding part 3 is precisely aligned with the corresponding negative pressure hole 101, and the positive pressure channel 44 on the second sliding part 4 is precisely aligned with the corresponding positive pressure hole, ensuring that the medium can flow smoothly. When the position needs to be adjusted, the operator applies a pulling force to disengage the first positioning part from the second positioning part 10.

[0056] The outer wall of the second positioning part 10 is provided with a stepped surface 9, the stepped surface 9 is provided with an external thread, the end cap 5 is provided with an internal thread adapted to the external thread, and the first end of the first tube body 1 and the second tube body 2 is provided with a first sealing plate.

[0057] The internal thread of the end cap 5 is aligned with the external thread of the stepped surface 9 of the second positioning part 10. The end cap 5 is rotated, causing the internal and external threads to gradually engage. As the rotation continues, the end face of the end cap 5 gradually approaches the stepped surface 9 until they are fully engaged, forming a sealing structure that ensures the airtightness of the drug storage space. The drug is stored within the drug storage space formed by the end cap 5, the first sealing plate, the first tube 1, and the second tube 2. Disassembling the end cap 5 allows access to the drug storage space for replenishment, replacement, or cleaning. The periphery of the end cap 5 is flush with and smoothly transitions to the outer surface of the first tube 1.

[0058] The first sealing plate connects the first end of the first tube 1 and the first end of the second tube 2, enhancing the structural strength and rigidity of the tube ends and preventing deformation of the tube ends due to stress during installation, disassembly of the end cap 5, or other operations. This ensures the thread accuracy of the second positioning part 10 and the sealing performance of the end cap 5. Simultaneously, the first sealing plate, as the bottom of the drug storage space, provides a stable storage environment for the drug, preventing corrosion or contamination caused by direct contact between the drug and the tube ends.

[0059] The negative pressure hole 101 is provided with a first narrowing portion and a second narrowing portion on both sides, and a cutting portion is provided in a ring between the first narrowing portion and the second narrowing portion. The first sliding member 3 is provided with a cutting ring adapted to the first narrowing portion and capable of extending to the cutting portion. The cutting ring is provided on the periphery of the negative pressure hole 101.

[0060] During the drainage operation, the negative pressure orifice 101 generates suction under negative pressure, drawing in waste liquid and impurities from the target area. Impurities, along with the waste liquid, first pass through the second narrowing section. Due to the conical structure of the second narrowing section, the fluid velocity gradually increases, and the impurities are concentrated and guided towards the central area of ​​the negative pressure orifice 101. When the impurities pass through the cutting edge, they collide with it, and larger impurities are cut and broken into fine particles to prevent blockage.

[0061] During adjustment, the first sliding member 3 moves axially or rotates circumferentially, and its end-end cutting ring slides along the inner wall of the first narrowing section. The close contact between the cutting ring and the first narrowing section can scrape away impurities attached to the inner wall of the first narrowing section, preventing impurities from accumulating and causing the channel to narrow. The end of the cutting ring extending to the cutting edge will cut the impurities attached to the surface of the cutting edge. In conjunction with the auxiliary cutting edge of the cutting ring, it will perform secondary cutting on the blockage that is not completely broken up, such as clumps or agglomerates of substances such as blood clots, tissue fragments, fibrin, or purulent secretions, ensuring that the cutting edge always remains sharp and the cutting effect is stable.

[0062] After being cut and crushed, the impurities enter the negative pressure flow channel 34 along with the waste liquid through the first narrowing section. Since the first narrowing section also has an accelerating effect, it further increases the conveying speed of the impurities and prevents them from stagnating in the negative pressure hole 101. The sliding cleaning action of the cutting ring is carried out throughout the entire adjustment process. Even if no adjustment is made during the drainage process, the operator can periodically move the first sliding member 3 to clean the negative pressure hole 101 through the cutting ring, ensuring the long-term unobstructed flow channel.

[0063] The first and second subspaces are respectively connected to a first positive pressure source and a second positive pressure source. Based on the flushing requirements of the target area, the type and pressure parameters of the medium to be delivered to the first and second subspaces are determined. The corresponding media are injected into the storage modules of the first and second positive pressure sources, respectively. The output pressure and flow rate are set by adjusting valves, and the pressure monitoring instrument displays the pressure value in real time for easy adjustment by the operator. When the first positive pressure source is activated, its output medium enters the first subspace through connecting pipe 11. After being evenly distributed by the flow distributor within the first subspace, a portion of the medium is directly delivered to a specific location in the target area through the first conduit 6, achieving precise flushing along a fixed path; the other portion of the medium can be output through the corresponding positive pressure channel 44 and positive pressure orifice, achieving flushing along an adjustable path. Simultaneously, the second positive pressure source is activated, and its output medium enters the second subspace through connecting pipe 11. After being evenly distributed by the flow distributor, it is output to another location in the target area through the second conduit 7 or the corresponding positive pressure channel 44 and positive pressure orifice, achieving differentiated flushing.

