Drainage device

Abstract

This disclosure relates to the field of medical devices, specifically to a drainage device. The drainage device includes a first drainage tube, a second drainage tube, and a negative pressure drainage assembly connected in sequence. Along the direction near the second drainage tube, the first drainage tube has a first segment, a second segment, and a third segment connected in sequence. The first segment has a drainage port, and a fixing balloon is fitted onto the outer wall of the second segment. Along the direction near the second drainage tube, the wall thickness of at least the third segment gradually increases. This drainage device can reduce the probability of bending and improve drainage efficiency.

Description

Technical Field

[0001] This disclosure relates to the field of medical device technology, and more specifically, to a drainage device. Background Technology

[0002] The drainage devices in related technologies have poor drainage effects.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a drainage device that can reduce the probability of bending and improve the efficiency of drainage.

[0005] According to one aspect of this disclosure, a drainage device is provided, comprising a first drainage tube, a second drainage tube, and a negative pressure drainage assembly connected in sequence; Along the direction close to the second drainage tube, the first drainage tube has a first tube segment, a second tube segment, and a third tube segment connected in sequence. The first tube segment has a drainage port, and the outer wall of the second tube segment is fitted with a fixing balloon. Along the direction close to the second drainage tube, the wall thickness of at least the third tube segment gradually increases.

[0006] In one embodiment of this disclosure, the wall thickness difference between the two ends of the third pipe section is not greater than 0.9 cm and not less than 0.05 cm.

[0007] In one embodiment of this disclosure, the first drainage tube is arc-shaped, with a central angle of 30 to 45 degrees and a length of 12 cm to 15 cm.

[0008] In one embodiment of this disclosure, the first pipe segment includes a connecting segment and an inlet segment; the connecting segment is connected to the second pipe segment; The inlet section has a trumpet-shaped structure, and the small-diameter end of the inlet section is connected to the connecting section; the large-diameter end of the inlet section forms the drainage port.

[0009] In one embodiment of this disclosure, at least one of the sidewalls of the inlet section and the connecting section is further provided with at least one of the drainage ports.

[0010] In one embodiment of this disclosure, the first pipe segment has a sealing segment, an inlet segment, and a connecting segment connected in sequence; The connecting section is located between the inlet section and the second pipe section; The inlet section is funnel-shaped, and the small-diameter end of the inlet section is connected to the second pipe section. The sealing section is located at the large-diameter end of the inlet section, and the pipe wall of the inlet section is provided with multiple drainage ports.

[0011] In one embodiment of this disclosure, a pressure-temperature detection unit is provided on the inner wall of the first pipe section; The connecting wire of the pressure-temperature detection unit is embedded in the wall of the first drainage tube and the wall of the second drainage tube. Its detection end is located on the outer wall of the first drainage tube. The connecting wire passes through the side of the second drainage tube near the negative pressure drainage component and is used to connect to an external control device.

[0012] In one embodiment of this disclosure, the drainage device further includes at least one drainage conduit; The guide tube is embedded in the wall of the first drainage tube and the wall of the second drainage tube. One end of the guide tube is open towards the outside of the first drainage tube. The other end of the guide tube extends out from the side of the second drainage tube near the negative pressure drainage component and is used to connect to an external supply device.

[0013] In one embodiment of this disclosure, the negative pressure drainage assembly includes a negative pressure drainer and a memory; The first end of the negative pressure drainage device is detachably connected to the side of the second drainage tube away from the first drainage tube, the second end of the negative pressure drainage device is detachably connected to the first end of the memory, the second end of the memory is provided with a first on / off structure, and the second end of the negative pressure drainage device is provided with a second on / off structure.

[0014] In one embodiment of this disclosure, the drainage device further includes an anti-blocking rod; the anti-blocking rod is used to clear blockages by entering from the side of the second drainage tube away from the first drainage tube when at least one of the first and second drainage tubes is blocked; The anti-blocking rod has a first anti-blocking section and a second anti-blocking section connected together, wherein the hardness of the first anti-blocking section is less than the hardness of the second anti-blocking section.

