Medical adult colostomy enema device

Abstract

The invention discloses a medical adult colostomy enema device, and relates to the field of medical instruments, the medical adult colostomy enema device comprises a main cover, the outer surface of the main cover is symmetrically and fixedly connected with two hook-and-loop fasteners, the main cover is internally provided with a leakage-proof structure, the leakage-proof structure comprises an auxiliary cover, the top of the auxiliary cover is symmetrically and fixedly connected with two pairs of first fixing blocks, and the two pairs of first fixing blocks are symmetrically and fixedly connected with a second fixing block. Two pairs of second fixing blocks are symmetrically and fixedly connected to the inner wall of the main cover, a connecting rod is rotationally connected between the adjacent first fixing block and the pair of second fixing blocks, straight rods are fixedly connected to the tops of the two connecting rods, a protruding block is fixedly connected to the top of the auxiliary cover, the top of the protruding block penetrates through the bottom, and a butt joint groove is formed in the top of the protruding block and communicates with the interior of the auxiliary cover. The inner wall of the butt joint groove is fixedly connected with a sealing ring. Through the arrangement of the leakage-proof structure, the double-nesting design of the main cover and the auxiliary cover and the combination of elastic sealing of the first rubber pad and the second rubber pad at the bottom, multiple physical barriers are formed around the stoma, and transverse leakage of enema and excrement is effectively blocked.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a medical adult colostomy irrigation device. BACKGROUND

[0002] The adult colostomy irrigation device is a one-piece portable irrigation system specially designed for colostomy patients, mainly used to help patients regularly empty the distal colon through the stoma, thereby forming a controllable and predictable bowel habit. The Chinese patent with publication number "CN118924985A" discloses an adult colostomy irrigation device, belonging to the field of medical devices, comprising a connecting seat, the outer surface of the connecting seat is symmetrically fixedly connected with a first magic tape and a second magic tape, the inside of the connecting seat is slidably connected with an irrigation cylinder, the lower surface of the connecting seat is fixedly connected with a protective cover, the lower surface edge of the protective cover is fixedly connected with a silica gel ring The above-mentioned patent can realize the entry of the mixed liquid into the inside of the hollow block, the collection of the mixed liquid in the inside of the annular frame through the hose, and the transfer of the mixed liquid to the appropriate place for collection through the two first conduits into the inside of the water pump, so that the mixed liquid can be effectively and quickly discharged during the irrigation, avoiding the flow of the mixed liquid from the stoma, and avoiding the pollution of the patient's clothes and surrounding objects. However, the sealing structure is single and cannot be adjusted, which is difficult to fit the stoma shape and abdominal contour of different patients, and is easy to cause leakage of the irrigation liquid or excrement. The pipe switching process often needs to be repeatedly disassembled and connected, which not only is complicated to operate and prolongs the treatment time, but also destroys the airtightness of the operation and increases the risk of infection. SUMMARY

[0003] The main purpose of the present application is to provide a medical adult colostomy irrigation device, which can effectively solve the technical problem of single and unadjustable sealing structure of the existing irrigation device.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: A medical adult colostomy irrigation device, comprising a main cover, the outer surface of the main cover is symmetrically fixedly connected with two magic tapes, the inside of the main cover is provided with a leakage-proof structure, the leakage-proof structure comprises a sub-cover, the top of the sub-cover is symmetrically fixedly connected with two pairs of fixed blocks one, the inner wall of the main cover is symmetrically fixedly connected with two pairs of fixed blocks two, a connecting rod is rotatably connected between an adjacent pair of fixed blocks one and an adjacent pair of fixed blocks two, the top of each of the two connecting rods is fixedly connected with a straight rod, the top of the sub-cover is fixedly connected with a protruding block, a butt joint groove is formed through the top and the bottom of the protruding block and communicates with the inside of the sub-cover, and a sealing ring is fixedly connected to the inner wall of the butt joint groove.

[0005] The top of the two straight rods is fixedly connected with a connecting rod, the proximal ends of the two connecting rods are fixedly connected with each other, and the top of the main cover is rotationally connected with a screw rod.

