Drainage tube based on abdominal cavity infection control

Abstract

The invention relates to a drainage tube based on abdominal infection control. The drainage tube comprises a drainage tube body, a sleeve and a flushing tube. A connecting piece is arranged at the connecting end, and a drainage hole and a connecting cap are arranged at the inserting end. The front end of the drainage tube is sleeved with the sleeve, the connecting end is provided with a connecting block, the inserting end is conical, the side wall of the inserting end is provided with a plurality of through holes, and the diameters of the through holes are enlarged from outside to inside. The water outlet is located at the top end of the inserting end, and the water inlet end is located at the bottom end of the connecting block. Integration of flushing, drainage and dosing is achieved through the flushing tube and the infusion tube, blockage is prevented through the design of the through holes, the sleeve is provided with scale marks, the sizes of the drainage tube and the sleeve are optimized, and the drainage tube is suitable for different patients. The drainage tube effectively controls infection, improves drainage efficiency, promotes rehabilitation of a patient, reduces the use intensity of antibiotics (DDD) to a certain extent, and reduces the proportion of unplanned return to an operating room.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a drainage tube based on abdominal cavity infection control. Background Art

[0002] In modern medicine, abdominal infection is the most common surgical acute abdomen and a common postoperative complication. Draining intraperitoneal fluid is crucial for controlling infection and promoting patient recovery, especially in situations such as abdominal surgery, trauma, or inflammation. While traditional abdominal drainage tubes can drain intraperitoneal fluid to a certain extent, they still present numerous challenges in practical application and require urgent improvement.

[0003] First, the design of traditional drainage tubes is relatively simple, typically consisting of a tube inserted into the abdominal cavity and a drainage bag for collecting the accumulated fluid. This design can only passively drain the abdominal fluid through the siphon principle or negative pressure suction during the drainage process, and cannot effectively clean the infected wound in the abdominal cavity, leading to bacterial growth at the lesion site and making the abdominal infection difficult to control. In addition, the side walls of the drainage tube easily absorb fibrin and cellular debris in the abdominal cavity. These substances can clog the drainage holes, reduce drainage efficiency, or even completely block the drainage channel, affecting the drainage effect.

[0004] Secondly, traditional drainage tubes require cumbersome disinfection and connection procedures when replacing drainage bags, which can easily introduce bacteria and increase the risk of infection. Furthermore, the length and diameter of drainage tubes are typically fixed, making them difficult to adjust to the patient's specific needs, which limits their applicability.

[0005] Furthermore, traditional drainage tubes often feature straight holes with a fixed diameter, making them unable to automatically adjust the flow rate based on the properties and flow rate of the drainage fluid. During drainage, fibrin and cellular debris can easily clog the openings, resulting in poor drainage. Furthermore, traditional drainage tubes lack the ability to continuously monitor and intervene in the intra-abdominal environment, making it impossible to promptly detect and address potential infection risks. Summary of the Invention

[0006] The present invention aims to provide a drainage tube based on abdominal cavity infection control, which changes passive suction into active wound continuous flushing to solve the problem of low drainage efficiency of abdominal cavity infection in the existing drainage process.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drainage tube based on abdominal infection control, comprising a drainage tube, a sleeve and a flushing tube, both ends of the drainage tube are open, the drainage tube connecting end is fixedly connected to a connector, the drainage tube insertion end is provided with a plurality of drainage holes, the drainage tube side wall is fixedly connected to a connecting cap, the sleeve is sleeved on the outside of the drainage tube insertion end, the sleeve connecting end is fixedly connected to a connecting block that cooperates with the connecting cap, the sleeve insertion end side wall is provided with a plurality of through holes, the connecting block side wall is provided with an injection tube, the injection tube is connected to the inside of the sleeve, the outer wall of the sleeve is fixedly connected to a flushing tube, the flushing tube and the sleeve run in parallel, the water outlet end of the flushing tube is located at the sleeve insertion end, and the water inlet end of the flushing tube is located at the bottom end of the connecting block.

[0008] Preferably, the connector can be connected to a drainage bag or a suction device.