[0015] The beneficial effects of this disclosure include: 1. The drainage device in this disclosure limits the wall thickness of the third pipe section to gradually increase, which can increase the bending resistance of the third pipe section, reduce the possibility of bending at this point, reduce the possibility of blockage, and improve the drainage efficiency.

[0016] 2. In the drainage device disclosed herein, the central angle of the first drainage tube is 30-45 degrees and the length is 12 cm-15 cm, which conforms to the biomimetic curve of the physiological structure of rectosacral dilatation. In this way, the first drainage tube can fit closely to the physiological structure of rectosacral dilatation, thereby improving the fit, drainage efficiency, and patient comfort.

[0017] 3. The drainage device in this disclosure is equipped with a pressure-temperature detection unit, which can detect the temperature and pressure in the abdominal cavity and rectum, providing early warning for problems such as abdominal hypertension.

[0018] 4. The drainage device in this disclosure is equipped with a drainage pipe, which can be used to achieve functions such as anti-clogging flushing, enema, and rectal administration.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0021] Figure 1 This is a schematic diagram of the drainage device in one embodiment of the present disclosure.

[0022] Figure 2 This is a schematic diagram of the drainage device in one embodiment of the present disclosure.

[0023] Figure 3 This is a schematic diagram of the structure of the first drainage tube in one embodiment of the present disclosure.

[0024] Figure 4 This is a schematic diagram of the structure of the first drainage tube in one embodiment of the present disclosure.

[0025] Figure 5 This is a schematic diagram of the structure of the first drainage tube in one embodiment of the present disclosure.

[0026] Figure 6 This is a schematic diagram of the structure of the first drainage tube in one embodiment of the present disclosure.

[0027] Figure 7 This is a schematic diagram of the anti-blocking rod in one embodiment of the present disclosure.

[0028] Explanation of reference numerals in the attached figures: 1. First drainage tube; 11. First tube segment; 111. Inlet segment; 112. Connecting segment; 113. Drainage port; 12. Second tube segment; 13. Third tube segment; 2. Fixing balloon; 3. Second drainage tube; 4. Negative pressure drainage device; 5. Storage device; 6. Second shut-off structure; 7. First shut-off structure; 8. Pressure-temperature detection unit; 9. Drainage pipeline; 10. Filling medium device; 14. Anti-clogging rod; 141. First anti-clogging section; 142. Second anti-clogging section. Detailed Implementation

[0029] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0030] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0031] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0032] The drainage devices in related technologies are prone to blockage and bending during use, resulting in poor drainage effects.

[0033] To address the aforementioned problem, the applicant analyzed the drainage device in the relevant technology and found that it was caused by a bend in the first drainage tube.

[0034] To address the aforementioned problems, this disclosure provides a drainage device. This drainage device can be used in scenarios such as anal defecation and gas expulsion, and can achieve a good drainage effect.

[0035] Optional, see Figure 1 , Figure 2 and Figure 7 The drainage device includes a first drainage tube 1, a second drainage tube 3, a negative pressure drainage assembly, and an anti-blocking rod 14; The first drainage tube 1, the second drainage tube 3, and the negative pressure drainage assembly are connected in sequence. The first drainage tube 1 is inserted into the body, the second drainage tube 3 is located outside the body, and the negative pressure drainage assembly is used to realize functions such as defecation and gas expulsion using negative pressure. It can also collect intestinal contents during use. The anti-blocking rod 14 is used to clear blockages when at least one of the first drainage tube 1 and the second drainage tube 3 is blocked.

[0036] In one embodiment of this disclosure, the first drainage tube 1 has a first tube segment 11, a second tube segment 12 and a third tube segment 13 connected in sequence, wherein the third tube segment 13 is connected to the second drainage tube 3.

