An abdominal cavity irrigation and drainage device

Abstract

The application provides an abdominal cavity flushing and draining device, which comprises a draining tube, a flushing tube, a plug-in seat, an elastic sealing part, and the flushing tube is plugged into the inner cavity of the draining tube; the plug-in seat is arranged on the draining tube and is provided with a plug-in hole for inserting the flushing tube; the elastic sealing part is sleeved at the connection part of the draining tube and the flushing tube, one end of the elastic sealing part is in sealing connection with the plug-in seat, and the other end of the elastic sealing part is in sealing connection with the peripheral wall of the flushing tube; since the elastic sealing part is wrapped outside the flushing tube, the elastic sealing part blocks dust and bacteria in the outside world during the pulling process of the flushing tube, and the risk of abdominal cavity infection of a patient is reduced.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to an abdominal irrigation and drainage device. Background Technology

[0002] After abdominal surgery, it is necessary to drain the exudate in the abdominal cavity, and even the intestinal fluid, to prevent the exudate from accumulating in the abdominal cavity and causing infection, and to prevent the accumulation of digestive fluid in the abdominal cavity due to intestinal fistula, which can corrode human organs.

[0003] Abdominal drainage involves placing a drainage tube inside the abdominal cavity to drain effusion, blood, pus, etc., especially after major surgery. This facilitates observation of changes in the nature, amount, and color of the drainage fluid, helping to determine if there has been significant postoperative bleeding, infection, or the patient's recovery. Increasing negative pressure suction as needed can improve drainage effectiveness. To further enhance fluid removal, irrigation fluid may be introduced into the drainage tube. Specifically, an irrigation section is pre-installed inside the drainage tube. When it's necessary to clear effusion from the abdominal cavity, this irrigation section connects to external irrigation fluid, supplying it to the abdominal cavity. This dilutes the effusion, accelerates its flow, and facilitates drainage.

[0004] Because of the negative pressure environment inside the drainage tube, tissues, blood clots, or secretions inside the abdominal cavity can easily block the drainage holes on the wall of the drainage tube, resulting in a low amount of fluid drainage.

[0005] Medical staff will try to solve the above problems by pulling the flushing tube or increasing the flow rate of the flushing fluid. When increasing the flow rate of the flushing fluid fails, the flushing tube will be pulled. However, there is a risk that the fluid inside the drainage tube may flow out from the gap between the flushing tube and the wall of the drainage tube. The routine process of pulling the flushing tube increases the risk of bringing external pathogens into the drainage tube and causing intra-abdominal infection.

[0006] Therefore, how to design an abdominal irrigation and drainage device to reduce abdominal infection has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] This application provides an abdominal irrigation and drainage device to at least solve the above-mentioned technical problems existing in the prior art.

[0008] An abdominal irrigation and drainage device is provided, including a drainage tube, an irrigation tube, the irrigation tube being inserted into the inner lumen of the drainage tube, and an insertion seat, the insertion seat being disposed on the drainage tube and having an insertion hole for inserting the irrigation tube. The elastic sealing part is sleeved at the connection between the drainage tube and the flushing tube. One end of the elastic sealing part is sealed to the plug seat, and the other end of the elastic sealing part is sealed to the peripheral wall of the flushing tube.

[0009] In one embodiment, the elastic sealing part is a bellows, one end of which is connected to the peripheral wall of the plug-in seat, and the other end of which is connected to the peripheral wall of the flushing pipe.

[0010] In one embodiment, the flushing tube includes an embedded section and an external section, wherein the embedded section is inserted into the inner cavity of the drainage tube through a plug hole, the end of the external section is detachably connected to the end of the embedded section, one end of the elastic sealing part is sealed to the peripheral wall of the plug seat, and the other end of the elastic sealing part is sealed to the peripheral wall of the external section.

[0011] In one embodiment, a limiting plate is provided in the inner cavity of the plug-in socket, the plug-in hole is provided on the limiting plate, and a limiting edge is provided at the end of the embedded section. The diameter of the limiting edge is larger than the diameter of the plug-in hole. When the embedded section is installed, the limiting edge abuts against the limiting plate.

[0012] In one embodiment, the outer wall of the plug-in socket is provided with a threaded section and also includes a sealing nut. The outer section is installed on the sealing nut and passes through the sealing nut along the axial direction of the sealing nut. The sealing nut is threadedly connected to the threaded section, and the end of the outer section is inserted into the embedded section.