[0009] Preferably, the sleeve insertion end is conical, and the plurality of through holes are arranged within 15 cm of the sleeve insertion end at intervals of 1 cm. The plurality of through holes are distributed at 180°, with a 90° difference between adjacent layers of through holes, and the diameter of the through holes is 3 mm.

[0010] Preferably, the through hole has an aperture that gradually expands from the outside of the sleeve to the inside, and the inner wall of the sleeve is provided with an arc-shaped protrusion at the bottom end of the through hole.

[0011] Preferably, a scale mark is provided on the outside of the sleeve.

[0012] Preferably, the inner diameter of the drainage tube is 16 Fr, the outer diameter of the cannula is 24-32 Fr, and the outer diameter of the flushing tube is 8 Fr.

[0013] The principle and beneficial effects of this technical solution:

[0014] The present invention is provided with a flushing tube outside the sleeve of the drainage tube. After the drainage tube enters the abdominal cavity, the flushing tube will synchronously flush the abdominal infection wound surface passed through, and physiological saline or iodine water can be used as a flushing fluid. With the flow of the flushing fluid, the dirt and bacteria in the lesion position can be efficiently removed, thereby significantly reducing the chance of bacterial growth. During use, the connecting end of the drainage tube will be connected to the suction device, and the flushing fluid will be attracted in time by the suction tube after completing the flushing task. This process will innovate the previous passive drainage mode into active negative pressure drainage. This active negative pressure drainage is not a short-term operation, but can achieve continuous 24-hour flushing, thereby effectively reducing tissue edema, eliminating inflammation, and creating more favorable conditions for the patient's recovery.

[0015] When necessary, the infusion tube can precisely deliver liquid medicine into the abdominal cavity, which then flows out through the through-holes in the cannula's sidewall, further preventing infection and maintaining a clean environment within the abdominal cavity. Overall, this design successfully integrates drainage, cleaning, and medication, greatly improving the efficiency of drainage tube use and providing a more comprehensive and efficient solution for the treatment of abdominal infections.

[0016] The through-holes in the cannula's sidewalls feature a gradually increasing aperture from the outside inward, increasing flow velocity while maintaining constant flow rate, providing greater impact to the medication. As the medication flows out through the through-holes, it effectively dislodges any fibrin and cellular debris that may be blocking the orifice, preventing blockage and thus affecting the drainage rate. Furthermore, the curved protrusions further enhance the clearing effect of blockages, ensuring unobstructed flow through the through-holes.

[0017] The connection end of the drainage tube is fixed with a connector, which can be used to connect a drainage bag or aspirator as needed to meet the suction requirements of different degrees of illness. A scale mark is set on the outside of the cannula to facilitate medical staff to accurately control the insertion depth when inserting the drainage tube, avoiding affecting the drainage effect due to insertion too deep or too shallow. At the same time, the inner diameter of the drainage tube is 16Fr, the outer diameter of the cannula is designed to be 24-32Fr, and the outer diameter of the flushing tube is 8Fr. This size range not only ensures the drainage efficiency of the drainage tube, but also reduces damage to the abdominal cavity tissue.

[0018] Through the dual functions of the flushing tube and the infusion tube, passive suction is transformed into active flushing. The present invention can effectively remove dirt and bacteria in the abdominal cavity and control abdominal infection. This design significantly reduces the risk of spread of abdominal infection, improves the patient's recovery speed, and reduces the use of antibiotics. The special design of the through hole and the setting of the arc-shaped protrusion effectively prevent the orifice from being blocked, ensuring the smooth discharge of the drainage fluid. Even if fibrin and cell debris accumulate during the drainage process, they can be removed by the impact of the liquid medicine, thereby maintaining a stable drainage rate. The optimized design of the outer diameter of the cannula and the setting of the scale mark make the present invention suitable for patients of different body shapes and conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a drainage tube based on abdominal infection control provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the main structure of a drainage tube based on abdominal infection control provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of part A of a drainage tube based on abdominal infection control provided by an embodiment of the present invention;

[0022] Figure 4A schematic cross-sectional view of a main tube of a drainage tube for controlling abdominal infection provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of part B of a drainage tube based on abdominal infection control provided by an embodiment of the present invention;