[0037] In this embodiment, a drainage port 113 is provided on the first tube section 11, which is used to allow intestinal contents to enter the drainage device from the drainage port 113 under the action of the negative pressure drainage component. The contents can be gas, liquid, solid, etc.

[0038] In the first embodiment, see Figure 2 and Figure 3 The first pipe section 11 includes an inlet section 111 and a connecting section 112, wherein the connecting section 112 is connected to the second pipe section 12. It can be understood that the inlet section 111, the connecting section 112, and the second pipe section 12 are connected sequentially. In this embodiment, the inlet section 111 has a funnel-shaped structure, and the small-diameter end of the inlet section 111 is connected to the connecting section 112, while the large-diameter end of the inlet section 111 serves as a drainage port 113. In this disclosure, setting the inlet section 111 to a funnel shape increases the area of ​​the drainage port 113, making it easier for the contents to enter the drainage device and accelerating the drainage efficiency.

[0039] In this embodiment, the pipe wall of the first pipe section 11 also has at least one drainage port 113 (wherein, the drainage port 113 may be located in the inlet section 111, the connecting section 112, or both the inlet section 111 and the connecting section 112). It is understood that the drainage port 113 has a different opening direction than the large-diameter end of the inlet section 111. By increasing the number of drainage ports 113, this disclosure can further increase the total area of ​​the drainage ports 113, making it easier for contents located on the side of the first drainage pipe 1 to enter the drainage device and accelerating the drainage efficiency.

[0040] In one example, the sidewall of the first pipe section 11 has one drain port 113, two drain ports 113, three drain ports 113, etc., which are not limited in this disclosure.

[0041] In the second implementation, see Figure 1 , Figure 4 and Figure 5 The first pipe section 11 has a sealing section 114, an inlet section 111, and a connecting section 112 connected in sequence. The connecting section 112 is located between the inlet section 111 and the second pipe section 12 (the connecting section 112 is connected to the second pipe section 12). The inlet section 111 is funnel-shaped, and its small-diameter end is connected to the second pipe section 12. The sealing section 114 is located at the large-diameter end of the inlet section 111, and the pipe wall of the inlet section 111 is provided with multiple drainage ports 113. In this embodiment, the sealing section 114 is provided to prevent the anti-blocking rod 14 from penetrating the first drainage pipe 1 and damaging organs such as the intestinal wall when using the anti-blocking rod 14, thereby improving the safety of the drainage device.

[0042] In one embodiment of this disclosure, the inlet segment 111 and the sealing segment 114 can be made of soft silicone with a Shore hardness of 30A-40A. The outer edges are rounded to avoid damage to the rectum, improving operational safety, and the radius of the rounded corners at each edge is not less than 0.3cm. In one example, the Shore hardness of the inlet segment 111 and the sealing segment 114 can be 30A, 32A, 34A, 35A, 36A, 38A, 40A, etc. In one example, the radius of the rounded corners at each edge can be 0.2cm.

[0043] In one example of this implementation, the blocking segment 114 may be planar. In other examples, see... Figure 5 The sealing section 114 connects with the inlet section 111 to form a mushroom-shaped structure. It can be understood that the mushroom-shaped structure here refers to a structure whose diameter gradually decreases from the middle to both ends.

[0044] In another example of this implementation, see Figure 5 The blocking section 114 has a positioning groove extending away from the inlet section 111. This positioning groove can be used to position and fix the anti-blocking rod 14 to prevent it from moving during use and affecting the unblocking effect.

[0045] In one embodiment of this disclosure, multiple drainage ports 113 may also be provided on the connecting section 112.

[0046] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 1 and Figure 2 The second pipe section 12 is fitted with a fixed balloon 2 on its outer wall; the fixed balloon 2 is connected to a filling medium device 10.