[0064] When different areas of the target region require different flushing intensities, the pressures of the first and second positive pressure sources can be adjusted independently. For example, higher pressure can be used to flush heavily contaminated areas, while lower pressure can be used to flush sensitive tissues, avoiding tissue damage or insufficient flushing due to improper pressure. When different media need to be used in combination, ordinary flushing solution can be injected into the first positive pressure source, and medicated flushing solution can be injected into the second positive pressure source, achieving synergistic flushing and drug administration to improve the therapeutic effect. During the operation, the pressure and flow rate of the two positive pressure sources can be adjusted in real time according to the flushing effect to ensure optimal flushing effect. At the same time, the flushing position can be flexibly adjusted by adjusting the sliding parts and aligning the positive pressure channel 44 with the positive pressure orifice.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A flushing and drainage tube, characterized in that, include: The tube structure includes: a first tube, a second tube, a plurality of first conduits and a plurality of second conduits. The first tube is sleeved on the second tube. The first tube and the second tube form a space between them. The first and second conduits are configured such that one end is connected to the second tube and the other end passes through the first tube and is connected to the outside. The first tube has a plurality of negative pressure holes and the second tube is connected to a positive pressure source. An adjustment mechanism includes: a first sliding member and a connecting tube. The first sliding member is movably arranged along the length direction of the spacing space. One end of the connecting tube is connected to the first sliding member, and the other end of the connecting tube extends outside the spacing space and is connected to a negative pressure source. The first sliding member has a plurality of first clearance grooves that are respectively adapted to the first conduit along its axial direction. The first sliding member has a plurality of negative pressure channels. The input side of the plurality of negative pressure channels can be connected to a plurality of negative pressure holes. The negative pressure holes and the first conduit are staggered along the circumference of the first tube body. A cap is detachably mounted at the first end of the first tube body. The cap and the first tube body enclose a drug storage space that communicates with the second tube body. The cap is provided with multiple filter holes.

2. The flushing and drainage tube according to claim 1, characterized in that: The second tube is provided with a first partition, which and the second tube respectively enclose a first subspace and a second subspace. Two sets of second partitions are provided between the second tube and the first tube. The second tube, the first tube and the second partitions enclose a third subspace and a fourth subspace. The first sliding member is movably disposed in the third subspace, and a second sliding member is movably connected in the fourth subspace.

3. A flushing drainage tube according to claim 2, characterized in that: The first conduit and the second conduit are located in the first subspace and the second subspace, respectively. The first tube and the second tube are respectively provided with a first positive pressure hole and a second positive pressure hole that are radially corresponding. The second sliding member is provided with a positive pressure channel with both ends connected to the first positive pressure hole and the second positive pressure hole to form a second positive pressure flow channel. The second sliding member is provided with a second clearance groove that is adapted to move axially relative to the second conduit.

4. A flushing drainage tube according to claim 3, characterized in that: The second sliding member and the connecting pipe can move circumferentially along the first pipe body. The second end of the first pipe body and the second pipe body is provided with a second sealing plate. The second sealing plate has an oblong hole adapted to the moving path of the connecting pipe. The second sliding member has a third clearance groove adapted to the circumferential movement relative to the second guide tube. The third clearance groove is connected to the second clearance groove.

5. A flushing drainage tube according to claim 3, characterized in that: The first sliding member includes a first base and a plurality of first supports connected to the first base. The second sliding member includes a second base and a plurality of second supports connected to the second base. The negative pressure flow channel extends into the first base and the first supports respectively.

6. A flushing drainage tube according to claim 5, characterized in that: The first base has a first sub-flow channel axially formed inside. One side of the first sub-flow channel is connected to the connecting pipe through a second sub-flow channel. The other side of the first sub-flow channel extends into the support body along the first sliding member through multiple third sub-flow channels. The third sub-flow channels are connected to the negative pressure hole through multiple fourth sub-flow channels.

7. A flushing drainage tube according to claim 1, characterized in that: The first sliding member and the second sliding member are respectively provided with a first positioning part at their ends, and the first end of the second tube is provided with a second positioning part, and the shapes of the first positioning part and the second positioning part correspond to each other.

8. A flushing drainage tube according to claim 7, characterized in that: The outer wall of the second positioning part is provided with a stepped surface, the stepped surface is provided with an external thread, the end cap is provided with an internal thread adapted to the external thread, and the first end of the first tube and the second tube is provided with a first sealing plate.

9. A flushing drainage tube according to claim 1, characterized in that: The negative pressure hole is provided with a first narrowing portion and a second narrowing portion on both sides, and a cutting portion is provided in a ring between the first narrowing portion and the second narrowing portion. The first sliding member is provided with a cutting ring adapted to the first narrowing portion and capable of extending to the cutting portion. The cutting ring is provided on the periphery of the negative pressure hole.

10. A flushing drainage tube according to claim 2, characterized in that: The first subspace and the second subspace are respectively connected to the first positive pressure source and the second positive pressure source.

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