[0013] In one embodiment, the elastic sealing part is installed between the limiting seat plate and the sealing nut, with one end of the elastic sealing part being sealed to the limiting seat plate and the other end of the elastic sealing part being sealed to the inner wall of the sealing nut.

[0014] In one embodiment, the inner wall of the plug socket is fixedly provided with a first limiting protrusion extending radially, and a first snap and groove are left between the first limiting protrusion and the limiting seat plate. The inner wall of the sealing nut is fixedly provided with a second limiting protrusion extending radially, and the second limiting protrusion and the inner wall of the sealing nut form a second snap and groove. The elastic sealing part includes a bellows, a first positioning ring, and a second positioning ring. The two ends of the bellows are respectively sealed and connected to the end walls of the first positioning ring and the second positioning ring. The first positioning ring is snapped into the first snap and groove, and the second positioning ring is snapped into the second snap and groove. The embedded section extends through the first positioning ring into the inner cavity of the drainage tube.

[0015] In one embodiment, the sealing nut includes a connecting part and a mounting part, the connecting part and the mounting part are rotatably connected, the connecting part is threadedly connected to the threaded section, and the second limiting protrusion and the outer connecting section are both mounted on the mounting part.

[0016] In one embodiment, the device further includes a connector that is inserted into one end of a drainage tube extending to the outside of the human body, and a plurality of drainage holes that are disposed on the peripheral wall of the drainage tube. A plug is disposed on the connector.

[0017] In one embodiment, the connector has two through ends and also includes a negative pressure seat. The negative pressure seat is installed at one end of the connector and has a negative pressure pipe that communicates with the inner cavity of the connector.

[0018] Compared with the prior art, the abdominal irrigation and drainage device of this application has the following advantages: This application utilizes an elastic sealing part sleeved between the flushing tube and the connector to seal the connection between the flushing tube and the connector hole. When it is necessary to solve the problem of drainage tube blockage, the flushing tube can be pulled in the connector hole because the elastic sealing part has a certain elastic deformation capacity. At this time, the flushing tube is equivalent to a plunger moving in the inner cavity of the drainage tube. When the flushing tube is inserted into the drainage tube, it pushes the flushing fluid in the drainage tube to spray out quickly, improving the flushing effect on the accumulated fluid. When the flushing tube is pulled out, the accumulated fluid flows into the inner cavity of the drainage tube. During the process of the flushing tube being pulled out, the pressure difference between the inside and outside of the drainage tube is increased, which can solve the problem of drainage tube drainage hole blockage. Because the elastic seal is wrapped around the outside of the flushing tube, it blocks external dust and germs during the flushing tube's movement, reducing the risk of abdominal infection for patients.

[0019] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0020] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0021] Figure 1 This paper shows a schematic diagram of the overall structure of an abdominal irrigation and drainage device according to the present application; Figure 2 A partial structural schematic diagram of Embodiment 1 of this application is shown; Figure 3 A cross-sectional view of Embodiment 2 of this application is shown; Figure 4 This diagram shows a first state of the connector according to Embodiment 2 of this application; Figure 5 This diagram illustrates the second state of the connector according to Embodiment 2 of this application. Figure 6 A partially expanded schematic diagram of Embodiment 2 of this application is shown; Figure 7A cross-sectional view of the connector according to Embodiment 2 of this application is shown; Figure 8 A schematic diagram of the sealing nut of Embodiment 2 of this application is shown.

[0022] Explanation of the labels in the diagram: 1. Drainage tube; 10. Drainage hole; 101. Flushing end; 102. Drainage end; 11. Insertion socket; 111. Insertion hole; 112. Limiting seat plate; 113. Threaded section; 114. First limiting protrusion; 115. First buckle and groove; 2. Flushing pipe; 20. Water outlet; 21. Embedded section; 211. Limiting edge; 22. External connection section; 221. Delivery pipe; 222. Connecting pipe; 3. Elastic sealing part; 31. Bellows; 32. First positioning ring; 33. Second positioning ring; 4. Sealing nut; 41. Second limiting protrusion; 42. Second snap and groove; 43. Connecting part; 44. Mounting part; 5. Connector; 6. Negative pressure seat; 61. Negative pressure pipe. Detailed Implementation