[0047] In this embodiment, the fixation balloon 2 can be an inflatable balloon or a water-filled balloon. The fixation balloon 2 is connected to the filling medium device 10 via a filling medium pipe. In one example, the filling medium pipe is located outside the first drainage tube 1. In another example, the filling medium pipe is embedded inside the first drainage tube 1, with one end passing through the first drainage tube 1 and communicating with the fixation balloon 2, and the other end passing through the first drainage tube 1 and communicating with the filling medium device 10. When using the drainage device, the fixation balloon 2 provided in this disclosure can be inflated by inflating it with air or water, sealing the gap between the rectum / anus and the first drainage tube 1, preventing fecal leakage, providing fixation, reducing the risk of slippage, and improving operational safety.

[0048] In this embodiment, the outer wall of the fixation balloon 2 has an anti-slip structure, which can increase the friction between the fixation balloon 2 and the rectal wall, further ensuring the fixation effect and preventing slippage. In one example, the anti-slip structure can be a diamond-shaped mesh structure, etc., and this disclosure does not impose any limitations.

[0049] In this embodiment, the material of the fixation balloon 2 can be medical-grade silicone, and the wall thickness of the fixation balloon 2 can be 0.05 cm. After inflation, the diameter of the fixation balloon 2 can reach 3 cm to 4 cm, and the diameter of the filling medium channel can be 0.15 cm.

[0050] In one embodiment of this disclosure, a 0.05cm thick medical silicone membrane can be thermoformed into a ring-shaped fixation balloon 2 (1.5cm in diameter when not inflated). The surface of the fixation balloon 2 can be molded with a 0.1cm deep anti-slip structure (diamond grid structure with a grid spacing of 0.5cm) to enhance the friction with the rectal wall. The fixation balloon 2 is fixed to the second tube segment 12 and connected to the filling medium device through the filling medium pipe embedded in the first drainage tube. The corresponding area of ​​the filling medium pipe and the first drainage tube is integrally injection molded to avoid leakage.

[0051] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 1 and Figure 6The third pipe segment 13 has a first end and a second end. The first end of the third pipe segment 13 is connected to the second pipe segment 12, and the second end of the third pipe segment 13 is connected to the second drainage pipe 3. Along the direction close to the second drainage pipe 3, the wall thickness of at least the third pipe segment 13 gradually increases. In this embodiment, the wall thickness difference between the two ends of the third pipe segment 13 is not greater than 0.9 cm and not less than 0.05 cm. For example, the wall thickness difference is 0.9 cm, 0.7 cm, 0.6 cm, 0.5 cm, 0.3 cm, 0.2 cm, 0.1 cm, 0.09 cm, 0.06 cm, 0.05 cm, etc. In this disclosure, the third tube segment 13 is located at the junction of the body and the external environment during use. This location is prone to bending, which can affect the drainage efficiency and cause blockage of the drainage device. In this disclosure, the wall thickness of the third tube segment 13 is specifically designed, limiting the wall thickness of the third tube segment 13 to gradually increase along the direction close to the second drainage tube 3. This can increase the bending resistance of the third tube segment 13. In this way, the closer the third tube segment 13 is to the second drainage tube 3, the better its bending resistance and the less likely it is to bend. In addition, it can also ensure the flexibility of the third tube segment 13 located in the body and avoid damage to the rectum, etc.

[0052] In this embodiment, by setting a stepped transition in wall thickness, the third pipe section 13 can be free of creases when the bending angle is no greater than 120 degrees. This ensures smooth drainage and guarantees drainage effect and efficiency.

[0053] In this embodiment, the wall thickness of the first end of the third pipe section 13 is 0.15 cm, and the wall thickness of the second end can be 0.2 cm.

[0054] In one embodiment of this disclosure, the lumen ratio of the first drainage tube 1 is not less than 80%, thus allowing more contents to pass through. Here, the lumen ratio refers to the ratio of the inner diameter to the outer diameter. For example, the lumen ratio of the first drainage tube 1 is 80%, 82%, 84%, 86%, 88%, etc.