[0024] In the figure: 1. Drainage tube; 2. Connector; 3. Sleeve; 4. Drainage hole; 5. Through hole; 6. Connecting cap; 7. Connecting block; 8. Injection tube; 9. Flushing tube; 10. Arc-shaped protrusion; 11. Fixing sleeve; 12. Connecting strip; 13. Sealing cap. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0026] Example:

[0027] like Figure 1-Figure 5 As shown, the present invention provides a drainage tube for peritoneal infection control, comprising a drainage tube 1, a cannula 3, and an irrigation tube 9. The drainage tube 1 is open at both ends, with a connector 2 fixedly connected to the connecting end for connection to a drainage bag or a suction device. The insertion end of the drainage tube 1 is provided with a plurality of drainage holes 4 for draining fluid from the peritoneal cavity.

[0028] The sleeve 3 is sleeved on the outside of the insertion end of the drainage tube 1, and its connecting end is fixedly connected to a connecting block 7, which cooperates with the connecting cap 6. The connecting cap 6 and the connecting block 7 are connected by a threaded connection to ensure that the sleeve 3 is firmly connected to the drainage tube 1. The top of the insertion end of the sleeve 3 is conical, which is convenient for insertion into the abdominal cavity. Its side wall is provided with a plurality of through holes 5, with two through holes 5 set every 1 cm, distributed within 15 cm of the sleeve insertion end, distributed at 180°, with a difference of 90° between adjacent layers of through holes, and a diameter of 3 mm. The aperture of the through hole 5 gradually expands from the outside of the sleeve to the inside, and the inner wall of the sleeve is provided with an arc-shaped protrusion 10 at the bottom of the through hole orifice to prevent fibrin and cell debris from clogging the through hole.

[0029] An injection tube 8 is provided on the side wall of the connecting block 7. This tube communicates with the interior of the cannula 3 and is used to deliver liquid medicine into the abdominal cavity. A flushing tube 9 is fixedly connected to the outer wall of the cannula 3 and runs parallel to the cannula 3. Its outlet is located at the cannula insertion end, and its inlet is located at the bottom end of the connecting block 7. This is used to flush the abdominal cavity during drainage.

[0030] The length of cannula 3 is typically designed to be 15cm or 25cm depending on the environment. A scale marking is provided on the outside to facilitate accurate insertion depth control by medical personnel. The inner diameter of drainage tube 1 is 16Fr, the outer diameter of cannula 3 is 24-32Fr, and the outer diameter of irrigation tube 9 is 8Fr. This design ensures drainage efficiency while minimizing damage to abdominal tissue.

[0031] In actual use, medical staff select the appropriate length of the drainage tube according to the patient's abdominal cavity depth and lesion location, and connect the drainage tube to the drainage bag or suction device according to needs through the connector 2. When the patient's affected part has no inflammation or the inflammation is relatively mild, directly connecting the drainage bag can meet the needs. The drainage tube 1 is inserted into the patient's abdominal cavity, and the tapered structure of the sleeve 3 is used to ensure smooth insertion, and the insertion depth is accurately controlled by the scale mark so that the drainage hole 4 is located at the lesion location. Physiological saline is injected through the flushing tube 9 to flush the lesion location to remove dirt and bacteria, and then the flushing fluid is sucked from the through hole 5 through the suction device to prevent the flushing fluid from overflowing in the abdominal cavity. When the patient's affected part is severely edematous and has more serious inflammation, it requires a long time to clean. Connect the suction device and perform active negative pressure suction. The cleaning fluid can be input for a long time to clean the wound, which can effectively reduce tissue edema and eliminate inflammation.

[0032] When liquid medicine needs to be delivered into the abdominal cavity, the liquid medicine is delivered into the abdominal cavity through the infusion tube 8, and the liquid medicine flows out from the through hole 5 to act on the lesion, further preventing infection and maintaining a clean environment in the abdominal cavity.

[0033] During drainage, the accumulated fluid in the abdominal cavity flows through drainage hole 4 into drainage tube 1 and then into a drainage bag or suction device. The special design of through hole 5 and the function of arc-shaped protrusion 10 ensure that through hole 5 is unobstructed. Even if fibrin and cell debris accumulate, the impact of the liquid medicine can remove them, maintaining a stable drainage rate.