[0023] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Example 1: like Figure 1 As shown, the device includes a drainage tube 1 and an irrigation tube 2. The two ends of the drainage tube 1 are connected. The end of the drainage tube 1 extending into the abdominal cavity is defined as the irrigation end 101, and the end of the drainage tube 1 extending out of the body is defined as the drainage end 102. It also includes several drainage holes 10, which are located on the peripheral wall of the drainage tube 1. The drainage holes 10 are used to drain the fluid inside the abdominal cavity into the inner lumen of the drainage tube 1. One end of the irrigation tube 2 is inserted into the inner lumen of the drainage tube 1. Irrigation fluid is delivered through the irrigation tube 2 to dilute and flush the fluid inside the abdominal cavity, thereby facilitating the drainage of the fluid through the drainage holes 10 into the inner lumen of the drainage tube 1.

[0025] The flushing tube 2, located at one end outside the abdominal cavity, can be connected to a flushing fluid supply device. The flushing fluid flows through the flushing tube 2 into the inner cavity of the drainage tube 1. At this time, the flushing fluid in the inner cavity of the drainage tube 1 will flow into the abdominal cavity from the flushing end 101 of the drainage tube 1, thereby achieving the purpose of diluting and flushing the effusion.

[0026] To facilitate the installation of the flushing tube 2, this embodiment also includes a plug seat 11 provided on the drainage tube 1. The plug seat 11 is provided with a plug hole 111 for the flushing tube 2 to be inserted. The tube wall of the flushing tube 2 is slidably connected to the inner wall of the plug hole 111 so that the flushing tube 2 can be pulled in the drainage tube 1.

[0027] With the above setup, since the drainage tube 1 is placed inside the abdominal cavity, tissues, organs, secretions, and blood clots inside the abdominal cavity easily adhere to the outer wall of the drainage tube 1, thus blocking the drainage hole 10 and resulting in less drainage fluid. To solve the problem of the drainage hole 10 being blocked, in this embodiment, medical staff increase the water supply from the flushing tube 2 to the drainage tube 1, strengthening the impact of the flushing fluid on the fluid inside the abdominal cavity, thereby alleviating the problem of the drainage hole 10 being blocked. When increasing the water supply from the flushing tube 2 has little effect and still cannot improve the situation, medical staff will repeatedly pump the flushing tube 2 back and forth. At this time, the flushing tube 2 can be seen as... As the plunger moves within the lumen of the drainage tube 1, when the flushing tube 2 is withdrawn to the outside of the drainage tube 1, it draws in the abdominal fluid from the flushing end 101 of the drainage tube 1, reducing the adhesion between the tissue or organ and the outer wall of the drainage tube 1. When the flushing tube 2 is inserted into the lumen of the drainage tube 1, it pushes the flushing fluid in the drainage tube 1 outward, thereby accelerating the flow of the flushing fluid and allowing blood clots or secretions to pass through the drainage hole 10 into the lumen of the drainage tube 1. During the reciprocating movement of the flushing tube 2, the pressure difference between the inner and outer walls of the drainage tube 1 increases, thereby solving the problem of the drainage hole 10 being blocked and improving the drainage effect of the fluid.

[0028] Specifically, such as Figure 1 As shown, it also includes a connector 5, wherein a plug-in seat 11 is disposed on the side wall of the connector 5. The plug-in seat 11 is installed at the drainage end 102 of the drainage tube 1 through the connector 5, thereby realizing the installation of the plug-in seat 11.

[0029] In order to drain the accumulated fluid in the drainage tube 1, a negative pressure seat 6 and a negative pressure tube 61 are also included, such as Figure 2 As shown, the negative pressure seat 6 is located at the end of the connector 5 away from the drainage tube 1. The negative pressure tube 61 is located on the negative pressure seat 6 and communicates with the inner cavity of the drainage tube 1. It also includes a pump body that provides negative pressure to the negative pressure tube 61.

[0030] With the above setup, the peritoneal fluid drainage process is as follows: by providing flushing fluid into the flushing tube 2, the flushing fluid flows out from the outlet 20 of the flushing tube 2, and then flows into the peritoneal cavity from the drainage end 102 of the drainage tube 1, diluting and flushing the peritoneal fluid. The pump body provides a negative pressure environment for the inner cavity of the drainage tube 1 through the negative pressure tube 61. At this time, the peritoneal fluid flows into the inner cavity of the drainage tube 1 through the drainage hole 10 on the drainage tube 1, and then the peritoneal fluid is drained outward through the negative pressure tube 61.