[0055] In one embodiment of this disclosure, the inner wall of the first drainage tube 1 is coated with a lubricating hydrophobic coating. This reduces the adhesion of contents by lowering surface tension, thereby reducing the risk of blockage. In this example, the lubricating hydrophobic coating can be made of polytetrafluoroethylene (PTFE), and its thickness is 5 μm-10 μm, for example, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, etc. Of course, the lubricating hydrophobic coating can also be made of other materials not shown.

[0056] In this embodiment, the wall thickness of the first tube segment 11 and the wall thickness of the second tube segment 12 are equal to the wall thickness of the first end of the third tube segment 13. This ensures the flexibility of the first drainage tube 1 located within the body, preventing damage to the rectum or other structures. In this disclosure, any error within ±10% is considered equal.

[0057] In one embodiment of this disclosure, the first drainage tube 1 is arc-shaped, and the central angle corresponding to the arc segment is 30 degrees to 45 degrees. For example, the central angle corresponding to the arc segment is 30 degrees, 33 degrees, 35 degrees, 38 degrees, 40 degrees, 42.6 degrees, 45 degrees, etc.

[0058] In this embodiment, the length of the arc-shaped segment is 12cm-15cm. For example, the length of the arc-shaped segment is 12cm, 12.5cm, 13.6cm, 14.1cm, 14.8cm, 15cm, etc. It can be understood that the first pipe segment 11, the second pipe segment 12, and the third pipe segment 13 are all arc-shaped.

[0059] In one embodiment of this disclosure, the length of the first pipe segment 11 can be 5cm-8cm, depending on actual needs. In one example of this disclosure, the length of the first pipe segment 11 can be 5cm, the length of the second pipe segment 12 can be 3cm, and the length of the third pipe segment 13 can be 4cm.

[0060] In this disclosure, the central angle of the first drainage tube 1 is set to 30 to 45 degrees, which conforms to the biomimetic curve of the physiological structure of rectosacral dilatation. In this way, the first drainage tube 1 can fit closely to the physiological structure of rectosacral dilatation, thereby improving adaptability, drainage efficiency, and patient comfort. In addition, according to the size of the rectum, this disclosure sets the length of the first drainage tube 1 to 12cm-15cm, further conforming to the physiological structure of the rectum, thereby improving adaptability and drainage efficiency.

[0061] In one embodiment of this disclosure, the outer wall of the first drainage tube 1 is provided with a scale mark. This allows for accurate determination of the insertion depth of the first drainage tube 1 into the body, preventing over-insertion or under-insertion that could lead to low drainage efficiency. In this embodiment, the accuracy of the scale mark can reach ±0.1 cm, facilitating precise control of the insertion depth.

[0062] In one embodiment of this disclosure, the diameter of the first drainage tube 1 is 1cm-2cm, for example, 1cm, 1.2cm, 1.4cm, 1.5cm, 1.6cm, 1.8cm, 2cm, etc. The diameter of the first drainage tube 1 can be selected according to requirements.

[0063] In one embodiment of this disclosure, apart from the inlet section 111 and the sealing section 114, the other areas of the first drainage tube 1 can be made of medical-grade high-elastic polyurethane with a Shore hardness of 55D-65D. Of course, other materials not shown can also be used, but must meet the requirements of medical devices. In one example, the first drainage tube 1 is made of medical-grade high-elastic polyurethane with a Shore hardness of 60D.

[0064] In this disclosure, the inlet section 111 and the blocking section 114 in the first drainage tube are made of materials with lower hardness and softer material to avoid damage to the rectal wall; while the remaining areas are made of materials with higher hardness to avoid deformation caused by the pressure of the fixing balloon 2 during use.