[0006] The screw rod is threadedly connected with the proximal ends of the two straight rods, the screw rod is rotated, the two connecting rods are pressed down under the action of the two connecting rods, the two straight rods and the two top blocks, so that the auxiliary cover is more closely attached to the skin near the stoma.

[0007] The bottom of the main cover is fixedly connected with a rubber pad one, the bottom of the auxiliary cover is fixedly connected with a rubber pad two, and the rubber pad one and the rubber pad two respectively improve the sealing degree of the main cover and the auxiliary cover.

[0008] The top of the main cover is provided with a switching structure, the switching structure comprises a rotating disc, the bottom of the main cover is provided with a through groove penetrating the top, the rotating disc is arranged in the through groove, the top of the rotating disc is provided with two pipe grooves penetrating the bottom and symmetrically arranged along the center of the rotating disc, a rotating ring is rotationally connected in the pipe grooves, six sliding grooves are equidistantly arranged on the outer surface of the rotating disc, and a handle is fixedly connected to the top of the rotating disc.

[0009] The inner part of each sliding groove is slidably connected with a sliding block, and the six sliding blocks are equidistantly fixedly connected to the inner wall of the rotating ring.

[0010] The top of the rotating disc is symmetrically fixedly connected with two shift blocks, the top of the main cover is axially symmetrically fixedly connected with two stop blocks along the center of the rotating disc, and the two stop blocks are respectively located on the sides away from the two shift blocks.

[0011] The top of the rotating disc is symmetrically fixedly connected with two connecting blocks, the bottom of the connecting block is fixedly connected with a plug block at one end, the top of the main cover is symmetrically provided with two insertion grooves along the center of the rotating disc, and the plug block is inserted into the insertion grooves.

[0012] The top of the rotating disc is symmetrically fixedly connected with two connecting blocks, the bottom of the connecting block is fixedly connected with a plug block at one end, the top of the main cover is symmetrically provided with two insertion grooves along the center of the rotating disc, and the plug block is inserted into the insertion grooves.

[0013] The vertical length of the plug block is lower than the vertical length of the sliding groove, the positions of the two pipe grooves are exchanged through the rotating disc, the sliding block and the sliding groove, so that the object of the leakage prevention structure is exchanged.

[0014] The beneficial effects of the present application are as follows: By setting the leakage-proof structure, the double-nested design of the main cover and the auxiliary cover, combined with the elastic sealing of the bottom rubber pad one and the rubber pad two, multiple physical barriers are formed around the stoma, effectively blocking the horizontal leakage of enema liquid and excrement; By screw rod pressing down connecting rod, the fitting pressure of auxiliary cover and skin around stoma can be actively enhanced, forming a dynamically adjustable sealing effect, effectively responding to individual skin differences and body position changes, and significantly improving the reliability of leakage prevention; Through the switching structure, the alternative connection of the enema and the sewage pipeline in the closed system is quickly completed, avoiding the pollution risk and process interruption caused by repeated disassembly of the device in traditional operation, ensuring the continuity and safety of the operation; Through the plug-in cooperation of the plug and the slot, the working position of the rotating disc is provided with clear mechanical locking, preventing displacement or loosening due to accidental force during enema or sewage discharge, and ensuring the stability and function reliability of the device state in the treatment stage; Through the cooperation of the conical threaded sleeve and the contraction block, the enema tube and the sewage pipe can be firmly clamped by simple rotation operation, which not only prevents accidental loosening of the pipeline during work, but also ensures that the pipeline can move synchronously and accurately with the rotating disc, realizing the coordination of the whole operation; Through the limiting contact design of the dial block and the stop block, clear visual and tactile positioning feedback is provided for the operator, which can quickly and accurately distinguish enema and sewage workstations, effectively avoiding angle misjudgment in the switching process, and improving the one-time success rate of operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic diagram of the medical adult colon stoma irrigation device of the application; Figure 2 It is a leakage-proof structure analysis split diagram of the medical adult colon stoma irrigation device of the application; Figure 3 It is a split display diagram of the auxiliary cover and the rubber pad two of the medical adult colon stoma irrigation device of the application; Figure 4 It is a connecting rod and screw rod display diagram of the medical adult colon stoma irrigation device of the application; Figure 5 It is a switching structure display diagram of the medical adult colon stoma irrigation device of the application; Figure 6 It is a split display diagram of the switching structure of the medical adult colon stoma irrigation device of the application; Figure 7 It is a split display diagram of the contraction block and the threaded sleeve of the medical adult colon stoma irrigation device of the application.