[0031] When the problem of the drainage hole 10 being blocked is relieved by pulling the flushing tube 2, the reciprocating movement of the flushing tube 2 will bring external dust or germs into the inner cavity of the drainage tube 1, which can easily cause postoperative infection in patients. At the same time, due to the pulling of the flushing tube 2, the fluid inside the drainage tube 1 can easily flow out from the gap between the outer wall of the flushing tube 2 and the inner wall of the insertion hole 111, thus causing the fluid to overflow.

[0032] Because, in this embodiment, such as Figure 2 As shown, it also includes an elastic sealing part 3, wherein the elastic sealing part 3 is sleeved at the insertion position of the plug-in seat 11 and the flushing tube 2. One end of the elastic sealing part 3 is sealed to the peripheral wall of the plug-in seat 11, and the other end of the elastic sealing part 3 is sealed to the peripheral wall of the flushing tube 2. Thus, the elastic sealing part 3 seals the connection between the flushing tube 2 and the plug-in seat 11, solving the problem of contamination at the connection position, and at the same time preventing the internal liquid of the drainage tube 1 from overflowing to the outside.

[0033] Because the elastic sealing part 3 has a certain degree of elasticity, when the flushing pipe 2 is reciprocated, it will stretch the elastic sealing part 3, providing a good working environment for the flushing pipe 2 to be pulled out.

[0034] Specifically, in this embodiment, the elastic sealing part 3 can be a bellows 31, one end of which is connected to the peripheral wall of the plug seat 11, and the other end of which is connected to the peripheral wall of the flushing pipe 2.

[0035] To prevent the flushing tube 2 from being inserted too deeply and protruding from the flushing end 101 of the drainage tube 1, thus touching abdominal organs, therefore in this embodiment, as... Figure 1 As shown, when the flushing pipe 2 is fully inserted into the drainage pipe 1, the water outlet 20 of the flushing pipe 2 is still located in the inner cavity of the drainage pipe 1.

[0036] It is worth noting that the water outlet 20 of the flushing pipe 2 is aligned with the first drainage hole 10 on the side of the drainage pipe 1 near the flushing end 101.

[0037] Example 2: One embodiment uses an elastic sealing part 3 to seal the connection between the flushing tube 2 and the plug-in seat 11. This reduces the risk of postoperative infection for the patient while allowing the flushing tube 2 to be pulled out. However, the direct installation of the elastic sealing part 3 makes the connection between the flushing tube 2 and the plug-in seat 11 less stable, which may affect the patient's movement.

[0038] Therefore, this embodiment is an improvement based on Embodiment 1.

[0039] Reference Figures 3 to 8As shown, the flushing tube 2 includes an embedded section 21 and an external section 22. The embedded section 21 is pre-embedded in the inner cavity of the drainage tube 1. The external section 22 is detachably connected to the embedded section 21. When it is necessary to provide flushing fluid to the inner cavity of the drainage tube 1, the external section 22 is connected to the embedded section 21, and then the flushing fluid can be supplied through the external section 22.

[0040] In order to achieve the installation of the embedded section 21, in this embodiment, as follows: Figure 4 and Figure 7 As shown, a limiting seat plate 112 is provided in the inner cavity of the plug-in seat 11, wherein the plug-in hole 111 is provided on the limiting seat plate 112, and the end of the embedded section 21 is provided with a limiting edge 211 extending radially. When the embedded section 21 extends into the inner cavity of the drainage tube 1 through the plug-in hole 111, the limiting edge 211 abuts against the end wall of the limiting seat plate 112, at which time the embedded section 21 is inserted to the deepest point.

[0041] It is worth noting that the outer diameter of the embedded section 21 is smaller than the diameter of the insertion hole 111, and the outer wall of the embedded section 21 is slidably connected to the inner wall of the insertion hole 111 so that the embedded section 21 can be pulled out.