[0065] In one embodiment of this disclosure, the first drainage tube 1 can be prepared by injection molding. During the molding process, the central angle of the biomimetic curve (e.g., 38°) is precisely controlled by the mold to ensure that it conforms to the physiological shape of human rectosacral dilatation. The diameter of the first drainage tube 1 is strictly controlled, and the lumen ratio is controlled to be 82% to ensure that the channel of the first drainage tube 1 is unobstructed. Gradient injection molding is used to achieve a tube wall thickness gradient of 0.2 cm at the second end and 0.15 cm at the first end, which enhances the bending resistance. The inner wall is coated with an 8 μm thick polytetrafluoroethylene lubricating hydrophobic coating by spraying. After spraying, it is cured at 120°C for 2 hours to ensure the adhesion of the coating and reduce the risk of intestinal contents adhesion.

[0066] Based on ultra-soft medical silicone, the inlet section (or inlet section and sealing section) is prepared by injection molding. The size can be set according to the requirements. After molding, it is polished to ensure that the surface is smooth and burr-free, and the edges need to be rounded to avoid damaging the rectal mucosa.

[0067] Laser engraving is used to mark the axial scale on the surface of the first drainage tube 1. Each scale is 1cm wide, the scale line width is 0.2mm, the accuracy is ±0.1cm, and the scale color is medical-grade blue for easy identification during surgery. The engraving depth is 0.05mm to avoid wear.

[0068] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 4A pressure-temperature detection unit 8 is provided on the inner wall of the first tube segment 11. It can be understood that the pressure-temperature detection unit 8 is located on the side of the fixed balloon 2 away from the second drainage tube 3 (the pressure-temperature detection unit 8 can be located in at least one of the connecting segment 112 and the inlet segment 111). The connecting wire 81 of the pressure-temperature detection unit 8 is embedded within the walls of the first drainage tube 1 and the second drainage tube 3, and extends out of the second drainage tube 3 from the side near the negative pressure drainage component for connection to an external control device. The detection end of the pressure-temperature detection unit 8 is located on the outer wall of the first drainage tube 1. In other words, the detection end of the pressure-temperature detection unit 8 is fixed to the outer wall of the first tube segment 11, and the connecting wire 81 of the pressure-temperature detection unit 8 is embedded within the walls of the first drainage tube 1 and the second drainage tube 3, and extends out from the side of the second drainage tube 3 near the negative pressure drainage component to connect to the external control device. In this disclosure, the pressure-temperature detection unit 8 is configured to detect temperature and pressure, wherein the temperature can be rectal temperature and the pressure can be rectal and abdominal pressure.

[0069] In one example, the pressure-temperature detection unit 8 can be an integrated structure that can detect both pressure and temperature, thus simplifying the structure.

[0070] In another example, the pressure-temperature detection unit 8 may include independently configured pressure and temperature detection probes. Both probes have their detection ends fixed to the outer wall of the first tube segment 11, flush with the outer wall to prevent damage to the intestine. A connecting wire 81 is embedded within the walls of the first drainage tube 1 and the second drainage tube 3, and extends from the side of the second drainage tube 3 closest to the negative pressure drainage assembly, connecting to an external control device. The temperature detection probe can correspond to a sensitive area for rectal temperature detection, and the pressure detection probe can correspond to a priority area for abdominal pressure detection. This disclosure can provide early warning for problems such as abdominal hypertension based on the detected temperature and pressure, and can be used in conjunction with the negative pressure drainage assembly to facilitate the adjustment of the negative pressure of the assembly.

[0071] In one embodiment of this disclosure, the drainage device may further include at least one guide tube 9, which is embedded within the first drainage tube 1 and the second drainage tube 3. One end of the guide tube 9 is fixed to the inner wall of the first tube segment 11 and opens towards the outer wall of the first tube segment 11 (that is, the medium can be directly injected into the intestine through the guide tube; the guide tube 9 can be used for drug administration, enema, flushing, lubricant injection, etc.). The distance between one end of the guide tube 9 and the end of the first drainage tube 1 away from the second drainage tube 3 is 2 cm to 3 cm. This position corresponds to the rectal drug administration sensitive area, the intestinal fluid diffusion optimization area, etc., and drug administration, enema, flushing, lubricant injection, etc., are performed at this location. The other end of the guide tube 9 extends out of the second drainage tube 3 and is placed outside the second drainage tube 3 for connecting to an external supply device. The guide tube 9 can be used for flushing, rectal drug administration, etc. When the guide tube 9 is used for flushing and lubricant injection, anti-clogging flushing can be achieved through the synergistic effect of pulsed water flow and lubricant.