[0016] In the figure: 1, main cover; 2, magic tape; 3, rubber pad one; 4, leakage-proof structure; 5, auxiliary cover; 6, fixed block one; 7, fixed block two; 8, connecting rod; 9, top block; 10, straight rod; 11, protruding block; 12, butt joint groove; 13, sealing ring; 14, rubber pad two; 15, connecting rod; 16, screw rod; 17, switching structure; 18, rotating disc; 19, handle; 20, push block; 21, stop block; 22, rotating groove; 23, rotating ring; 24, sliding block; 25, sliding groove; 26, connecting block; 27, insertion block; 28, insertion groove; 29, pipe groove; 30, contraction block; 31, threaded groove; 32, threaded sleeve. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0018] As shown in Figure 1 - Figure 7 A medical adult colostomy enema device, comprising a main cover 1, the outer surface of the main cover 1 is fixedly connected with two magic tapes 2 symmetrically, the inside of the main cover 1 is provided with a leakage-proof structure 4, the leakage-proof structure 4 comprises an auxiliary cover 5, the top of the auxiliary cover 5 is fixedly connected with two pairs of fixed blocks one 6 symmetrically, the inner wall of the main cover 1 is fixedly connected with two pairs of fixed blocks two 7 symmetrically, a connecting rod 8 is rotatably connected between an adjacent pair of fixed blocks one 6 and an adjacent pair of fixed blocks two 7, the top of the two connecting rods 8 is fixedly connected with a straight rod 10, the top of the auxiliary cover 5 is fixedly connected with a protruding block 11, the top of the protruding block 11 penetrates the bottom and is provided with a butt joint groove 12 in communication with the inside of the auxiliary cover 5, and the inner wall of the butt joint groove 12 is fixedly connected with a sealing ring 13; In actual operation, first, the main cover 1 is aligned with the stoma, and the main cover 1 is fixed at the stoma of the patient through the two magic tapes 2, when the main cover 1 is aligned with the stoma, the auxiliary cover 5 is also aligned with the stoma, and the external enema tube and the sewage pipe are inserted into the two pipe grooves 29 respectively, and the enema tube is aligned with and connected to the butt joint groove 12 and is inserted into the inside of the stoma, the sealing degree between the enema tube and the butt joint groove 12 is increased through the sealing ring 13, at this time, the enema liquid can be injected into the colon of the patient through the cooperation of the external enema bag and the enema tube, after the relationship is completed, the enema tube is separated from the butt joint groove 12, the sewage pipe is connected to the butt joint groove 12, and the fecal water in the colon can be sent to the sewage bag through the sewage pipe, so as to complete the enema work, the auxiliary cover 5 seals the stoma in the enema work, and the main cover 1 seals the auxiliary cover 5, so as to achieve a double sealing effect.

[0019] In the embodiment, the top of the two straight rods 10 and the top of the main cover 1 are fixedly connected with connecting rods 15, the proximal ends of the two connecting rods 15 are fixedly connected with each other, and the top of the main cover 1 is rotatably connected with a screw rod 16; During the process of enema, the two connecting rods 15 can be driven to descend by rotating the screw rod 16, thereby driving the two straight rods 10 to descend synchronously, thereby providing the two connecting rods 8 with downward pressure through the two top blocks 9, so as to provide the sub-cover 5 with downward pressure, so that the sub-cover 5 is more fitted to the perianal area, and the sealing property is improved, the precise adjustment of the fitting pressure of the sub-cover is realized, and the abdominal contour and skin elasticity of different patients can be actively adapted to, and the stable and reliable sealing effect is still maintained in the dynamic environment.

[0020] In the embodiment, the screw rod 16 is threadedly connected with the proximal ends of the two straight rods 10, the screw rod 16 is rotated, and the two connecting rods 8 are pressed downward under the action of the two connecting rods 15, the two straight rods 10 and the two top blocks 9, so that the sub-cover 5 is more fitted to the skin near the stoma.