[0042] To facilitate the connection between the external segment 22 and the embedded segment 21, in this embodiment, as follows: Figure 4 , Figure 5 and Figure 6 As shown, the outer wall of the plug-in 11 is provided with a threaded section 113 and also includes a sealing nut 4. The outer section 22 passes through the sealing nut 4 and is installed on the sealing nut 4. The sealing nut 4 is threadedly connected to the threaded section 113. Then the outer section 22 is inserted into the embedded section 21.

[0043] When the outer section 22 is inserted into the embedded section 21, the embedded section 21 and the outer section 22 are interference-fitted.

[0044] Specifically, such as Figure 5 and Figure 6 As shown, the external section 22 includes a delivery pipe 221 and a connecting pipe 222. The connecting pipe 222 is installed on the sealing nut 4. When it is necessary to deliver flushing fluid, the delivery pipe 221 and the connecting pipe 222 can be connected.

[0045] To achieve the installation of the elastic sealing part 3, specifically, in this embodiment, as follows: Figure 4 and Figure 5 As shown, the elastic sealing part 3 is installed between the limiting seat plate 112 and the sealing nut 4 to fit the connection position between the embedded section 21 and the connecting pipe 222.

[0046] The elastic sealing part 3 includes a bellows 31, a first positioning ring 32 and a second positioning ring 33. The first positioning ring 32 and the second positioning ring 33 are respectively installed at both ends of the bellows 31. The first positioning ring 32 is installed on the limiting seat plate 112, and the second positioning ring 33 is installed on the inner wall of the sealing nut 4. The limiting edge 211 of the embedded section 21 is located in the inner cavity of the bellows 31.

[0047] Specifically, such as Figure 4 and Figure 7 As shown, a first limiting protrusion 114 extending radially inward is fixedly provided on the inner wall of the plug-in base 11. A first buckle and groove 115 is reserved between the first limiting protrusion 114 and the limiting base plate 112, and the first positioning ring 32 is fastened and engaged in the first buckle and groove 115; Figure 8 As shown, the inner wall of the sealing nut 4 is provided with a second limiting protrusion 41 extending radially inward, and a second buckle and groove 42 are reserved between the second limiting protrusion 41 and the inner wall of the sealing nut 4 for the second positioning ring 33 to be fastened.

[0048] To install the sealing nut 4 onto the threaded section 113, the sealing nut 4 needs to be rotated. However, since the connecting pipe 222 forms an interference fit after being inserted into the embedded section 21, the sealing nut 4 is difficult to rotate. Therefore, in this embodiment, as... Figure 8 As shown, the sealing nut 4 includes a connecting part 43 and a mounting part 44. The thread is provided on the connecting part 43, and the connecting part 43 and the mounting part 44 are rotatably connected. The second positioning ring 33 and the outer connecting section 22 are mounted on the mounting part 44. When the sealing nut 4 is connected to the plug-in seat 11, only the connecting part 43 needs to be rotated to realize the connection between the connecting part 43 and the threaded section 113.

[0049] With the above setup, the first positioning ring 32 is first fastened into the first fastener and groove 115, and then the embedded section 21 extends through the inner hole of the first positioning ring 32 to the inner cavity of the drainage tube 1. Then the corrugated tube 31 and the second positioning ring 33 are stored in the inner cavity of the plug-in seat 11. At this time, the elastic sealing part 3 can be sealed by the nut.

[0050] When it is necessary to provide flushing fluid into the drainage tube 1, the nut is removed, the connecting tube 222 is installed on the mounting part 44, and then the second positioning ring 33 is fastened into the second fastening groove 42. At this time, the connecting tube 222 is inserted into the embedded section 21. Then, by rotating the connecting part 43, the sealing nut 4 and the insertion seat 11 are installed. Finally, the delivery tube 221 and the connecting tube 222 are connected.

[0051] When it is necessary to solve the problem of the drainage hole 10 on the drainage tube 1 being blocked, the connecting part 43 can be rotated to separate the connecting part 43 from the plug seat 11. Then, the elastic sealing part 3 can be pulled out of the inner cavity of the plug seat 11 by holding the delivery tube 221. Since the connecting tube 222 is interference-fitted with the embedded section 21, the embedded section 21 will be dragged back and forth by the connecting tube 222, which can realize the back and forth movement of the flushing tube 2, thereby relieving the problem of the drainage hole 10 being blocked.