[0072] In one embodiment, the number of drainage tubes 9 is one. Of course, in other embodiments, the number of drainage tubes 9 can also be two, three, etc. When the number of drainage tubes 9 is multiple, drainage, drug administration, enema, flushing, etc. can be coordinated, reducing the cumbersome procedures of operating multiple devices.

[0073] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 1 and Figure 2 The negative pressure drainage assembly includes a negative pressure drainer 4 and a storage device 5; the negative pressure drainer 4 is used to aspirate the contents of the rectum through the principle of negative pressure; the first end of the negative pressure drainer 4 is detachably connected to the side of the second drainage tube 3 away from the first drainage tube 1, the second end of the negative pressure drainer 4 is detachably connected to the first end of the storage device 5, the second end of the storage device 5 is provided with a first shut-off structure 7; the second end of the negative pressure drainer 4 is provided with a second shut-off structure 6.

[0074] The connection between the negative pressure drainage device and the memory, as well as the connection between the negative pressure drainage device and the second tube section, are both made through connectors. The connectors only need to meet the requirements for a sealed connection, such as a standard Luer-lock connector.

[0075] Among them, the first shut-off structure 7 and the second shut-off structure 6 can realize the shut-off and connection at corresponding positions, play a one-way control role, and prevent backflow. The first shut-off structure 7 can prevent the contents stored in the memory 5 from entering the negative pressure drain 4.

[0076] In one embodiment of this disclosure, the storage device 5 can be a storage bag, and the material of the storage bag can be a tear-resistant medical film with a thickness of 0.02 cm. The storage bag is provided with scale markings for easy measurement. Specifically, the storage bag can be heat-sealed from a 0.02 cm thick tear-resistant medical PE film, and scale markings can be prepared on the surface of the storage bag.

[0077] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 7 The anti-blocking rod 14 is hollow and has a first anti-blocking section 141 and a second anti-blocking section 142 connected together. The hardness of the first anti-blocking section 141 is less than that of the second anti-blocking section 142. For example, the Shore hardness of the first anti-blocking section 141 is 40-50A, and the Shore hardness of the second anti-blocking section 142 is 60-70A. This difference in hardness facilitates operation and avoids damage to the first drainage tube 1 and the second drainage tube 3. The side wall of the first anti-blocking section 141 has multiple anti-blocking through holes. Lubricating fluid can be injected while clearing blockages through the hollow anti-blocking rod 14 to enhance the clearing effect. When at least one of the first drainage tube 1 and the second drainage tube 3 is blocked, the second drainage tube 3 and the negative pressure drainage device 4 can be disassembled, and the anti-blocking rod 14 can be inserted through the second drainage tube 3. The interior of the anti-blocking rod 14 is connected to the interior of the first drainage tube 1 through the anti-blocking through holes to clear the blockage.

[0078] In one embodiment of this disclosure, the length of the second anti-blocking segment 142 is greater than the length of the first anti-blocking segment 141.

[0079] In this disclosure, the anti-blocking rod 14 is uniquely designed to simplify the placement of the tube and the anti-blocking operation, reducing the difficulty of the work.

[0080] In one embodiment of this disclosure, the anti-blocking rod 14 can be integrally molded by injection molding.

[0081] In this embodiment, both the flow guide pipe 9 and the pressure-temperature detection unit 8 should have a smooth transition on the inner wall of the first flow guide pipe 1, so as to reduce the retention of contents.