[0021] In the embodiment, the bottom of the main cover 1 is fixedly connected with a rubber pad one 3, and the bottom of the sub-cover 5 is fixedly connected with a rubber pad two 14, and the rubber pad one 3 and the rubber pad two 14 improve the sealing degree of the main cover 1 and the sub-cover 5 respectively.

[0022] In the embodiment, the top of the main cover 1 is provided with a switching structure 17, the switching structure 17 comprises a rotating disc 18, a through slot is formed in the bottom of the main cover 1 and penetrates the top, a rotating slot 22 of the main cover 1, the rotating disc 18 is arranged in the through slot, two pipe slots 29 are symmetrically formed in the top and penetrate the bottom of the rotating disc 18 along the center, a rotating ring 23 is rotatably connected in the rotating slot 22, six sliding grooves 25 are equidistantly formed on the outer surface of the rotating disc 18, and a handle 19 is fixedly connected to the center of the top of the rotating disc 18. The rotating disc 18 is pulled upward by the handle 19, the six sliding grooves 25 slide upward relative to the six sliding blocks 24, until the sliding blocks 24 are located at the bottom of the sliding grooves 25, the enema tube is separated from the stoma and the sub-cover 5, at this time, the rotating disc 18 is rotated, the rotating ring 23 is driven to rotate along the inside of the rotating slot 22 through the cooperation of the sliding grooves 25 and the sliding blocks 24, thereby driving the two pipe slots 29 to rotate synchronously, until the rotating disc 18 is rotated by one hundred and eighty degrees, at this time, the drain pipe is opposite to the butt joint slot 12, and then the rotating disc 18 is pressed downward, thereby driving the drain pipe to move downward, so as to be inserted into the stoma, so that the enema and the drain pipe are alternately connected in the closed system, the pollution risk and the process interruption caused by repeated disassembly of the traditional operation are avoided, and the continuity and the sanitary safety of the operation are ensured.

[0023] In the embodiment, the sliding blocks 24 are slidably connected in the sliding grooves 25, the six sliding blocks 24 are equidistantly fixedly connected to the inner wall of the rotating ring 23, and the sliding blocks 24 are located at the top of the sliding grooves 25.

[0024] In this embodiment, two toggle blocks 20 are symmetrically fixedly connected to the top of the turntable 18, and two stop blocks 21 are symmetrically fixedly connected to the top of the main cover 1 along the center of the turntable 18. The two stop blocks 21 are located on the opposite sides of the two toggle blocks 20. When the enema tube is connected to the docking slot 12, the two levers 20 and the two stops 21 are in contact with each other on opposite sides. When the turntable 18 is rotated to switch between the enema tube and the sewage pipe, the two levers 20 will rotate together, and the two levers 20 will be in contact with each other on opposite sides. At this time, the sewage pipe is facing the top of the docking slot 12. Through the limiting contact design of the levers and stops, the operator is provided with clear and intuitive visual and tactile positioning feedback, which can quickly and accurately identify the enema and sewage positions, effectively avoid angle misjudgment during the switching process, and improve the success rate of the operation.

[0025] In this embodiment, two connecting blocks 26 are symmetrically fixedly connected to the top of the turntable 18, and a plug 27 is fixedly connected to one end of the bottom of the connecting block 26. Two slots 28 are symmetrically opened on the top of the main cover 1 along the center of the turntable 18. The plug 27 is inserted into the slot 28. When the turntable 18 is pulled upward, the plug 27 will move upward together, thereby separating the plug 27 from the slot 28. When the turntable 18 is pressed down, the plug 27 is inserted into the slot 28, thereby fixing the turntable 18. Through the insertion and cooperation of the plug and the slot, a clear mechanical lock is provided for the working position of the turntable, preventing it from shifting or loosening due to accidental force during irrigation or sewage discharge, ensuring the stability and reliable function of the device during the treatment stage.