[0034] Through the above-described design and use method, the drainage tube of the present invention can effectively remove dirt and bacteria from the abdominal cavity while continuously delivering liquid medicine, preventing the occurrence of infection, significantly reducing the risk of abdominal infection, and improving the patient's recovery speed. The special design of the through hole and the provision of the arc-shaped protrusion effectively prevent the orifice from clogging, ensuring the smooth discharge of the drainage fluid. The optimized design of the cannula's outer diameter and the provision of scale markings make the present invention suitable for patients of different body shapes and conditions.

[0035] Specific steps:

[0036] When performing abdominal drainage operation, medical staff first select the appropriate drainage tube length according to the patient's abdominal cavity depth. The drainage tube is connected to the drainage bag or suction device through the specific disease, and the drainage tube 1 is inserted into the patient's abdominal cavity. The conical structure ensures better insertion of the sleeve 3. The insertion depth is accurately controlled by the scale marking on the sleeve 3 to ensure that the drainage hole 4 of the drainage tube 1 is located at the lesion position in the abdominal cavity.

[0037] After the drainage tube is inserted into the abdominal cavity, a cleaning fluid is injected through flushing tube 9 to flush the affected area within the abdominal cavity, effectively removing dirt and bacteria. The cleaning fluid is then drawn in through through-hole 5, preventing it from overflowing. When medication is needed, it is delivered into the abdominal cavity through infusion tube 8. The medication flows out through through-hole 5 and acts on the affected area, further preventing infection and maintaining a clean environment within the abdominal cavity.

[0038] During drainage, the accumulated fluid in the abdominal cavity flows through drainage hole 4 into drainage tube 1 and then into a drainage bag or suction device. The special design of through hole 5 and the function of arc-shaped protrusion 10 ensure that through hole 5 is unobstructed. Even if fibrin and cell debris accumulate, the impact of the liquid medicine can remove them, maintaining a stable drainage rate.

[0039] The above is only an embodiment of the present invention, and common knowledge such as the specific technical solutions or characteristics in the solution is not described in detail here. For those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A drainage tube based on abdominal infection control, characterized by: It includes a drainage tube, a sleeve and a flushing tube, both ends of the drainage tube are open, the drainage tube connecting end is fixedly connected to a connecting piece, the drainage tube insertion end is provided with a plurality of drainage holes, the drainage tube side wall is fixedly connected to a connecting cap, the sleeve is sleeved on the outside of the drainage tube insertion end, the sleeve connecting end is fixedly connected to a connecting block that cooperates with the connecting cap, the sleeve insertion end side wall is provided with a plurality of through holes, the connecting block side wall is provided with an injection tube, the injection tube is connected to the inside of the sleeve, the outer wall of the sleeve is fixedly connected to a flushing tube, the flushing tube and the sleeve run in parallel, the water outlet end of the flushing tube is located at the sleeve insertion end, and the water inlet end of the flushing tube is located at the bottom end of the connecting block.

2. The drainage tube for controlling abdominal infection according to claim 1, characterized in that: The connector can be connected to a drainage bag or a suction device.

3. The drainage tube for controlling abdominal infection according to claim 1, characterized in that: The insertion end of the sleeve is conical, and the plurality of through holes are arranged within 15 cm of the sleeve insertion end at intervals of 1 cm. The plurality of through holes are distributed at 180°, and the through holes in adjacent layers differ by 90°. The diameter of the through holes is 3 mm.

4. The drainage tube for controlling abdominal infection according to claim 1, characterized in that: The through hole has an aperture that gradually expands from the outside of the sleeve to the inside, and the inner wall of the sleeve is provided with an arc-shaped protrusion at the bottom end of the through hole.

5. The drainage tube for controlling abdominal infection according to claim 1, characterized in that: The outer side of the sleeve is provided with scale marks.

6. The drainage tube for controlling abdominal infection according to claim 1, characterized in that: The inner diameter of the drainage tube is 16Fr, the outer diameter of the cannula is 24-32Fr, and the outer diameter of the flushing tube is 8Fr.

Images