[0082] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A drainage device, characterized in that, It includes a first drainage tube (1), a second drainage tube (3), and a negative pressure drainage assembly connected in sequence; Along the direction close to the second drainage tube (3), the first drainage tube (1) has a first tube segment (11), a second tube segment (12) and a third tube segment (13) connected in sequence. The first tube segment (11) has a drainage port (113), and the outer wall of the second tube segment (12) is fitted with a fixing balloon (2). Along the direction close to the second drainage tube (3), the wall thickness of at least the third tube segment (13) gradually increases.

2. The drainage device according to claim 1, characterized in that, The difference in wall thickness between the two ends of the third pipe section (13) is not greater than 0.9cm and not less than 0.05cm.

3. The drainage device according to claim 1, characterized in that, The first drainage tube (1) is arc-shaped, with a central angle of 30 degrees to 45 degrees and a length of 12cm to 15cm.

4. The drainage device according to claim 1, characterized in that, The first pipe section (11) includes a connecting section (112) and an inlet section (111); the connecting section (112) is connected to the second pipe section (12); The inlet section (111) has a trumpet-shaped structure, and the small-diameter end of the inlet section (111) is connected to the connecting section (112); the large-diameter end of the inlet section (111) forms the drainage port (113).

5. The drainage device according to claim 4, characterized in that, At least one of the inlet section (111) and the connecting section (112) is provided with at least one of the drainage ports (113) on the sidewall.

6. The drainage device according to claim 1, characterized in that, The first pipe section (11) has a sealing section (114), an inlet section (111), and a connecting section (112) connected in sequence; The connecting section (112) is located between the inlet section (111) and the second pipe section (12); The inlet section (111) is funnel-shaped, and the small-diameter end of the inlet section (111) is connected to the second pipe section (12). The sealing section (114) is located at the large-diameter end of the inlet section (111), and the pipe wall of the inlet section (111) is provided with multiple drainage ports (113).

7. The drainage device according to claim 1, characterized in that, The inner wall of the first pipe section (11) is provided with a pressure-temperature detection unit (8); The connecting wire (81) of the pressure-temperature detection unit (8) is embedded in the wall of the first drainage tube (1) and the wall of the second drainage tube (3). Its detection end is located on the outer wall of the first drainage tube (1). The connecting wire (81) extends out from the side of the second drainage tube (3) near the negative pressure drainage component and is used to connect to an external control device.

8. The drainage device according to claim 1, characterized in that, The drainage device also includes at least one drainage conduit (9); The guide pipe (9) is embedded in the pipe wall of the first drainage pipe (1) and the pipe wall of the second drainage pipe (3). One end of the guide pipe (9) is located in the first drainage pipe (1) and opens towards the outside of the first drainage pipe (1). The other end of the guide pipe (9) extends out from the side of the second drainage pipe (3) near the negative pressure drainage component and is used to connect to an external supply device.

9. The drainage device according to claim 1, characterized in that, The negative pressure drainage assembly includes a negative pressure drainer (4) and a memory (5); The first end of the negative pressure drainage device (4) is detachably connected to the side of the second drainage tube (3) away from the first drainage tube (1), the second end of the negative pressure drainage device (4) is detachably connected to the first end of the memory (5), the second end of the memory (5) is provided with a first shut-off structure (7); the second end of the negative pressure drainage device (4) is provided with a second shut-off structure (6).

10. The drainage device according to claim 1, characterized in that, The drainage device also includes an anti-blocking rod (14); the anti-blocking rod (14) is used to clear blockages in the event of blockages in at least one of the first drainage tube (1) and the second drainage tube (3) by entering from the side of the second drainage tube (3) away from the first drainage tube (1); The anti-blocking rod (14) has a first anti-blocking section (141) and a second anti-blocking section (142) connected together, wherein the hardness of the first anti-blocking section (141) is less than the hardness of the second anti-blocking section (142).

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