[0026] In this embodiment, a shrinkage block 30 is fixedly connected to the top of the turntable 18 and the top of the two tube grooves 29. The outer surface of the two shrinkage blocks 30 is provided with a threaded groove 31. The outer surface of the two shrinkage blocks 30 is threadedly connected to a threaded sleeve 32 through the threaded groove 31. The threaded sleeve 32 is conical. After the enema tube and the sewage pipe are inserted into the two pipe grooves 29, the threaded sleeve 32 is rotated. Since the threaded sleeve 32 is conical, rotating the threaded sleeve 32 upwards will cause the top of the contraction block 30 to contract, thereby squeezing the outer surface of the enema tube and the sewage pipe, thus fixing them in place. Therefore, the enema tube and the sewage pipe can move together with the turntable 18. Through the synergistic effect of the conical threaded sleeve and the contraction block, the enema tube and the sewage pipe can be firmly clamped with a simple rotation operation, which not only prevents the pipeline from accidentally loosening during operation, but also ensures that the pipeline can move synchronously and accurately with the turntable, achieving overall coordinated operation.

[0027] In this embodiment, the vertical length of the insert 27 is lower than the vertical length of the slide 25. By using components such as the turntable 18, the slider 24 and the slide 25, the positions of the two pipe grooves 29 are changed, thereby changing the target of the leak-proof structure 4.

[0028] It should be noted that this invention is a medical adult colostomy enema device. In use, firstly, the main cover 1 is aligned with the stoma and fixed to the patient's stoma using two Velcro straps 2. When the main cover 1 is aligned with the stoma, its secondary cover 5 is also aligned with the stoma. The external enema tube and sewage tube are inserted into the two tube grooves 29 respectively, and the enema tube is aligned with the docking groove 12 and connected until it is inserted into the stoma. The sealing ring 13 increases the sealing degree between the enema tube and the docking groove 12. At this time, the enema fluid can be injected into the patient's colon through the cooperation of the external enema bag and the enema tube. After the connection is completed, the enema tube is separated from the docking groove 12, and the sewage tube is connected to the docking groove 12. The sewage can then be sent to the sewage bag through the sewage tube, thus completing the enema work. During the enema work, the secondary cover 5 seals the area around the stoma, and the main cover 1 seals the secondary cover 5, thereby achieving a double sealing effect. During the enema process, the screw 16 can be rotated to drive the two connecting rods 15 to descend, thereby driving the two straight rods 10 to press down synchronously. This, in turn, through the two top blocks 9, presses down on the two connecting rods 8, thus providing downward pressure to the auxiliary cover 5. As a result, the auxiliary cover 5 fits more closely around the stoma, increasing its sealing performance. By pulling the turntable 18 upward with the handle 19, the six slide grooves 25 slide upward relative to the six sliders 24 until the sliders 24 are at the bottom of the slide grooves 25. At this time, the enema tube is separated from the stoma and the auxiliary cover 5. Then, by rotating the turntable 18, the ring 23 is rotated along the inside of the groove 22 through the cooperation of the slide grooves 25 and the sliders 24. This drives the two tube grooves 29 to rotate synchronously until the turntable 18 rotates 180 degrees. At this time, the sewage pipe is facing the docking groove 12. Then, the turntable 18 is pressed down, which drives the sewage pipe to move downward and insert it into the stoma, thus achieving a rapid switching between the enema and sewage pipes in the closed system. When the enema tube is connected to the docking groove 12, the two levers 20 contact the opposite sides of the two stops 21. When the turntable 18 is rotated to switch between the enema tube and the drain tube, the two levers 20 will rotate together, and the two levers 20 will contact the opposite sides of the two stops 21. At this time, the drain tube is facing the top of the docking groove 12. When the turntable 18 is pulled upward, the insertion block 27 will move upward together, thereby separating the insertion block 27 from the slot 28. When the turntable 18 is pressed down, the insertion block 27 and the slot 28 are inserted into each other, thereby fixing the turntable 18. After the enema tube and the sewage tube are inserted into the two tube slots 29, the threaded sleeve 32 is rotated. Since the threaded sleeve 32 is conical, when the threaded sleeve 32 is rotated upward, the top of the contraction block 30 will contract, thereby squeezing the outer surface of the enema tube and the sewage tube, thus fixing them in place. Therefore, the enema tube and the sewage tube can move together with the turntable 18.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A medical adult colostomy enema device, comprising a main cover (1), wherein two Velcro straps (2) are symmetrically fixedly connected to the outer surface of the main cover (1), characterized in that: The main cover (1) is equipped with a leak-proof structure (4). The leak-proof structure (4) includes a secondary cover (5). The top of the secondary cover (5) is symmetrically fixed with two pairs of fixing blocks (6). The inner wall of the main cover (1) is symmetrically fixed with two pairs of fixing blocks (7). A connecting rod (8) is rotatably connected between an adjacent pair of fixing blocks (6) and a pair of fixing blocks (7). The top of each of the two connecting rods (8) is fixedly connected with a straight rod (10). The top of the secondary cover (5) is fixedly connected with a protrusion (11). The top of the protrusion (11) penetrates through the bottom and communicates with the interior of the secondary cover (5) and is provided with a docking groove (12). The inner wall of the docking groove (12) is fixedly connected with a sealing ring (13).