[0052] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0054] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An abdominal irrigation and drainage device, comprising a drainage tube (1) and an irrigation tube (2), wherein the irrigation tube (2) is inserted into the inner cavity of the drainage tube (1), characterized in that, A connector (11) is provided on the drainage tube (1) and has a connector hole (111) for inserting the flushing tube (2); The elastic sealing part (3) is sleeved at the connection between the drainage tube (1) and the flushing tube (2). One end of the elastic sealing part (3) is sealed to the plug seat (11), and the other end of the elastic sealing part (3) is sealed to the peripheral wall of the flushing tube (2). The elastic sealing part (3) is a bellows (31). One end of the bellows (31) is connected to the peripheral wall of the plug-in seat (11), and the other end of the bellows (31) is connected to the peripheral wall of the flushing pipe (2).

2. The abdominal cavity irrigation and drainage device according to claim 1, characterized in that, The flushing tube (2) includes an embedded section (21) and an external section (22). The embedded section (21) passes through the insertion hole (111) and is inserted into the inner cavity of the drainage tube (1). The end of the external section (22) is detachably connected to the end of the embedded section (21). One end of the elastic sealing part (3) is sealed to the peripheral wall of the insertion seat (11), and the other end of the elastic sealing part (3) is sealed to the peripheral wall of the external section (22).

3. The abdominal cavity irrigation and drainage device according to claim 2, characterized in that, A limiting seat plate (112) is provided in the inner cavity of the plug-in seat (11), and the plug hole (111) is provided on the limiting seat plate (112). A limiting edge (211) is provided at the end of the embedded section (21). The diameter of the limiting edge (211) is larger than the diameter of the plug hole (111). When the embedded section (21) is installed, the limiting edge (211) abuts against the limiting seat plate (112).

4. The abdominal cavity irrigation and drainage device according to claim 3, characterized in that, The outer wall of the plug-in socket (11) is provided with a threaded section (113) and also includes a sealing nut (4). The outer section (22) is installed on the sealing nut (4). The outer section (22) passes through the sealing nut (4) along the axial direction of the sealing nut (4). The sealing nut (4) is threadedly connected to the threaded section (113). The end of the outer section (22) is inserted into the embedded section (21).

5. The abdominal cavity irrigation and drainage device according to claim 4, characterized in that, The elastic sealing part (3) is installed between the limiting seat plate (112) and the sealing nut (4). One end of the elastic sealing part (3) is sealed to the limiting seat plate (112), and the other end of the elastic sealing part (3) is sealed to the inner wall of the sealing nut (4).

6. The abdominal cavity irrigation and drainage device according to claim 4, characterized in that, The inner wall of the plug-in socket (11) is fixedly provided with a first limiting protrusion (114) extending radially. A first buckle and groove (115) is left between the first limiting protrusion (114) and the limiting seat plate (112). The inner wall of the sealing nut (4) is fixedly provided with a second limiting protrusion (41) extending radially. The second limiting protrusion (41) and the inner wall of the sealing nut (4) form a second buckle and groove (42). The elastic sealing part (3) includes a bellows (31), a first positioning ring (32), and a second positioning ring (33). The two ends of the bellows (31) are respectively sealed and connected to the end walls of the first positioning ring (32) and the second positioning ring (33). The first positioning ring (32) is fastened in the first buckle and groove (115), and the second positioning ring (33) is fastened in the second buckle and groove (42). The embedded section (21) extends through the first positioning ring (32) into the inner cavity of the drainage tube (1).

7. The abdominal cavity irrigation and drainage device according to claim 6, characterized in that, The sealing nut (4) includes a connecting part (43) and a mounting part (44). The connecting part (43) and the mounting part (44) are rotatably connected. The connecting part (43) is threadedly connected to the threaded section (113). The second limiting protrusion (41) and the external section (22) are both mounted on the mounting part (44).

8. An abdominal irrigation and drainage device according to claim 1 or 7, characterized in that, It also includes a connector (5), which is inserted into one end of the drainage tube (1) extending to the outside of the human body, and several drainage holes (10), which are set on the peripheral wall of the drainage tube (1), and a plug (11) is set on the connector (5).

9. The abdominal cavity irrigation and drainage device according to claim 8, characterized in that, The connector (5) is open at both ends and also includes a negative pressure seat (6). The negative pressure seat (6) is installed at one end of the connector (5) and a negative pressure pipe (61) is provided on the negative pressure seat (6) that communicates with the inner cavity of the connector (5).

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