2. The medical adult colostomy enema device according to claim 1, characterized in that: The top of the two straight rods (10) and the top of the main cover (1) are both fixedly connected to a connecting rod (15), and the close ends of the two connecting rods (15) are fixedly connected to each other. The top of the main cover (1) is rotatably connected to a screw (16).

3. The medical adult colostomy enema device according to claim 1, characterized in that: The screw (16) is threaded to the near ends of the two straight rods (10). When the screw (16) is rotated, the two connecting rods (8) are pressed down by the two connecting rods (15), the two straight rods (10) and the two top blocks (9), so that the sub-cover (5) fits the skin near the stoma more closely.

4. The medical adult colostomy enema device according to claim 1, characterized in that: The bottom of the main cover (1) is fixedly connected to a rubber pad (3), and the bottom of the secondary cover (5) is fixedly connected to a rubber pad (14). The rubber pad (3) and the rubber pad (14) respectively improve the sealing degree of the main cover (1) and the secondary cover (5).

5. The medical adult colostomy enema device according to claim 1, characterized in that: The main cover (1) is provided with a switching structure (17) at the top. The switching structure (17) includes a turntable (18). A through groove is provided at the bottom of the main cover (1) through the top. The turntable (18) is located inside the through groove (22) of the main cover (1). The top of the turntable (18) is provided through the bottom and two tube grooves (29) are symmetrically opened along the center. A rotating ring (23) is rotatably connected inside the rotating groove (22). Six sliding grooves (25) are equidistantly opened on the outer surface of the turntable (18). A handle (19) is fixedly connected at the center of the top of the turntable (18).

6. The medical adult colostomy enema device according to claim 5, characterized in that: Each of the grooves (25) has a slider (24) slidably connected inside. The six sliders (24) are fixedly connected at equal intervals to the inner wall of the rotating ring (23). The sliders (24) are located at the top of the groove (25).

7. A medical adult colostomy enema device according to claim 5, characterized in that: Two toggle blocks (20) are symmetrically fixedly connected to the top of the turntable (18), and two stop blocks (21) are symmetrically fixedly connected to the top of the main cover (1) along the center of the turntable (18). The two stop blocks (21) are located on the opposite sides of the two toggle blocks (20).

8. The medical adult colostomy enema device according to claim 1, characterized in that: Two connecting blocks (26) are symmetrically fixedly connected to the top of the turntable (18), and a plug (27) is fixedly connected to one end of the bottom of the connecting block (26). Two slots (28) are symmetrically opened on the top of the main cover (1) along the center of the turntable (18), and the plug (27) is inserted into the slot (28).

9. A medical adult colostomy enema device according to claim 1, characterized in that: Shrink blocks (30) are fixedly connected to the top of the turntable (18) and the top of the two tube grooves (29). The outer surfaces of the two shrink blocks (30) are provided with threaded grooves (31). The outer surfaces of the two shrink blocks (30) are threadedly connected to threaded sleeves (32) through the threaded grooves (31). The threaded sleeves (32) are conical.

10. A medical adult colostomy enema device according to claim 6, characterized in that: The vertical length of the insert (27) is lower than the vertical length of the slide (25). By using components such as the turntable (18), slider (24) and slide (25), the positions of the two pipe grooves (29) are changed, thereby changing the target of the anti-leakage structure (4).

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